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photorespiration

18127 relationships annotated with this phrase. Showing first 500 of 18127.
Source entity Relationship Target entity Species
kinetics of intracellular sulfenylation and persulfidation showed opposing waves in phase-shifted manner transition from non- to photorespiration Arabidopsis thaliana
Gly:Ser ratio in sulfide-treated plants was significantly higher than untreated plants adapted to photorespiration Arabidopsis thaliana
BS cells in F. cronquistii lack pronounced GDCp stain Flaveria cronquistii
GDCp (P-subunit of GDC) immunolabel is associated with glycine decarboxylase (GDC) activity Flaveria species
all data shown support sulfide has a beneficial role for the plants, in relation to photorespiration Arabidopsis thaliana
interpretations of glycine and serine removal from the photorespiratory pathway are demanding on ci precision
chloroplast envelope resistance to CO2 transfer is affected by photorespiration Nicotiana tabacum
GDCp immunolabel in inner BS region corresponds to position of large majority of BS mitochondria Flaveria sonorensis; Flaveria angustifolia
NAD-ME species has higher photorespiratory loss
weak glycine shuttle in hot, low-CO2 environments could offset photorespiratory costs Flaveria species
increased organelle volume in inner bundle sheath (BS) may create large enough sink for glycine Flaveria; Heliotropium; Steinchisma
sulfide found lesser increase but significant in GOX and CAT activities Arabidopsis thaliana
BS cells in F. sonorensis and F. angustifolia have very pronounced band of GDCp immunolabel in inner BS region Flaveria sonorensis; Flaveria angustifolia
H2O2 concentration sharply decreased during first days of transition to photorespiration adaptation Arabidopsis thaliana
GDCp label is apparent throughout M tissue in F. pringlei and F. robusta Flaveria pringlei; Flaveria robusta
reduction in intercept of high-light A/Ci response with Rd line is caused by increasing flux of glycine into bundle sheath (BS) as ribulose 1,5-bisphosphate regeneration approaches maximum capacity Flaveria angustifolia; Flaveria sonorensis
heat and aridity combined with low atmospheric CO2 would have depressed intercellular CO2 content (Ci) and greatly increased photorespiratory potentials Flaveria species
plants acclimated to photorespiration showed decrease in fluorescence in stomata Arabidopsis thaliana
higher demand for (ATHPR1, HPR, AT1G68010) and CAT under conditions where the photorespiratory cycle is operative exists Arabidopsis thaliana
F. sonorensis and F. angustifolia exhibit punctate spots of GDCp label in M tissue Flaveria sonorensis; Flaveria angustifolia
photorespiration exhibits largest G × E variance component G × E variance component Arabidopsis thaliana
photorespiration has been in focus for improving plant carbon fixation
obtained losses (%) were on average about twice as high as modelled fpr,200–21
C2 species Flaveria floridana shows pronounced label in inner BS cells Flaveria floridana
GDCp label distribution is consistent with location of mitochondria in M tissues Flaveria cronquistii
overflow of glycine into bundle sheath (BS) causes bundle sheath (BS) CO2 concentration to increase Flaveria angustifolia; Flaveria sonorensis
plants growing under NPC transition to acclimation to photorespiration in normal air atmosphere (APC) Arabidopsis thaliana
PSOH levels increased to maximum at 6 d after acclimation to air acclimation period Arabidopsis thaliana
proteins involved in regulation of important biological processes participate in photorespiration
C3 plants lose photosynthate via oxygenation of RuBP through wasteful photorespiration
GDCp label is apparent as distinct, narrow band along centripetal walls of BS cells in F. pringlei and F. robusta Flaveria pringlei; Flaveria robusta
RT-PCR analysis measured GDC P-protein expression
photorespiration links carbon and nitrogen metabolism Arabidopsis thaliana
iWUE com model accounts for photorespiratory fractionation
increase in light intensity increases glycine production in C2 species Flaveria angustifolia; Flaveria sonorensis
photorespiration consumes reducing equivalents
relative difference (%) in measured A between two contrasting gas-mixture conditions can be considered as apparent measured photorespiratory loss (%) for condition of 200 μmol mol−1 CO2 and 21% O2
sulfide enhances the activity of several photorespiratory enzymes under active photorespiration Arabidopsis thaliana
GDCp label in M tissue is particularly reduced in lower and interior regions of M tissue Flaveria sonorensis; Flaveria angustifolia
photorespiratory mutants grow weakly under normal CO2 conditions
14 proteins found to be exclusively persulfidated in APC Arabidopsis thaliana
residual glycine decarboxylase (GDC) activity in mesophyll (M) cells could metabolize much of the glycine produced at low light Flaveria angustifolia; Flaveria sonorensis
reduction in relative flux of glycine into bundle sheath (BS) reduces bundle sheath (BS) CO2 concentration Flaveria angustifolia; Flaveria sonorensis
increasing CO2 to a final concentration of 0.7% (v/v) creates nonphotorespiratory conditions
CAT activity showed 10% increase sulfide treatment Arabidopsis thaliana
further evidence is also presented of positive role of sulfide regulating photorespiratory enzyme activities Arabidopsis thaliana
differences in variance components for reactions in photorespiration support claim of pathway branch points providing flux rerouting Arabidopsis thaliana
photorespiration in hot environments releases substantial amounts of CO2 in the BS
large vacuole would slow efflux of photorespired CO2 Flaveria pringlei; Flaveria robusta
Genes encoding chloroplastic phosphoglycolate phosphatase in Haberlea rhodopensis are repressed during darkness Haberlea rhodopensis
(AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370) mutant plants treated with antimycin A in light for 6 h shows increased glycine-to-serine ratio
redox regulation of photorespiratory enzymes has been previously described
photorespiratory H2O2 production can be controlled elevated CO2
growth of plants under high CO2 leads to inhibition of photorespiratory pathway
photorespiration produces hydrogen peroxide (H2O2)
experimental elevation of [CO2] suppresses Rubisco oxygenase reaction
13 CO 2 emissions (0.23–0.26 µmol m –2 s –1 ) remained stable for over approximately 1 h Inga edulis
photosynthetic carbon oxidation cycle is fundamental rate property of plants
glycine in Col0 increased substantially over the first 2 d, then subsequently declined Col0 transferred to air Arabidopsis thaliana
glycine in Col0 leaves six days after the transfer was three-fold higher than at elevated CO2 Arabidopsis thaliana
photorespiration is effectively switched off at elevated CO2
photorespiration has strong effects on cellular NADH/NAD+ balance
photorespiration results in ATP losses
low CO2 concentrations are well known to stimulate photorespiration
mitochondrial fatty acid synthesis inactivation can be well tolerated under nonphotorespiratory conditions
LPLA RNAi plants in high-CO2 conditions showed performance that was not improved in high-CO2 conditions Arabidopsis thaliana
release of photorespiratory 13CO2 emissions would require formation of Gly with 13C atom in first carbon position ([1-13C]Gly)
(AtHPR1, AtTHO1, HPR1, RAE3, THO1, AT5G09860) converts hydroxypyruvate to glycerate Arabidopsis thaliana
increase in expression of GDC could not fully compensate for lack of (AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370) to optimize photosynthesis Arabidopsis thaliana
serine (Ser)-to-glycine (Gly) ratio in scions of C4/C3 grafted plants reaches the highest value in C4/C3 grafts Flaveria bidentis
[2-14C]Gly is a photorespiratory intermediate
13CO2 emissions were also observed
de novo lipoylation in photorespiring leaf mitochondria supports high GDC (glycine cleavage complex) activity Arabidopsis thaliana
At- (ASL39, LBD37, AT5G67420) overexpression results in higher levels of 3-cyano-alanine Arabidopsis thaliana
high light could induce remarkably increased glycine contents in (AtGLDP1, GLDP1, AT4G33010) mutant Arabidopsis thaliana
photorespiration is target for improvement
Cornic and Jarvis (1972) concluded that lack of Kok effect could be explained by lack of photorespiration under natural conditions
serine (Ser)-to-glycine (Gly) ratio is often used as marker for photosynthesis type Flaveria species
photorespiration can be major producer of H2O2 in leaf peroxisomes
effects of photorespiration on glycine, glutamate, and serine in potato and wheat leaves are consistent with observations in Col0 Arabidopsis thaliana; Solanum tuberosum; Triticum aestivum
(AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370) mutants show altered photosynthetic performance in response to aminoacetonitrile (AAN) inhibition of glycine decarboxylase
increased bundle sheath cell (BSC) - mesophyll cell (MC) interface cell wall thickness (Lpd) at surface fraction of plasmodesmata (Φ) equal to 0.03 lowered rate of photorespiration
C4 roots are important for manifestation of C4 characteristic serine (Ser)-to-glycine (Gly) ratio Flaveria bidentis
serine (Ser)-to-glycine (Gly) ratios may not be controlled only by photorespiration Flaveria species
[2- 13 C]Gly delivered to leaves via transpiration stream does not accumulate but is rapidly metabolized Inga edulis
AtLIP2 gene is coregulated with photorespiratory genes Arabidopsis thaliana
[2-13C]glycine stimulated emissions of 13CO2
Rubisco catalyzes oxygenation of ribulose-1,5-bisphosphate (RuBP)
fractionation associated with photorespiration has value of f = 11.6‰
serine is produced in photorespiration at much higher rates than rates required for glutathione synthesis
alternative oxidase (AOX), particularly (AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370) isoform coordinates with chloroplast photorespiratory pathway (CP) to optimize photosynthetic performance
H-protein in plants could go beyond function during glycine decarboxylation Arabidopsis thaliana
Photorespiratory pathway genes in Haberlea rhodopensis are heavily repressed during darkness Haberlea rhodopensis
repression of Rubisco results in less production of phosphoglycolate Haberlea rhodopensis
decreased levels of serine confirms repression of photorespiratory pathways in darkness Haberlea rhodopensis
glycerate is shuttled from peroxisomes to chloroplasts Arabidopsis thaliana
endogenous H2O2 is localized in peroxisomes
lack of GDC protein cannot explain limitation at GDC-catalyzed step in (AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370)
photorespiration becoming active at expense of photosynthesis occurs under high temperatures
Perturbation of photorespiratory metabolism is relatively small as indicated by changes in Gly, Ser, and glycerate Arabidopsis thaliana
glycine decarboxylase (GDC) catalyzes photorespiratory Gly-to-Ser conversion
wild-type plants treated with antimycin A in light for 6 h shows glycine-to-serine ratio of 0.6
photorespiratory activity in peroxisomes of germinating seeds is little
photorespiration could serve as alternative dissipating system
leaf temperature maintained at 30°C resulted in 13 CO 2 emissions remained stable Inga edulis
[2,3 13C]Ser could form when supplied [2-13C]Gly is methylated by 13CH2-tetrahydrofolate generated from another [2-13C]Gly
ammonium is subsequently incorporated into glutamate Arabidopsis thaliana
photorespiratory process recovers one molecule of 3PGA from two molecules of 2PG
(AtGLDP1, GLDP1, AT4G33010) null plants accumulate more glycine under intensified photorespiration Arabidopsis thaliana
reaction of Rubisco with oxygen is considered wasteful
serine (Ser)-to-glycine (Gly) ratio in scions of C3/C4 grafted plants increased to values of C4 scions Flaveria robusta; Flaveria bidentis
photorespiration is implicated in plasticity of growth Arabidopsis thaliana
light dependency of ½ could be explained by residual glycine decarboxylase (GDC) activity in mesophyll (M) cells Flaveria angustifolia; Flaveria sonorensis
mitochondrial isocitrate dehydrogenase antisense lines showed increased label redistribution to glycine and serine Solanum lycopersicum
photorespiration protection against photoinhibition occurs under conditions of stress conditions that lead to stomatal closure
oxygenation reaction leads to wasteful photorespiration
glycolate oxidase (GOX) produces glyoxylate
glutamate:glyoxylate aminotransferase (GGAT) catalyzes transamination of glyoxylate
serine amino group transfer to glyoxylate produces glycine
plant attempts to counter effects by elevating (AOX1D, AT1G32350) expression level
leaves exposed to photorespiratory conditions (50 ppmv 12 CO 2 ; negative net photosynthesis) and [2- 13 C]Gly resulted in emissions of labeled 13 CO 2 were observed within minutes Inga edulis
rapid emission of 13CO2 and isoprene with multiple 13C atoms (one to five) demonstrates that supplied [2-13C]Gly can undergo several photorespiratory cycles
(AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370) (ALTERNATIVE OXIDASE 1A) optimizes carbon flux through photorespiration
glycine cleavage system (GCS) catalyses pyridoxal 5-phosphate-dependent enzyme P-protein (glycine decarboxylase) reaction
5-formyl-THF auto-inhibition of SHMT necessitates continual detoxification
(ATPUMP1, ATUCP1, PUMP1, UCP, UCP1, AT3G54110) mutant shows dramatic decrease in mitochondrial conversion of glycine to serine Arabidopsis thaliana
operation of photorespiration requires multiple, as yet uncharacterized, organellar metabolite transporters
photorespiration is discussed to mitigate high light stress Arabidopsis thaliana
photorespiration is discussed to mitigate drought stress Arabidopsis thaliana
restriction of GDC activity to bundle sheath cells led to establishment of photorespiratory CO2 pump
higher levels of glycine and serine indicates enhanced photorespiration activity Arabidopsis thaliana
IDH4 transgenic line shows significantly reduced level of glycerate Solanum lycopersicum
photorespiration protection against photoinhibition occurs under conditions of reduction in intercellular CO2 concentrations
concomitant release of post-photorespiratory NH4+ is increased in SHMT transgenic plants Solanum tuberosum
photorespiratory pathway mutants are affected in mitochondrial enzymes Arabidopsis thaliana
photorespiration produces more glycine that needs to be degraded to prevent cell intoxication Arabidopsis thaliana
glycine and serine accumulation may indicate enhanced photorespiration activity in the leaves of FOX lines Arabidopsis thaliana
conversion of glycine to serine occurs during ambient atmospheric conditions
catalytic cycle of Rubisco in C3 plants about every fourth cycle leads to formation of 2-phosphoglycolate
reduction of gross-photosynthesis to about 50% and less lowers potential yields
photorespiration requires ATP
photorespiration requires extra energy for refixation of liberated ammonia
photorespiration is associated with respiratory C flow
photorespiration is likely to protect against photoinhibition
photorespiration is discussed to mitigate salt stress Arabidopsis thaliana
photorespiratory pathway mutants show smaller growth Arabidopsis thaliana
(ATPDX1, ATPDX1.3, PDX1, PDX1.3, RSR4, AT5G01410) proteins have significant impact on photorespiratory and photosynthetic processes Arabidopsis thaliana
chloroplasts are sites of photorespiration
CO2 loss from photorespiration represents the largest fraction of respiratory processes that reduce gross-photosynthesis
glycine cleavage system (GCS) is association of four polypeptides in a fragile multiprotein glycine decarboxylase complex (GDC)
cytosolic bypass of hydroxypyruvate reduction exists photorespiration
d-GLYCERATE 3-KINASE (GLYK, AT1G80380) returns three out of four 2PG C atoms back to the Calvin-Benson cycle
photorespiration involves metabolite shuttles
photorespiration results in CO2 losses
glutamate is regenerated when serine is converted to hydroxypyruvate
2-phosphoglycolate (2PG) is auto-inhibitory metabolite
glycine cleavage system (GCS) catalyses NAD+-dependent enzyme L-protein (dihydrolipoamide dehydrogenase) reaction
photorespiration has regulatory interactions with Calvin-Benson cycle
glycine cleavage system H protein was upregulated in mitochondria of NOLi lines Lolium perenne
serine hydroxymethyltransferase together with glycine decarboxylase complex (GDC) converts two molecules of glycine to CO2
oxygenase reaction of Rubisco produces 2-phosphoglycolate
vitB6 deficiency is linearly correlated with increasing glycine levels Arabidopsis thaliana
increases in kcat lead to increases in photorespiration
metabolite transporters are needed to support photorespiration
glycine cleavage system (GCS) produces methylenetetrahydrofolate
serine amino group transfer to glyoxylate produces hydroxypyruvate
high light caused reduced glycine contents in (AtGLDP2, GLDP2, AT2G26080) mutant Arabidopsis thaliana
At- (ASL39, LBD37, AT5G67420) overexpression results in higher levels of glycine Arabidopsis thaliana
reprogramming to maintain glutamate pool size is part of up-regulation in photorespiration flux Solanum lycopersicum
photorespiration is subject to contemporary and envisioned strategies to engineer the biochemistry of, or even avoid
2-Phosphoglycolate (2PG) phosphatase (PGLP) catalyzes hydrolysis of 2-phosphoglycolate to glycolate
H-protein (hydrogen carrier protein) successively interacts with P-protein, T-protein and L-protein
photorespiration is suggested to have roles in non-heterotrophic tissues
leaf peroxisomes are physically and functionally associated with mitochondria
flux through photorespiration is very high
photorespiration is known to reduce efficiency of photosynthesis
photorespiration comprises enzymatic reactions distributed in chloroplasts, peroxisomes, and mitochondria
energy costs of photorespiration is thought to have additional negative impact on crop yields
transporters involved in photorespiratory ammonium assimilation have functions resolved photorespiratory ammonium assimilation
plastidic glutamate/malate transporter DiT2 was identified in forward genetics screen
mitochondrial uncoupling protein has functions resolved photorespiration
specific transporters of plant mitochondria are involved in the exchange of glycine and serine
elevated carbon dioxide (CO2) concentration is expected to cause decrease in photorespiration
serine hydroxymethyltransferase (SHMT) mutant (SHM1, SHMT1, STM, AT4G37930) is photorespiratory pathway mutant Arabidopsis thaliana
recycling of 2-phosphoglycolate to 3-phosphoglycerate (3PGA) requires at least 16 enzymes
two molecules of glyoxylate need to be transaminated to form two molecules of glycine
10-formyl THF deformylase double knockout of 10-FDF ( (AT4G17360) and (AT5G47435) ) is photorespiratory pathway mutant Arabidopsis thaliana
glycolate is photorespiration intermediate
5-formyl-THF detoxification adds second-level metabolic repair system on top of that catalysed by photorespiration
Arabidopsis DiT2 knockout mutant (DCT, DIT2.1, AT5G64290) displays photorespiratory phenotype Arabidopsis thaliana
glycine is metabolic intermediate in photorespiration
photorespiration is highest flux-bearing metabolite repair cycle on Earth
glutamate:glyoxylate aminotransferase (GGAT) generates 2-oxoglutarate
drought conditions favour oxygenation reaction of Rubisco
ammonia is released by mitochondrial glycine decarboxylase (GDC) Arabidopsis
glycolate oxidase (GOX) produces hydrogen peroxide (H2O2)
glycine cleavage system (GCS) liberates ammonia
photorespiration has interactions with one-carbon metabolism
photorespiration prevents accumulation of toxic levels of glycolate
feedback inhibition of glycine decarboxylase complex (GDC) leads to increased Gly/Ser ratio
photorespiration proteins showed weaker expression in bundle sheath cells Oryza sativa
high temperatures favour oxygenation reaction of Rubisco
photorespiratory pathway in eukaryotes is much more complex than the Calvin-Benson cycle
glycolate moves to peroxisome
tobacco (DiT1, AT5G12860) antisense plants display photorespiratory phenotype Nicotiana tabacum
2-phosphoglycolate would be toxic if accumulated to high levels
photorespiratory pathway mutants show reduced chlorophyll content Arabidopsis thaliana
photorespiration has developed considerable number of roles not directly related to detoxification of 2PG
(AGT, AGT1, SGAT, AT2G13360) was upregulated in mitochondria of NOLi lines Lolium perenne
peroxisome photorespiration produces H2O2
localization of glycine decarboxylase to vascular sheath cells is termed C2 photosynthesis
GS isozymes have been reported to be involved in photorespiration
glyoxylate can also undergo reduction to glycolate
(HUP43, PCO2, AT5G39890) around Rubisco several fold higher than current atmospheric levels significantly reduces rates of photorespiration
photorespiratory enzyme-deficient mutants were subsequently isolated from barley Hordeum vulgare
disruption of the photorespiratory pathway results in accumulation of photorespiratory metabolites Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
(ATGSL1, GLN2, GS2, AT5G35630) major role is related to C2-NH4+ re-assimilation pathway
photorespiration-associated enzymes are strongly up-regulated in K16331 line
glycerate is photorespiration intermediate
catalase (CAT) decomposes hydrogen peroxide (H2O2)
hydroxypyruvate reductase 2 (HPR2) reduces hydroxypyruvate
glyoxylate is typically transaminated to Gly
H subunit of glycine decarboxylase (GDC-H) shows little alteration in transcript levels in antisense plants Oryza sativa
glycolate oxidase (GLO) is key player in photorespiration
glycolate oxidase (GLO) could have second essential role beyond the photorespiratory pathway
photorespiratory pathway is major source of glyoxylate
serine hydroxymethyltransferase 1 (SHM1, SHMT1, STM, AT4G37930) was upregulated upon (NOL, AT5G04900) knockdown Lolium perenne
(SHM1, SHMT1, STM, AT4G37930) was upregulated in mitochondria of NOLi lines Lolium perenne
Antioxidant enzymes, including APX, GPX, GR, and MDAR result from photorespiration
serine hydroxymethyltransferase together with glycine decarboxylase complex (GDC) converts two molecules of glycine to NH3
formyltetrahydrofolate deformylase was upregulated in mitochondria of NOLi lines Lolium perenne
photorespiration acts throughout different stages of leaf age Arabidopsis thaliana
photorespiration recycles 2-phosphoglycolate (2PG)
photorespiration influences nitrate assimilation
seedlings treated with 100 μM NaHS significantly decreased glycolate oxidase (GYX) gene expression Spinacia oleracea
glycine decarboxylase complex (GDC) plays central role in photorespiration
glycine dehydrogenase (GDC-P) increase suggests up-regulation of photorespiration Oryza meridionalis
FOX lines show higher levels of serine Arabidopsis thaliana
(FD-GOGAT, GLS1, GLU1, GLUS, AT5G04140) plays a major role in photorespiration Arabidopsis thaliana
glycine metabolism is closely connected with photorespiration Arabidopsis thaliana
serine is photorespiration intermediate
hydroxypyruvate is reduced to glycerate
induction of photorespiration-related genes had been observed by Schafleitner et al. (2007) in a similar study
photorespiratory pathway is energetically expensive and greatly reduces net CO2 fixation
alanine-glyoxylate transaminase (AGT, AGT1, SGAT, AT2G13360) was upregulated upon (NOL, AT5G04900) knockdown Lolium perenne
photorespiration is down-regulated in C4 lineages/tissue
glycolate oxidase abundance level was maintained or increased in at least one ipt transgenic line under heat stress Agrostis stolonifera
genes involved in photorespiration were induced at 28 d after drought in both Sullu and SS2613
2-phosphoglycolate enters photorespiratory pathway
light intensity is key factor regulating photorespiration
photorespiratory glycine serves as a vehicle to move CO2 from mesophyll to the GDC-containing bundle sheath
Gly/Ser ratio is a parameter widely used for assessing photorespiration rate
oxidoreductase was downregulated upon (NOL, AT5G04900) knockdown Lolium perenne
warm, low CO2 conditions exacerbate limitations of photorespiratory limitations
glycolate oxidase is located in peroxisomes
water column temperature rise of 20 °C in <6 h combined with high pO2 and low CO2 would potentially increase photorespiration Isoetes australis
photorespiration proteins showed strong expression in mesophyll cells Oryza sativa
glycolate to glycine reactions of photorespiration could theoretically occur in mitochondria Arabidopsis thaliana
rate of photorespiration at 210 μmol mol −1 CO 2 is estimated at 8 μmol m −2 s −1 Arabidopsis thaliana
glyoxylate cycle may be partially activated to compensate for photorespiratory glyoxylate when GLO is suppressed Oryza sativa
hydropyruvate reductase (ATHPR1, HPR, AT1G68010) shows little alteration in transcript levels in antisense plants Oryza sativa
mutants with defects in GDC or further along the photorespiratory pathway showed deactivation of Rubisco Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
downstream metabolites such as glyoxylate, glycine, and serine were not reduced in GLO-suppressed plants Oryza sativa
glyoxylate cycle may be involved in compensation of glyoxylate as GLO activities were suppressed Oryza sativa
photorespiration is light-dependent and increases as light intensity increases
glycine metabolism is essential part of photorespiration
GLO-suppressed plants showed few changes in downstream metabolites and genes Oryza sativa
glycolate oxidase (GLO) catalyzes oxidation of glycolate
Somerville and Ogren approach led to creation of Arabidopsis mutants deficient in photorespiratory enzymes Arabidopsis thaliana
leaf peroxisomes are physically and functionally associated with chloroplasts
photorespiration wastes energy
(GABA-T, HER1, POP2, AT3G22200) with dual functions suggests potential for interaction between GABA metabolism and photorespiratory glyoxylate production Arabidopsis thaliana
mutated gene is indispensable for photorespiration Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
accumulated photorespiratory metabolites would confer negative feedback inhibition on the Calvin cycle Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
serine with high accumulation at D1 and R1 and glycerate with high abundance at D2 and R1 indicating changes in photorespiration during dehydration and rehydration Craterostigma plantagineum
oxygen production in bundle sheath chloroplasts of Megathyrsus maximus leads to higher photorespiration compared with other C4 plants Megathyrsus maximus
glycine decarboxylase L-protein ( (mtLPD1, AT1G48030) ) did not show upregulation under low CO2 Arabidopsis thaliana
the method proposed by Ripley et al. (2007) ignores the effect on Y(II)
(AtPHR1, PHR1, AT4G28610) (PHOSPHATE STARVATION RESPONSE 1) is directly or indirectly involved in control of light reactions of photosynthesis and photorespiration Arabidopsis thaliana
peroxisomes act in concert in photorespiration Arabidopsis thaliana
glycolate oxidase performs essential role in oxidative photorespiration cycle
energetic costs of C4 photosynthesis result in lower quantum yield than C3 pathway when photorespiration is decreased by low temperatures
decreasing CCR expression in tobacco affected photorespiration Nicotiana tabacum
glycolate dehydrogenase could have contributed to glyoxylate compensation in rice Oryza sativa; Arabidopsis thaliana
glycolate dehydrogenase hypothesis was clearly not supported by fact that glycolate still accumulated in the antisense plants Oryza sativa
glyoxylate compensation when (MLS, AT5G03860) was induced is currently hard to understand why glyoxylate should be compensated when (MLS, AT5G03860) was induced as it also utilizes glyoxylate as a substrate Oryza sativa
exogenous methanol (MeOH) inhibits part of glycolate pathway in mitochondria
higher temperatures stimulate photorespiration
GLO-deficient transgenic plants has clearly filled important gap for analysis of series of defective mutants along the whole photorespiratory pathway Oryza sativa
photorespiratory mutants including (AGT, AGT1, SGAT, AT2G13360) GDC, (ATHPR1, HPR, AT1G68010) and glutamine synthetase showed similar results to PGLP mutants Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
transgenic rice plants carrying estradiol-inducible GLO antisense gene allowing GLO expression to be effectively controlled Oryza sativa
GLO suppression implies existence of alternative pathway for glyoxylate production Oryza sativa
photorespiration term varies from 1.8‰ at 250 μbar (HUP43, PCO2, AT5G39890) to 0.7‰ at 600 μbar
photorespiration term was dealt with by assuming a value for f of 11.6‰ Triticum aestivum
circadian clock may control photorespiration-related genes Arabidopsis thaliana
oxygenation of sugar phosphate substrate by atmospheric O2 compromises carboxylase activity of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO)
photorespiratory enzymes are localized in chloroplasts
oxalate accumulation and regulation do not necessarily depend on photorespiration Oryza sativa
GDC in C3-C4 intermediates is localized only in mitochondria of BS cells Portulaca cryptopetala
CO2 fixation by Rubisco in the presence of 21% O2 leads to futile recycling of CO2 in photorespiration
photorespiratory mutants show photorespiratory phenotypes Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
glyoxylate could be compensated through certain anaplerotic reactions as GLO was suppressed Oryza sativa
Rubisco oxygenase activity initiates photorespiration
glyoxylate cycle blocked at (MLS, AT5G03860) glyoxylate feeds into photorespiratory pathway Arabidopsis thaliana
glyoxylate cycle may be partially activated to compensate for photorespiratory glyoxylate when GLO is suppressed in rice Oryza sativa
increased activity of photorespiratory pathway leads to elevated levels of Gly and Ser Arabidopsis thaliana
Y(II) (quantum yield of photosystem II) decreases under low O2 because demand for NADPH associated with photorespiratory by-product cycling is lower
Ser content may have other sources when Glycolate oxidase (GO) activity is partially inhibited by MeOH treatment
increased photorespiration promotes photosynthesis under drought stress by providing ribulose-1,5-bisphosphate (RuBP)
PGLP is one of photorespiratory mutants showing photorespiratory phenotypes Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
(RCA, AT2G39730) came out of photorespiratory screen related to Rubisco activation under high CO2 in the absence of (RCA, AT2G39730) Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
conversion of phosphoglycolate to less harmful compounds takes place via linked metabolic processes divided between chloroplasts, peroxisomes, and mitochondria
subtoxic chemical stresses linked with generic impact on photorespiration Lolium perenne
correlations between Ser and Gly, Glu, Asn, and Ala may confirm involvement of the photorespiratory pathway in chemical stress responses Lolium perenne
exogenous methanol (MeOH) activates glycerate pathway
Ser was strongly positively correlated to Gly and Glu Lolium perenne
major common response to all of the chemical stressors was depletion of two photorespiration-related compounds, Ala and glycerate Lolium perenne
photorespiratory enzyme mutants have been identified and characterized in Arabidopsis; barley; tobacco Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
carbon isotope discrimination method has difficulties arising from contributions from respiration and photorespiration
photorespiration has fractionation factor value of f = 11.6‰
phosphoglycolate is toxic if allowed to accumulate
photorespiration genes showed trends of upregulation under low CO2 compared with normal CO2 Arabidopsis thaliana
photorespiration results in carbon loss
photorespiratory glycine shuttle concentrates CO2 into bundle sheath cells Atriplex prostrata; Atriplex rosea
photorespiration is essential auxiliary metabolic pathway
methanol (MeOH) treatment produces various changes in production of photorespiratory intermediates
serine hydroxymethyltransferases 2 and 3 (SHMT2 and SHMT3) was even more enhanced at 4h of N deprivation Chlamydomonas
photorespiration has stabilizing function for photosynthetic activity Clusia minor L.
mitochondrial version of photorespiratory pathway would bypass H 2 O 2 production associated with glycolate oxidase reaction Arabidopsis thaliana
Leaf peroxisomes and chloroplasts and mitochondria are associated through glycolate recycling pathway
IPT plants had increased level of transcripts coding for enzymes in photorespiration pathway tobacco
(AGT, AGT1, SGAT, AT2G13360) is one of photorespiratory mutants showing photorespiratory phenotypes Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
GLO downstream enzymes were little affected in GLO-suppressed tobacco plants Nicotiana tabacum
contribution of At (GABA-T, HER1, POP2, AT3G22200) to photorespiration is likely to occur under stress when CO 2 availability is restricted Arabidopsis thaliana
stomatal closure reduces CO2/O2 ratio in the intercellular spaces
photorespiratory pathway genes encoding components have been cloned photorespiratory pathway components
Glycolate oxidase (GLO) regulation of photosynthesis possibly through feed-back inhibition on Rubisco activase (RCA, AT2G39730) Oryza sativa
glyoxylate from the glyoxylate cycle can step into photorespiratory pathway when (MLS, AT5G03860) was mutated Arabidopsis thaliana
photorespiratory enzymes were selected to analyze possible changes under active photorespiration Arabidopsis thaliana
top 10 pathways with respect to average G × E component included photorespiration Arabidopsis thaliana
Rubisco plays essential role as oxygenase during photorespiration
GS and (ATHPR1, HPR, AT1G68010) enzyme activities reached double respecting to untreated plants Arabidopsis thaliana
similar signaling waves are observed during transition from suppressed photorespiration to active photorespiration Arabidopsis thaliana
GDC levels in M cells of F2 hybrids may be low owing to inheritance of C4 expression patterns for at least one of four GDC subunits Atriplex rosea; Atriplex prostrata
Gly is converted to Ser and CO2
cotton leaves treated with methanol (MeOH) decrease rate of photorespiration
GLO deficiency does not reduce serine levels Oryza sativa
estradiol-induced GLO suppression can phenocopy photorespiration-deficiency mutants Oryza sativa
photorespiration can alter cellular redox balance Arabidopsis thaliana
photorespiratory loss (fpr) for gas mixture of 200 μmol mol−1 CO2 and 21% O2 was c. 5.2% in NADP-ME, c. 7.2% in NAD-ME, and c. 7.3% in PEP-CK subtype
differences in calculated Cc and Oc levels result in model-calculated average photorespiratory loss (fpr, %) of 0.27%, 0.46%, and 0.60% for NADP-ME, NAD-ME, and PEP-CK subtypes
higher leakiness and O2 evolution in bundle-sheath cells is associated with more photorespiration
iWUE (SIM, AT5G04470) model has drawback originating from inexplicit expression of fractionation processes associated with photorespiration
bou-2 mutant shows hallmark features of a typical photorespiratory mutant Arabidopsis thaliana
γ-aminobutyrate (GABA) accumulates significantly in bou-2 mutant Arabidopsis thaliana
mitochondria isolated from bou-2 plants shows strongly reduced apparent rate of the GDC reaction Arabidopsis thaliana
malfunctioning photorespiratory metabolism leads to global gene expression modification Arabidopsis thaliana
model-fitting to assimilatory responses is complicated and time-consuming photorespiratory activity determination
glyoxylate accumulation occurs when glycolate oxidase (GO) activity inhibition Oryza sativa
exogenous methanol (MeOH) activates glycerate pathway in chloroplast
photorespiration modifications especially affecting glycerate Lolium perenne
(DCT, DIT2.1, AT5G64290) protein is required for photorespiration
bou-2 mutant does not exhibit inhibited growth in CO2-enriched air Arabidopsis thaliana
higher plants express glycolate oxidase
GDCp label in M tissue is noticeably less than in C3 Flaveria species Flaveria sonorensis; Flaveria angustifolia
GDCp label in mesophyll (M) cells of Flaveria angustifolia and Flaveria sonorensis indicates glycine decarboxylase (GDC) is still active in mesophyll (M) tissue Flaveria angustifolia; Flaveria sonorensis
photosynthetic activity by inner bundle sheath (BS) chloroplasts would probably depend upon photorespired CO2 released by nearby mitochondria Flaveria robusta
C2 cycle confined to bundle sheath (BS) may amount to single-celled glycine shuttle Flaveria pringlei; Flaveria robusta
photorespiratory cycle leads to hydrogen peroxide (H2O2) production in peroxisomes
GDC in both Cleome species shows selective labelling in BS mitochondria in Stage 1 Cleome angustifolia; Cleome gynandra
photorespiratory mutants in barley are specifically deficient in PLASTIDIC GLUTAMINE SYNTHETASE (ATGSL1, GLN2, GS2, AT5G35630) Hordeum vulgare
(bHLH, AT5G51780) family members ( (bHLH003, bHLH03, bHLH3, JAM3, AT4G16430) and bHLH9) were positively correlated with phosphoglycolate phosphatase (PGP3) and cytosolic hydroxypyruvate reductase (HPR2) Chlamydomonas
several distinct TFs appear to be involved in regulation of photorespiration Chlamydomonas
Tholen et al. (2012) demonstrated that gm would still be expected to decrease apparently sharply when photorespiratory CO2 flux rises at low Ci even if all relevant parameters in variable J method equation were exact
photorespiratory rate is function of CO2 and O2 concentration around Rubisco
measured data could not capture theoretical increase in VO/VC expected when Ci was close to zero Nicotiana tabacum
GS photorespiratory mutants from Lotus japonicus are specifically deficient in chloroplastic glutamine synthetase (ATGSL1, GLN2, GS2, AT5G35630) Lotus japonicus
photorespiration modifications especially affecting alanine Lolium perenne
few to no stomata on the stem epidermis in C4 Portulaca species suggests any CO2 assimilated by the chloroplasts would be derived from refixation of respired CO2 rather than by intake of atmospheric CO2 Portulaca umbraticola; Portulaca oleracea; Portulaca molokiniensis; Portulaca amilis; Portulaca grandiflora
Γ* (CO2 compensation point) is CO2 compensation point
level of GDC in both Cleome species shows a steady increase from the youngest up to mature leaves, with higher expression in Cleome gynandra than in Cleome angustifolia Cleome angustifolia; Cleome gynandra
photorespiration metabolism and nitrogen status are closely connected and co-regulated
photorespiration has particular energy demand energy demand Clusia minor L.
enzyme reactions occur within photorespiratory pathway
photorespiration leads to loss of fixed carbon
photorespiratory enzymes are localized in peroxisomes
homozygous photorespiratory mutants are not applicable for analysing regulation of photorespiration and/or photosynthesis Arabidopsis thaliana; Hordeum vulgare; Nicotiana tabacum
glycerate 3-kinase was particularly affected in (EX2, EXE2, AT1G27510) mutant plants Arabidopsis thaliana
low CO2 would increase photorespiration
reaction of O2 with RuBP oxygenase results in increase in CO2 compensation point in response to higher O2
serine (Ser) contents increase reduction in photorespiration rate
ammonium is produced by conversion of glycine to serine
GDC localization in BS cells is important test to distinguish between C3 and C3-C4 intermediate forms of photosynthesis
assumption and rate RP of CO2 losses from the leaf allows assessing partitioning D between re-fixation and loss of CO2 from the leaf Flaveria cronquistii; Flaveria pubescens; Flaveria trinervia
transcript abundances for most genes related to photorespiration in Flaveria ramosissima were even higher than in C3 species Flaveria robusta Flaveria ramosissima; Flaveria robusta
low O2 conditions causes assimilation increase
F2 hybrid has good chance that one or more GDC subunits exhibit C4 pattern and are not expressed in M cells Atriplex rosea; Atriplex prostrata
Gly content decrease is due to synthesis of Ser
sole supply of ammonia nitrogen triggers heightened photorespiration in the tea plant
reducing oxygenase activity reduces costs associated with photorespiration
photorespiratory CO2 pump in Flaveria pubescens elevates intraplastidial CO2 concentration approximately 3-fold relative to intraplastidial CO2 concentration in Flaveria cronquistii Flaveria pubescens; Flaveria cronquistii
Rubisco oxygenase activity at low CO2 would increase γ Atriplex rosea; Atriplex prostrata
glyoxylate content is influenced by fluctuations of light and temperature
changes in contents of photorespiratory intermediates alter photorespiration pathway
10 sub-networks contained 12 genes involved in photorespiration Chlamydomonas
photorespiration is prime example of pathway compartmentalization in eukaryotic cells
bou-2 and (SHM1, SHMT1, STM, AT4G37930) seedlings grown in vitro for 5–8 days accumulate high glycine levels Arabidopsis thaliana
serine-to-glycine ratio (Ser/Gly) decreased in all mutants under growth conditions Arabidopsis thaliana
(BOU, AT5G46800) is among the top 5% of transcripts co-regulated with photorespiratory genes Arabidopsis thaliana
2% O2 condition reduces fractionation associated with photorespiration
Rubisco oxygenation of ribulose-1,5-bisphosphate (RuBP) produces 2-phosphoglycolate (2-PG)
real-time carbon isotope discrimination is complicated and time-consuming photorespiratory activity determination
photorespiratory activity variations are resolved between C3 and C4 plants
Ser gives rise to glycerate
glycolate oxidase (GO) activity inhibition occurs even under conditions of significant glycine (Gly) deficit
vascular plants may have glycerate pathway
conversion of glycine to serine is part of photorespiratory nitrogen cycle
glyoxylate undergoes transamination to generate Gly
Ser may play an important role in photorespiration pathway
methanol (MeOH), glycine (Gly), and serine (Ser) may have been involved in evolution of photorespiration
glycolate/glyoxylate is produced during photorespiration
leaf mesophyll mitochondria contain glycine decarboxylase (GDC)
oxygenation of Rubisco is fundamental rate property of plants
immunodetection using antiserum against P-protein of GDC quantified P-protein of GDC
experiment repeated on leaves under higher, but still photorespiratory, 12 CO 2 concentrations (150 ppmv 12 CO 2 ) resulted in 13 CO 2 emissions increased with increasing temperature up to 37.5°C Inga edulis
Genes encoding chloroplastic glycerate kinase in Haberlea rhodopensis are repressed during darkness Haberlea rhodopensis
metabolite analysis revealed glycine and serine levels showed opposite trends
calibration curves with authentic standards enabled absolute quantification of glycine and serine amino acids
Western blot analysis revealed equal amounts of P-protein in wild-type and mutant
bou-2 mutant grown at 3000 ppm CO2 shows almost full compensation of chlorotic leaves and impaired growth phenotypes Arabidopsis thaliana
GDC in Cleome gynandra shows a steady increase of in parallel with an increase in BS Rubisco levels and cell structural maturation Cleome gynandra
methanol (MeOH) treatment increases serine Gossypium hirsutum
model predicted photorespiratory rate
serine is key intermediate of photorespiratory pathway
PEP-CK species has higher photorespiratory loss
implicit opportunity cost is that enzyme turnover resulting in Rubisco oxygenase reaction might have been unit of flux in Rubisco carboxylase reaction
(AtHPR1, AtTHO1, HPR1, RAE3, THO1, AT5G09860) mutant exhibits less chlorophyll Arabidopsis
(AtHPR1, AtTHO1, HPR1, RAE3, THO1, AT5G09860) mutant exhibits decreased photochemical efficiency of PSII (Fv/Fm) Arabidopsis
glycine decarboxylase complex functions in photorespiration Chlamydomonas reinhardtii
(GLYK, AT1G80380) encodes glycerate kinase (GLYK, AT1G80380) Arabidopsis thaliana
Hydroxypyruvate (Hpyr) can diffuse out of peroxisome to cytoplasm Arabidopsis thaliana
elementary flux modes contain Rubisco oxygenase reaction
photorespiration is positively coupled to nitrogen assimilation
cat2-1 mutant has less than 20% wild-type leaf catalase activity Arabidopsis thaliana
(AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370) mutants show decreased serine level
increased ATP level and ATP/ADP ratio is indicative of increased flux through chloroplast photorespiratory pathway (CP)
exogenous methanol (MeOH) modulates glycolate oxidase (GO) activity Gossypium hirsutum
Cotton (Gossypium hirsutum L.) has significantly higher photorespiration rates Gossypium hirsutum
bou-2 mutant shows considerably elevated CO2 compensation points Arabidopsis thaliana
bou-2 mutant shows decreased glutamate concentration Arabidopsis thaliana
bou-2 mutant shows increased 2-oxoglutarate Arabidopsis thaliana
bou-2 mutant is compared to (SHM1, SHMT1, STM, AT4G37930) mutant Arabidopsis thaliana
glycine (Gly) levels were elevated two- to threefold in all mutants at growth conditions Arabidopsis thaliana
simulations tested the effect of photorespiration Chlamydomonas reinhardtii
Rubisco uses as substrate oxygen
any state of plant metabolism that involves simultaneous photorespiration and photoassimilation can be represented as weighted combination of modes for the two functions
enzyme kinetic characteristics will play a role in determining which modes are operational in given circumstances
AGAT reaction can bypass (AOAT1, GGAT1, GGT1, AT1G23310) reaction
malate is ultimately derived from chloroplast
oxaloacetate is exported from mitochondrion
ATP yield is less than a third of the amount that same number of photons could generate through cyclic photophosphorylation
peroxisomes house glutamate-glyoxylate aminotransferase (GGAT)
transamination of serine by (AGT, AGT1, SGAT, AT2G13360) yields hydroxypyruvate
bou-2 seedlings are unable to undergo transition to autotrophy
ABOUT DE SOUFFLE (BOU, AT5G46800) protein has central role in transport of unknown compound crucial for glycine decarboxylase (GDC) activity
disturbed glycine/serine homeostasis in bou-2 is hypothesized to be caused by defect in photorespiratory glycine oxidation Arabidopsis thaliana
set of reactions common to all elementary modes showed good agreement with gene products of mutants with defective photorespiratory phenotype
(AGT, AGT1, SGAT, AT2G13360) has some AGAT activity
photorespiratory intermediates (glycine, serine and glycerate) show particularly large diurnal changes diurnal cycle
elementary flux modes include modes involving ATP production
modes not involving mitMDH are unable to support wild-type rates of photorespiration
part of excess reductant can be shared with mitochondrial respiration for ATP generation
precise balance of CO2 and O2 is preserved when additional reductant is generated in chloroplast and exported to cytosol
Hydroxypyruvate (Hpyr) is converted into glycerate by hydroxypyruvate reductase 2 (HPR2) Arabidopsis thaliana
radiogasometric measurements show photorespiratory CO2 evolution Flaveria cronquistii; Flaveria pubescens; Flaveria trinervia
photorespiration results in recycling of photorespiratory intermediates
one hybrid has C3-like carbon isotope ratios indicating low Γ is mainly due to photorespiratory glycine shuttle Atriplex prostrata; Atriplex rosea
glycerate pathway is not active owing to complex evolution of plants in terrestrial environment
Asn is amino group donor for synthesis of photorespiratory intermediate Gly
Asn accumulation under chemical stress indicated involvement of photorespiratory pathway regulation in chemical stress responses Lolium perenne
down-regulation of TCA cycle activity was integrated with up-regulation in the flux through the photorespiration pathway Solanum lycopersicum
photorespiration has interactions with nitrogen (N) metabolism
glycolate moves through protein pore PM22
increase in (ATHPR1, HPR, AT1G68010) and CAT enzymatic activity due to sulfide under APC could be a way of regulating the activity of these enzymes under conditions where the photorespiratory cycle is operative Arabidopsis thaliana
emissions of 13 CO 2 reached maximum roughly 4 h later Inga edulis
altered metabolism in LPLA RNAi plants shows minor adjustments of photorespiratory cycle Arabidopsis thaliana
P-protein transcript level in (AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370) mutant is increased in controls and following antimycin A treatment (AOX1A, ATAOX1A, AtHSR3, HSR3, AT3G22370) mutant
uncoupling protein 1 appear to have a role in photorespiration
transformations of glyoxylate to glycine to serine to hydroxypyruvate involve one internal serine:glyoxylate aminotransferase reaction
Rubisco produces 2-phosphoglycolate (2PG)
photorespiration was identified as loss of freshly assimilated CO2 to the atmosphere
serine hydroxymethyltransferase (SHMT) produces 5-formyl-THF
photorespiration does not impact CO2:O2 ratio
modes associated with concomitant nitrate reduction impact CO2:O2 ratio
(AOAT1, GGAT1, GGT1, AT1G23310) catalyzes AGAT reaction
chloroplast glycerate kinase mutant displays defective photorespiratory phenotype
16 modes involving net evolution of O2 involve excess reductant generation because of complete reliance on non-cyclic light reaction
additional reductant for operation of GSH-ASC cycle is in direct competition with that for NO3− reduction
PR phenotypes can change in response to environmental factors
specific reactions in photorespiration exhibited substantial genetic variation for flux plasticity Arabidopsis thaliana