Abstract
To investigate the effects of water stress on glycolate metabolism, seedlings of a drought‐tolerant cultivar (N‐22) and a susceptible cultivar (Jaya) of Oryza sativa L. were subjected to water stress for 5, 8 or 10 days. Increasing the duration of water‐deficit‐stress produced a proportional decrease in relative water content and leaf water potential, reduced glycolate content and catalase (EC 1.11.1.6) activity, but increased glycolate oxidase (EC 1.1.3.1) activity, hydrogen peroxide and glyoxylate contents in the leaves of both cultivars. In a radiotracer experiment, with increasing duration of water stress, the proportion of label increased in 3‐phosphoglycerate, glycolate, glycine and serine. The drought‐tolerant cultivar (N‐22) was affected less than the susceptible cultivar (Jaya). The glycolate pathway metabolism is discussed in relation to photorespiration and the effects of water stress.
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Claims 5
Claim · model-written summary
Longer water stress produced a proportional decrease in relative water content and leaf water potential in rice.
- Taxon
- Oryza sativa
Oryza sativae1 - Treatment
- water stresse1
- Outcome
- relative water content and leaf water potentiale2
- Direction
- proportional decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“of Oryza sativa L. were subjected to water stress for 5, 8 or 10 days”
e2“produced a proportional decrease in relative water content and leaf water potential”
Claim · model-written summary
Water stress reduced glycolate content and catalase activity in rice.
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- water stresse1
- Outcome
- glycolate content and catalase (EC 1.11.1.6) activitye3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“of Oryza sativa L. were subjected to water stress for 5, 8 or 10 days”
e3“reduced glycolate content and catalase (EC 1.11.1.6) activity”
Claim · model-written summary
Water stress increased glycolate oxidase activity, hydrogen peroxide and glyoxylate contents in rice leaves.
- Taxon
- Oryza sativaOryza sativae1
- Organ / stage
- leavese4
- Treatment
- water stresse1
- Outcome
- glycolate oxidase (EC 1.1.3.1) activity, hydrogen peroxide and glyoxylate contentse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“of Oryza sativa L. were subjected to water stress for 5, 8 or 10 days”
e4“but increased glycolate oxidase (EC 1.1.3.1) activity, hydrogen peroxide and glyoxylate contents in the leaves of both cultivars”
Claim · model-written summary
With increasing water stress duration, the label proportion increased in glycolate, glycine and serine.
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- water stresse5
- Compound
- glycolate, glycine and serinee5
- Outcome
- proportion of labele5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“of Oryza sativa L. were subjected to water stress for 5, 8 or 10 days”
e5“with increasing duration of water stress, the proportion of label increased in 3‐phosphoglycerate, glycolate, glycine and serine”
Claim · model-written summary
The drought-tolerant rice cultivar was affected less by water stress than the susceptible cultivar (Jaya).
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- water stresse1
- Outcome
- affectede6
- Direction
- lesse6
- Comparator
- the susceptible cultivar (Jaya)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“of Oryza sativa L. were subjected to water stress for 5, 8 or 10 days”
e6“was affected less than the susceptible cultivar (Jaya)”