Abstract
The responses of indica and japonica rice seedlings to water stress were studied by supplying with different nitrogen forms under 100 g/L PEG6000 simulated water stress.The results showed that compared with ammonium nutrition,water stress significantly decreased shoot growth and photosynthesis of nitrate supplied indica and japonica rice seedlings with a more severe inhibition on japonica rice seedlings;under water stress,ammonium supplied rice plants could sufficiently accumulate and transfer amino acids and potassium,which led to relative higher amino acids and potassium contents in xylem and phloem sap;when leaf water potential decreased under water stress,ammonium supplied rice plants could enhance or maintain relative higher leaf water content through osmotic regulation.Therefore,when leaf water potential was decreased under water stress,the maintenance of leaf water content in ammonium supplied rice plants ensured relative higher photosynthesis,which subsequently enhanced the tolerance of rice plants to water stress.
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Claims 7
Claim · model-written summary
Under water stress, nitrate nutrition decreased shoot growth relative to ammonium in indica and japonica rice.
- Taxon
- rice
Oryza sativae0 - Treatment
- nitrate suppliede0
- Outcome
- shoot growthe0
- Direction
- decreasede0
- Comparator
- ammonium nutritione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with ammonium nutrition,water stress significantly decreased shoot growth and photosynthesis of nitrate supplied indica and japonica rice seedlings with a more severe inhibition on japonica rice seedlings”
Claim · model-written summary
Under water stress, nitrate nutrition decreased photosynthesis relative to ammonium in both rice groups.
- Taxon
- riceOryza sativae0
- Treatment
- nitrate suppliede0
- Outcome
- photosynthesise0
- Direction
- decreasede0
- Comparator
- ammonium nutritione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with ammonium nutrition,water stress significantly decreased shoot growth and photosynthesis of nitrate supplied indica and japonica rice seedlings with a more severe inhibition on japonica rice seedlings”
Claim · model-written summary
Japonica rice had more severe inhibition under water stress.
- Taxon
- riceOryza sativae0
- Material
- japonicae0
- Outcome
- inhibitione0
- Direction
- more severee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a more severe inhibition on japonica rice seedlings”
Claim · model-written summary
Ammonium supplied rice accumulated and transferred amino acids and potassium under water stress.
- Taxon
- riceOryza sativae0
- Treatment
- ammonium suppliede0
- Outcome
- accumulate and transfer amino acids and potassiume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under water stress,ammonium supplied rice plants could sufficiently accumulate and transfer amino acids and potassium”
Claim · model-written summary
Ammonium supplied rice had relatively higher amino acid and potassium contents in xylem and phloem sap.
- Taxon
- riceOryza sativat0
- Organ / stage
- xylem and phloem sape0
- Outcome
- amino acids and potassium contentse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative higher amino acids and potassium contents in xylem and phloem sap”
t0“rice”
Claim · model-written summary
Under declining leaf water potential, ammonium supplied rice maintained higher leaf water content through osmotic regulation.
- Taxon
- riceOryza sativae0
- Treatment
- ammonium suppliede0
- Outcome
- leaf water contente0
- Direction
- highere0
- Qualifier
- through osmotic regulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when leaf water potential decreased under water stress,ammonium supplied rice plants could enhance or maintain relative higher leaf water content through osmotic regulation”
Claim · model-written summary
Maintained water content under ammonium nutrition supported higher photosynthesis and water-stress tolerance.
- Taxon
- riceOryza sativae0
- Treatment
- ammonium suppliede0
- Outcome
- tolerance of rice plants to water stresse0
- Direction
- enhancede0
- Qualifier
- maintenance of leaf water contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the maintenance of leaf water content in ammonium supplied rice plants ensured relative higher photosynthesis,which subsequently enhanced the tolerance of rice plants to water stress”
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