Abstract
Ascorbic acid (AsA) is naturally occurring compound with antioxidant activity and plays a pivotal role in plant cell adaptation to salinity stress. The objective of this work was to assess the influence of exogenous AsA on the embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74 cultivated under saline conditions. NaCl (200 mM) decreased callus fresh and dry masses, relative growth rate, and K+ and Ca+2 content, and increased Na+ content and Na+/K+ ratio. Application of AsA (0.5 or 1 mM) alleviated these effects of salinity. Activities of peroxidase, catalase, superoxide dismutase, as well as content of proline increased due to the NaCl treatment, and these parameters were mostly further increased by 0.5 mM AsA. Thus, AsA can increase callus tolerance to NaCl stress.
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Claims 8
Claim · model-written summary
200 mM NaCl decreased callus fresh and dry masses of rice.
- Taxon
- indica rice (Oryza sativa L.)
Oryza sativae0 - Material
- cv. MRQ74e0
- Organ / stage
- embryogenic calluse0
- Treatment
- NaCl (200 mM)e1
- Outcome
- callus fresh and dry massese1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74”
e1“NaCl (200 mM) decreased callus fresh and dry masses, relative growth rate, and K+ and Ca+2 content, and increased Na+ content and Na+/K+ ratio”
Claim · model-written summary
200 mM NaCl decreased relative growth rate and K+ and Ca+2 content of rice callus.
- Taxon
- indica rice (Oryza sativa L.)Oryza sativae0
- Material
- cv. MRQ74e0
- Organ / stage
- embryogenic calluse0
- Treatment
- NaCl (200 mM)e1
- Outcome
- relative growth rate, and K+ and Ca+2 contente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74”
e1“NaCl (200 mM) decreased callus fresh and dry masses, relative growth rate, and K+ and Ca+2 content, and increased Na+ content and Na+/K+ ratio”
Claim · model-written summary
200 mM NaCl increased Na+ content and Na+/K+ ratio of rice callus.
- Taxon
- indica rice (Oryza sativa L.)Oryza sativae0
- Material
- cv. MRQ74e0
- Organ / stage
- embryogenic calluse0
- Treatment
- NaCl (200 mM)e1
- Outcome
- Na+ content and Na+/K+ ratioe1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74”
e1“NaCl (200 mM) decreased callus fresh and dry masses, relative growth rate, and K+ and Ca+2 content, and increased Na+ content and Na+/K+ ratio”
Claim · model-written summary
NaCl treatment increased the activities of peroxidase, catalase and superoxide dismutase in rice callus.
- Taxon
- indica rice (Oryza sativa L.)Oryza sativae0
- Material
- cv. MRQ74e0
- Organ / stage
- embryogenic calluse0
- Treatment
- NaCl treatmente3
- Outcome
- Activities of peroxidase, catalase, superoxide dismutasee3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74”
e3“Activities of peroxidase, catalase, superoxide dismutase, as well as content of proline increased due to the NaCl treatment, and these parameters were mostly further increased by 0.5 mM AsA”
Claim · model-written summary
NaCl treatment increased proline content of rice callus.
- Taxon
- indica rice (Oryza sativa L.)Oryza sativae0
- Material
- cv. MRQ74e0
- Organ / stage
- embryogenic calluse0
- Treatment
- NaCl treatmente3
- Outcome
- content of prolinee3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74”
e3“Activities of peroxidase, catalase, superoxide dismutase, as well as content of proline increased due to the NaCl treatment, and these parameters were mostly further increased by 0.5 mM AsA”
Claim · model-written summary
Application of 0.5 or 1 mM AsA alleviated the effects of salinity on rice callus.
- Taxon
- indica rice (Oryza sativa L.)Oryza sativae0
- Material
- cv. MRQ74e0
- Organ / stage
- embryogenic calluse0
- Treatment
- AsA (0.5 or 1 mM)e2
- Outcome
- effects of salinitye2
- Direction
- alleviatede2
- Comparator
- salinitye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74”
e2“Application of AsA (0.5 or 1 mM) alleviated these effects of salinity”
Claim · model-written summary
0.5 mM AsA further increased the activities of antioxidant enzymes and proline content of NaCl-stressed rice callus, mostly.
- Taxon
- indica rice (Oryza sativa L.)Oryza sativae0
- Material
- cv. MRQ74e0
- Organ / stage
- embryogenic calluse0
- Treatment
- 0.5 mM AsAe3
- Outcome
- these parameterse3
- Direction
- further increasede3
- Qualifier
- mostlye3
- Comparator
- NaCl treatmente3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74”
e3“Activities of peroxidase, catalase, superoxide dismutase, as well as content of proline increased due to the NaCl treatment, and these parameters were mostly further increased by 0.5 mM AsA”
Claim · model-written summary
The authors conclude that AsA can increase callus tolerance to NaCl stress in rice.
- Taxon
- indica rice (Oryza sativa L.)Oryza sativae0
- Treatment
- AsAe4
- Outcome
- callus tolerance to NaCl stresse4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“embryogenic callus of indica rice (Oryza sativa L.) cv. MRQ74”
e4“Thus, AsA can increase callus tolerance to NaCl stress”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.