Abstract
The aims of this study were to study the biochemical metabolism alterations generated by saline stress in two cowpea cultivars: BRS Guariba (moderately tolerant) and BR3 Tracuateua (sensitive), and to investigate the action of brassinosteroid in attenuation of oxidative stress. The results for water content and damage index in cell membranes were similar. Plants with 24-Epibrassinolide hormone maintained their water content satisfactory and without any membrane extravasation, whereas, for plants with salinity these variables decreased considerably. The results showed that salinity increased sodium (Na+) contents and reduced potassium (K+) content, which caused water increases allowing a higher dilution of sodium ions (Na+), avoiding cellular toxicity. The antioxidant defense system of these plants (catalase, superoxide dismutase, ascorbate peroxidase, and guaiacol peroxidase) were activated mainly in characterization of salt stress, increasing their concentrations trying to avoid toxicity. The association of brassine and salinity caused reduction of lipid peroxidation characterized by malondialdehyde variable. These results corroborated the efficacy of the brassine hormone in cowpea plants under saline stress, characterizing as a plant plasticity.
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Claims 6
Claim · model-written summary
24-Epibrassinolide maintained plant water content under salinity.
Verbatim
e0“Plants with 24-Epibrassinolide hormone maintained their water content satisfactory and without any membrane extravasation, whereas, for plants with salinity these variables decreased considerably.”
Claim · model-written summary
24-Epibrassinolide plants had no membrane extravasation.
- Taxon
- PlantsViridiplantaee0
- Treatment
- 24-Epibrassinolidee0
- Outcome
- membrane extravasatione0
- Comparator
- plants with salinitye0
Not reportedDirection
Verbatim
e0“Plants with 24-Epibrassinolide hormone maintained their water content satisfactory and without any membrane extravasation, whereas, for plants with salinity these variables decreased considerably.”
Claim · model-written summary
Salinity raised sodium content.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- salinitye0
- Outcome
- sodium (Na+) contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity increased sodium (Na+) contents and reduced potassium (K+) content”
t0“cowpea cultivars”
Claim · model-written summary
Salinity reduced potassium content.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- salinitye0
- Outcome
- potassium (K+) contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity increased sodium (Na+) contents and reduced potassium (K+) content”
t0“cowpea cultivars”
Claim · model-written summary
Salt stress activated antioxidant defense enzymes.
- Taxon
- plantsViridiplantaee0
- Treatment
- salt stresse0
- Outcome
- antioxidant defense systeme0
- Direction
- activatede0
Not reportedComparator
Verbatim
e0“The antioxidant defense system of these plants (catalase, superoxide dismutase, ascorbate peroxidase, and guaiacol peroxidase) were activated mainly in characterization of salt stress, increasing their concentrations trying to avoid toxicity.”
Claim · model-written summary
Brassine with salinity reduced lipid peroxidation.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- brassine and salinitye0
- Outcome
- lipid peroxidatione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The association of brassine and salinity caused reduction of lipid peroxidation characterized by malondialdehyde variable.”
t0“cowpea cultivars”
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See all 11 papers →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.