Abstract
To investigate the physiological and metabolic attributes of arsenic (As) stress tolerance conferred by exogenous salicylic acid (SA), Glycine max L. (variety JS 335) seeds were aseptically germinated over filter paper moistened with SA (500 µM) and/or10 and 100 µM As (Sodium arsenite was used).On 2 nd and 5 th days of germination, the growing radicles were harvested, and analyzed for growth and different metabolic attributes.Findings exemplified that As significantly decreased germination percentage, radicle length, dry mass and activities of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX), while stimulated the contents of As, reactive oxygen species (ROS), lipoxygenase (LOX), guaiacol peroxidase (POD) and proline.Additionally, isozymes of antioxidants were also scrutinized over Native-PAGE gels and were found to be altered considerably under As-stress.However, exogenous SA remarkably enhanced germination percentage, growth indices, activities of SOD, CAT and APX, and proline accumulation along with reduced As, ROS and LOX, and restoring POD in As-stressed seedlings.In conclusion, SA confers As-stress tolerance to Glycine max L. by regulating the antioxidant enzymes and proline accumulation thereby reduced As content and ROS production.Further study is intended, particularly at gene level, to understand precise mechanism(s) involved in SA-mediated Asstress tolerance.
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Claims 7
Claim · model-written summary
Arsenic significantly decreased soybean germination, radicle length and dry mass.
- Taxon
- Glycine max L.
Glycine maxt0 - Treatment
- Ase0
- Outcome
- germination percentage, radicle length, dry masse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As significantly decreased germination percentage, radicle length, dry mass and activities of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX)”
t0“Glycine max L.”
Claim · model-written summary
Arsenic significantly decreased SOD, CAT and APX activities.
- Taxon
- Glycine max L.Glycine maxt0
- Treatment
- Ase0
- Outcome
- activities of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As significantly decreased germination percentage, radicle length, dry mass and activities of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX)”
t0“Glycine max L.”
Claim · model-written summary
Arsenic stimulated accumulation of As, ROS and proline.
- Taxon
- Glycine max L.Glycine maxt0
- Treatment
- Ase0
- Outcome
- contents of As, reactive oxygen species (ROS), lipoxygenase (LOX), guaiacol peroxidase (POD) and prolinee0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stimulated the contents of As, reactive oxygen species (ROS), lipoxygenase (LOX), guaiacol peroxidase (POD) and proline”
t0“Glycine max L.”
Claim · model-written summary
Antioxidant isozymes were altered under arsenic stress.
- Taxon
- Glycine max L.Glycine maxt0
- Treatment
- As-stresse0
- Outcome
- isozymes of antioxidantse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isozymes of antioxidants were also scrutinized over Native-PAGE gels and were found to be altered considerably under As-stress”
t0“Glycine max L.”
Claim · model-written summary
Salicylic acid enhanced germination and growth indices in arsenic-stressed seedlings.
- Taxon
- Glycine max L.Glycine maxt0
- Treatment
- exogenous SAe0
- Outcome
- germination percentage, growth indicese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous SA remarkably enhanced germination percentage, growth indices, activities of SOD, CAT and APX, and proline accumulation”
t0“Glycine max L.”
Claim · model-written summary
Salicylic acid enhanced SOD, CAT and APX activities and proline accumulation in arsenic-stressed seedlings.
- Taxon
- Glycine max L.Glycine maxt0
- Treatment
- exogenous SAe0
- Outcome
- activities of SOD, CAT and APX, and proline accumulatione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous SA remarkably enhanced germination percentage, growth indices, activities of SOD, CAT and APX, and proline accumulation”
t0“Glycine max L.”
Claim · model-written summary
Salicylic acid reduced As, ROS and LOX and restored POD in arsenic-stressed seedlings.
- Taxon
- Glycine max L.Glycine maxt0
- Treatment
- exogenous SAe1
- Outcome
- As, ROS and LOXe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced As, ROS and LOX, and restoring POD in As-stressed seedlings”
e1“exogenous SA remarkably enhanced”
t0“Glycine max L.”
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