Abstract
Impacts of increasing environmental stresses (such as drought) on crop productivity can be sustainably minimized by optimizing mineral nutrients (such as sulfur, S). This study, based on a pot-culture experiment conducted in greenhouse condition, investigates S-mediated influence of drought stress (imposed at pre-flowering, flowering and pod-filling stages) on growth, photosynthesis and tolerance of mungbean (Vigna radiata L.) plants. Drought stress alone hampered photosynthesis functions, enhanced oxidative stress [measured in terms of H2O2; lipid peroxidation (LPO); electrolyte leakage (EL)] and decreased the pools of cellular redox buffers (namely ascorbate (AsA); glutathione (GSH)], and the overall plant growth (measured as leaf area and plant dry mass), maximally at flowering stage, followed by pre-flowering and pod-filling stages. Contrarily, S-supplementation to drought-affected plants (particularly at flowering stage) improved the growth- and photosynthesis-related parameters considerably. This may be ascribed to S-induced enhancements in the pools of reduced AsA and GSH, which jointly manage the balance between the production and scavenging of H2O2 and stabilize cell membrane by decreasing LPO and EL. It is inferred that alleviation of drought-caused oxidative stress depends largely on the status of AsA and GSH via S-application to drought-stressed V. radiata at an appropriate stage of plant growth, when this nutrient is maximally or efficiently utilized.
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Claims 8
Claim · model-written summary
Drought impaired photosynthesis, most at flowering.
Not reportedTaxonComparator
Verbatim
e0“Drought stress alone hampered photosynthesis functions”
Claim · model-written summary
Drought increased oxidative stress markers H2O2, LPO and EL.
- Taxon
- mungbean (Vigna radiata L.)
.jpg?width=60)
Vigna radiatat0 - Treatment
- droughtt0
- Outcome
- oxidative stress [measured in terms of H2O2; lipid peroxidation (LPO); electrolyte leakage (EL)]e0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“enhanced oxidative stress [measured in terms of H2O2; lipid peroxidation (LPO); electrolyte leakage (EL)]”
t0“drought-exposed mungbean (Vigna radiata L.)”
Claim · model-written summary
Drought decreased ascorbate and glutathione pools.
- Taxon
- mungbean (Vigna radiata L.)Vigna radiatat0
- Treatment
- droughtt0
- Outcome
- pools of cellular redox buffers (namely ascorbate (AsA); glutathione (GSH)]e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased the pools of cellular redox buffers (namely ascorbate (AsA); glutathione (GSH)]”
t0“drought-exposed mungbean (Vigna radiata L.)”
Claim · model-written summary
Drought decreased leaf area and dry mass most at flowering.
- Taxon
- mungbean (Vigna radiata L.)Vigna radiatat0
- Treatment
- droughtt0
- Outcome
- leaf area and plant dry masse0
- Qualifier
- maximally at flowering stagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the overall plant growth (measured as leaf area and plant dry mass), maximally at flowering stage”
t0“drought-exposed mungbean (Vigna radiata L.)”
Claim · model-written summary
Sulfur supplementation improved growth parameters in drought-affected plants, especially at flowering.
- Taxon
- mungbean (Vigna radiata L.)Vigna radiatat0
- Treatment
- S-supplementatione0
- Outcome
- growth- and photosynthesis-related parameterse0
- Direction
- improvede0
- Qualifier
- particularly at flowering stagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S-supplementation to drought-affected plants (particularly at flowering stage) improved the growth- and photosynthesis-related parameters considerably”
t0“drought-exposed mungbean (Vigna radiata L.)”
Claim · model-written summary
Sulfur increased reduced ascorbate and glutathione pools.
- Taxon
- mungbean (Vigna radiata L.)Vigna radiatat0
- Treatment
- S-inducede0
- Outcome
- pools of reduced AsA and GSHe0
- Direction
- enhancementse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S-induced enhancements in the pools of reduced AsA and GSH”
t0“drought-exposed mungbean (Vigna radiata L.)”
Claim · model-written summary
Sulfur-mediated redox buffers were proposed to balance H2O2 production and scavenging.
- Taxon
- mungbean (Vigna radiata L.)Vigna radiatat0
- Outcome
- balance between the production and scavenging of H2O2e0
- Qualifier
- pools of reduced AsA and GSHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pools of reduced AsA and GSH, which jointly manage the balance between the production and scavenging of H2O2”
t0“drought-exposed mungbean (Vigna radiata L.)”
Claim · model-written summary
Sulfur-mediated responses were proposed to stabilize membranes through lower LPO and EL.
- Taxon
- mungbean (Vigna radiata L.)Vigna radiatat0
- Outcome
- cell membranee0
- Qualifier
- decreasing LPO and ELe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stabilize cell membrane by decreasing LPO and EL”
t0“drought-exposed mungbean (Vigna radiata L.)”
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