Abstract
Abstract Drought stress is a critical factor limiting maize productivity by impairing physiological and biochemical processes. Current experiment was carried out to investigate single and collaborative potential of silicon (Si) and brassinosteroids (BR) to alleviate the negative impact of drought on maize. Experiment was comprised of control treatment 80% water holding capacity (WHC), 40% WHC drought (DS), DS + 4 mM Si, DS + 5 µM BR and DS + 4 mM Si + 5 µM BR. Physiological assessment revealed that Si and BR application significantly mitigated drought-induced reductions in photosynthetic pigments and photosynthetic rate which improved photosynthetic efficiency. Moreover, biochemical analysis showed that treated plants exhibited elevated enzymatic antioxidant activities such as catalase, peroxidase and superoxide dismutase that caused reduction in oxidative stress. These enhancements in antioxidant defense were correlated with lower levels of malondialdehyde (MDA) by reducing membrane lipid peroxidation under drought conditions. Additionally, Si and BR treatments promoted osmotic adjustment by increasing the concentration of osmolytes, which helped to maintain cellular turgor and water retention. Overall, the collective use of Si and BR showed more effective results than individual treatments, enhancing maize crop’s drought tolerance by enhancing the photosynthetic efficiency, antioxidants activities, and improving osmotic balance. These outcomes climax the potential of Si and BR as agronomic strategies for sustaining maize productivity under drought stress, providing insights into physiological and biochemical pathways that could be targeted in future crop improvement programs.
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Claims 5
Claim · model-written summary
Silicon and brassinosteroids mitigated drought reduction of pigments and photosynthetic rate.
- Treatment
- Si and BR applicatione0
- Outcome
- photosynthetic pigments and photosynthetic ratee0
- Direction
- mitigatede0
- Comparator
- drought-inducede0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si and BR application significantly mitigated drought-induced reductions in photosynthetic pigments and photosynthetic rate”
t0“Maize”
Claim · model-written summary
Treated plants showed elevated antioxidant enzyme activities.
- Treatment
- treated plantse0
- Gene
- catalase, peroxidase and superoxide dismutasee0
- Outcome
- enzymatic antioxidant activitiese0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treated plants exhibited elevated enzymatic antioxidant activities such as catalase, peroxidase and superoxide dismutase”
t0“Maize”
Claim · model-written summary
Antioxidant enhancements were associated with lower malondialdehyde.
- Treatment
- antioxidant defensee0
- Outcome
- levels of malondialdehyde (MDA)e0
- Direction
- lowere0
- Qualifier
- enhancements in antioxidant defensee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhancements in antioxidant defense were correlated with lower levels of malondialdehyde (MDA)”
t0“Maize”
Claim · model-written summary
Silicon and brassinosteroids increased osmolytes under drought.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si and BR treatments promoted osmotic adjustment by increasing the concentration of osmolytes”
t0“Maize”
Claim · model-written summary
Combined silicon and brassinosteroids improved drought tolerance more than individual treatments.
- Treatment
- collective use of Si and BRe0
- Outcome
- maize crop’s drought tolerancee0
- Direction
- enhancinge0
- Comparator
- individual treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“collective use of Si and BR showed more effective results than individual treatments, enhancing maize crop’s drought tolerance”
t0“Maize”
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