Influence of Methyl Jasmonate and Short-Term Water Deficit on Growth, Redox System, Proline and Wheat Germ Agglutinin Contents of Roots of Wheat Seedlings
Alsu R. Lubyanova
TL;DR
This study shows that methyl jasmonate helps wheat seedlings tolerate drought by reducing oxidative stress and improving root health.
Contribution
The novel finding is that methyl jasmonate pretreatment mitigates drought stress effects in wheat roots by regulating antioxidants, proline, and wheat germ agglutinin.
Findings
Methyl jasmonate pretreatment reduces oxidative stress markers like O2•− and H2O2 in wheat roots under drought.
MeJA increases antioxidant enzyme activity and decreases cell death and electrolyte leakage in stressed wheat roots.
MeJA reduces proline exudation into the medium while maintaining wheat germ agglutinin at control levels during drought.
Abstract
Drought is a serious environmental problem that limits the yield of wheat around the world. Using biochemical and microscopy methods, it was shown that methyl jasmonate (MeJA) has the ability to induce the oxidative stress tolerance in roots of wheat plants due to the regulation of antioxidant enzymes activity, proline (Pro), and wheat germ agglutinin (WGA) accumulation. During the first hours of 12% polyethylene glycol (PEG) exposure, stress increased the superoxide radical (O2•−) and the hydrogen peroxide (H2O2) accumulation, the activity of superoxide dismutase (SOD), total peroxidase (POD), ascorbate peroxidase (APX), catalase (CAT), the percent of dead cells (PDC), malondialdehyde accumulation (MDA), and electrolyte leakage (EL) of wheat roots as compared to the control. Stress enhanced proline (Pro) and wheat germ agglutinin (WGA) contents in roots and the plant’s nutrient medium,…
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Taxonomy
TopicsPlant Stress Responses and Tolerance · Plant responses to water stress · Allelopathy and phytotoxic interactions