عنوان مجله
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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چکیده
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Advances in the nanotechnology fields provided crucial applications in plant sciences, contributing to the plant
performance and health under stress and stress-free conditions. Amid the applications, selenium (Se), chitosan
and their conjugated forms as nanoparticles (Se-CS NPs) have been revealed to have potential of alleviating the
harmful effects of the stress on several crops and subsequently enhancing the growth and productivity. The
present study was addressed to assay the potential effects of Se-CS NPs in reversing or buffering the harmful
effects of salt stress on growth, photosynthesis, nutrient concentration, antioxidant system and defence transcript
levels in bitter melon )Momordica charantia(. In addition, some secondary metabolite-related genes were
explicitly examined. In this regard, the transcriptional levels of WRKY1, SOS1, PM H+-ATPase, SKOR,
Mc5PTase7, SOAR1, MAP30, α-MMC, polypeptide-P and PAL were quantified. Our results demonstrated that Se-CS
NPs increased growth parameters, photosynthesis parameters (SPAD, Fv/Fm, Y(II)), antioxidant enzymatic activity
(POD, SOD, CAT) and nutrient homeostasis (Na+/K+, Ca2+, and Cl− ) and induced the expression of genes in
bitter melon plants under salt stress (p ≤ 0.05). Therefore, applying Se-CS NPs might be a simple and effective
way of improving crop plants' overall health and yield under salt stress conditions.
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