Differential responses of pea seedlings to salicylic acid under UV-B stress

Abstract

Abstract:In nature, plants are continuously exposed to solar light. They cannot avoid exposure to UV-B radiation. The purpose of this investigation was to examine how UV-B radiation affects seed germination, seedling growth, protein and sugar contents and activities of antioxidant enzymes in pea (Pisum sativum) seedlings. Salicylic acid mediated physiological responses in UV-B stressed pea seedlings. UV-B exposure adversely affected germination and physiology of Pisum sativum L. Salicylic acid mitigated the impacts of UV-B stress. Seed germination decreased with increased duration of UV-B exposure. Enhanced activities of antioxidant enzymes in response to UV-B radiation played a protective role against UV-B radiation.

Comparative Transcriptomic and Metabolomic Analyses of Differences in Trunk Spiral Grain in Pinus yunnanensis

“…The production and regulation of secondary metabolites are closely related to the phenotypic plasticity of organisms [36]. In the process of adapting to environmental changes, organisms produce different types of secondary metabolites in response to different stresses and challenges [30]; for instance, there are significant changes in the levels of antioxidant enzymes (such as superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and guaiacol peroxidase (GPX)) in Pisum sativum seeds under salicylic acid and ultraviolet-B stresses [37]. The levels of phenolic pigments, carotenoids, and antioxidant enzymes differ in Solanum lycopersicum seeds following UV-B radiation and benzoic acid (BA) treatment, and all of the metabolites affect plant growth [38].…”

“…The levels of phenolic pigments, carotenoids, and antioxidant enzymes differ in Solanum lycopersicum seeds following UV-B radiation and benzoic acid (BA) treatment, and all of the metabolites affect plant growth [38]. Some plants produce more antioxidants in response to oxidative damage when they are subjected to external environmental stresses, thereby altering their growth and morphological characteristics [30,39], such as P. sativum [37] and S. lycopersicum [40]. By modulating the production and regulation of secondary metabolites, organisms can adapt to environmental changes and alter their phenotypic characteristics, thereby enhancing their ability to survive and reproduce [41].…”