UV-B Physiological Changes Under Conditions of Distress and Eustress in Sweet Basil.

ABSTRACT: UV-B radiation has been previously reported to induce protective or deleterious effects on plants depending on the UV-B irradiation doses. To elucidate how these contrasting events are physiologically coordinated, we exposed sweet basil plants to two UV-B doses: low (8.5 kJ m^-2 day^-1, 30 min exposure) and high (68 kJ m^-2 day^-1, 4 h exposure), with the plants given both doses once continuously in a single day. Physiological tests during and after both UV-B exposures were performed by comparing the stress-induced damage and adverse effects on photosynthetic activity, the concentration and composition of photosynthetic and non-photosynthetic pigments, and stress-related hormones biosynthesis in basil plants. Our results showed that upon receiving a

SUBMITTER: Mosadegh H 

PROVIDER: S-EPMC6843199 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature