Photochemical Efficiency and Oxidative Metabolism of Tree Species during Acclimation to High and Low Irradiance.

ABSTRACT: The balance between efficiency of absorption and use of light energy is fundamental for plant metabolism and to avoid photoinhibition. Here, we investigated the effects of light environments on the photosynthetic apparatus of tropical tree species of three successional groups (pioneer, mid-, and late successional) subjected to different light conditions: full sunlight (FS), moderate shade (MS), and deep shade (DS). Twenty-nine ecophysiological parameters were correlated with each other. The pioneer species exhibited better photochemical performance and a more efficient antioxidant enzymatic system in comparison with the other successional groups. Plants in FS showed higher intensity of lipid peroxidation, with superoxide dismutase having a prominent role in the antioxidant system. At lower

SUBMITTER: da Rocha Nina Junior A 

PROVIDER: S-EPMC7463730 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature