Assessment of the Photosynthetic Apparatus Functions by Chlorophyll Fluorescence and P₇₀₀ Absorbance in C3 and C4 Plants under Physiological Conditions and under Salt Stress.

ABSTRACT: Functions of the photosynthetic apparatus of C3 (Pisum sativum L.) and C4 (Zea mays L.) plants under physiological conditions and after treatment with different NaCl concentrations (0-200 mM) were investigated using chlorophyll a fluorescence (pulse-amplitude-modulated (PAM) and JIP test) and P₇₀₀ photooxidation measurement. Data revealed lower density of the photosynthetic structures (RC/CSo), larger relative size of the plastoquinone (PQ) pool (N) and higher electron transport capacity and photosynthetic rate (parameter R_Fd) in C4 than in C3 plants. Furthermore, the differences were observed between the two studied species in the parameters characterizing the possibility of reduction in the photosystem (PSI) end acceptors (REo/RC, REo/CSo and δRo). Dat

SUBMITTER: Stefanov MA 

PROVIDER: S-EPMC8998893 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature