Changes in Photosystem II Complex and Physiological Activities in Pea and Maize Plants in Response to Salt Stress.

ABSTRACT: Salt stress significantly impacts the functions of the photosynthetic apparatus, with varying degrees of damage to its components. Photosystem II (PSII) is more sensitive to environmental stresses, including salinity, than photosystem I (PSI). This study investigated the effects of different salinity levels (0 to 200 mM NaCl) on the PSII complex in isolated thylakoid membranes from hydroponically grown pea (Pisum sativum L.) and maize (Zea mays L.) plants treated with NaCl for 5 days. The data revealed that salt stress inhibits the photochemical activity of PSII (H₂O → BQ), affecting the energy transfer between the pigment-protein complexes of PSII (as indicated by the fluorescence emission ratio F₆₉₅/F₆₈₅), Q_A reoxidation, and the

SUBMITTER: Stefanov MA 

PROVIDER: S-EPMC11013719 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature