Identification of STN7-associated leaf senescence networks in thylakoid membranes of Arabidopsis.

ABSTRACT: Photosynthetic protein complexes in thylakoid membranes disassemble during leaf senescence, leading to a decline in photosynthetic efficiency. However, the mechanisms by which these protein complexes in chloroplast thylakoid membranes modulate leaf senescence are poorly understood. This study investigated the roles of Arabidopsis thaliana STN7 and STN8 kinases during leaf senescence using proteomic tools, characterizing STN7 and STN8 overexpressors and loss-of-function mutants. During leaf senescence, proteins involved in photosynthesis-associated processes decreased, while those related to lipid metabolism and jasmonic acid-mediated stress responses increased. The abundance and phosphorylation of the thylakoid membrane proteome were regulated by STN7, but not by STN8. Thirty-four S

SUBMITTER: Lee S 

PROVIDER: S-EPMC12670243 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature