Photosynthetic signalling during high light stress and recovery: targets and dynamics.

ABSTRACT: The photosynthetic apparatus is one of the major primary sensors of the plant's external environment. Changes in environmental conditions affect the balance between harvested light energy and the capacity to deal with excited electrons in the stroma, which alters the redox homeostasis of the photosynthetic electron transport chain. Disturbances to redox balance activate photosynthetic regulation mechanisms and trigger signalling cascades that can modify the transcription of nuclear genes. H₂O₂ and oxylipins have been identified as especially prominent regulators of gene expression in response to excess light stress. This paper explores the hypothesis that photosynthetic imbalance triggers specific signals that target discrete gene profiles and biological processes. An

SUBMITTER: Gollan PJ 

PROVIDER: S-EPMC7209949 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature