Ontology highlight
ABSTRACT:
SUBMITTER: Ramel F
PROVIDER: S-EPMC3325660 | biostudies-literature | 2012 Apr
REPOSITORIES: biostudies-literature
Proceedings of the National Academy of Sciences of the United States of America 20120319 14
(1)O(2) (singlet oxygen) is a reactive O(2) species produced from triplet excited chlorophylls in the chloroplasts, especially when plants are exposed to excess light energy. Similarly to other active O(2) species, (1)O(2) has a dual effect: It is toxic, causing oxidation of biomolecules, and it can act as a signal molecule that leads to cell death or to acclimation. Carotenoids are considered to be the main (1)O(2) quenchers in chloroplasts, and we show here that light stress induces the oxidat ...[more]