Antenna complexes protect Photosystem I from photoinhibition.

ABSTRACT:

Background

Photosystems are composed of two moieties, a reaction center and a peripheral antenna system. In photosynthetic eukaryotes the latter system is composed of proteins belonging to Lhc family. An increasing set of evidences demonstrated how these polypeptides play a relevant physiological function in both light harvesting and photoprotection. Despite the sequence similarity between antenna proteins associated with the two Photosystems, present knowledge on their physiological role is mostly limited to complexes associated to Photosystem II.

Results

In this work we analyzed the physiological role of Photosystem I antenna system in Arabidopsis thaliana both in vivo and in vitro. Plants depleted in individual antenna polypeptides showed a reduced capacity for photoprote

SUBMITTER: Alboresi A 

PROVIDER: S-EPMC2704212 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature