Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10870470 | FEBS Letters | 2014 | 7 Pages |
Abstract
HvLhcb1 a major light-harvesting chlorophyll a/b-binding protein in barley, is a critical player in sustainable growth under Fe deficiency. Here, we demonstrate that Fe deficiency induces phosphorylation of HvLhcb1 proteins leading to their migration from grana stacks to stroma thylakoid membranes. HvLhcb1 remained phosphorylated even in the dark and apparently independently of state transition, which represents a mechanism for short-term acclimation. Our data suggest that the constitutive phosphorylation-triggered translocation of HvLhcb1 under Fe deficiency contributes to optimization of the excitation balance between photosystem II and photosystem I, the latter of which is a main target of Fe deficiency.
Keywords
Lhcb1maximum quantum yield of photosystem IILHCIINPQPAMPSIPSIIChlPPFDFv/FmTemLHCBarleyPhotosynthetic electron transportNon-photochemical quenchingChlorophyllphotosystem Iphotosynthetic photon flux densityPhotosystem IIProtein phosphorylationFar-redLight-harvesting complexLight-harvesting complex of photosystem IIpulse amplitude modulationTransmission electron microscopyIron deficiency
Related Topics
Life Sciences
Agricultural and Biological Sciences
Plant Science
Authors
Akihiro Saito, Mizuho Shimizu, Hitomi Nakamura, Shoko Maeno, Riko Katase, Eitaro Miwa, Kyoko Higuchi, Kintake Sonoike,