TY - JOUR
T1 - Fe deficiency induces phosphorylation and translocation of Lhcb1 in barley thylakoid membranes
AU - Saito, Akihiro
AU - Shimizu, Mizuho
AU - Nakamura, Hitomi
AU - Maeno, Shoko
AU - Katase, Riko
AU - Miwa, Eitaro
AU - Higuchi, Kyoko
AU - Sonoike, Kintake
N1 - Funding Information:
This work was supported in part by Grants for Research Fellows of the Japan Society for the Promotion of Science (No. 08J07577 to A.S.) and by Grant-in-Aid for Young Scientist (B) (No. 24780060 to A.S.) from the Ministry of Education, Culture, Sports, Science, and Technology .
PY - 2014/7/5
Y1 - 2014/7/5
N2 - 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.
AB - 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.
KW - Barley
KW - Iron deficiency
KW - Light-harvesting antenna complex II
KW - Non-photochemical quenching
KW - Photosynthetic electron transport
KW - Protein phosphorylation
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U2 - 10.1016/j.febslet.2014.04.031
DO - 10.1016/j.febslet.2014.04.031
M3 - Article
C2 - 24815689
AN - SCOPUS:84901423633
SN - 0014-5793
VL - 588
SP - 2042
EP - 2048
JO - FEBS Letters
JF - FEBS Letters
IS - 12
ER -
