Occurrence of the PsbS and LhcSR products in the green alga Ulva linza and their correlation with excitation pressure

文献类型： 外文期刊

第一作者： Zhang, Xiaowen

作者： Zhang, Xiaowen;Ye, Naihao;Mou, Shanli;Xu, Dong;Fan, Xiao

作者机构：

关键词： LHCSR;NPQ;PSBS;Ulva linza;Xanthophyll cycle

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： To avoid photoinhibition, plants have developed diverse photoprotection mechanisms. One of the short-term high light protection mechanisms in plants is non-photochemical quenching (NPQ), which dissipates the absorbed light energy as thermal energy. In the green alga, Ulva linza, the kinetics of NPQ starts with an initial, quick rise followed by a decline, and then a second and higher rise at longer time periods. During the whole phase, NPQ is triggered and controlled by δpH, then strengthened and modulated by zeaxanthin. Light-harvesting complex (LHC) family members are known to play crucial roles in this mechanism. The PSBS protein, a member of the LHC family that was thought to be present exclusively in higher plants, has been identified for the first time in U.linza. The expression of both PSBS and LHCSR was up-regulated during high light conditions, and LHCSR increased more than PSBS. Both LHCSR and PSBS-dependent NPQ may be important strategies for adapting to the environment, and they have undoubtedly played a role in their evolution.

分类号： 58.843

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