The regulation of the chloroplast proton motive force plays a key role for photosynthesis in fluctuating light

被引:126
作者
Armbruster, Ute [1 ]
Galvis, Viviana Correa [1 ]
Kunz, Hans-Henning [2 ]
Strand, Deserah D. [3 ]
机构
[1] Max Planck Inst Mol Plant Physiol, Regulat Photosynth Grp, Wissensch Pk Golm,Muhlenberg 1, D-14476 Potsdam, Germany
[2] Washington State Univ, Sch Biol Sci, Plant Physiol, POB 644236, Pullman, WA 99164 USA
[3] Max Planck Inst Mol Plant Physiol, Organelle Biol & Biotechnol Grp, Wissensch Pk Golm,Muhlenberg 1, D-14476 Potsdam, Germany
基金
美国国家科学基金会;
关键词
DEPENDENT CHLORIDE CHANNEL; CYCLIC ELECTRON-TRANSPORT; CYTOCHROME B(6)F COMPLEX; ATP SYNTHASE; PHOTOSYSTEM-I; HIGHER-PLANT; THYLAKOID MEMBRANES; ARABIDOPSIS; PHOTOPROTECTION; FLUORESCENCE;
D O I
10.1016/j.pbi.2017.03.012
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Plants use sunlight as their primary energy source. During photosynthesis, absorbed light energy generates reducing power by driving electron transfer reactions. These are coupled to the transfer of protons into the thylakoid lumen, generating a proton motive force (pmf) required for ATP synthesis. Sudden alterations in light availability have to be met by regulatory mechanisms to avoid the over-accumulation of reactive intermediates and maximize energy efficiency. Here, the acidification of the lumen, as an intermediate product of photosynthesis, plays an important role by regulating photosynthesis in response to excitation energy levels. Recent findings reveal pmf regulation and the modulation of its composition as key determinants for efficient photosynthesis, plant growth, and survival in fluctuating light environments.
引用
收藏
页码:56 / 62
页数:7
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