In the process of photosynthetic primary light reaction,the photosystem(PS)Ⅰ and PS Ⅱ on the photosynthetic membrane convert the absorbed solar energy into chemical energy and releasing oxygen.The generated ATP and NADPH provide the energy for carbon dioxide fixation.The peripheral light-harvesting antennas around PSI and PSⅡ core in photosynthetic organisms are responsible for collecting light energy,transferring excitation energy,and mediating the efficient distribution and utilization on thylakoid membrane.The light-harvesting complexes(LHCs)exhibit a great diversity during the evolutionary process of eukaryotic oxygenic photosynthetic organisms,thus studying their structures and functions is of great significance for understanding the molecular mechanisms of the primary reaction and adaptations to the environment.This review summarizes the detailed structures and functions of LHC antennas during the evolution from green algae to higher plants,as well as from red algae to diatoms.We focus on the genes,proteins,structures,arrangements and functions of LHC antennas in oxygenic photosynthetic organisms,and elucidate the significance of the diversified LHC antennas in photosynthetic organisms for their adaptation to the changeable light environments.
关键词
光合作用/捕光天线/光系统Ⅰ/光系统Ⅱ/LHCII/FCP/LHC结构与功能/LHC天线排布
Key words
photosynthesis/light-harvesting antenna/PSI/PSII/LHCII/FCP/structure and function of LHC antennas/arrangement of LHC antennas
维普
万方数据