Strategies for adaptation to high light in plants  

作　　者：Man Zhang Yu Ming Hong-Bin Wang Hong-Lei Jin 

机构地区：[1]State Key Laboratory of Traditional Chinese Medicine/School of Pharmaceutical Sciences,Guangzhou University of Chinese Medicine,Guangzhou 510006,China [2]Institute of Medical Plant Physiology and Ecology,Guangzhou University of Chinese Medicine,Guangzhou 510006,China [3]Key Laboratory of Chinese Medicinal Resource From Lingnan(Guangzhou University of Chinese Medicine),Ministry of Education,Guangzhou 510006,China [4]Guangzhou Key Laboratory of Chinese Medicine Research on Prevention and Treatment of Osteoporosis,The Third Affiliated Hospital of Guangzhou University of Chinese Medicine,Guangzhou 510375,China

出　　处：《aBIOTECH》2024年第3期381-393,共13页生物技术通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant nos.32322007,U22A20446,31970261);the Talent Support Project of Guangdong(2019TQ05N182);the Basic and Applied Basic Project of Guangzhou(SL2022A04J00510).

摘　　要：Plants absorb light energy for photosynthesis via photosystem complexes in their chloroplasts.However,excess light can damage the photosystems and decrease photosynthetic output,thereby inhibiting plant growth and development.Plants have developed a series of light acclimation strategies that allow them to withstand high light.In the first line of defense against excess light,leaves and chloroplasts move away from the light and the plant accumulates compounds that filter and reflect the light.In the second line of defense,known as photoprotection,plants dissipate excess light energy through non-photochemical quenching,cyclic electron transport,photorespiration,and scavenging of excess reactive oxygen species.In the third line of defense,which occurs after photodamage,plants initiate a cycle of photosystem(mainly photosystem II)repair.In addition to being the site of photosynthesis,chloroplasts sense stress,especially light stress,and transduce the stress signal to the nucleus,where it modulates the expression of genes involved in the stress response.In this review,we discuss current progress in our understanding of the strategies and mechanisms employed by plants to withstand high light at the whole-plant,cellular,physiological,and molecular levels across the three lines of defense.

关 键 词：DEFENSE PHOTOPROTECTION PHOTOSYSTEM Repair of PSII 

分 类 号：Q945[生物学—植物学]