Tanned or Sunburned:How Excessive Light Triggers Plant Cell Death  

作　　者：Stefano D'Alessandro Ines Beaugelin Michel Havaux 

机构地区：[1]Aix-Marseille University,CEA,CNRS,UMR7265,BIAM,Institute of Biosciences and Biotechnologies of Aix Marseille,13108 Saint-Paul-lez-Durance,France [2]Singapore-CEA Alliance for Research in Circular Economy(SCARCE),School of Chemical and Biomedical Engineering,62 Nanyang Drive,Singapore 637459,Republic of Singapore

出　　处：《Molecular Plant》2020年第11期1545-1555,共11页分子植物（英文版）

基　　金：the French National Research Agency(ANR project SLOSAM,14-CE02-0010-02).

摘　　要：Plants often encounter light intensities exceeding the capacity of photosynthesis(excessive light)mainly due to biotic and abiotic factors,which lower C02 fixation and reduce light energy sinks.Under excessive light,the photosynthetic electron transport chain generates damaging molecules,hence leading to photooxidative stress and eventually to cell death.In this review,we summarize the mechanisms linking the excessive absorption of light energy in chloroplasts to programmed cell death in plant leaves.We highlight the importance of reactive carbonyl species generated by lipid photooxidation,their detoxification,and the integrating role of the endoplasmic reticulum in the adoption of phototolerance or cell-death pathways.Finally,we invite the scientific community to standardize the conditions of excessive light treatments.

关 键 词：Arabidopsis photosynthesis excessive light photooxidative stress CAROTENOID plant cell death stress response 

分 类 号：Q94[生物学—植物学]