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J Integr Plant Biol, 2001, 43 (9): 988-990, Research Article
Singlet Oxygen Generated in PS¢ò Particles Promotes the Superoxide Generation
LIU Ke, SUN Jian, XU Ying-Kai, CHEN Zhong-Wei, ZHANG Qi-Yuan, ZHANG Xing-Kang, KUANG Ting-Yun and LIU Yang
doi:
Abstract

The relationship between superoxide and singlet oxygen in PSⅡ particle of spinach under strong illumination was studied with spin-trap ESR technique. The generation of superoxide was increased under D2 environment which prolonged the half life of singlet oxygen. The generation of superoxide was decreased when histidine existed as a scavenger of singlet oxygen. It is highly possible that the superoxide generated in PSⅡ particle originates from singlet oxygen.

光系统II颗粒内单线态氧诱导产生超氧阴离子自由基
刘科1孙健1,2徐英凯1  陈中伟1 张启元1 张兴康1 匡廷云2  刘扬1*

(1. 中国科学院化学研究所,北京100080;2.  中国科学院植物研究所,北京100093)
关键词: 超氧阴离子自由基;单线态氧;PSII;活性氧;自旋捕捉-电子自旋共振技术

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