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Herbicidal effects of harmaline from Peganum harmala on photosynthesis of Chlorella pyrenoidosa: Probed by chlorophyll fluorescence and thermoluminescence
Chunnuan Deng;  Hua Shao;  Xiangliang Pan;  Shuzhi Wang;  Daoyong Zhang
2014
发表期刊Pesticide Biochemistry & Physiology
卷号115页码:23-31
摘要

The herbicidal effects of harmaline extracted from Peganum harmala seed on cell growth and photosynthesis of green algae Chlorella pyrenoidosa were investigated using chlorophyll a fluorescence and thermoluminescence techniques. Exposure to harmaline inhibited cell growth, pigments contents and oxygen evolution of C. pyrenoidosa. Oxygen evolution was more sensitive to harmaline toxicity than cell growth or the whole photosystem II (PSII) activity, maybe it was the first target site of harmaline. The JIPtest parameters showed that harmaline inhibited the donor side of PSII. Harmaline decreased photochemical efficiency and electron transport flow of PSII but increased the energy dissipation. The charge recombination was also affected by harmaline. Amplitude of the fast phase decreased and the slow phase increased at the highest level of harmaline. Electron transfer from QA to QB was inhibited and backward electron transport flow from QA to oxygen evolution complex was enhanced at 10 lg mL1 harmaline. Exposure to 10 lg mL1 harmaline caused appearance of C band in thermoluminescence. Exposure to 5 lg mL1 harmaline inhibited the formation of proton gradient. The highest concentration of harmaline treatment inhibited S3QB charge recombination but promoted formation of QA YD + charge pairs. P. harmala harmaline may be a promising herbicide because of its inhibition of cell growth, pigments synthesis, oxygen evolution and PSII activities. 

关键词Phytotoxin charge Recombination photosystem Ii qa Reoxidation proton Gradient thermoluminescence
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/9282
专题环境地球化学国家重点实验室
作者单位1.Laboratory of Environmental Pollution and Bioremediation, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
2.College of Tourism and Geography, Yunnan Normal University, Kunming 650500, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
推荐引用方式
GB/T 7714
Chunnuan Deng;Hua Shao;Xiangliang Pan;Shuzhi Wang;Daoyong Zhang. Herbicidal effects of harmaline from Peganum harmala on photosynthesis of Chlorella pyrenoidosa: Probed by chlorophyll fluorescence and thermoluminescence[J]. Pesticide Biochemistry & Physiology,2014,115:23-31.
APA Chunnuan Deng;Hua Shao;Xiangliang Pan;Shuzhi Wang;Daoyong Zhang.(2014).Herbicidal effects of harmaline from Peganum harmala on photosynthesis of Chlorella pyrenoidosa: Probed by chlorophyll fluorescence and thermoluminescence.Pesticide Biochemistry & Physiology,115,23-31.
MLA Chunnuan Deng;Hua Shao;Xiangliang Pan;Shuzhi Wang;Daoyong Zhang."Herbicidal effects of harmaline from Peganum harmala on photosynthesis of Chlorella pyrenoidosa: Probed by chlorophyll fluorescence and thermoluminescence".Pesticide Biochemistry & Physiology 115(2014):23-31.
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