有机磷农药草甘膦异丙胺盐对赤潮异弯藻的毒物干扰效应

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Abstract

The growth,chlorophyll a contents,protein contents of Heterosigma akashiwo under different concentrations of glyphosate-isopropylammonium(0,0.001,0.01,0.1,1 and 10 mg·L^-1)were investigated.The results showed that glyphosate-isopropylammonium caused significantly toxic effect on microalgae.The cell density,chlorophyll a contents and protein contents were decreased significantly under 10 mg·L^-1 concentration(p<0.05).Low dose of glyphosate-isopropylammonium had significantly stimulated effect on microalgae.The growth and chlorophyll a contents of H.akashiwo were significantly increased as compared to the control group under low concentrations(<1 mg·L^-1)at 72 h(p<0.05).At latter period of the experiment(7^th,9^th,11^th day),the stimulated effect gradually disappeared,with no significant difference in physiological characteristics between treatments and the control group.

Key words： Heterosigma akashiwo glyphosate-isopropylammonium hormesis

Received: 25 August 2012

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	Articles by authors
	ZHOU Jing-yun
	ZHANG Lei
	AN Min
	DUAN Shun-shan

Cite this article:

ZHOU Jing-yun,ZHANG Lei,AN Min, et al. Hormesis effect of organophosphorus pesticide glyphosate-isopropylammonium on Heterosigma akashiwo[J]. , 2012, 31(4): 396-400.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2012/V31/I4/396

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