邻苯二甲酸二丁酯对绿色巴夫藻的生长毒性和干扰效应

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Abstract

Toxicity and interference effects of dibutyl phthalate (DBP) on the growth of Pavlova viridis were studied. The exposure concentrations of DBP were 0, 2.5, 3.0, 3.5, 4.0, 5.0, 7.5 mg·L^-1. The cell density, photosynthetic pigment content, chlorophyll fluorescence characteristics and malondialdehyde (MDA) content were examined. The results showed that DBP inhibited the growth of P. viridis, and the cells were completely killed at the high concentrations (5 and 7.5 mg·L^-1). The contents of chlorophyll a and carotenoids significantly decreased with the increase of DBP concentrations. Photochemical efficiency of PSII (F_v/F_m), potential activity of PSII (F_v/F_o), actual photochemical efficiency of PSII in the light (Yield) and the electron transport rate (ETR) significantly decreased with increasing concentrations of DBP, while the content of MDA increased. The results confirm that the DBP has toxic effects on the population of the microalgae.

Key words： dibutyl phthalate Pavlova viridis toxic effect photosynthetic pigment chlorophyll fluorescence characteristics

Received: 25 August 2013

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	Articles by authors
	XIAO Ai-feng
	YANG Hui-li
	AN Min
	DUAN Shun-shan

Cite this article:

XIAO Ai-feng,YANG Hui-li,AN Min, et al. Toxicity and interference effects of dibutyl phthalate on Pavlova viridis[J]. , 2013, 32(4): 429-433.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2013/V32/I4/429

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