标題: Toxicity, Biodegradation, and Metabolic Fate of Organophosphorus Pesticide Trichlorfon on the Freshwater Algae Chlamydomonas reinhardtii

作者: Wan, L (Wan, Liang); Wu, YX (Wu, Yixiao); Ding, HJ (Ding, Huijun); Zhang, WH (Zhang, Weihao)

來源出版物: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 卷: 68期: 6 頁: 1645-1653 DOI: 10.1021/acs.jafc.9b05765 出版年: FEB 12 2020

摘要: This study investigated the toxicity of trichlorfon (TCF) to the freshwater algae Chlamydomonas reinhardtii, as well as its biodegradation and metabolic fate. The growth of C. reinhardtii decreased with increasing TCF concentration, and the maximum inhibition ratio was 51.3% at 200 mg L-1 TCF compared to the control. Analyses of pigment content, chlorophyll fluorescence, and antioxidant enzymes indicated that C. reinhardtii can produce resistance and acclimatize to the presence of TCF. The variations in pH during cultivation suggested that photosynthetic microalgae have innate advantages over bacteria and fungi in remediating TCF. A 100% biodegradation rate was achieved at a maximum concentration of 100 mg L-1 TCF. Ten metabolites were identified by GC-MS, and the degradation pathways of TCF by the algae were proposed. This research demonstrated that C. reinhardtii is highly tolerant to and can efficiently degrade TCF. Thus, C. reinhardtii can be used to remove traces of TCF from natural water environments and to treat TCF-contaminated wastewater.

入藏号: WOS:000514256200015

語言: English

文獻類型: Article

作者關鍵詞: microalgae; trichlorfon; toxicity; biodegradation; metabolic fate

地址：[Wan, Liang; Wu, Yixiao] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

[Ding, Huijun] Jiangxi Prov Inst Water Sci, Jiangxi Prov Key Lab Water Resources & Environm P, Nanchang 330029, Jiangxi, Peoples R China.

[Zhang, Weihao] Wuhan Univ, Sch Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

通訊作者: Zhang, WH(通訊作者)，Wuhan Univ, Sch Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

電子郵件地址: zhangwh@whu.edu.cn

影響因子： 4.192