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Ecotoxicol Environ Saf

Title:		Effects of nitrogen nutrients on the volatile organic compound emissions from Microcystis aeruginosa
Author(s):		Zuo Z; Yang L; Chen S; Ye C; Han Y; Wang S; Ma Y;
Address:		"School of Forestry and Biotechnology, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China. Electronic address: zuozhaojiang@126.com. Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China. School of Forestry and Biotechnology, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China"
Journal Title:		Ecotoxicol Environ Saf
Year:		2018
Volume:		20180606
Issue:
Page Number:		214 - 220
DOI:		10.1016/j.ecoenv.2018.05.095
ISSN/ISBN:		1090-2414 (Electronic) 0147-6513 (Linking)
Abstract:		"Cyanobacteria release abundant volatile organic compounds (VOCs), which can poison other algae and cause water odor. To uncover the effects of nitrogen (N) nutrients on the formation of cyanobacteria VOCs, the cell growth, VOC emission and the expression of genes involving in VOC formation in Microcystis aeruginosa were investigated under different N conditions. With the supplement of NaNO(3), NaNO(2), NH(4)Cl, urea, Serine (Ser) and Arginine (Arg) as the sole N source, NaNO(3), urea and Arg showed the best effects on M. aeruginosa cell growth, and limited N supply inhibited the cell growth. M. aeruginosa released 26, 25, 23, 27, 23 and 25 compounds, respectively, in response to different N forms, including furans, sulfocompounds, terpenoids, benzenes, hydrocarbons, aldehydes, and esters. Low-N especially Non-N condition markedly promoted the VOC emission. Under Non-N condition, four up-regulated genes involving in VOC precursor formation were identified, including the genes of pyruvate kinase, malic enzyme and phosphotransacetylase for terpenoids, the gene of aspartate aminotransferase for benzenes and sulfocompounds. In eutrophic water, cyanobacteria release different VOC blends using various N forms, and the reduction of N amount caused by cyanobacteria massive growth can promote algal VOC emission by up-regulating the gene expression"
Keywords:		Microcystis/genetics/growth & development/*metabolism Nitrogen/*metabolism Nutrients Volatile Organic Compounds/*metabolism Cyanobacteria Gene expression Nitrogen Volatile organic compounds Water odor;
Notes:		"MedlineZuo, Zhaojiang Yang, Lin Chen, Silan Ye, Chaolin Han, Yujie Wang, Sutong Ma, Yuandan eng Netherlands 2018/06/10 Ecotoxicol Environ Saf. 2018 Oct; 161:214-220. doi: 10.1016/j.ecoenv.2018.05.095. Epub 2018 Jun 6"