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Sci Total Environ

Title:		Phosphorus accelerate the sulfur cycle by promoting the release of malodorous volatile organic sulfur compounds from Microcystis in freshwater lakes
Author(s):		Deng X; Ruan L; Ren R; Tao M; Zhang J; Wang L; Yan Y; Wen X; Yang X; Xie P;
Address:		"Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 10049, China. Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China. School of Life Sciences, Neijiang Normal University, Neijiang 641112, China. Yangtze River Basin Ecological Environment Monitoring and Scientific Research Center, Yangtze River Basin Ecological Environment Supervision and Administration Bureau, Ministry of Ecology and Environment of the People's Republic of China, Wuhan 430010, China. State Key Laboratory of Plateau Ecology and Agriculture, College of Eco-Environmental Engineering, Qinghai University, Xining 810016, China. Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650091, China; University of Chinese Academy of Sciences, Beijing 10049, China. Electronic address: xieping@ihb.ac.cn"
Journal Title:		Sci Total Environ
Year:		2022
Volume:		20220711
Issue:
Page Number:		157280 -
DOI:		10.1016/j.scitotenv.2022.157280
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Volatile organic sulfur compounds (VSCs) released by algae are of great significance in sulfur cycle, climate regulation and biological information transmission, and they also caused taste and odor in freshwaters. However, the categories, sources, and environmental regulatory factors of VSCs in freshwaters were less known. Here, we show that eight common freshwater cyanobacterium Microcystis, which bloom in freshwaters over the world, are found to be important producers of VSCs. Dimethyl sulfide (DMS), dimethyl disulfide (DMDS) and isopropyl methyl sulfide (IPMS) are the main VSCs with the highest concentrations 184.81 nmol/L, 162.01 nmol/L and 101.55 nmol/L, respectively. The amount of VSCs released from those Microcystis varied greatly, M. elabens, M. panniformis and M. flos-aquae released the largest amount of VSCs (1260.52 nmol S/L, 1154.75 nmol S/L and 670.58 nmol S/L), and M. wesenbergii had the smallest release amount. We also found for the first time that phosphorus (P) was one of the important factors for the regulation VSCs from most Microcystis. P can elevate the release of DMS by promoting the biomass and DMS yields of most Microcystis in the range 0.05 mg/L to 0.5 mg/L. Similar results were also found in 16 lakes at three different spatiotemporal scales. Overall, we revealed that the common freshwater Microcystis were able to release diverse thioethers, and the major VSCs were significantly influenced by water P concentrations. In the context of global freshwater eutrophication and Microcystis bloom, freshwater cyanobacteria driven sulfur cycle and water odor will probably be further strengthened"
Keywords:		*Cyanobacteria Eutrophication Lakes *Microcystis Phosphorus Sulfur Sulfur Compounds *Volatile Organic Compounds Water Cyanobacteria Freshwater lake Sulfur cycle Taste and odor;
Notes:		"MedlineDeng, Xuwei Ruan, Linwei Ren, Ren Tao, Min Zhang, Jing Wang, Lantian Yan, Yunzhi Wen, Xinli Yang, Xi Xie, Ping eng Netherlands 2022/07/15 Sci Total Environ. 2022 Nov 1; 845:157280. doi: 10.1016/j.scitotenv.2022.157280. Epub 2022 Jul 11"