Biogenic production of DMSP and its degradation to DMS—their roles in the global sulfur cycle

查看全文 作　　者：Xiao-Hua [1,2]Zhang;Ji [1]Liu;Jingli [1]Liu;Guipeng [2,3]Yang;Chun-Xu [1]Xue;Andrew R. J. [4]Curson;Jonathan D. [4]Todd

机构地区：[1]MOE Key Laboratory of Marine Genetics and Breeding,College of Marine Life Sciences,Ocean University of China,Qingdao 266003,China;[2]Laboratory for Marine Ecology and Environmental Science,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China;[3]College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266071,China;[4]School of Biological Sciences,University of East Anglia,Norwich NR4 7TJ,UK

出　　处：《Science China(Life Sciences)》索引2019年第62卷第10期,共24页

基　　金：supported by the National Natural Science Foundation of China (91751202 and 41730530);the National Key Research and Development Program of China (2016YFA0601303 and 2018YFC0310701);the Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao) (2018SDKJ0406-4);Natural Environmental Research Council grants (NE/ N002385, NE/P012671 and NE/S001352) fund ARJC and JDT 摘　　要：Dimethyl sulfide(DMS) is the most abundant form of volatile sulfur in Earth’s oceans, and is mainly produced by the enzymatic clevage of dimethylsulfoniopropionate(DMSP). DMS and DMSP play important roles in driving the global sulfur cycle and may affect climate. DMSP is proposed to serve as an osmolyte, a grazing deterrent, a signaling molecule, an antioxidant, a cryoprotectant and/or as a sink for excess sulfur. It was long believed that only marine eukaryotes such as phytoplankton produce DMSP. However, we recently discovered that marine heterotrophic bacteria can also produce DMSP, making them a potentially important source of DMSP. At present, one prokaryotic and two eukaryotic DMSP synthesis enzymes have been identified.Marine heterotrophic bacteria are likely the major degraders of DMSP, using two known pathways: demethylation and cleavage.Many phytoplankton and some fungi can also cleave DMSP. So far seven different prokaryotic and one eukaryotic DMSP lyases have been identified. This review describes the global distribution pattern of DMSP and DMS, the known genes for biosynthesis and cleavage of DMSP, and the physiological and ecological functions of these important organosulfur molecules, which will improve understanding of the mechanisms of DMSP and DMS production and their roles in the environment. 关键词：marine MICROORGANISM DIMETHYLSULFONIOPROPIONATE (DMSP) dimethyl sulfide (DMS) DMSP biosynthesis DMSP CLEAVAGE

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Biogenic production of DMSP and its degradation to DMS—their roles in the global sulfur cycle

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