海洋中DMSP的研究进展  

Recent Progress in the Study of Oceanic Dimethylsulfoniopropionate

作　　者：杨桂朋[1] 景伟文[1] 陆小兰[1] 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266003

出　　处：《中国海洋大学学报（自然科学版）》2004年第5期854-860,共7页Periodical of Ocean University of China

基　　金：国家自然科学基金重大项目 (40 4 90 2 65)资助

摘　　要：DMSP(dimethylsulfoniopropionate ,β 二甲基巯基丙酸内盐 )作为DMS(dimethylsulfide ,二甲基硫 )的前体 ,是 1种重要的生源硫化物。根据其在海洋生态系统和生物地球化学循环中所起着的重要作用 ,作者综述了国内外海洋科学工作者十几年来在DMSP研究方面的进展。DMSP(dimethylsulfoniopropionate) is recognized as the major precursor of marine DMS. DMSP plays very important roles in marine microbial ecology and biogeochemistry. DMSP may serve as an intracellular osmolyte and cryoprotectant under low temperatures. DMSP appears to be a major source of sulfur and carbon for marine bacterioplankton. There are many factors affecting the distribution of DMSP in seawater. In this review, a brief discussion is given about three pathways of DMSP biosynthesis. When DMSP degrades, two different products are obtained: DMS and methanethiol. A new hypothesis is presented in which DMSP production is described as an “overflow” mechanism for excess reduced compounds and for energy excess. As an important compound in marine biogeochemistry and ecology and evolution, DMSP should deserve more and more attention.

关 键 词：β-二甲基巯基丙酸内盐 二甲基硫 海洋生物地球化学 海洋生态系统 

分 类 号：P734[天文地球—海洋化学]