College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China.
College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China.
Mar Genomics. 2023 Aug;70:101043. doi: 10.1016/j.margen.2023.101043. Epub 2023 Apr 30.
Dimethylsulfoniopropionate (DMSP) is a ubiquitous organosulfur molecule in marine environments with important roles in global sulfur and nutrient cycling, which is mainly produced by marine phytoplankton and macroalgae. Marinomonas algicola SM1966, a Gram-negative, aerobic and rod-shaped bacterium, was isolated from the surface of Ulva pertusa (Chlorophyta) algal sample collected off the coastal areas of Rongcheng, China. Here, we report the complete genome sequence of strain SM1966 and its genomic characteristics to utilize DMSP, which may be produced by Ulva pertusa. The genome of strain SM1966 contains one circular chromosome (4.3 Mbp) and one circular plasmid (149,271 bp). Genomic analysis showed that strain SM1966 possesses a set of genes involved in DMSP transport, DMSP cleavage and the catabolism of acrylate, one product of DMSP cleavage. The results indicated that strain SM1966 has the capacity to utilize DMSP and produce dimethyl sulfide (DMS), a volatile infochemical with important roles in global sulfur cycling. This study provides genetic insights into DMSP catabolism by algae-associated bacteria.
二甲亚砜丙酯 (DMSP) 是海洋环境中普遍存在的有机硫分子，在全球硫和养分循环中具有重要作用，主要由海洋浮游植物和大型藻类产生。从中国荣成沿海地区采集的石莼（绿藻）藻样表面分离到一株革兰氏阴性、需氧、杆状细菌 Marinomonas algicola SM1966。本研究报告了该菌株 SM1966 的全基因组序列及其利用 DMSP 的基因组特征，DMSP 可能由石莼产生。菌株 SM1966 的基因组包含一个环状染色体（4.3 Mbp）和一个环状质粒（149,271 bp）。基因组分析表明，菌株 SM1966 拥有一套参与 DMSP 转运、DMSP 裂解和丙烯酸盐（DMSP 裂解的产物之一）代谢的基因。结果表明，菌株 SM1966 具有利用 DMSP 并产生二甲硫醚（DMS）的能力，DMS 是一种挥发性信息素，在全球硫循环中具有重要作用。本研究为藻类相关细菌的 DMSP 代谢提供了遗传见解。
