Acrylate protects a marine bacterium from grazing by a ciliate predator
Acrylate protects a marine bacterium from grazing by a ciliate predator
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丙烯酸盐保护海洋细菌免遭纤毛虫捕食者的捕食
DOI：
10.1038/s41564-021-00981-1
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发表时间：
2021
影响因子：
28.3
通讯作者：
Yu-Zhong Zhang
中科院分区：
文献类型：
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作者：
Zhao-Jie Teng;Peng Wang;Xiu-Lan Chen;Richard Guillonneau;Chun-Yang Li;Song-Bao Zou;Jun Gong;Kai-Wen Xu;Lin Han;Chao Wang;David J. Scanlan;Yin Chen;Yu-Zhong Zhang
二甲基磺基丙酸酯（DMSP）的裂解可以阻止产DMSP的真核藻类中的食草动物，然而，目前还不清楚是否有一个平行的防御机制在海洋细菌中运作。在这里，我们证明了海洋细菌Puniceibacterium anaerecticumSM 1211，它不使用DMSP作为碳源，有一个膜相关的DMSP裂解酶，DddL。在高浓度的DMSP下，DddL通过降解DMSP引起细胞周围丙烯酸酯的积累，从而保护细胞免受海洋纤毛虫Uronema marinum的捕食。丙烯酸酯的存在可以改变铀的趋牧性。marinumto其他细菌在社区，从而影响社区结构。
Cleavage of dimethylsulfoniopropionate (DMSP) can deter herbivores in DMSP-producing eukaryotic algae; however, it is unclear whether a parallel defence mechanism operates in marine bacteria. Here we demonstrate that the marine bacteriumPuniceibacterium antarcticumSM1211, which does not use DMSP as a carbon source, has a membrane-associated DMSP lyase, DddL. At high concentrations of DMSP, DddL causes an accumulation of acrylate around cells through the degradation of DMSP, which protects against predation by the marine ciliateUronema marinum. The presence of acrylate can alter the grazing preference ofU. marinumto other bacteria in the community, thereby influencing community structure.