MIT/WHOI Joint Program in Oceanography/Applied Ocean Science and Engineering, Woods Hole, MA, USA.
FEMS Microbiol Ecol. 2010 Aug;73(2):254-70. doi: 10.1111/j.1574-6941.2010.00897.x. Epub 2010 May 4.
Three newly isolated strains of flavobacteria from coastal aquifer sediments have been found to be predatory, lysing a range of live and pasteurized microbial prey. The three strains have been classified on the basis of 16S rRNA gene phylogeny as belonging to the recently described Olleya (strains VCSA23 and VCSM12) and Tenacibaculum (strain VCSA14A) genera. Two of the closest cultured relatives to the strain VCSA14A, Tenacibaculum discolor and Tenacibaculum gallaicum, were also found to be bacteriolytic. These five predatory strains exhibit gliding motility and have been observed to lyse prey cells after surrounding them with social swarms, similar to known predatory bacteria such as myxobacteria and members of the genus Lysobacter. Flavobacteria are often numerically significant in a wide variety of freshwater and marine environments, particularly in association with particles, and are thought to be involved in the degradation of biopolymeric substances. If predatory capability is widespread among flavobacteria, they may be a previously unrecognized source of 'top-down' bacterial mortality with an influence on the composition and activity of surrounding microbial communities.
从沿海含水层沉积物中分离出的 3 株新的黄杆菌菌株具有捕食性，可裂解一系列活的和巴氏杀菌的微生物猎物。这 3 株菌株基于 16S rRNA 基因系统发育被分类为最近描述的奥利亚（菌株 VCSA23 和 VCSM12）和 Tenacibaculum（菌株 VCSA14A）属。与菌株 VCSA14A 最接近的两种培养相关菌，变色杆菌和嗜粘蛋白阿克曼氏菌，也被发现具有溶菌性。这 5 株捕食性菌株表现出滑动运动性，并观察到它们在包围猎物细胞后用社交群集溶解猎物细胞，类似于已知的捕食性细菌，如粘细菌和 Lysobacter 属的成员。黄杆菌在各种淡水和海洋环境中数量众多，特别是与颗粒有关，被认为参与了生物聚合物物质的降解。如果捕食能力在黄杆菌中广泛存在，它们可能是一种以前未被认识到的“自上而下”细菌死亡率的来源，对周围微生物群落的组成和活性有影响。
