Unicellular Microcystis aeruginosa cannot revert back to colonial form after short-term exposure to natural conditions
Unicellular Microcystis aeruginosa cannot revert back to colonial form after short-term exposure to natural conditions
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DOI：
10.1016/j.bse.2013.08.027
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发表时间：
2013-12-01
影响因子：
1.6
通讯作者：
Yang, Zhou
中科院分区：
文献类型：
--
作者：
Geng, Linlin;Qin, Baoli;Yang, Zhou
在实验室条件下，群体性铜绿微囊藻分离株经过几代后往往会失去其典型的群体形态，一个有趣但重要的问题是单细胞铜绿微囊藻是否具有典型的群体形态。最初从田间分离的铜绿假单胞菌在天然沃茨中生长时可以回复到菌落形态。基于这一想法，我们采用透析袋和塑料瓶进行了原位实验。每个透析袋和塑料瓶均填充有单细胞M。将高浓度的铜绿假单胞菌（aeruginosa）分别浸没到两个天然湖泊（采月湖和太湖）中40天和28天。结果表明，M.铜绿假单胞菌在透析袋中生长良好，而在塑料瓶中生长不好;在M.在两个湖中暴露的透析袋或塑料瓶中孵育铜绿假单胞菌。这表明实验室维持的单细胞M。铜绿假单胞菌在自然条件下短期暴露后不能恢复到菌落形式。(C)2013爱思唯尔有限公司保留所有权利。
Colonial Microcystis aeruginosa isolates tend to lose their typical colonial morph after some generations under laboratory conditions, one interesting but yet important question is whether unicellular M. aeruginosa, originally isolated from the field, can revert back to colonial morphology when growing back in natural waters. Based on this idea, we employed dialysis bags and plastic bottles to conduct an in situ experiment. Each of the dialysis bags and plastic bottles was filled with unicellular M. aeruginosa with high concentrations and then submerged to two natural lakes (lake Caiyue and Lake Taihu) for 40 and 28 days, respectively. Results showed M. aeruginosa grew well in dialysis bags but not in plastic bottles; no colonies were observed in M. aeruginosa incubated in either dialysis bags or plastic bottles exposed in both lakes. This suggests laboratory maintained unicellular M. aeruginosa cannot revert back to colonial form after short-term exposure in natural conditions. (C) 2013 Elsevier Ltd. All rights reserved.