Harmful Microcystis aeruginosa blooms occurred frequently in many eutrophic lakes and rivers with resultant serious global environmental consequences. Algicidal bacteria may play an important role in inhibiting the growth of Microcystis aeruginosa and are considered as an effective method for preventing the appearance of blooms. In order to counteract the harmful effects of Microcystis aeruginosa, a critical step is to identify, isolate and characterize indigenous algicidal bacteria. This study aimed to isolate a novel indigenous algicidal bacterium identified as Chryseobacterium species based upon its 16S rDNA sequence analysis, and determine whether this bacterium was effective in lysing Microcystis aeruginosa FACHB 905. The influence of environmental factors including temperature, pH, quantity of Chryseobacterium species as well as Microcystis aeruginosa concentration were examined with respect to algae-lysing properties of this bacterial strain. Data demonstrated that the highest algae-lysing activity of 80% against Microcystis aeruginosa FACHB 905 occurred within 72 hr. In addition, the algae-lysing activities of Chryseobacterium species cells were significantly higher than those of cell-free supernatant. In conclusion, data showed the algicidal bacterium Chryseobacterium species exhibited potent Microcystis aeruginosa-lysing activities and attacked Microcystis aeruginosa directly suggesting this algicidal bacterium may be potentially useful for reducing the number of harmful Microcystis aeruginosa blooms.

中文翻译：

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对铜绿微囊藻的新型本地藻类杀菌细菌金细菌种类的鉴定和表征。

在许多富营养化的湖泊和河流中，常见的有害铜绿微囊藻水华发生，造成严重的全球环境后果。杀藻细菌可能在抑制铜绿微囊藻的生长中起重要作用，被认为是防止水华出现的有效方法。为了抵消铜绿微囊藻的有害影响，关键的一步是鉴定，分离和表征本地的杀藻细菌。这项研究旨在根据其16S rDNA序列分析分离出一种新型的鉴定为金黄色葡萄球菌的本地藻类细菌，并确定该细菌是否能有效裂解铜绿微囊藻FACHB905。环境因素的影响包括温度，pH，就该细菌菌株的藻裂解特性而言，检查了金黄色细菌种类的数量以及铜绿微囊藻的浓度。数据表明，对铜绿微囊藻FACHB 905的最高藻类裂解活性为72小时。此外，金细菌属物种细胞的藻类裂解活性显着高于无细胞上清液。总而言之，数据显示，藻杆菌属细菌表现出强力的铜绿微囊藻裂解活性，并且攻击了铜绿微囊藻，这直接表明这种藻类细菌可能对减少有害的铜绿微囊藻绽放数量有用。数据表明，对铜绿微囊藻FACHB 905的最高藻类裂解活性为72小时。此外，金细菌属物种细胞的藻类裂解活性显着高于无细胞上清液。总而言之，数据显示，藻杆菌属细菌表现出强力的铜绿微囊藻裂解活性，并且攻击了铜绿微囊藻，这直接表明这种藻类细菌可能对减少有害的铜绿微囊藻绽放数量有用。数据表明，对铜绿微囊藻FACHB 905的最高藻类裂解活性为72小时。此外，金细菌属物种细胞的藻类裂解活性显着高于无细胞上清液。总而言之，数据显示，藻杆菌属细菌表现出强力的铜绿微囊藻裂解活性，并且攻击了铜绿微囊藻，这直接表明这种藻类细菌可能对减少有害的铜绿微囊藻绽放数量有用。