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Effects of the cultivable bacteria attached to Microcystis colonies on the colony size and growth of Microcystis
Journal of Freshwater Ecology ( IF 1.3 ) Pub Date : 2019-01-01 , DOI: 10.1080/02705060.2019.1665115 Qiang Wu 1 , Xiaohong Zhang 1 , Shujie Jia 1 , Jing Li 1 , Pengfu Li 1
Journal of Freshwater Ecology ( IF 1.3 ) Pub Date : 2019-01-01 , DOI: 10.1080/02705060.2019.1665115 Qiang Wu 1 , Xiaohong Zhang 1 , Shujie Jia 1 , Jing Li 1 , Pengfu Li 1
Affiliation
Abstract The interactions between bacteria and algae may play a significant part in the formation and development of algal blooms. The bloom-forming cyanobacterium Microcystis occurs mainly as colonial form in natural waters, and thus it is necessary to study the interaction between bacteria and colonial Microcystis. This paper aimed to investigate effects of the cultivable bacteria attached to Microcystis colonies on the colony size and growth of colonial Microcystis aeruginosa. Eleven bacterial strains were isolated from M. aeruginosa colonies collected from Lake Taihu. Among these bacteria, seven bacterial isolates significantly influenced the colony size of M. aeruginosa, and four bacterial isolates significantly influenced the growth rate of M. aeruginosa. Four isolates, related to the Exiguobacterium, Delftia, Bacillus and Stenotrophomonas, significantly decreased the colony size of M. aeruginosa by 36-51%, and two isolates, assigned to the Chryseobacterium and Pseudomonas chengduensis, significantly increased the M. aeruginosa colony size by 89% and 63%, respectively, while these isolates had no effect on the cyanobacterial growth rate. Two isolates, belonged to the Rheinheimera and Pseudomonas, significantly decreased the growth rate of M. aeruginosa by 47% and 36%, respectively, and one bacterial strain related to Aeromonas increased the cyanobacterial growth rate by 22%, while these isolates had no effect on the cyanobacterial colony size. One isolate belonged to Sphingomonas was found to significantly increase the colony size of M. aeruginosa by 80% and significantly decrease the growth rate of M. aeruginosa by 21%. PCR-denaturing gradient gel electrophoresis (PCR-DGGE) analysis showed that all of the bacterial isolates were able to colonize M. aeruginosa colonies. Our data suggested that the bacteria attached to Microcystis colonies might influence the cyanobacterial colony size and growth, and thus influence the formation and development of Microcystis blooms.
中文翻译:
微囊藻菌落附着可培养菌对微囊藻菌落大小及生长的影响
摘要 细菌和藻类之间的相互作用可能在藻华的形成和发展中起重要作用。形成水华的蓝藻微囊藻主要以群落形式存在于天然水域中,因此有必要研究细菌与群落微囊藻之间的相互作用。本文旨在研究附着在微囊藻菌落上的可培养细菌对铜绿微囊藻菌落大小和生长的影响。从太湖采集的铜绿假单胞菌菌落中分离得到11株菌株。在这些细菌中,7株细菌分离株显着影响了铜绿假单胞菌的菌落大小,4株细菌分离株显着影响了铜绿假单胞菌的生长速度。四种分离株,与 Exiguobacterium、Delftia、Bacillus 和 Stenotrophomonas 相关,显着减少了 M. aeruginosa 的菌落大小 36-51%,分配给 Chryseobacterium 和 Pseudomonas chengduensis 的两个分离株分别使 M. aeruginosa 菌落大小显着增加了 89% 和 63%,而这些分离株没有影响关于蓝藻生长速度。Rheinheimera 和 Pseudomonas 两种分离株分别显着降低了铜绿假单胞菌的生长速度 47% 和 36%,一种与气单胞菌相关的菌株使蓝藻生长速度增加了 22%,而这些分离株没有影响关于蓝藻菌落大小。发现一种属于鞘氨醇单胞菌的分离株使 M. aeruginosa 的菌落大小显着增加了 80%,并使 M. aeruginosa 的生长速度显着降低了 21%。PCR 变性梯度凝胶电泳 (PCR-DGGE) 分析表明,所有细菌分离株都能够定殖铜绿假单胞菌菌落。我们的数据表明,附着在微囊藻菌落上的细菌可能会影响蓝藻菌落的大小和生长,从而影响微囊藻水华的形成和发展。
更新日期:2019-01-01
中文翻译:
微囊藻菌落附着可培养菌对微囊藻菌落大小及生长的影响
摘要 细菌和藻类之间的相互作用可能在藻华的形成和发展中起重要作用。形成水华的蓝藻微囊藻主要以群落形式存在于天然水域中,因此有必要研究细菌与群落微囊藻之间的相互作用。本文旨在研究附着在微囊藻菌落上的可培养细菌对铜绿微囊藻菌落大小和生长的影响。从太湖采集的铜绿假单胞菌菌落中分离得到11株菌株。在这些细菌中,7株细菌分离株显着影响了铜绿假单胞菌的菌落大小,4株细菌分离株显着影响了铜绿假单胞菌的生长速度。四种分离株,与 Exiguobacterium、Delftia、Bacillus 和 Stenotrophomonas 相关,显着减少了 M. aeruginosa 的菌落大小 36-51%,分配给 Chryseobacterium 和 Pseudomonas chengduensis 的两个分离株分别使 M. aeruginosa 菌落大小显着增加了 89% 和 63%,而这些分离株没有影响关于蓝藻生长速度。Rheinheimera 和 Pseudomonas 两种分离株分别显着降低了铜绿假单胞菌的生长速度 47% 和 36%,一种与气单胞菌相关的菌株使蓝藻生长速度增加了 22%,而这些分离株没有影响关于蓝藻菌落大小。发现一种属于鞘氨醇单胞菌的分离株使 M. aeruginosa 的菌落大小显着增加了 80%,并使 M. aeruginosa 的生长速度显着降低了 21%。PCR 变性梯度凝胶电泳 (PCR-DGGE) 分析表明,所有细菌分离株都能够定殖铜绿假单胞菌菌落。我们的数据表明,附着在微囊藻菌落上的细菌可能会影响蓝藻菌落的大小和生长,从而影响微囊藻水华的形成和发展。