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引用本文:张嗣萍,贾楠楠,王红兵,张晓辉,罗锋,李仁辉.一株新型鱼腥藻溶藻细菌的分离鉴定及其溶藻特性.湖泊科学,2018,30(5):1343-1350. DOI:10.18307/2018.0516
ZHANG Siping,JIA Nannan,WANG Hongbing,ZHANG Xiaohui,LUO Feng,LI Renhui.Isolation and algicidal characteristics of one novel algicidal bacterium on Anabaena eucompacta. J. Lake Sci.2018,30(5):1343-1350. DOI:10.18307/2018.0516
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一株新型鱼腥藻溶藻细菌的分离鉴定及其溶藻特性
张嗣萍1, 贾楠楠2, 王红兵3, 张晓辉1, 罗锋1, 李仁辉2
1.西南大学资源环境学院生物能源与生物修复研究中心, 重庆 400715;2.中国科学院水生生物研究所藻类生物学重点实验室, 武汉 430072;3.武汉市鄂正农科技发展有限公司, 武汉 430071
摘要:
蓝藻水华在全球范围频繁暴发,鱼腥藻(Anabaena)水华出现频度仅次于微囊藻(Microcystis)水华,其中的一些鱼腥藻种类能产生多样的藻毒素或异味物质,鱼腥藻水华去除技术的研发备受关注.本研究以从武汉市新洲区土壤中分离筛选到的一株细菌WP为材料,通过分析其生理生化特征及16S rDNA序列对其进行分类地位鉴定,考察了该菌株对真紧密鱼腥藻(Anabaena eucompacta)CHAB 1799的溶藻特性.结果表明,菌株WP与Lysinibacillus fusiformis NRS-350的同源性达到了99.6%,故鉴定WP属于Lysinibacillus属.菌株WP对真紧密鱼腥藻CHAB 1799发生溶藻作用的细菌阈值为6×103 cfu/ml,其生理状态不会明显影响溶藻效果,且对不同生长时期的藻液均有较强的溶藻作用.该菌株的溶藻方式为间接溶藻.本研究结果丰富了溶藻细菌的资源库,也为治理鱼腥藻水华提供了更多的技术支持.
关键词:  溶藻细菌  鱼腥藻  Lysinibacillus  溶藻特性  水华
DOI:10.18307/2018.0516
分类号:
基金项目:国家水体污染控制与治理科技重大专项(2017ZX07203-003)和重庆市研究生科研创新项目(CYS16072)联合资助.
Isolation and algicidal characteristics of one novel algicidal bacterium on Anabaena eucompacta
ZHANG Siping1, JIA Nannan2, WANG Hongbing3, ZHANG Xiaohui1, LUO Feng1, LI Renhui2
1.Research Center of Bioenergy and Bioremediation, College of Resources and Environment, Southwest University, Chongqing 400715, P. R. China;2.Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China;3.Wuhan Ezhengnong Science and Technology Limited Company, Wuhan 430071, P. R. China
Abstract:
Occurrence of cyanobacterial blooms is becoming a global environmental issue. Next to Microcystis bloom, Anabaena bloom is also the main bloom type with more diversity in production of cyanotoxins and odour substances, and removal of Anabaena blooms is also much concerned. One strain encoded as WP with strong algicidal activity against Anabaena eucompacta CHAB 1799 was isolated from a soil environment in Wuhan city. The 16S rRNA gene sequence of the WP strain showed 99.6% similarity with that of Lysinibacillus fusiformis NRS-350. Based on morphological, physiological and molecular phylogenetic features, algicidal bacterium WP was identified as Lysinibacillus sp. Its algicidal characteristics on A. eucompacta was also tested. Lysinibacillus sp. WP lysed A. eucompacta CHAB 1799 at low cell density (6×103 cfu/ml), and lysis effects of the Lysinibacillus sp. WP on A. eucompacta were related to growth stages of A. eucompacta CHAB 1799 rather than the growth stages of the strain WP. The strain WP lysed algae by secreting metabolites. Such results in the present study increase the resource bank of algicidal bacteria, providing more potential to treat the new type blooms such as A. eucompacta dominated bloom in China.
Key words:  Algicidal bacteria  Anabaena  Lysinibacillus  algicidal characteristics  bloom
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