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文章编号: 1672-6987(2024)05-0092-09; DOI: 10.16351/j.1672-6987.2024.05.012
赵梦娟1, 董文迅1, 刘文全2, 梁生康3, 李俊峰1*(1. 青岛科技大学 生物工程学院, 山东 青岛 266042; 2.自然资源部 第一海洋研究所, 山东 青岛 266061;
3.中国海洋大学 海洋化学理论与工程技术教育部重点实验室, 山东 青岛 266100)
摘要: 分析昌邑湿地环境可培养细菌物种多样性及其产酶潜力。采用10倍梯度稀释涂布平板的培养方法,从昌邑湿地土壤中分离可培养细菌,通过16S rRNA基因序列分析昌邑地区可培养细菌的多样性;同时对菌株进行了生物学活性及耐盐性测定。根据16S rRNA基因序列的系统进化分析,将分离得到的93株细菌分别归类到3个门的7个属,其中芽孢杆菌属(Bacillus)为该湿地土壤可培养细菌的优势菌群,占所有菌株的50%。细菌酶活检测结果表明:60株细菌具有纤维素酶活性,51株细菌具有蛋白酶活性,50株细菌具有淀粉酶活性,其中34株细菌同时具有3种酶活性。研究表明昌邑湿地土壤微生物具有丰富的多样性,并获得了产酶活性良好的耐盐菌株资源,为研究滨海湿地在环境治理及净化能力方面提供基础参考。
关键词: 滨海湿地; 可培养细菌; 多样性
中图分类号: Q 939文献标志码: A
引用格式: 赵梦娟, 董文迅, 刘文全, 等. 昌邑湿地可培养细菌多样性分析及产酶菌株筛选[J]. 青岛科技大学学报(自然科学版), 2024, 45(5): 92-100.
ZHAO Mengjuan, DONG Wenxun, LIU Wenquan, et al. Diversity analysis and enzyme activity identification of culturable bacteria in soils of Changyi Wetland[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2024, 45(5): 92-100.
Diversity Analysis and Enzyme Activity Identification of Culturable
Bacteria in Soils of Changyi Wetland
ZHAO Mengjuan1, DONG Wenxun1, LIU Wenquan2, LIANG Shengkang3, LI Junfeng1
(1. College of Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;
2. First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;
3. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China)
Abstract: In order to analyze the biodiversity and enzyme activity of cultivable bacteria in soils of Changyi National Marine Ecological Special Reserve. 93 strains were isolated by 10-fold serial dilution method, and identified by 16S rRNA genes. Enzyme activities (including amylase, protease and cellulase) and NaCl tolerance were detected. Phylogenetic analysis based on 16S rRNA showed that the 93 bacteria belonged to 3 classes and 7 genera. The predominant genera were Bacillus, comprising 50% of all bacteria. The results of enzyme activity test shows that the number of strains with cellulase activity, protease activity and amylase activity are 60, 51 and 50, respectively. What is more,34 strains of them had 3 enzyme activities. This study showed that the biodiversity of cultivable bacteria in soil of Changyi wetland, and some salt-tolerant strains with enzyme activities were obtained. Those provided a basis reference for the study of environmental governance and purification capacity in coastal wetland.
Key words: coastal wetland; culturable bacteria; diversity
收稿日期: 2023-11-27
基金项目: 国家重点研发计划课题项目(2018YFC1407602);国家自然科学基金项目(U1806212);山东省重点研发计划重大科技创新工程项目(2019JZZY020705);广西北部湾海洋资源环境与可持续发展重点实验室、自然资源部第四海洋研究所、中国北海基金项目(MESE-2019-05).
作者简介: 赵梦娟(1998—),女,硕士研究生.*通信联系人.