大理大学学报 ›› 2022, Vol. 7 ›› Issue (6): 91-96.

• 学生园地 • 上一篇    下一篇

4株链霉菌的鉴定及抑菌活性研究

  

  1. 1.大理大学东喜玛拉雅研究院,云南大理 6710032.大理大学农学与生物科学学院,云南大理 671003;3.大理大学公共卫生学院,云南大理 671000

  • 收稿日期:2021-05-06 修回日期:2021-06-04 出版日期:2022-06-15 发布日期:2022-07-04
  • 通讯作者: 佘容,高级工程师,博士,E-mail:sher@eastern-himalaya.cn。
  • 作者简介:高玉婷,2018级生物科学专业本科生。

Identification and Antibacterial Activity Study of Four Streptomyces Strains

  1. 1. Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali, Yunnan 671003, China; 2. College of Agriculture and Biology Science, Dali University, Dali, Yunnan 671003, China;3. College of Public Health, Dali University, Dali, Yunnan 671000, China
  • Received:2021-05-06 Revised:2021-06-04 Online:2022-06-15 Published:2022-07-04
  • Supported by:

    国家自然科学基金项目(31360013);第二次青藏高原综合科学考察研究项目(2019QZKK0402

摘要:

目的:对分离自土壤的放线菌进行鉴定及抑菌活性研究。方法:采用划线法分离纯化4株受试链霉菌(StreptomycesDL002DL003DL004DL005),利用形态和分子生物学法进行鉴定,并用平板对峙法和滤纸片法测试其对细菌和真菌标准菌株的抑菌活性。结果:受试菌株均为黄灰链霉菌(Streptomyces flavogriseus),对枯草芽孢杆菌(Bacillus subtilis)、普通变形杆菌(Proteus vulgaris)、大肠埃希菌(Escherichia coli)、铜绿假单胞菌(Pseudomonas aeruginosa)、黑曲霉(Aspergillus niger)、立枯丝核菌(Rhizoctonia solani)等均有抑制作用,并可抑制黑曲霉产孢。其中DL002菌株对普通变形杆菌及枯草芽孢杆菌的抑制作用最强。结论:受试菌株对细菌和真菌均有抑制作用,菌株DL002表现出最强的抑菌活性及抑制黑曲霉产孢的能力,可进一步研究。

关键词: 黄灰链霉菌, 抑菌活性, 黑曲霉, 普通变形杆菌, 枯草芽孢杆菌

Abstract:

Objective To identify the actinomycete strains separated from soil and study their antibacterial activity. Methods Streak method was used to separate and purify four strains of StreptomycesDL002 DL003 DL004 DL005), and morphological and molecular biological methods were used to identify these strains. After that plate confrontations and filtering paper methods were used to study the antibacterial activity of them against standard strains of bacteria and fungi. Results The tested strains were Streptomyces flavogriseus. The growth of Bacillus subtilis Proteus vulgarisEscherichia coli Pseudomonas aeruginosa Aspergillus niger Rhizoctonia solani and the spore production of A. niger can be inhibited by any of the four strains. Among the four stains strain DL002 had the strongest inhibition effecton P. vulgaris and B. subtilis. Conclusion The tested strains all have inhibition effect on bacteria and fungi, especially, strain DL002 showed the strongest antibacterial activity and the ability to inhibit A.niger spore production, which could be further studied.

Key words:

Streptomyces flavogriseus, antibacterial activity, Aspergillus niger, Proteus vulgaris, Bacillus subtilis

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