食品科学 ›› 2009, Vol. 30 ›› Issue (11): 180-184.doi: 10.7506/spkx1002-6630-200911040

• 生物工程 • 上一篇    下一篇

高产黑色素放线菌G - H D - 4 的分离及鉴定

郑晨娜,金春英,方柏山*   

  1. 泉州医学高等专科学校基础医学部
  • 收稿日期:2008-09-01 修回日期:2009-01-08 出版日期:2009-06-01 发布日期:2010-12-29
  • 通讯作者: 方柏山* E-mail:fangbs@hqu.edu.cn

Isolation and Identification of High-yield Melanin-producing Actinomycetes G-HD-4

ZHENG Chen-na,JING Chun-ying,FANG Bai-shan*   

  1. (Department of Basic Medical Science, Quanzhou Medical College, Quanzhou 362021, China)
  • Received:2008-09-01 Revised:2009-01-08 Online:2009-06-01 Published:2010-12-29
  • Contact: FANG Bai-shan* E-mail:fangbs@hqu.edu.cn

摘要:

从福建泉州华侨大学林园采集的土样中分离出一株高产胞外黑色素的放线菌(Actinomycetes)G-HD-4。将黑色素从该菌株发酵液中提取纯化后经红外光谱、紫外光谱以及扫描电镜的分析,与标准黑色素基本一致。通过形态特征、培养特征以及理化性质比较发现该放线菌属于链霉菌属,根据多项分类原则和系统进化树的构建分析,分离的菌G-HD-4 与卡胞链霉菌(Streptomyces capoamus)处于同一分支上,序列相似性达到99% 以上,因此将该菌株暂归入卡胞链霉菌。

关键词: 链霉菌, 黑色素, 16SrDNA序列, 系统发育分析

Abstract:

Actinomyceter strain G-HD-4 was isolated from soil sample collected from Huaqiao flower garden in Quanzhou of Fujian Province, which produced the most melanin compared to other isolated 18 strains. The melanin separated from the fermentation broth of strain G-HD-4 was characterized by ultraviolet-visible (UV-Vis) spectroscopy, infrared (IR) spectroscopy, and scanning electron microscope (SEM). The results revealed that the melanin derived from strain G-HD-4 was similar to standard melanin on the structural basis. Based on the studies of physiological and biochemical characteristics and 16S ribosomal RNA sequence homology, the G-HD-4 strain was confirmed to belong to Streptomyces genus and be similar to Streptomyces capoamus (gene sequence similarity 99%). Finally, it was identified as a species of Streptomyces capoamus by taxonomic and phylogentic analysis.

Key words: Streptomycs G-HD-4, melanin, 16S rDNA sequence, phylogenetic analysis

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