›› 2018, Vol. 3 ›› Issue (6): 79-83.

• 生命科学 • 上一篇    下一篇

不同演替阶段核桃根际放线菌群落生态特征

  

  1. (1.大理大学公共卫生学院,云南大理671000;2.大理大学东喜玛拉雅研究院,云南大理671003;
    3.大理大学农学与生物科学学院,云南大理671003)
  • 收稿日期:2018-03-01 出版日期:2018-06-15 发布日期:2018-06-15
  • 作者简介:王传琪,硕士研究生,主要从事流行病与卫生统计学研究.
  • 基金资助:

    国家自然科学基金资助项目(31360013);云南省中国三江并流区域生物多样性协同创新中心项目(云教科〔2015〕
    25号)

Ecological Characteristics of Actinomycetes Community in Walnut Rhizosphere at
Different Succession Stages

  1. (1. College of Public Health, Dali University, Dali, Yunnan 671000, China; 2. Institue of Eastern-Himalaya Biodiversity Research,
    Dali University, Dali, Yunnan 671003, China; 3. College of Agriculture and Biology Science, Dali University, Dali, Yunnan 671003,
    China)
  • Received:2018-03-01 Online:2018-06-15 Published:2018-06-15

摘要:

为了探讨树龄对核桃根际放线菌群落结构特征和生态功能特征的影响,采用时空置换法,对云南漾濞不同树龄核桃根
际放线菌的群落结构及其对金黄色葡萄球菌(Staphylococcus aureus)、大肠杆菌(Escherichia coli)、青霉菌(Penicillium)的抑菌活
性进行了比较研究。结果显示:随着树龄的增加,核桃根际放线菌的检出率及属丰富度整体呈下降趋势,而活性菌株的数量呈
上升趋势,但其抑菌活性差异无统计学意义。核桃根际放线菌群落结构的演替随树龄增加而进行,不同演替阶段的核桃根部
放线菌所产生的抑菌活性物质种类不同,树龄较大的核桃根际放线菌可以作为开发抗生素的新源泉。

关键词: 核桃, 树龄, 放线菌, 演替, 抑菌活性

Abstract:

In order to uncover the community structure of rhizosphere actinomycetes and its ecological functioning characteristics at
different tree age, the spatial displacement was applied to study the community structure of rhizosphere actinomycetes at walnuts of
different tree ages in Yangbi county, Yunnan province. Furthermore, the bacteriostatic activity of rhizosphere actinomycetes community
against the Staphylococcus aureus, Escherichia coli and Penicillium were also tested. The results showed that accompanied by the tree
age increased, both of the detection rate and species richness of rhizosphere actinomycetes strains declined. The number of active
strains showed an upward trend, but there was no significant difference in its bacteriostasis activity. Generally, the succession of
actinomycetes community structure in rhizosphere would go along with the growth of walnut tree. An ecological functioning shift caused
by the different types of antimicrobial activity substances produced by actinomycetes, this would provide the potential resources for
novel antibiotics.

Key words: walnut, tree age, actinomycetes, succession, bacteriostatic activity

中图分类号: