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

Abstract

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

CLC Number:

Q938.1

Wang Chuanqi1,2, Xiao Wen2, Yan Lihong3, Ma Rui1,2, Yang Xiaoyan3*. Ecological Characteristics of Actinomycetes Community in Walnut Rhizosphere at
Different Succession Stages[J]. , 2018, 3(6): 79-83.

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