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Myxobacterial community is a predominant and highly diverse bacterial group in soil niches
Author(s) -
Zhou Xiuwen,
Li Shuguang,
Li Wei,
Jiang Deming,
Han Kui,
Wu Zhihong,
Li Yuezhong
Publication year - 2014
Publication title -
environmental microbiology reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.229
H-Index - 69
ISSN - 1758-2229
DOI - 10.1111/1758-2229.12107
Subject(s) - myxobacteria , biology , 16s ribosomal rna , pyrosequencing , hypervariable region , ecological niche , ecology , community structure , microbial food web , bacteria , ecosystem , food web , gene , genetics , habitat
Summary Although many molecular ecological surveys have been conducted, there is little concerning the details of specific bacterial groups, resulting in an incomplete understanding of the microorganismal composition and community structures in the environment. Myxobacteria are micropredators that are metabolically active in the soil microbial food web and have typically been considered minority components of soil bacterial communities. In this study, we surveyed the percentage of myxobacteria in a single soil sample via pyrosequencing on combined universal libraries of the V 3‐ V 4 and V 6‐ V 8 hypervariable regions of the 16 S rRNA gene. Surprisingly, myxobacteria accounted for 4.10% of the bacterial community and 7.5% of the total operational taxonomic units at the 3% similarity level in the soil, containing almost all of the cultivated myxobacterial families or genera. To testify the appearance of myxobacteria in soil niches, we retrieved myxobacteria‐related 16 S rRNA gene sequences of 103 high‐throughput sequencing data sets obtained from public databases. The results indicated that myxobacteria‐related sequences were among the predominant groups in these data sets accounting for 0.4–4.5% of bacterial communities. The abundance of myxobacterial communities were correlated with site temperature, carbon‐to‐nitrogen ratio and pH values. Based on these results, we discussed the survival strategies of myxobacterial community in soil.