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Diversity of Culturable Bacteria Isolated from Highland Barley Cultivation Soil in Qamdo, Tibet Autonomous Region

Authors
  • PAN, HU1, 2
  • ZHOU, JIE1
  • DAWA, ZHUOMA2
  • DAI, YANNA2
  • ZHANG, YIFAN2
  • YANG, HUI1
  • WANG, CHONG1
  • LIU, HUHU1
  • ZHOU, HUI1
  • LU, XIANGYANG1
  • TIAN, YUN1
  • 1 Hunan Agricultural University, Changsha , (China)
  • 2 Institute of Agricultural Product Quality Standard and Testing Research, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa , (China)
Type
Published Article
Journal
Polish Journal of Microbiology
Publisher
Exeley Inc.
Publication Date
Mar 12, 2021
Volume
70
Issue
1
Pages
87–97
Identifiers
DOI: 10.33073/pjm-2021-008
Source
Exeley
Keywords
License
Green

Abstract

The soil bacterial communities have been widely investigated. However, there has been little study of the bacteria in Qinghai-Tibet Plateau, especially about the culturable bacteria in highland barley cultivation soil. Here, a total of 830 individual strains were obtained at 4°C and 25°C from a highland barley cultivation soil in Qamdo, Tibet Autonomous Region, using fifteen kinds of media. Seventy-seven species were obtained, which belonged to 42 genera and four phyla; the predominant phylum was Actinobacteria (68.82%), followed by Proteobacteria (15.59%), Firmicutes (14.29%), and Bacteroidetes (1.30%). The predominant genus was Streptomyces (22.08%, 17 species), followed by Bacillus (6.49%, five species), Micromonospora (5.19%, four species), Microbacterium (5.19%, four species), and Kribbella (3.90%, three species). The most diverse isolates belonged to a high G+C Gram-positive group; in particular, the Streptomyces genus is a dominant genus in the high G+C Gram-positive group. There were 62 species and 33 genera bacteria isolated at 25°C (80.52%), 23 species, and 18 genera bacteria isolated at 4°C (29.87%). Meanwhile, only eight species and six genera bacteria could be isolated at 25°C and 4°C. Of the 77 species, six isolates related to six genera might be novel taxa. The results showed abundant bacterial species diversity in the soil sample from the Qamdo, Tibet Autonomous Region.

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