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Phylogenetic diversity of bacteria isolates from the Qinghai-Tibet Plateau permafrost region
Zhang, Gaosen; Niu, Fujun; Ma, Xiaojun; Liu, We; Dong, Maoxing; Feng, Huyuan; An, Lizhe; Cheng, Guodong
2007-08
Source PublicationCANADIAN JOURNAL OF MICROBIOLOGY   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN0008-4166
Volume53Issue:8Pages:1000-1010
AbstractThe Qinghai-Tibet Plateau in east Asia is a unique and important permafrost environment. However, its microbiology remains largely unexplored to date. In this study, sediment samples were collected from the Qinghai-Tibet Plateau permafrost region, bacteria isolation procedures were performed 8 times, and the samples incubated at 4 degrees C for nearly 3 months. The number of colony forming units (cfu) ranged from 0 to 10(7)/(g dry soil). The quantity of culturable bacteria grew exponentially within the first few weeks, and then slowed gradually to a plateau. Phylogenetic analyses indicated that all the isolates fell into 6 categories: high G+C Gram-positive bacteria, low G+C Gram-positive bacteria, alpha-Proteobacteria, beta-Proteobacteria, gamma-Proteobacteria, and Cytophaga-Flavobacterium-Bacteroides group bacteria. The isolates belong to 19 genera, but the genera Arthrobacter and Pseudomonas were predominant. With the increase in incubation time, the isolated populations changed in terms of both species and their respective quantities. Of the 33 analyzed isolates, 9 isolates related to 8 genera might be new taxa. These results suggest that the Qinghai-Tibet Plateau permafrost region is a specific ecologic niche that accommodates an original microbial assemblage.
Keywordculturable microorganism dynamics extreme environments high altitude permafrost permafrost degradation microbial diversity
Subject AreaBiochemistry & Molecular Biology ; Biotechnology & Applied Microbiology ; Immunology ; Microbiology
PublisherNATL RESEARCH COUNCIL CANADA
DOI10.1139/W07-031
Publication PlaceOTTAWA
Indexed BySCIE ; EI ; PubMed ; MEDLINE ; BIOSIS
Language英语
First Inst
WOS IDWOS:000249947000009
SubtypeArticle
EI ID20074510908254
PMID 17898857
BIOSIS IDBIOSIS:PREV200800079845
DepartmentLanzhou Univ, Minist Educ, Key Lab Arid & Grassland Agrioecol, Sch Life Sci, Lanzhou 730000, Peoples R China;
Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/114512
Collection生命科学学院
Corresponding AuthorFeng, Huyuan
Affiliation
1.Lanzhou Univ, Minist Educ, Key Lab Arid & Grassland Agrioecol, Sch Life Sci, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Gaosen,Niu, Fujun,Ma, Xiaojun,et al. Phylogenetic diversity of bacteria isolates from the Qinghai-Tibet Plateau permafrost region[J]. CANADIAN JOURNAL OF MICROBIOLOGY,2007,53(8):1000-1010.
APA Zhang, Gaosen.,Niu, Fujun.,Ma, Xiaojun.,Liu, We.,Dong, Maoxing.,...&Cheng, Guodong.(2007).Phylogenetic diversity of bacteria isolates from the Qinghai-Tibet Plateau permafrost region.CANADIAN JOURNAL OF MICROBIOLOGY,53(8),1000-1010.
MLA Zhang, Gaosen,et al."Phylogenetic diversity of bacteria isolates from the Qinghai-Tibet Plateau permafrost region".CANADIAN JOURNAL OF MICROBIOLOGY 53.8(2007):1000-1010.
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