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Soil Bacterial Communities and Diversity in Alpine Grasslands on the Tibetan Plateau Based on 16S rRNA Gene Sequencing

文献类型：期刊论文

作者Jiang, Hongmao2,3; Chen, Youchao1; Hu, Yang3; Wang, Ziwei2,3; Lu, Xuyang2
刊名FRONTIERS IN ECOLOGY AND EVOLUTION
出版日期2021-02-16
卷号9页码:14
ISSN号2296-701X
关键词soil bacteria soil microorganism alpine grassland Tibetan Plateau 16S rRNA
DOI10.3389/fevo.2021.630722
通讯作者Lu, Xuyang(xylu@imde.ac.cn)
英文摘要The Tibetan Plateau, widely known as the world's "Third Pole," has gained extensive attention due to its susceptibility to climate change. Alpine grasslands are the dominant ecosystem on the Tibetan Plateau, albeit little is known about the microbial community and diversity among different alpine grassland types. Here, soil bacterial composition and diversity in the upper soils of five alpine grassland ecosystems, alpine meadow (AM), alpine steppe (AS), alpine meadow steppe (AMS), alpine desert (AD), and alpine desert steppe (ADS), were investigated based on the 16S rRNA gene sequencing technology. Actinobacteria (46.12%) and Proteobacteria (29.67%) were the two dominant soil bacteria at the phylum level in alpine grasslands. There were significant differences in the relative abundance at the genus level among the five different grassland types, especially for the Rubrobacter, Solirubrobacter, Pseudonocardia, Gaiella, Haliangium, and Geodermatophilus. Six alpha diversity indices were calculated based on the operational taxonomic units (OTUs), including Good's coverage index, phylogenetic diversity (PD) whole tree index, Chao1 index, observed species index, Shannon index, and Simpson index. The Good's coverage index value was around 0.97 for all the grassland types in the study area, meaning the soil bacteria samplings sequenced sufficiently. No statistically significant difference was shown in other diversity indices' value, indicating the similar richness and evenness of soil bacteria in these alpine grasslands. The beta diversity, represented by Bray-Curtis dissimilarity and the non-metric multidimensional scaling (NMDS), showed that OTUs were clustered within alpine grasslands, indicating a clear separation of soil bacterial communities. In addition, soil organic matter (SOM), total nitrogen (TN), total phosphorus (TP), pH, and soil water content (SWC) were closely related to the variations in soil bacterial compositions. These results indicated that soil bacterial taxonomic compositions were similar, while soil bacterial community structures were different among the five alpine grassland types. The environmental conditions, including SOM, TN, TP, pH, and SWC, might influence the soil bacterial communities on the Tibetan Plateau.
资助项目National Natural Science Foundation of China[41877338] ; National Natural Science Foundation of China[31901198]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者FRONTIERS MEDIA SA
WOS记录号WOS:000624074500001
资助机构National Natural Science Foundation of China
源URL[http://ir.imde.ac.cn/handle/131551/56016]  
专题成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者Lu, Xuyang
作者单位1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu, Peoples R China
3.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Hongmao,Chen, Youchao,Hu, Yang,et al. Soil Bacterial Communities and Diversity in Alpine Grasslands on the Tibetan Plateau Based on 16S rRNA Gene Sequencing[J]. FRONTIERS IN ECOLOGY AND EVOLUTION,2021,9:14.
APA Jiang, Hongmao,Chen, Youchao,Hu, Yang,Wang, Ziwei,&Lu, Xuyang.(2021).Soil Bacterial Communities and Diversity in Alpine Grasslands on the Tibetan Plateau Based on 16S rRNA Gene Sequencing.FRONTIERS IN ECOLOGY AND EVOLUTION,9,14.
MLA Jiang, Hongmao,et al."Soil Bacterial Communities and Diversity in Alpine Grasslands on the Tibetan Plateau Based on 16S rRNA Gene Sequencing".FRONTIERS IN ECOLOGY AND EVOLUTION 9(2021):14.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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