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学科主题: 生物科学::普通生物学
题名: Diversity and succession of autotrophic microbial community in high-elevation soils along deglaciation chronosequence
作者: Liu, JB (Liu, Jinbo)1; Kong, WD (Kong, Weidong)1; Zhang, GS (Zhang, Guoshuai)2; Khan, A (Khan, Ajmal)1; Guo, GX (Guo, Guangxia)1; Zhu, CM (Zhu, Chunmao)1; Wei, XJ (Wei, Xiaojie)1; Kang, SC (Kang, Shichang)3, 4; Morgan-Kiss, RM (Morgan-Kiss, Rachael M.)5
通讯作者: Kong, WD
关键词: COVERED ANTARCTIC LAKE ; GLACIER FORELAND ; ZHADANG GLACIER ; BACTERIAL SUCCESSION ; RUBISCO GENOTYPES ; TIBETAN PLATEAU ; DRY VALLEYS ; DNA-DAMAGE ; FORM-II ; CARBON
刊名: FEMS MICROBIOLOGY ECOLOGY
发表日期: 2016
DOI: 10.1093/femsec/fiw160
卷: 92, 期:10, 页:fiw160
收录类别: SCI
合作性质: 国际
文章类型: Article
部门归属: 生态
英文摘要: Global warming has resulted in substantial glacier retreats in high-elevation areas, exposing deglaciated soils to harsh environmental conditions. Autotrophic microbes are pioneering colonizers in the deglaciated soils and provide nutrients to the extreme ecosystem devoid of vegetation. However, autotrophic communities remain less studied in deglaciated soils. We explored the diversity and succession of the cbbL gene encoding the large subunit of form I RubisCO, a key CO2-fixing enzyme, using molecular methods in deglaciated soils along a 10-year deglaciation chronosequence on the Tibetan Plateau. Our results demonstrated that the abundance of all types of form I cbbL (IA/B, IC and ID) rapidly increased in young soils (0-2.5 years old) and kept stable in old soils. Soil total organic carbon (TOC) and total nitrogen (TN) gradually increased along the chronosequence and both demonstrated positive correlations with the abundance of bacteria and autotrophs, indicating that soil TOC and TN originated from autotrophs. Form IA/B autotrophs, affiliated with cyanobacteria, exhibited a substantially higher abundance than IC and ID. Cyanobacterial diversity and evenness increased in young soils (< 6 years old) and then remained stable. Our findings suggest that cyabobacteria play an important role in accumulating TOC and TN in the deglaciated soils.Autotrophic microorganisms rapidly colonized young deglaciated soils and their abundance positively correlated with total organic carbon and total nitrogen, suggesting that soil TOC and TN originated from autotrophs.Autotrophic microorganisms rapidly colonized young deglaciated soils and their abundance positively correlated with total organic carbon and total nitrogen, suggesting that soil TOC and TN originated from autotrophs.
语种: 英语
WOS记录号: WOS:000386074400016
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7543
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Bldg 3,Courtyard 16,Lincui Rd, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Bldg 3,Courtyard 16,Lincui Rd, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
5.Miami Univ, Dept Microbiol, Oxford, OH 45056 USA

Recommended Citation:
Liu, JB ,Kong, WD ,Zhang, GS ,et al. Diversity and succession of autotrophic microbial community in high-elevation soils along deglaciation chronosequence[J]. FEMS MICROBIOLOGY ECOLOGY,2016,92(10):fiw160.
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