Arid
DOI10.1016/j.apsoil.2023.105027
Core autotrophic microbes drive functional stability of soil cbbL-containing autotrophic microbes during desertification
Bu, Lianyan; Peng, Ziheng; Tian, Jing; Zhang, Xinxin; Chen, Wenfeng; An, Derong; Wei, Gehong; Wang, Honglei
通讯作者Wei, GH
来源期刊APPLIED SOIL ECOLOGY
ISSN0929-1393
EISSN1873-0272
出版年2023
卷号190
英文摘要The desertification process is characterized by the degradation of soil habitats and attenuation of plant biomass, leading to decreased soil carbon (C) input and increased environmental stress gradients of soil microbes. C di-oxide assimilation driven through autotrophic microorganisms is the main process of soil C cycling, and the ecological role of autotrophic microbes is critical for soil C sequestration. However, the feedback dynamics of autotrophic microbes and their functional activity in soil profiles during desertification have not been explored. Here, we analysed three typical stages of desertification (potential, moderate and severe desertification) by high-throughput sequencing and enzyme activity assays to investigate the variation trends of autotrophic microbes and the maintenance of C fixation activity along soil profiles (0-100 cm) as desertification proceeded. We found that the desertification process reduced the abundance and diversity of autotrophic microbes, but increased the activity of soil microbial C fixation enzymes, which highlights the importance of microbial CO2 fixation in oligotrophic soil profiles in desert ecosystems. In particular, we demonstrated that core autotrophic microbes drove the compositional difference of autotrophic microbes, which in turn affected soil C fixation activity, suggesting that core autotrophic microbes are critical for maintaining C sequestration during desertification. Taken together, these results strengthen our comprehension of the factors driving soil functional stability and emphasize that core microbes should be viewed as pivotal factors in maintaining functional activity and ecosystem sustainability during desertification.
英文关键词cbbL gene Autotrophic microbes Desertification process Microbial diversity RubisCO activity
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:001030017200001
WOS关键词RUBISCO GENES ; ATMOSPHERIC CO2 ; DIVERSITY ; COMMUNITY ; BACTERIAL ; CARBON ; FIXATION ; DESERT ; MECHANISMS ; ABUNDANCE
WOS类目Soil Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/395383
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GB/T 7714
Bu, Lianyan,Peng, Ziheng,Tian, Jing,et al. Core autotrophic microbes drive functional stability of soil cbbL-containing autotrophic microbes during desertification[J],2023,190.
APA Bu, Lianyan.,Peng, Ziheng.,Tian, Jing.,Zhang, Xinxin.,Chen, Wenfeng.,...&Wang, Honglei.(2023).Core autotrophic microbes drive functional stability of soil cbbL-containing autotrophic microbes during desertification.APPLIED SOIL ECOLOGY,190.
MLA Bu, Lianyan,et al."Core autotrophic microbes drive functional stability of soil cbbL-containing autotrophic microbes during desertification".APPLIED SOIL ECOLOGY 190(2023).
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