干旱区生态环境知识资源中心(Arid): Core autotrophic microbes drive functional stability of soil cbbL-containing autotrophic microbes during desertification

Arid

DOI	10.1016/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
ISSN	0929-1393
EISSN	1873-0272
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
推荐引用方式 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).