干旱区生态环境知识资源中心(Arid): Landscape differentiation of soil bacteria and bacteria-soil-vegetation interactions in desert-oasis ecosystems

Arid

DOI	10.1016/j.gloplacha.2023.104323
	Landscape differentiation of soil bacteria and bacteria-soil-vegetation interactions in desert-oasis ecosystems
	Chen, Lijuan; Li, Changsheng; Zhang, Zhishan; Feng, Qi; Xi, Haiyang; Guo, Rui; Zhang, Chengqi; Wei, Yuxi
通讯作者	Li, CS
来源期刊	GLOBAL AND PLANETARY CHANGE
ISSN	0921-8181
EISSN	1872-6364
出版年	2024
卷号	232
英文摘要	Desertification control and oasis management are of strategic importance for the protection of ecological security and the achievement of sustainable development in arid regions. However, the role of soil microorganisms in desertification and oasification has been historically overlooked, especially for the influence of microbial communities on landscape change and the stability of soil-vegetation system in desert-oasis ecosystems. Here, using an environmental sampling approach combined with functional annotation, the landscape differentiation of soil bacterial diversity, community structure and functional traits, as well as the bacteria-soil-vegetation interactions were investigated in desert, oasis and desert-oasis ecotone habitats. The results showed that soil bacterial diversity increased significantly from desert, ecotone to oasis, and the highest spatial differentiation of bacterial diversity was observed in desert. The simplest and unique bacterial composition was detected in desert, which was dominant by Arthrobacter, Streptomyces, Burkholderia, etc. However, the phyla Actinobacteria, Proteobacteria, Acidobacteria, Chloroflexi, and the genus Candidatus_Nitrososphaera were the crucial biomarkers for distinguishing the composition differences across different landscapes. In terms of bacterial composition shift, it was far more challenging to go from ecotone to oasis than from desert to ecotone. Meanwhile, the most stable functional network was exhibited in oasis, while the simplest network was detected in ecotone rather than in desert. Relatively high soil moisture, total nitrogen, organic carbon, total phosphorus, and silt and clay proportions played decisive roles in improving microbial diversity, community structure and functional service, which would enhance the stability and diversity of desert-oasis ecosystems. Furthermore, increase in the relative abundances of functional genes, which were related to metabolism, environmental information processing, and organismal systems, may be harmful to nitrogen cycling and vegetation growth. These results conclude that the landscape differentiation of soil bacteria in desert, ecotone and oasis identifies the central role of bacterial interactions in ecosystem processes and highlights the importance of landscape stability control, forming a novel perspective of microbial behaviour in controlling landscape stability in desert-oasis ecosystems.
英文关键词	Diversity Community structure Functional network Interactions Desert and oasis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001135054500001
WOS关键词	MICROBIAL DIVERSITY ; BIOGEOGRAPHY ; COMMUNITIES ; MICROORGANISMS ; RICHNESS ; FUNGAL
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403968
推荐引用方式 GB/T 7714	Chen, Lijuan,Li, Changsheng,Zhang, Zhishan,et al. Landscape differentiation of soil bacteria and bacteria-soil-vegetation interactions in desert-oasis ecosystems[J],2024,232.
APA	Chen, Lijuan.,Li, Changsheng.,Zhang, Zhishan.,Feng, Qi.,Xi, Haiyang.,...&Wei, Yuxi.(2024).Landscape differentiation of soil bacteria and bacteria-soil-vegetation interactions in desert-oasis ecosystems.GLOBAL AND PLANETARY CHANGE,232.
MLA	Chen, Lijuan,et al."Landscape differentiation of soil bacteria and bacteria-soil-vegetation interactions in desert-oasis ecosystems".GLOBAL AND PLANETARY CHANGE 232(2024).