干旱区生态环境知识资源中心(Arid): Soil bacterial communities in alpine wetlands in arid Central Asia remain stable during the seasonal freeze-thaw period

Arid

DOI	10.1016/j.ecolind.2023.111164
	Soil bacterial communities in alpine wetlands in arid Central Asia remain stable during the seasonal freeze-thaw period
	Chen, Mo; Yang, Zailei; Abulaizi, Maidinuer; Hu, Yang; Tian, Yuxin; Hu, Yunpeng; Yu, Guangling; Zhu, Xinping; Yu, Pujia; Jia, Hongtao
通讯作者	Jia, HT
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2023
卷号	156
英文摘要	Under the background of climate change, freeze-thaw patterns tend to be turbulent: ecosystem function processes and their mutual feedback mechanisms with microorganisms in sensitive areas around the world are currently a hot topic of research. We studied changes of soil properties in alpine wetlands located in arid areas of Central Asia during the seasonal freeze-thaw period (which included an initial freezing period, a deep freezing period, and a thawing period), and analyzed changes in soil bacterial community diversity, structure, network in different stages with the help of high-throughput sequencing technology. The results showed that the alpha diversity of the soil bacterial community showed a continuous decreasing trend during the seasonal freeze-thaw period. The relative abundance of dominant bacterial groups (Proteobacteria (39.04%-41.28%) and Bacteroidota (14.61%-20.12%)) did not change significantly during the freeze-thaw period. At the genus level, different genera belonging to the same phylum dominated in different stages, or there were clusters of genera belonging to different phylum. For example, g_Ellin6067, g_unclassified_f_Geobacteraceae, g_unclassified_f_Gemmatimonadaceae coexisted in the same cluster, belonging to Proteobacteria, Desulfobacterota and Gemmatimonadota respectively, and their abundance increased significantly during the freezing period. This adaptive freeze-thaw phylogenetic model suggests a heterogeneous stress resistance of bacteria during the freeze-thaw period. In addition, network analysis showed that, although the bacterial network was affected to some extent by environmental changes during the initial freezing period and its recovery in the thawing period lagged behind, the network complexity and stability did not change much as a whole. Our results prove that soil bacterial communities in alpine wetlands are highly resistant and adaptive to seasonal freeze-thaw conditions. As far as we know, compared with short-term freeze-thaw cycles research, this is the first study examining the influence of seasonal freeze-thaw on soil bacterial communities in alpine wetlands. Overall, our findings provide a solid base for further investigations of biogeochemical cycle processes under future climate change.
英文关键词	Seasonal freeze-thaw period Microbial network Alpine wetland Bacterial community Community structure
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001095834400001
WOS关键词	ORGANIC-MATTER ; SNOW COVER ; NITROGEN ; DROUGHT ; CARBON ; CYCLES
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395973
推荐引用方式 GB/T 7714	Chen, Mo,Yang, Zailei,Abulaizi, Maidinuer,et al. Soil bacterial communities in alpine wetlands in arid Central Asia remain stable during the seasonal freeze-thaw period[J],2023,156.
APA	Chen, Mo.,Yang, Zailei.,Abulaizi, Maidinuer.,Hu, Yang.,Tian, Yuxin.,...&Jia, Hongtao.(2023).Soil bacterial communities in alpine wetlands in arid Central Asia remain stable during the seasonal freeze-thaw period.ECOLOGICAL INDICATORS,156.
MLA	Chen, Mo,et al."Soil bacterial communities in alpine wetlands in arid Central Asia remain stable during the seasonal freeze-thaw period".ECOLOGICAL INDICATORS 156(2023).