干旱区生态环境知识资源中心(Arid): Shifts in Bacterial Community Composition and Functional Traits at Different Time Periods Post-deglaciation of Gangotri Glacier, Himalaya

Arid

DOI	10.1007/s00284-022-02779-8
	Shifts in Bacterial Community Composition and Functional Traits at Different Time Periods Post-deglaciation of Gangotri Glacier, Himalaya
	Bhattacharya, Pamela; Tiwari, Pankaj; Talukdar, Gautam; Rawat, Gopal S.
通讯作者	Rawat, GS (corresponding author)，Wildlife Inst India, Dehra Dun 248001, Uttarakhand, India.
来源期刊	CURRENT MICROBIOLOGY
ISSN	0343-8651
EISSN	1432-0991
出版年	2022
卷号	79 期号:3
英文摘要	Climate change causes an unprecedented increase in glacial retreats. The melting ice exposes land for colonization and diversification of bacterial communities leading to soil development, changes in plant community composition, and ecosystem functioning. Although a few studies have focused on macro-level deglaciation impacts, little is known about such effects on the bacterial community succession. Here, we provide meta-barcoding-based insight into the ecological attributes of bacterial community across different retreating periods of the Gangotri glacier, western Himalaya. We selected three sites along a terminal moraine representing recent (similar to 20 yrs), intermediate (similar to 100 yrs), and late (similar to 300 yrs) deglaciation periods. Results showed that the genus Mycobacterium belonging to phylum Actinobacteria dominated recently deglaciated land. Relative abundance of these pioneer bacterial taxa decreased by 20-50% in the later stages with the emergence of new and rising of the less abundant members of the phyla Proteobacteria, Firmicutes, Planctomycetes, Acidobacteria, Verrucomicrobia, Candidatus TM6, and Chloroflexi. The community in the recent stage was less rich and harbored competitive interactions, while the later stages experienced a surge in bacterial diversity with cooperative interactions. The shift in alpha-diversity and composition was strongly influenced by soil organic carbon, carbon to nitrogen ratio, and soil moisture content. The functional analyses revealed a progression from a metabolism focused to a functionally progressive community required for bacterial co-existence and succession in plant communities. Overall, the findings indicate that the bacterial communities inhabit, diversify, and develop specialized functions post-deglaciation leading to nutrient inputs to soil and vegetation development, which may provide feedback to climate change.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000752340700005
WOS关键词	MICROBIAL COMMUNITIES ; WESTERN HIMALAYA ; DIVERSITY ; SUCCESSION ; ECOLOGY ; DESERT
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376247
作者单位	[Bhattacharya, Pamela; Tiwari, Pankaj; Talukdar, Gautam; Rawat, Gopal S.] Wildlife Inst India, Dehra Dun 248001, Uttarakhand, India
推荐引用方式 GB/T 7714	Bhattacharya, Pamela,Tiwari, Pankaj,Talukdar, Gautam,et al. Shifts in Bacterial Community Composition and Functional Traits at Different Time Periods Post-deglaciation of Gangotri Glacier, Himalaya[J],2022,79(3).
APA	Bhattacharya, Pamela,Tiwari, Pankaj,Talukdar, Gautam,&Rawat, Gopal S..(2022).Shifts in Bacterial Community Composition and Functional Traits at Different Time Periods Post-deglaciation of Gangotri Glacier, Himalaya.CURRENT MICROBIOLOGY,79(3).
MLA	Bhattacharya, Pamela,et al."Shifts in Bacterial Community Composition and Functional Traits at Different Time Periods Post-deglaciation of Gangotri Glacier, Himalaya".CURRENT MICROBIOLOGY 79.3(2022).