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Distinct Taxonomic and Functional Profiles of the Microbiome Associated With Different Soil Horizons of a Moist Tussock Tundra in Alaska

Cited 14 time in wos
Cited 15 time in scopus
Title
Distinct Taxonomic and Functional Profiles of the Microbiome Associated With Different Soil Horizons of a Moist Tussock Tundra in Alaska
Other Titles
알래스카 툰드라 지역에서의 토양 층위에 따라 구별되는 미생물 특성 연구
Authors
Tripathi, Binu M.
Kim, Hye Min
Jung, Ji Young
Nam, Sungjin
Ju, Hyeon Tae
Kim, Mincheol
Lee, Yoo Kyung
Subject
Microbiology
Keywords
Arctic tundrametagenomicsmicrobiomepermafrost soilphylogenetic null modeling
Issue Date
2019-06
Citation
Tripathi, Binu M., et al. 2019. "Distinct Taxonomic and Functional Profiles of the Microbiome Associated With Different Soil Horizons of a Moist Tussock Tundra in Alaska". FRONTIERS IN MICROBIOLOGY, 10(1): 1442-1446.
Abstract
Permafrost-underlain tundra soils in Northern Hemisphere are one of the largest reservoirs of terrestrial carbon, which are highly sensitive to microbial decomposition due to climate warming. However, knowledge about the taxonomy and functions of microbiome residing in different horizons of permafrost-underlain tundra soils is still limited. Here we compared the taxonomic and functional composition of microbiome between different horizons of soil cores from a moist tussock tundra ecosystem in Council, Alaska, using 16S rRNA gene and shotgun metagenomic sequencing. The composition, diversity and functions of microbiome varied significantly between soil horizons, with top soil horizon harbored more diverse communities than sub-soil horizons. The vertical gradient in soil physico-chemical parameters were strongly associated with composition of microbial communities across permafrost soil horizons; however, a large fraction of the variation in microbial communities remained unexplained. The genes associated with carbon mineralization were more abundant in top soil horizon, while genes involved in acetogenesis, fermentation, methane metabolism (methanogenesis and methanotrophy) and N cycling were dominant in sub-soil horizons. The results of phylogenetic null modeling analysis showed that stochastic processes strongly influenced the composition of the microbiome in different soil horizons, except the bacterial community composition in top soil horizon, which was largely governed by homogeneous selection. Our study expands the knowledge on the structure and functional potential of microbiome associated with different horizons of permafrost soil, which could be useful in understanding the effects of environmental change on microbial responses in tundra ecosystems.
URI
https://repository.kopri.re.kr/handle/201206/10918
DOI
http://dx.doi.org/10.3389/fmicb.2019.01442
Type
Article
Station
기타
Indexed
SCIE
Appears in Collections  
2019-2020, Structural and functional characterization of Arctic soil microbiome (19-20) / Lee, Yoo Kyung (PN19030)
2019-2019, Arctic permafrost environment change monitoring and prediction method developments (19-19) / Lee, Bang Yong (PN19081)
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