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Change in gene abundance in the nitrogen biogeochemical cycle with temperature and nitrogen addition in Antarctic soils

Cited 100 time in wos
Cited 107 time in scopus
Title
Change in gene abundance in the nitrogen biogeochemical cycle with temperature and nitrogen addition in Antarctic soils
Other Titles
남극토양의 질소 생지화학적 순환에 있어서 미생물 군집 변화
Authors
Jung, Jaejoon
Yeom, Jinki
Kim, Jisun
Han, Jiwon
Lim, Hyoun Soo
Park, Hyun
Hyun, Seunghun
Park, Woojun
Subject
Microbiology
Keywords
Ammonia-oxidizing archaeaAmmonia-oxidizing bacteriaClimate changeNitrificationDenitrificationNitrous oxide
Issue Date
2011-12
Citation
정재준, et al. 2011. "Change in gene abundance in the nitrogen biogeochemical cycle with temperature and nitrogen addition in Antarctic soils". Research in Microbiology, 162(10): 1018-1026.
Abstract
The microbial community (bacterial, archaeal, and fungi) and eight genes involved in the nitrogen biogeochemical cycle (nifH, nitrogen fixation; bacterial and archaeal amoA, ammonia oxidation; narG, nitrate reduction; nirS, nirK, nitrite reduction; norB, nitric oxide reduction; and nosZ, nitrous oxide reduction) were quantitatively assessed in this study, via real-time PCR with DNA extracted from three Antarctic soils. Interestingly, AOB amoA was found to be more abundant than AOA amoA in Antarctic soils. The results of microcosm studies revealed that the fungal and archaeal communities were diminished in response to warming temperatures (10 degrees C) and that the archaeal community was less sensitive to nitrogen addition, which suggests that those two communities are well-adapted to colder temperatures. AOA amoA and norB genes were reduced with warming temperatures. The abundance of only the nifH and nirK genes increased with both warming and the addition of nitrogen. NirS-type denitrifying bacteria outnumbered NirK-type denitrifiers regardless of the treatment used. Interestingly, dramatic increases in both NirS and NirK-types denitrifiers were observed with nitrogen addition. NirK types increase with warming, but NirS-type denitrifiers tend to be less sensitive to warming. Our findings indicated that the Antarctic microbial nitrogen cycle could be dramatically altered by temperature and nitrogen, and that warming may be detrimental to the ammonia-oxidizing archaeal community. To the best of our knowledge, this is the first report to investigate genes associated with each process of the nitrogen biogeochemical cycle in an Antarctic terrestrial soil environment. (C) 2011 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
URI
https://repository.kopri.re.kr/handle/201206/13017
DOI
http://dx.doi.org/10.1016/j.resmic.2011.07.007
Type
Article
Indexed
SCI
Appears in Collections  
2012 Polar Academic Program (PD12010)
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