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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제23권 제9호
- 발행연도
- 2013.1
- 수록면
- 1,187 - 1,196 (10page)
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초록· 키워드
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Global warming will have far-reaching effects on our ecosystem. However, its effects on Antarctic soils have been poorly explored. To assess the effects of warming on microbial abundance and community composition, we sampled Antarctic soils from the King George Island in the Antarctic Peninsula and incubated these soils at elevated temperatures of 5oC and 8oC for 14 days. The reduction in total organic carbon and increase in soil respiration were attributed to the increased proliferation of Bacteria, Fungi, and Archaea. Interestingly,bacterial ammonia monooxygenase (amoA) genes were predominant over archaeal amoA,unlike in many other environments reported previously. Phylogenetic analyses of bacterial and archaeal amoA communities via clone libraries revealed that the diversity of amoA genes in Antarctic ammonia-oxidizing prokaryotic communities were temperature-insensitive. Interestingly,our data also showed that the amoA of Antarctic ammonia-oxidizing bacteria (AOB)communities differed from previously described amoA sequences of cultured isolates and clone library sequences, suggesting the presence of novel Antarctic-specific AOB communities. Denitrification-related genes were significantly reduced under warming conditions, whereas the abundance of amoA and nifH increased. Barcoded pyrosequencing of the bacterial 16S rRNA gene revealed that Proteobacteria, Acidobacteria, and Actinobacteria were the major phyla in Antarctic soils and the effect of short-term warming on the bacterial community was not apparent.
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참고문헌 (23)
참고문헌 신청
Aislabie J / 2008 / Relation between soil classification and bacterial diversity in soils of the Ross Sea region / Geoderma 144 : 9 ~ 20
Aislabie JM / 2006 / Dominant bacteria in soils of Marble Point and Wright Valley, Victoria Land, Antarctica / Soil Biol. Biochem 38 : 3041 ~ 3056
Auguet JC / 2010 / Global ecological patterns in uncultured Archaea / ISME J 4 : 182 ~ 190
Beman JM / 2007 / Distribution and diversity of archaeal ammonia monooxygenase genes associated with corals / Appl. Environ. Microbiol 73 : 5642 ~ 5647
Bernhard AE / 2010 / Abundance of ammonia-oxidizing archaea and bacteria along an estuarine salinity gradient in relation to potential nitrification rates / Appl. Environ. Mi
Aislabie JM / 2006 / Dominant bacteria in soils of Marble Point and Wright Valley, Victoria Land, Antarctica / Soil Biol. Biochem 38 : 3041 ~ 3056
Auguet JC / 2010 / Global ecological patterns in uncultured Archaea / ISME J 4 : 182 ~ 190
Beman JM / 2007 / Distribution and diversity of archaeal ammonia monooxygenase genes associated with corals / Appl. Environ. Microbiol 73 : 5642 ~ 5647
Bernhard AE / 2010 / Abundance of ammonia-oxidizing archaea and bacteria along an estuarine salinity gradient in relation to potential nitrification rates / Appl. Environ. Mi
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