고위도에서의 온도 상승은 $0.6^{\circ}C$/10 년으로, 이는 토양 유기 탄소에 대한 미생물의 분해 활성 증가를 유도한다. 게다가, 분해된 토양 유기 탄소는 이산화탄소 또는 메탄 같은 온실가스로...
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https://www.riss.kr/link?id=A102416675
박하주 (극지연구소) ; 김덕규 (극지연구소) ; 박현 (극지연구소) ; 이방용 (극지연구소) ; 이유경 (극지연구소) ; Park, Ha Ju ; Kim, Dockyu ; Park, Hyun ; Lee, Bang Yong ; Lee, Yoo Kyung
2016
Korean
KCI등재,SCOPUS
학술저널
365-374(10쪽)
0
0
상세조회0
다운로드국문 초록 (Abstract)
고위도에서의 온도 상승은 $0.6^{\circ}C$/10 년으로, 이는 토양 유기 탄소에 대한 미생물의 분해 활성 증가를 유도한다. 게다가, 분해된 토양 유기 탄소는 이산화탄소 또는 메탄 같은 온실가스로...
고위도에서의 온도 상승은 $0.6^{\circ}C$/10 년으로, 이는 토양 유기 탄소에 대한 미생물의 분해 활성 증가를 유도한다. 게다가, 분해된 토양 유기 탄소는 이산화탄소 또는 메탄 같은 온실가스로 전환, 방출되어 기후 변화를 가속화시킨다. 따라서, 토양 유기 탄소 분해와 관련된 미생물의 다양성 및 기능 이해를 위한 토양 해동 모델 연구가 필요하다. 이러한 연구를 위하여 Alaska Council의 두 깊이의 토양(SPF와 PF라 각각 명명한 30-40와 50-60 cm 깊이의 토양)을 $0^{\circ}C$에서 108일 동안 배양하였다. 환경 모사 실험 동안 pyrosequencing을 수행하였고, metagenome을 분석하여 총 111,804개의 미생물 sequence를 얻었다. 이 중, 574-1,128개의 세균 operational taxonomic unit (OTU)과 30-57개의 고세균 OTU를 확인하였다. 토양 배양에 따라 두 토양 모두에서 Crenarchaeota phyla의 상대적 분포가 증가하였으며, Actinobacteria와 Firmicutes phyla의 분포가 SPF와 PF에서 각각 크게 증가하였다. 추출한 토양 유기 탄소에 대한 무게 측정 및 gel permeation chromatography를 통해, 환경 모사 실험이 진행되는 동안 토양 유기 탄소의 주요 구성 성분인 부식산(humic acids)이 중합화(humification)되는 것을 확인하였다. 결론적으로, 냉대 툰드라 동토의 해동은 Crenarchaeota, Actinobacteria 및 Firmicutes phyla의 증가를 야기시키며, 미생물에 의한 토양 유기 탄소 분해 및 이용을 야기시키는 것으로 예측된다.
다국어 초록 (Multilingual Abstract)
In high-latitude regions, temperature has risen ($0.6^{\circ}C$ per decade) and this leads to the increase in microbial degradability against soil organic carbon (SOC). Furthermore, the decomposed SOC is converted into green-house gases ($CO_2$ and $C...
In high-latitude regions, temperature has risen ($0.6^{\circ}C$ per decade) and this leads to the increase in microbial degradability against soil organic carbon (SOC). Furthermore, the decomposed SOC is converted into green-house gases ($CO_2$ and $CH_4$) and their release could further increase the rate of climate change. Thus, understanding the microbial diversity and their functions linked with SOC degradation in soil-thawing model is necessary. In this study, we divided tundra soil from Council, Alaska into two depth regions (30-40 cm and 50-60 cm of depth, designated as SPF and PF, respectively) and incubated that for 108 days at $0^{\circ}C$. A total of 111,804 reads were obtained through a pyrosequencing-based metagenomic study during the microcosm experiments, and 574-1,128 of bacterial operational taxonomic units (OTUs) and 30-57 of archaeal OTUs were observed. Taxonomic analysis showed that the distribution of bacterial taxa was significantly different between two samples. In detail, the relative abundance of phyla Actinobacteria and Firmicutes largely increased in SPF and PF soil, respectively, while phyla Crenarchaeota was increased in both soil samples. Weight measurement and gel permeation chromatography of the SOC extracts demonstrated that polymerization of humic acids, main component of SOC, occurred during the microcosm experiments. Taken together our results indicate that these bacterial and archaeal phyla could play a key function in SOC degradation and utilization in cold tundra soil.
참고문헌 (Reference)
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2 Bugg, T. D. H., "The emerging role for bacteria in lignin degradation and bio-product formation" 22 : 1-7, 2010
3 Park, H. J., "Temporal changes in soil bacterial diversity and humic substances degradation in subarctic tundra soil" 69 : 668-675, 2015
4 Chowdhury, T. R., "Stoichiometry and temperature sensitivity of methanogenesis and CO2 production from saturated polygonal tundra in Barrow, Alaska" 21 : 722-737, 2015
5 Paul, E. A., "Soil microbiology, ecology, and biochemistry" Academic press 421-446, 2014
6 Strawn, D. G., "Soil chemistry" Wiley-Blackwell 138-141, 2015
7 Deng, J., "Shifts of tundra bacteria and archaeal communities along a permafrost thaw gradient in Alaska" 24 : 222-234, 2015
8 Brown, J., "Report from the International Permafrost Association: state of permafrost in the first decade of the 21st century" 19 : 255-260, 2008
9 Barber, V. A., "Reduced growth of Alaskan white spruce in the twentieth century from temperatureinduced drought stress" 405 : 668-673, 2000
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Epigallocatechin Gallate (EGCG)에 노출된 용혈성 Bacillus cereus MH-2의 세포 반응 및 프로테옴 분석
Firmicutes와 Actinobacteria에 속하는 세균들의 Erm 단백질 in vitro 활성 비교
학술지 이력
연월일 | 이력구분 | 이력상세 | 등재구분 |
---|---|---|---|
2023 | 평가예정 | 해외DB학술지평가 신청대상 (해외등재 학술지 평가) | |
2020-01-01 | 평가 | 등재학술지 유지 (해외등재 학술지 평가) | |
2013-12-02 | 학술지명변경 | 외국어명 : The Korean Journal of Microbiology -> Korean Journal of Microbiology | |
2010-01-01 | 평가 | 등재학술지 유지 (등재유지) | |
2008-01-01 | 평가 | 등재학술지 유지 (등재유지) | |
2006-01-01 | 평가 | 등재학술지 유지 (등재유지) | |
2004-01-01 | 평가 | 등재학술지 유지 (등재유지) | |
2001-01-01 | 평가 | 등재학술지 선정 (등재후보2차) | |
1998-07-01 | 평가 | 등재후보학술지 선정 (신규평가) |
학술지 인용정보
기준연도 | WOS-KCI 통합IF(2년) | KCIF(2년) | KCIF(3년) |
---|---|---|---|
2016 | 0.21 | 0.21 | 0.21 |
KCIF(4년) | KCIF(5년) | 중심성지수(3년) | 즉시성지수 |
0.26 | 0.24 | 0.48 | 0.02 |