| RRC ID |
29349
|
| 著者 |
Nunoura T, Nishizawa M, Kikuchi T, Tsubouchi T, Hirai M, Koide O, Miyazaki J, Hirayama H, Koba K, Takai K.
|
| タイトル |
Molecular biological and isotopic biogeochemical prognoses of the nitrification-driven dynamic microbial nitrogen cycle in hadopelagic sediments.
|
| ジャーナル |
Environ Microbiol
|
| Abstract |
There has been much progress in understanding the nitrogen cycle in oceanic waters including the recent identification of ammonia-oxidizing archaea and anaerobic ammonia oxidizing (anammox) bacteria, and in the comprehensive estimation in abundance and activity of these microbial populations. However, compared with the nitrogen cycle in oceanic waters, there are fewer studies concerning the oceanic benthic nitrogen cycle. To further elucidate the dynamic nitrogen cycle in deep-sea sediments, a sediment core obtained from the Ogasawara Trench at a water depth of 9760 m was analysed in this study. The profiles obtained for the pore-water chemistry, and nitrogen and oxygen stable isotopic compositions of pore-water nitrate in the hadopelagic sediments could not be explained by the depth segregation of nitrifiers and nitrate reducers, suggesting the co-occurrence of nitrification and nitrate reduction in the shallowest nitrate reduction zone. The abundance of SSU rRNA and functional genes related to nitrification and denitrification are consistent with the co-occurrence of nitrification and nitrate reduction observed in the geochemical analyses. This study presents the first example of cooperation between aerobic and anaerobic nitrogen metabolism in the deep-sea sedimentary environments.
|
| 巻・号 |
15(11)
|
| ページ |
3087-107
|
| 公開日 |
2013-11-1
|
| DOI |
10.1111/1462-2920.12152
|
| PMID |
23718903
|
| MeSH |
Ammonia / metabolism
Archaea / genetics
Archaea / metabolism*
Bacteria / genetics
Bacteria / metabolism*
Denitrification / genetics*
Geologic Sediments / microbiology*
Molecular Sequence Data
Nitrates / metabolism
Nitrification / genetics*
Nitrogen / metabolism
Oceans and Seas
Oxidation-Reduction
Oxygen / metabolism
Phylogeny
RNA, Ribosomal / genetics
|
| IF |
4.933
|
| 引用数 |
31
|
|
WOS 分野
|
MICROBIOLOGY
|
| リソース情報 |
| 一般微生物 |
JCM10833
JCM20509
JCM20644
JCM20778
JCM21267 |
