Abundance and distribution of Archaea in the subseafloor sedimentary biosphere.
Abundance and distribution of Archaea in the subseafloor sedimentary biosphere.
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DOI：
10.1038/s41396-018-0253-3
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发表时间：
2019-01
期刊：
影响因子：
--
通讯作者：
Inagaki F
中科院分区：
文献类型：
--
作者：
Hoshino T;Inagaki F
海底沉积环境孕育了数量惊人的微生物，它们分别构成了海洋边缘和公海环流下的厌氧和好氧微生物生态系统。微生物生物量和多样性丰富度一般随沉积物深度和埋藏时间的增加而降低。然而，古生菌在海底沉积生物圈中的贡献和分布一直存在争议。在这里，我们展示了通过科学海洋钻探获得的221个沉积物岩心样品中古细菌和细菌16S rRNA基因的全球定量，这些样品来自不同的海洋环境，使用微流体数字PCR。我们估计古细菌细胞占微生物细胞总数的37.3%（在海洋边缘和开阔海域分别为40.0%和12.8%），相当于地球上的1.1 × 1029个细胞。此外，古细菌16S rRNA基因的相对丰度随着上覆沉积生境的水深而普遍降低，表明古细菌可能对上覆海洋提供的营养物质量和数量更为敏感。
Subseafloor sedimentary environments harbor a remarkable number of microorganisms that constitute anaerobic and aerobic microbial ecosystems beneath the ocean margins and open-ocean gyres, respectively. Microbial biomass and diversity richness generally decrease with increasing sediment depth and burial time. However, there has been a long-standing debate over the contribution and distribution of Archaea in the subseafloor sedimentary biosphere. Here we show the global quantification of archaeal and bacterial 16S rRNA genes in 221 sediment core samples obtained from diverse oceanographic settings through scientific ocean drilling using microfluidic digital PCR. We estimated that archaeal cells constitute 37.3% of the total microbial cells (40.0% and 12.8% in the ocean margin and open-ocean sites, respectively), corresponding to 1.1 × 1029 cells on Earth. In addition, the relative abundance of archaeal 16S rRNA genes generally decreased with the depth of water in the overlying sedimentary habitat, suggesting that Archaea may be more sensitive to nutrient quality and quantity supplied from the overlying ocean.
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影响因子：
13.6
作者：
Ijiri A;Inagaki F;Kubo Y;Adhikari RR;Hattori S;Hoshino T;Imachi H;Kawagucci S;Morono Y;Ohtomo Y;Ono S;Sakai S;Takai K;Toki T;Wang DT;Yoshinaga MY;Arnold GL;Ashi J;Case DH;Feseker T;Hinrichs KU;Ikegawa Y;Ikehara M;Kallmeyer J;Kumagai H;Lever MA;Morita S;Nakamura KI;Nakamura Y;Nishizawa M;Orphan VJ;Røy H;Schmidt F;Tani A;Tanikawa W;Terada T;Tomaru H;Tsuji T;Tsunogai U;Yamaguchi YT;Yoshida N
通讯作者：
Yoshida N
DOI：
10.1073/pnas.1115796109
发表时间：
2012-01-17
影响因子：
11.1
作者：
Schlegel, Katharina;Leone, Vanessa;Mueller, Volker
通讯作者：
Mueller, Volker
影响因子：
56.9
作者：
D'Hondt, S;Jorgensen, BB;Acosta, JLS
通讯作者：
Acosta, JLS
影响因子：
5.2
作者：
Hoshino T;Inagaki F
通讯作者：
Inagaki F
影响因子：
4.2
作者：
Nunoura, Takuro;Soffientino, Bruno;Takai, Ken
通讯作者：
Takai, Ken