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Title: Microbial diversity in sediments from the bottom of the challenger deep, the mariana trench
Authors: Takuro Nunoura
Manabu Nishizawa
Miho Hirai
Shigeru Shimamura
Phurt Harnvoravongchai
Osamu Koide
Yuki Morono
Toshiaki Fukui
Fumio Inagaki
Junichi Miyazaki
Yoshihiro Takaki
Ken Takai
Tokyo Institute of Technology
Mahidol University
Japan Agency for Marine-Earth Science and Technology
Japan Agency for Marine-Earth Science Technology (JAMSTEC)
Keywords: Agricultural and Biological Sciences
Issue Date: 1-Jan-2018
Citation: Microbes and Environments. Vol.33, No.2 (2018), 186-194
Abstract: © 2018, Japanese Society of Microbial Ecology. All rights reserved. The Challenger Deep is the deepest ocean on Earth. The present study investigated microbial community structures and geochemical cycles associated with the trench bottom sediments of the Challenger Deep, the Mariana Trench. The SSU rRNA gene communities found in trench bottom sediments were dominated by the bacteria Chloroflexi (SAR202 and other lineages), Bacteroidetes, Planctomycetes, “Ca. Marinimicrobia” (SAR406), and Gemmatimonadetes and by the archaeal α subgroup of MGI Thaumarchaeota and “Ca. Woesearchaeota” (Deep-sea Hydrothermal Vent Euryarchaeotic Group 6). The SSU rRNA gene sequencing analysis indicated that the dominant populations of the thaumarchaeal α group in hadal water and sediments were similar to each other at the species or genus level. In addition, the co-occurrence of nitrification and denitrification was revealed by the combination of pore water geochemical analyses and quantitative PCR for nitrifiers.
ISSN: 13474405
Appears in Collections:Scopus 2018

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