T
Tetsuro Ikuta
Researcher at Japan Agency for Marine-Earth Science and Technology
Publications - 19
Citations - 673
Tetsuro Ikuta is an academic researcher from Japan Agency for Marine-Earth Science and Technology. The author has contributed to research in topics: Population & Energy source. The author has an hindex of 8, co-authored 19 publications receiving 416 citations.
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Journal ArticleDOI
Isolation of an archaeon at the prokaryote–eukaryote interface
Hiroyuki Imachi,Masaru K. Nobu,Nozomi Nakahara,Nozomi Nakahara,Nozomi Nakahara,Yuki Morono,Miyuki Ogawara,Yoshihiro Takaki,Yoshinori Takano,Katsuyuki Uematsu,Tetsuro Ikuta,Motoo Ito,Yohei Matsui,Masayuki Miyazaki,Kazuyoshi Murata,Yumi Saito,Sanae Sakai,Chihong Song,Eiji Tasumi,Yuko Yamanaka,Takashi Yamaguchi,Yoichi Kamagata,Hideyuki Tamaki,Ken Takai,Ken Takai +24 more
TL;DR: A hypothetical model for eukaryogenesis is proposed, termed the entangle–engulf–endogenize (also known as E 3 ) model, and isolation and characterization of an Asgard archaeon related to Lokiarchaeota reveals insights into how eukARYotes may have evolved from prokaryotes.
Journal ArticleDOI
Heterogeneous composition of key metabolic gene clusters in a vent mussel symbiont population
Tetsuro Ikuta,Yoshihiro Takaki,Yukiko Nagai,Shigeru Shimamura,Miwako Tsuda,Shinsuke Kawagucci,Yui Aoki,Koji Inoue,Morimi Teruya,Kazuhito Satou,Kuniko Teruya,Makiko Shimoji,Hinako Tamotsu,Takashi Hirano,Tadashi Maruyama,Takao Yoshida +15 more
TL;DR: It is reported that a single-ribotype endosymbiont population in an individual of the host vent mussel, Bathymodiolus septemdierum has heterogeneous genomes with regard to the composition of key metabolic gene clusters for hydrogen oxidation and nitrate reduction.
Posted ContentDOI
Isolation of an archaeon at the prokaryote-eukaryote interface
Hiroyuki Imachi,Masaru K. Nobu,Nozomi Nakahara,Nozomi Nakahara,Yuki Morono,Miyuki Ogawara,Yoshihiro Takaki,Yoshinori Takano,Katsuyuki Uematsu,Tetsuro Ikuta,Motoo Ito,Yohei Matsui,Masayuki Miyazaki,Kazuyoshi Murata,Yumi Saito,Sanae Sakai,Chihong Song,Eiji Tasumi,Yuko Yamanaka,Takashi Yamaguchi,Yoichi Kamagata,Hideyuki Tamaki,Ken Takai +22 more
TL;DR: An “Entangle-Engulf-Enslave (E3) model” for eukaryogenesis through archaea-alphaproteobacteria symbiosis mediated by the physical complexities and metabolic dependency of the hosting archaeon is proposed.
Journal ArticleDOI
Surfing the vegetal pole in a small population: extracellular vertical transmission of an 'intracellular' deep-sea clam symbiont
Tetsuro Ikuta,Kanae Igawa,Kanae Igawa,Akihiro Tame,Tsuneyoshi Kuroiwa,Haruko Kuroiwa,Yui Aoki,Yoshihiro Takaki,Yukiko Nagai,Genki Ozawa,Genki Ozawa,Masahiro Yamamoto,Ryusaku Deguchi,Katsunori Fujikura,Tadashi Maruyama,Takao Yoshida,Takao Yoshida,Takao Yoshida +17 more
TL;DR: This new type of extracellular transovarial transmission provides insights into complex interactions between the host and symbiont, development of both host and Symbiotic bacteria, as well as the population dynamics underlying genetic drift and genome evolution in microorganisms.
Journal ArticleDOI
Genomic Evidence that Methanotrophic Endosymbionts Likely Provide Deep-Sea Bathymodiolus Mussels with a Sterol Intermediate in Cholesterol Biosynthesis.
Kiyotaka Takishita,Yoshihiro Takaki,Yoshito Chikaraishi,Yoshito Chikaraishi,Tetsuro Ikuta,Genki Ozawa,Genki Ozawa,Takao Yoshida,Naohiko Ohkouchi,Katsunori Fujikura +9 more
TL;DR: Findings suggest that this mussel can de novo synthesize cholesterol from methane in cooperation with the symbionts, and the capacity of endosymbionts to synthesize sterols may be important in establishing symbiont–host relationships in these chemosynthetic mussels.