Hiro Imachi
@hiro-imachi.bsky.social
đ€ 190
đ„ 93
đ 20
Microbe Hunter
Wow, our AEM paper on a new methane-oxidizing bacterium just got a Commentary! đ Congrats Kambara-sanâso happy to see the work getting recognized!
journals.asm.org/doi/10.1128/...
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Expansion of aerobic methanotrophy to the phylum of Actinomycetota and its environmental implications | Applied and Environmental Microbiology
The climate crisis is one of the most imminent threats to humanity and all life on our planet. Methane is not only the second most potent greenhouse gas (GHG) and is responsible for approximately 31% of GHG-induced global warming since the start of the industrial revolution (1) but is also the most rapid increasing GHG in the atmosphere (2). The latter is likely caused by increased microbiological production of methane from, e.g., wetlands (2). This fact stresses the importance of methanotrophic microbes that can degrade methane with and without oxygen (3, 4) and thereby fulfill a crucial role in our global climate.
https://journals.asm.org/doi/10.1128/aem.01334-25
6 days ago
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âIsolation of a new methanotroph belonging to Mycobacteriumâ is now out! Awesome work by my former postdoc Hiromi Kambara, who led this project all the way.
journals.asm.org/doi/10.1128/...
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First isolation of a methanotrophic Mycobacterium reveals ammonia- and pH-tolerant methane oxidation | Applied and Environmental Microbiology
Methane is a significant contributor to climate change (27 times more potent as a greenhouse gas than carbon dioxide), and the largest biological sink is methane-oxidizing bacteria: methanotrophs. Alt...
https://journals.asm.org/doi/10.1128/aem.00796-25
about 2 months ago
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Would you like to work with us? At JAMSTEC, we are recruiting postdoctoral researchers through the Young Research Fellow program. This program allows fellows to independently pursue their own research projects.
www.jamstec.go.jp/recruit/e/jy...
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JAMSTEC Young Research Fellow (JYRF) | JAMSTEC - JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
JAMSTEC Young Research Fellow (JYRF)
https://www.jamstec.go.jp/recruit/e/jyrf/application-guidelines.html
4 months ago
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reposted by
Hiro Imachi
Ryo Harada
5 months ago
New paper out! We discovered a tiny archaeon with the smallest known archaeal genome â only 238 kbp! Candidatus Sukunaarchaeum mirabile has almost no recognizable metabolic pathways and may rely heavily on a host to survive. It also represents a novel, deep-branching lineage in the archaeal tree.
add a skeleton here at some point
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reposted by
Hiro Imachi
STCmicrobeblog
5 months ago
schaechter.asmblog.org/schaechter/2...
#MicroSky
#Archaea
#ArchaeaSky
#SymbioSky
add a skeleton here at some point
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reposted by
Hiro Imachi
STCmicrobeblog
5 months ago
schaechter.asmblog.org/schaechter/2...
#MicroSky
#Archaea
#ArchaeaSky
#SymbioSky
add a skeleton here at some point
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The genomic information for our strains, which belong to the âHodarchaeales', has been released. Due to a large-scale server replacement at DDBJ (DNA Database of Japan), the release has been delayed.
5 months ago
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reposted by
Hiro Imachi
Masaru Nobu
7 months ago
New isolates from eukaryote's closest archaeal relative: âHodarchaealesâ!! Syntrophic microaerotolerant peptide-degrading anaerobic archaea w/ simple cell structure & protrusions. Features conserved across the phylum provide new insight into our ancestorâs biology!
www.biorxiv.org/content/10.1...
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Eukaryotes' closest relatives are internally simple syntrophic archaea
Eukaryotes are theorized to have originated from an archaeal phylum Promethearchaeota (formerly 'Asgard' archaea)1,2. The first cultured representatives revealed valuable insight3,4 but are distantly ...
https://www.biorxiv.org/content/10.1101/2025.02.26.640444v1
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Isolated in just 3 years! (previously, 12 years). We obtained two strains from 'Hodarchaeales', proposed to be closest to our archaeal ancestor. Our analysis suggests the ancestor was an anaerobic, syntrophic, peptidotrophic, archaeon with a simple intracellular structure and possible aerotolerance.
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Eukaryotes' closest relatives are internally simple syntrophic archaea
Eukaryotes are theorized to have originated from an archaeal phylum Promethearchaeota (formerly 'Asgard' archaea)1,2. The first cultured representatives revealed valuable insight3,4 but are distantly ...
https://www.biorxiv.org/content/10.1101/2025.02.26.640444v1
7 months ago
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New bacterial phylum Minisyncoccota (formerly Ca. Patescibacteria or CPR) in the kingdom Bacillati. Congratulations, Kuroda-san, Narihiro-san, and Nobu (
@masarunobu.bsky.social
)!
www.microbiologyresearch.org/content/jour...
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Minisyncoccus archaeiphilus gen. nov., sp. nov., a mesophilic, obligate parasitic bacterium and proposal of Minisyncoccaceae fam. nov., Minisyncoccales ord. nov., Minisyncoccia class. nov. and Minisyn...
In the domain Bacteria, one of the largest, most diverse and environmentally ubiquitous phylogenetic groups, Candidatus Patescibacteria (also known as candidate phyla radiation/CPR), remains poorly ch...
https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.006668#
7 months ago
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Methanol syntrophy! A new form of syntrophic relationship between bacteria and archaea in the underground. Congratulations, Huang-san and Nobu!
add a skeleton here at some point
8 months ago
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Why did an engineer become a researcher in biological evolution? My esteemed research partner, colleague, and friend, Masaru K. Nobu, is sharing some side stories about strain MK-D1 research.
www.nature.com/articles/s41...
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Engineering history with Asgard archaea of the kingdom Promethearchaeati - Nature Microbiology
Multiple histories converge in Masaru Nobuâs story of culturing an archaeon closely related to us eukaryotes.
https://www.nature.com/articles/s41564-024-01866-9
10 months ago
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