Amano Lab officially established at Hokkaido University
We are pleased to announce the establishment of the Amano Laboratory at the Graduate School of Science, Hokkaido University. Our laboratory specializes in microbial oceanography …
Chie Amano
Associate Professor
Chie Amano is a marine microbial ecologist studying the role of bacteria and archaea in the ocean’s biogeochemical cycles, with a focus on the dark, deep ocean. Her research addresses both sides of the carbon cycle: the heterotrophic degradation of organic matter, including by particle-associated communities, and dark inorganic carbon fixation through anaplerotic and chemolithoautotrophic processes. She also examines how hydrostatic pressure shapes microbial activity and carbon cycling in the deep sea, and she develops single-cell approaches such as BONCAT and microautoradiography, together with in situ instrumentation, to quantify microbial activity in the deep ocean.
Single-cell heterotrophic activity in deep-ocean prokaryotic communities quantified by BONCAT and microautoradiography
Prokaryotes play a central role in marine biogeochemical cycles, yet quantifying their activity requires sensitive methods, particularly in the deep ocean where their biomass and …
Major contribution of particle‐associated microbes to deep‐sea organic carbon degradation
The biological carbon pump mediates the export of particulate organic carbon from the euphotic zone to the deep ocean, where it provides the base of the food web. Although deep‐sea …
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Microbial diagenesis of dissolved organic matter from the ocean’s surface to abyssal depths: a case study in the Humboldt upwelling system
Marine dissolved organic matter (DOM) represents one of Earth’s largest dynamic carbon pools—comparable in scale to atmospheric CO₂. Primarily derived from phytoplankton production …
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Comparison of picolyl azide-based BONCAT and microautoradiography for assessing the heterotrophic prokaryotic activity in the deep ocean
Prokaryotes play a central role in marine biogeochemical cycles, yet quantifying their activity requires sensitive methods due to low biomass and metabolic rates, particularly in …
Anaplerotic processes are key contributors to dark carbon fixation in the ocean
Abstract Anaplerotic carbon fixation is ubiquitous in heterotrophic organisms including those inhabiting the ocean1. Despite its prevalence, the drivers of this process and its …
Metaproteomic analysis decodes trophic interactions of microorganisms in the dark ocean
Proteins in the open ocean represent a significant source of organic matter, and their profiles reflect the metabolic activities of marine microorganisms. Here, by analyzing …
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Substrate uptake patterns shape niche separation in marine prokaryotic microbiome
Marine heterotrophic prokaryotes primarily take up ambient substrates using transporters. The patterns of transporters targeting particular substrates shape the ecological role of …
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Bacterial degradation of ctenophore Mnemiopsis leidyi organic matter
Jellyfish blooms are increasingly becoming a recurring seasonal event in marine ecosystems, characterized by a rapid build-up of gelatinous biomass that collapses rapidly. Although …
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