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  1. No Access

    Article

    Corallococcus caeni sp. nov., a novel myxobacterium isolated from activated sludge

    Two myxobacterial strains (KH5-1T and NO1) were isolated from the activated sludge tanks treating municipal sewage wastewater in Japan. These strains were recognised as myxobacteria based on their phenotypic char...

    Shun Tomita, Ryosuke Nakai, Kyohei Kuroda, Hazuki Kurashita in Archives of Microbiology (2024)

  2. Article

    Open Access

    Temporal and fertilizer-dependent dynamics of soil bacterial communities in buckwheat fields under long-term management

    This study integrated bacterial community and soil chemicals to characterize the soil ecosystem in an open upland field managed by six controlled fertilizer programs using the minimum amount of pesticides. Amp...

    Susumu Morigasaki, Motomu Matsui, Iwao Ohtsu, Yuki Doi, Yusuke Kawano in Scientific Reports (2024)

  3. No Access

    Article

    Novel aerobic anoxygenic phototrophic bacterium Jannaschia pagri sp. nov., isolated from seawater around a fish farm

    The genus Jannaschia is one of the representatives of aerobic anoxygenic phototrophic (AAP) bacteria, which is a strictly aerobic bacterium, producing a photosynthetic pigment bacteriochlorophyll (BChl) a. Howeve...

    Koyo Kuwata, Yuki Sato-Takabe, Ryosuke Nakai, Yuya Sugimura in Antonie van Leeuwenhoek (2024)

  4. Article

    Open Access

    Microbiomic Analysis of Bacteria Associated with Rock Tripe Lichens from Alpine Areas in Eastern Alps and Equatorial Africa

    The diversity of bacteria associated with alpine lichens was profiled. Lichen samples belonging to the Umbilicariaceae family, commonly known as rock tripe lichens, were gathered from two distinct alpine fellfiel...

    Zichen He, Takeshi Naganuma, Ryosuke Nakai, Jun Uetake in Current Microbiology (2024)

  5. No Access

    Article

    Survival Outcomes of Two-Stage Intracardiac Repair in Large Ventricular Septal Defect and Trisomy 18

    Surgical management has not been encouraged in patients with trisomy 18 (T18) and congenital heart diseases due to poor survival. This study aimed to investigate (1) the appropriateness of palliative surgeries...

    Ryosuke Nakai, Tao Fujioka, Kenichi Okamura, Toshihiko Suzuki in Pediatric Cardiology (2021)

  6. No Access

    Chapter

    Patterns of Microorganisms Inhabiting Antarctic Freshwater Lakes with Special Reference to Aquatic Moss Pillars

    The Antarctic continent has ice-free areas with many freshwater lakes that support life. These lakes are generally ultra-oligotrophic and possess simplified food chains dominated by microorganisms with algal a...

    Ryosuke Nakai, Satoshi Imura in The Ecological Role of Micro-organisms in … (2019)

  7. Article

    Open Access

    Genome sequence and overview of Oligoflexus tunisiensis Shr3T in the eighth class Oligoflexia of the phylum Proteobacteria

    Oligoflexus tunisiensis Shr3T is the first strain described in the newest (eighth) class Oligoflexia of the phylum Proteobacteria. This strain was isolated from the 0.2-μm filtrate of a s...

    Ryosuke Nakai, Takatomo Fujisawa, Yasukazu Nakamura in Standards in Genomic Sciences (2016)

  8. No Access

    Article

    Production of an antibacterial substance by Bacillus mojavensis strain F412 isolated from a Myanmar shrimp product fermented with boiled rice

    An antibacterial-substance-producing bacterium, namely, strain F412, was isolated from a traditional Myanmar shrimp product fermented with boiled rice. It was a gram-positive, spore-forming, and rod-shaped bac...

    Nant Kay Thwe Moe, Su Myo Thwe, Kousuke Suzuki, Ryosuke Nakai in Fisheries Science (2015)

  9. No Access

    Chapter

    Diversity and Ecology of Thraustochytrid Protists in the Marine Environment

    Thraustochytrids are heterotrophic estuarine/marine protists belonging to the class Labyrinthulomycetes within the stramenopile lineage. Thraustochytrid protists have been a neglected agent of the microbial fo...

    Ryosuke Nakai, Takeshi Naganuma in Marine Protists (2015)

  10. Article

    Open Access

    Diversity of RuBisCO gene responsible for CO2 fixation in an Antarctic moss pillar

    Antarctic “moss pillars” are lake-bottom biocenoses that are primarily comprised of aquatic mosses. The pillars consist of distinct redox-affected sections: oxidative exteriors and reductive interiors. Batteri...

    Ryosuke Nakai, Takashi Abe, Tomoya Baba, Satoshi Imura, Hiroshi Kagoshima in Polar Biology (2012)

  11. Article

    Open Access

    Eukaryotic phylotypes in aquatic moss pillars inhabiting a freshwater lake in East Antarctica, based on 18S rRNA gene analysis

    Aquatic mosses of Leptobryum species form unique tower-like pillars of vegetation termed “moss pillars” in Antarctic lakes. Moss pillars have distinct redox-affected sections: oxidative exteriors and reductive in...

    Ryosuke Nakai, Takashi Abe, Tomoya Baba, Satoshi Imura, Hiroshi Kagoshima in Polar Biology (2012)

  12. Article

    Open Access

    Microflorae of aquatic moss pillars in a freshwater lake, East Antarctica, based on fatty acid and 16S rRNA gene analyses

    Aquatic mosses in the genera Bryum and Leptobryum form unique tower-like “moss pillars” underwater in some Antarctic lakes, in association with algae and cyanobacteria. These are communities with a two-layer stru...

    Ryosuke Nakai, Takashi Abe, Tomoya Baba, Satoshi Imura, Hiroshi Kagoshima in Polar Biology (2012)

  13. No Access

    Article

    Metagenomic Analysis of 0.2-μm-Passable Microorganisms in Deep-Sea Hydrothermal Fluid

    We pyrosequenced the bulk DNA extracted from microorganisms that passed through 0.2-μm-pore-size filters and trapped by 0.1-μm-pore-size filters in the hydrothermal fluid of the Mariana Trough. Using the 454-F...

    Ryosuke Nakai, Takashi Abe, Haruko Takeyama, Takeshi Naganuma in Marine Biotechnology (2011)

  14. Article

    Exhaustive exercise reduces TNF-α and IFN-α production in response to R-848 via toll-like receptor 7 in mice

    Stressful exercise results in temporary immune depression. However, the impact of exercise on the immune responses via toll-like receptor (TLR) 7, which recognizes the common viral genomic feature, single-stra...

    Hiromi Yano, Masataka Uchida, Ryosuke Nakai in European Journal of Applied Physiology (2010)