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農学部 農学部門海洋生命科学領域 |
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准教授 |
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関連SDGs |
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論文 【 表示 ／ 非表示 】
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Grimontia kaedaensis sp. nov., isolated from the estuary of Kaeda river in Miyazaki, Japan 査読あり
Sakaguchi M., Urbanczyk Y., Kikuchi T., Urbanczyk H.
International Journal of Systematic and Evolutionary Microbiology 73 ( 6 ) 2023年6月
掲載種別：研究論文（学術雑誌） 出版者・発行元：International Journal of Systematic and Evolutionary Microbiology
Strain 020920NT was isolated from the estuary of the Kaeda river in the Miyazaki prefecture in Japan. Phylogenetic analysis based on the 16S rRNA gene showed the strain’s close evolutionary relationship with bacteria from the genus Grimontia, in the family Vibrionaceae. Phenotypic and chemotaxonomic features of the strain were investigated. Whole genome sequencing revealed that the strain 020920NT genome consists of two chromosomes and a plasmid, for a total of 5.52 Mbp. Calculations of whole genome average nucleotide identity and phylogenetic analysis based on the whole genome sequence showed that the strain represents a new species in the genus Grimontia, for which we propose the name Grimontia kaedaensis sp. nov. with the type strain 020920NT (=LMG 32507T=JCM 34978T).
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Tracing genomic divergence of Vibrio bacteria in the Harveyi clade 査読あり
Ke H., Liu D., Ogura Y., Hayashi T., Urbanczyk H., Tsai I.
Journal of Bacteriology 200 ( 15 ) 2018年8月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Journal of Bacteriology
© 2018 American Society for Microbiology. The mechanism of bacterial speciation remains a topic of tremendous interest. To understand the ecological and evolutionary mechanisms of speciation in Vibrio bacteria, we analyzed the genomic dissimilarities between three closely related species in the so-called Harveyi clade of the genus Vibrio, V. campbellii, V. jasicida, and V. hyugaensis. The analysis focused on strains isolated from diverse geographic locations over a long period of time. The results of phylogenetic analyses and calculations of average nucleotide identity (ANI) supported the classification of V. jasicida and V. hyugaensis into two species. These analyses also identified two well-supported clades in V. campbellii; however, strains from both clades were classified as members of the same species. Comparative analyses of the complete genome sequences of representative strains from the three species identified higher syntenic coverage between genomes of V. jasicida and V. hyugaensis than that between the genomes from the two V. campbellii clades. The results from comparative analyses of gene content between bacteria from the three species did not support the hypothesis that gene gain and/or loss contributed to their speciation. We also did not find support for the hypothesis that ecological diversification toward associations with marine animals contributed to the speciation of V. jasicida and V. hyugaensis. Overall, based on the results obtained in this study, we propose that speciation in Harveyi clade species is a result of stochastic diversification of local populations, which was influenced by multiple evolutionary processes, followed by extinction events.
DOI： 10.1128/JB.00001-18
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Genomic evidence that Vibrio inhibens is a heterotypic synonym of Vibrio jasicida. 査読あり
Yoshiko Urbanczyk, Yoshitoshi Ogura, Tetsuya Hayashi, Henryk Urbanczyk
International Journal of Systematic and Evolutionary Microbiology 2016年5月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Urbanczyk Y., Ogura Y., Hayashi T., Urbanczyk H.
Systematic and Applied Microbiology 38 ( 7 ) 2015年10月
記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Systematic and Applied Microbiology
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Description of a novel marine bacterium, Vibrio hyugaensis sp. nov., based on genomic and phenotypic characterization 査読あり
Yoshiko Urbanczyk, Yoshitoshi Ogura, Tetsuya Hayashi, Henryk Urbanczyk
Systematic and Applied Microbiology 2015年4月
記述言語：英語 掲載種別：研究論文（学術雑誌）
書籍等出版物 【 表示 ／ 非表示 】
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Bergey’s Manual of Systematics of Archaea and Bacteria, 1st ed.; Aliivibrio
Henryk Urbanczyk（ 担当： 共著）
John Wiley & Sons, Inc.: Hoboken, NJ, USA, in association with Bergey’s Manual Trust. 2020年
記述言語：英語 著書種別：学術書
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Dunlap P., Urbanczyk H.（ 担当： 共著）
The Prokaryotes: Prokaryotic Physiology and Biochemistry 2013年11月
記述言語：英語 著書種別：学術書
© 2013 Springer-Verlag Berlin Heidelberg. All rights are reserved. Luminous bacteria are those bacteria that carry the lux genes, genes that code for proteins involved in light production. Many luminous bacteria emit light at high, easily visible levels in laboratory culture and in nature, and the phenomenon of light emission has generated interest in these bacteria for over 125 years. Luminous bacteria are especially common in ocean environments where they colonize a variety of habitats, but some species are found in brackish, freshwater, and terrestrial environments. This chapter, which begins with an historical perspective, summarizes current understanding of the biochemistry and genetics of bacterial light emission, the taxonomy and phylogenetics of light-emitting bacteria, the evolutionary origins and hypothesized physiological and ecological functions of bacterial luminescence, the distributions and activities of these bacteria in nature, their symbiotic interactions with animals and especially with marine fishes, and the quorum sensing regulatory circuitry controlling light production at the operon level. This chapter concludes with information on the isolation, cultivation, storage, and identification of luminous bacteria.
MISC 【 表示 ／ 非表示 】
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Phylogeny, genomics, and symbiosis of Photobacterium 招待あり 査読あり
Urbanczyk H., Ast J., Dunlap P.
FEMS Microbiology Reviews 35 ( 2 ) 324 - 342 2011年3月
記述言語：英語 掲載種別：記事・総説・解説・論説等（学術雑誌） 出版者・発行元：FEMS Microbiology Reviews
Photobacterium comprises several species in Vibrionaceae, a large family of Gram-negative, facultatively aerobic, bacteria that commonly associate with marine animals. Members of the genus are widely distributed in the marine environment and occur in seawater, surfaces, and intestines of marine animals, marine sediments and saline lake water, and light organs of fish. Seven Photobacterium species are luminous via the activity of the lux genes, luxCDABEG. Much recent progress has been made on the phylogeny, genomics, and symbiosis of Photobacterium. Phylogenetic analysis demonstrates a robust separation between Photobacterium and its close relatives, Aliivibrio and Vibrio, and reveals the presence of two well-supported clades. Clade 1 contains luminous and symbiotic species and one species with no luminous members, and Clade 2 contains mostly nonluminous species. The genomes of Photobacterium are similar in size, structure, and organization to other members of Vibrionaceae, with two chromosomes of unequal size and multiple rrn operons. Many species of marine fish form bioluminescent symbioses with three Photobacterium species: Photobacterium kishitanii, Photobacterium leiognathi, and Photobacterium mandapamensis. These associations are highly, but not strictly species specific, and they do not exhibit symbiont-host codivergence. Environmental congruence instead of host selection might explain the patterns of symbiont-host affiliation observed from nature. © 2010 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.
講演・口頭発表等 【 表示 ／ 非表示 】
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Speciation in the Harveyi Clade 招待あり 国際会議
Urbanczyk Henryk
ASM Conference on Vibrio2017: The Biology of Vibrios (Chicago, USA) American Society for Microbiology (ASM)
開催年月日： 2017年10月12日 - 2017年10月15日
記述言語：英語 会議種別：口頭発表（招待・特別）
開催地：Chicago, USA
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Systematics of Vibrionaceae Based on Analysis of Genome Sequence Data 国際会議
Henryk Urbanczyk
2016 International Meeting of the Microbiological Society of Korea (MSK) (Gwangju, Korea) Microbiological Society of Korea
開催年月日： 2016年4月20日 - 2016年4月22日
記述言語：英語 会議種別：口頭発表（招待・特別）
開催地：Gwangju, Korea
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Systematics of "Harveyi clade" bacteria (family Vibrionaceae), using evolutionary bioinformatics. 国際会議
Henryk Urbanczyk, Yoshitoshi Ogura, Tetsuya Hayashi
13th Japan-China-Korea Bioinformatics Symposium & Training Course (沖縄県恩納村) NIG-OIST
開催年月日： 2015年8月10日 - 2015年8月12日
記述言語：英語 会議種別：口頭発表（招待・特別）
開催地：沖縄県恩納村
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Interspecies and intraspecies recombination frequencies in the ‘Harveryi clade’ bacteria.
Henryk Urbanczyk, Yoshitoshi Ogura, Tetsuya Hayashi
第48回 腸炎ビブリオシンポジウム (函館市) 腸炎ビブリオシンポジウム
開催年月日： 2014年11月13日 - 2014年11月14日
記述言語：英語 会議種別：口頭発表（一般）
開催地：函館市
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ビブリオ科海洋性細菌の海洋動物との相互作用と進化
Henryk Urbanczyk
第４回 広島大学理学部生物科学同窓会記念講演会 (東広島市) 広島大学
開催年月日： 2013年11月2日
記述言語：英語 会議種別：口頭発表（招待・特別）
開催地：東広島市
受賞 【 表示 ／ 非表示 】
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Excellent Paper Award of the Society for Biotechnology, Japan (SBJ).
2012年1月 Society for Biotechnology, Japan (SBJ)
Urbanczyk H., Noguchi C., Wu H., Watanabe D., Akao T., Takagi H., Shimoi H.
受賞区分：国内外の国際的学術賞 受賞国：日本国
科研費（文科省・学振・厚労省）獲得実績 【 表示 ／ 非表示 】
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The Diversity of Vibrionaceae Bacteria in Coastal Brackish Environments, Their Adaptation to Low-Salinity Environments, and Pathogenic Potential
研究課題/領域番号：25K09744 2025年04月 - 2028年03月
独立行政法人日本学術振興会 科学研究費補助金 多様性生物学および分類学関連
担当区分：研究代表者
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How did marine bacterium Vibrio cholerae adapted to freshwater environment?
研究課題/領域番号：20K07497 2020年04月 - 2023年03月
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(C)
担当区分：研究代表者
その他競争的資金獲得実績 【 表示 ／ 非表示 】
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ビブリオ科細菌種の性質と起源について
2024年07月 - 2025年03月
公益財団法人中辻創智社 2024年度 研究費助成
担当区分：研究代表者
研究・技術シーズ 【 表示 ／ 非表示 】
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ビブリオ科細菌の分類および収集
日本沿岸域のビブリオ科細菌の生態に関する研究
淡水および汽水環境に生育するビブリオ科に関する研究ホームページ： ウルバンチク研究室
技術相談に応じられる関連分野：・ビブリオ科細菌のゲノム解析を基盤とした分類同定
・ビブリオが疑われる魚類病原菌の解析メッセージ：・共同研究の希望テーマ：日本沿岸域のビブリオ科細菌の分布調査
・ビブリオ科細菌を利用した研究開発というニーズがあれば、ぜひご連絡ください。