KEIO RESEARCHERS INFORMATION SYSTEM

Message from the Faculty Member 【 Display / hide 】

Message from the Faculty Member 【 Display / hide 】

• 菌類，特にきのこ類の自然史を主な研究対象としています。きのこは，日々の食卓に彩りを添え，健康増進にも一役買っているなど，私たちの生活に身近な生物です。しかし，地球上には，私たちの想像をはるかに超える数の未知のきのこたちが潜んでおり，その多様性の全貌は明らかではありません。そこで私は，日本や中国東北部など，東アジアを中心とした地域の海浜，里山や亜高山帯・高山帯を主なフィールドとして，野外調査によりきのこ類の標本を収集し，形態的・生態的な特徴および遺伝子の情報をもとに，それらの系統分類や生物地理に関する研究を行っています。きのこやカビなどの菌類の視点から，自然環境の複雑さと，地球上の生物の多様性，そして生物と環境とのつながりを探っていきたいと考えています。ところで，人間社会においても，複雑性・多様性を認め，さまざまな分野とのつながりを保つことはとても大切です。学生の皆さんには，慶應義塾において論理的な思考力や表現力を養い，自らの目指す方向を見つけることを期待するとともに，専門性を磨きつつも幅広い視野を持ち，異なる分野へも積極的にアプローチすることを望みます。

Other Affiliation 【 Display / hide 】

Other Affiliation 【 Display / hide 】

• Keio University, 教養研究センター, 所員

• Keio University, Research and Education Center for Natural Sciences, Deputy Director

Career 【 Display / hide 】

Career 【 Display / hide 】

• 2010.04

  -

  2012.03

  University of Tsukuba, Graduate School of Life and Environmental Sciences, JSPS Research Fellowship for Young Scientists (DC2)

• 2012.04

  -

  2013.03

  Komatsu City Office, Komatsu City Museum, 学芸員

• 2012.08

  -

  2015.03

  Kanazawa University, 医薬保健研究域 保健学系 , 研究協力員

• 2013.04

  -

  2019.03

  Chiba Institute of Science, Faculty of Risk and Crisis Management, Assistant Professor

• 2019.04

  -

  2026.03

  Keio University, Faculty of Economics, Associate Professor

display all >>

Academic Background 【 Display / hide 】

Academic Background 【 Display / hide 】

• 2003.04

  -

  2007.03

  University of Tsukuba, 第二学群, College of Biological Resources

  University, Graduated

• 2007.04

  -

  2009.03

  University of Tsukuba, Graduate School of Life and Environmental Sciences, 博士前期課程　生物資源科学専攻

  University, Completed, Master's course

• 2009.04

  -

  2012.03

  University of Tsukuba, Graduate School of Life and Environmental Sciences, 博士後期課程　生物圏資源科学専攻

  University, Completed, Doctoral course

Academic Degrees 【 Display / hide 】

Academic Degrees 【 Display / hide 】

• Doctor of Agriculture, University of Tsukuba, Coursework, 2012.03

Licenses and Qualifications 【 Display / hide 】

Licenses and Qualifications 【 Display / hide 】

• 学芸員資格, 2012.03

Research Areas 【 Display / hide 】

Research Areas 【 Display / hide 】

• Humanities & Social Sciences / Cultural assets study

• Humanities & Social Sciences / Museology

• Humanities & Social Sciences / Cultural anthropology and folklore

• Environmental Science/Agriculture Science / Plant protection science

• Environmental Science/Agriculture Science / Conservation of biological resources

display all >>

Books 【 Display / hide 】

Books 【 Display / hide 】

• 環境学入門―法学・経済学・自然科学から学ぶ

  青木 淳一, 一ノ瀬 大輔, 小林 宏充, 小島 恵, 山本 雅資, 秋山 豊子, 土居 志織, 林 健太郎, 山崎 友莉子, 林 良信, 糟谷 大河, 坂上 紳, 宮本 佳明, 清家 裕, 慶應義塾大学出版会, 2024.06

  Scope: 第2章第4節 生物多様性の保全と持続的利用を目指して【自然科学②】,  Contact page： 108-120

• Blue data book Ibaraki 2023

  茨城県県民生活環境部環境政策課, 茨城県生物多様性センター, 茨城県県民生活環境部環境政策課 茨城県生物多様性センター, 2023.03,  Page： 173

  Scope: ８ 蘚苔類・藻類・地衣類・菌類,  Contact page： 163-166

• 環境省レッドリスト 日本の絶滅危惧生物図鑑

  Kunio Iwatsuki, Hidetoshi Ota, Taiga Kasuya, Maruzen Publishing, 2022.10

  Scope: アカダマスッポンタケ，コナガエノアカカゴタケ，ヤチヒロヒダタケ

• One hundred selection of Japanese fungi

  日本菌学会編著, 八坂書房, 2020.08,  Page： 111

  Scope: ツチグリ, オニフスベ, ホコリタケ, ウスキキヌガサタケ,  Contact page： 21, 25, 60, 75

• RED DATA BOOK 2020 IBARAKI Bryophytes, Algae, Lichens, Fungi

  糟谷 大河, 茨城県県民生活環境部自然環境課, 2020.03,  Page： 147p

  Scope: Fungi,  Contact page： 110-140

display all >>

Papers 【 Display / hide 】

Papers 【 Display / hide 】

• Supplementary molecular data for Exobasidium sakataniense Hirata (Exobasidiales) and its phylogenetic position

  Hideyuki Nagao, Shuichi Kurogi, Takamichi Orihara, Taiga Kasuya

  Phytotaxa (Magnolia Press)  772   95 - 100 2026.08

  Research paper (scientific journal), Joint Work, Last author, Accepted

  　View Summary

  Exobasidium sakataniense Hirata (1981:62) was described as a new species, but no viable culture has been available. In this study, a culture was isolated from new specimens collected from dry, scab-like spots on old lesions on the leaves and from blight on the lammas shoots of Symplocos theophrastifolia Siebold & Zuccarini (1846:134) on October 20 and 21, 2023 in Kaeda and Inohae valleys, Miyazaki Prefecture, Japan, which are new locations for the records of E. sakataniense, and its phylogenetic position was determined. The analysis confirmed that E. sakataniense belongs to a group of Exobasidium species pathogenic to Symplocos and is closely related to E. siroboe.

• Chilling and frost tolerances of a luminous Mycena species (Agaricales, Basidiomycota) in Northern Japan

  Tamotsu Hoshino, Makoto Hanzaike, Yoko Ando, Minoru Arimoto, Taiga Kasuya

  Problems of Cryobiology and Cryomedicine 36 ( 2 ) 136 - 138 2026.06

  Joint Work, Last author, Accepted

• Attempt to clarify species diversity of the genus Tricholomopsis in Japan based on morphology and phylogeny

  Takashi Maruyama, Taiga Kasuya

  Japanese Journal of Mycology 67   21 - 40 2026.05

  Research paper (scientific journal), Joint Work, Last author, Accepted

  　View Summary

  The genus Tricholomopsis comprises saprotrophic fungi that grow on dead wood. Although six species of Tricholomopsis have been reported in Japan, no phylogenetic analyses based on genomic DNA sequences have been conducted to date. We performed morphological observations and molecular phylogenetic analyses using the internal transcribed spacer (ITS) region of rDNA, the large subunit(LSU), and the transcription elongation factor 1-α (tef1) gene. A total of eighteen Tricholomopsis basidiocarps were collected from Niigata, Ishikawa, Nagano, Ibaraki, and Hokkaido prefectures. Six of Tricholomopsis species were detected, including T. rutilans s. str. and T. decora, along with one previously undescribed species. Three known species were also identified as T. sulphreoides, T. mitirubicunda, and T. depressa. We newly reported three of Tricholomopsis as new to Japan. Our results suggest that the distribution of T. rutilans s. str. in Japan is likely restricted to subalpine to alpine zones, while T. mitirubicunda is widely distributed in lowland areas. We clarified the relationship between T. mitirubicunda and T. rutilans s. str. and also emended the Japanese names of both species and description of Japanese T. rutilans s. str.

  • Access to Document (DOI)

• Mushrooms collected in the Fukiage Gardens of the Imperial Palace, Tokyo

  Kentaro Hosaka, Taiga Kasuya

  Memoirs of the National Museum of Nature and Science  ( 53 ) 107 - 112 2026.03

  Research paper (bulletin of university, research institution), Joint Work, Last author

  　View Summary

  A total of 42 species of mushrooms (Ascomycota and Basidiomycota) were collected in the Fukiage Gardens of the Imperial Palace, Tokyo, and identified to species level during 2021–2022. Approximately 40% of these species have not previously been reported from the
  Gardens. The occurrence of certain species, such as Trichoderma cornu-damae and Favolaschia gelatina, may be attributable to their recent range expansions.

• Rust fungi (Pucciniales) collected at Imperial Palace Garden from 2021 to 2023

  Makoto Kakishima, Izumi Okane, Taiga Kasuya, Yuichi Yamaoka, Kentaro Hosaka, Tsuyoshi Hosoya

  Memoirs of the National Museum of Nature and Science  ( 53 ) 129 - 162 2026.03

  Research paper (bulletin of university, research institution), Joint Work

  　View Summary

  Thirty-three species of rust fungi (Pucciniales) were collected in the Imperial Palace Garden during the survey conducted from 2021 to 2023. Of these, 12 species are newly recorded compared with the previous surveys conducted in 1997–1999 and 2012–2013, which recorded 35 and 29 species, respectively. Seventeen species were confirmed to colonize and survive in the garden, whereas nine species are presumed to have disappeared. The species composition has also changed compared with the earlier surveys. This floristic change in rust fungi is suspected to be a result of continuous changes in environmental conditions and plant growth in the garden.

display all >>

Papers, etc., Registered in KOARA 【 Display / hide 】

Papers, etc., Registered in KOARA 【 Display / hide 】

• The host-pathogen association of Exobasidium in Japan inferred from molecular phylogeny of ITS and large subunit rDNA sequences

  Kasuya, Taiga

  The Hiyoshi review of natural science (慶應義塾大学日吉紀要刊行委員会)   ( 70 ) 1 - 21 2023.09

  ISSN  09117237

• Phylogeny, genetic structure and establishment of conservation process of an endangered plant, Asarum takaoi var. hisauchii, with a disjunctive distribution in Chiba Prefecture

  Kasuya, Taiga

  学事振興資金研究成果実績報告書 (慶應義塾大学)  2023

• Tracing the geographical origin of Ophiocordyceps sinensis by using phylogeographic insights and stable isotope analyses

  Kasuya, Taiga

  学事振興資金研究成果実績報告書 (慶應義塾大学)  2021

• Tracing the geographical origin of Ophiocordyceps sinensis by using phylogeographic insights and stable isotope analyses

  Kasuya, Taiga

  学事振興資金研究成果実績報告書 (慶應義塾大学)  2020

• Dynamics of fungal biodiversity in Japanese wetlands between the last glacial and postglacial periods

  Kasuya, Taiga

  学事振興資金研究成果実績報告書 (慶應義塾大学)  2019

Reviews, Commentaries, etc. 【 Display / hide 】

Reviews, Commentaries, etc. 【 Display / hide 】

• New localities of Gastrosporium gossypinum in Japan

  Taiga Kasuya, Shuichi Kurogi, Shohei Wada, Miyu Ii, Kentaro Hosaka

  Truffology 9 ( 1 ) 25 - 28 2026.03

  Rapid communication, short report, research note, etc. (scientific journal), Joint Work, Lead author

• Considering integrated management for risk and crisis from an all-directional perspective

  Taiga Kasuya

  Journal of Integrated Management for Risk and Crisis 10   1 - 2 2026.03

  Article, review, commentary, editorial, etc. (scientific journal), Single Work, Lead author, Corresponding author

• Swamp deposits south of the Komadori Pond, south face of the Mt. Senmai, central Akaishi Range, central Japan

  Takeyuki Ueki, Taiga Kasuya, Ken-ichi Nonaka, Mayuka Higo

  Bulletin of Teikyo University of Science 22   131 - 136 2026.03

  Rapid communication, short report, research note, etc. (bulletin of university, research institution), Joint Work

• Research on the conservation of the critically endangered Chimaphila umbellata at the southern limit of its global distribution: elucidating its origin and reproductive ecology

  Ito A, Shoji A, Yamato M, Kasuya T, Yukawa T

  Annual Report of Pro Natura Foundation Japan (Pro Natura Foundation Japan)  34   102 - 110 2025.05

  Internal/External technical report, pre-print, etc., Joint Work,  ISSN  2432-0943

  　View Summary

  The population of Chimaphila umbellata, a partially mycorrhizal heterotroph, is rapidly declining in Ibaraki
  Prefecture, Japan, the southern limit of its global distribution, requiring urgent conservation. This study analyzed plant samples from various regions of Japan to investigate the population genetic structure and phylogeny. The results revealed that the southern population is genetically distinct from the northern one and derives from a single ancestral group. In situ seed sowing techniques in Aomori Prefecture showed no fully grown individuals, suggesting unsuitable post-germination conditions. In contrast, in situ seed sowing techniques in Ibaraki showed embryo elongation and branching, indicating a symbiotic relationship with a specific basidiomycete Serendipitaceae during growth. Analysis of the fungal community in the soil indicated that the distribution of Serendipitaceae was limited.

  • Access to Document (DOI)
  • CiNii Research

• Phylogeography of Asarum takaoi var. hisauchii, with a disjunctive distribution in Choshi, Chiba Prefecture

  Taiga Kasuya, Kyoichi Miyahara, Takeshi Kohama, Yuki Ueno, Naoya Iwamoto

  Geoparks and Regional Resources 6 ( 2 ) 125 - 127 2025.03

  Research paper, summary (national, other academic conference), Joint Work, Lead author

display all >>

Presentations 【 Display / hide 】

Presentations 【 Display / hide 】

• The use of hallucinogenic mushrooms and folk practices in Japan: its historical developments

  Taiga Kasuya, Hiroyuki Uchida

  [Domestic presentation]  the 10th Annual Meeting of the Japan Society of One Health Sciences, 

  2026.09

  , 

  Oral presentation (general)

• Isolation of actinomycetes from Tengu-no-Mugimeshi for the discovery of new natural products

  Ryoko Kato, Yoshihiro Watanabe, Taiga Kasuya, Akihiro Sugawara, Yuki Inahashi

  40th Annual Meeting of the Society for Actinomycetes Japan, 

  2026.09

  , 

  Oral presentation (general)

• Public Symposium: Fungi, Flourishing Unnoticed

  Yosuke Degawa, Tsuyoshi Hosoya, Hitoshi Neda, Taiga Kasuya, Akiyoshi Yamada

  [Domestic presentation]  The 70th annual meeting of the Mycological Society of Japan, 

  2026.05

  , 

  Symposium, workshop panel (nominated)

• An undescribed species of Mycena discovered under Machilus thunbergii trees during the winter season

  Taiga Kasuya, Takashi Maruyama, Shuichi Kurogi, Shohei Wada, Kentaro Hosaka

  The 70th annual meeting of the Mycological Society of Japan, 

  2026.05

  , 

  Oral presentation (general)

• Food culture of Psathyrellaceae in West Africa and the Caribbean

  Kentaro Hosaka, Taiga Kasuya, Takako Kudo, Masataka Tanaka, Olyvia G. Fadeyi, Nourou S. Yorou

  The 70th annual meeting of the Mycological Society of Japan, 

  2026.05

  , 

  Oral presentation (general)

display all >>

Research Projects of Competitive Funds, etc. 【 Display / hide 】

Research Projects of Competitive Funds, etc. 【 Display / hide 】

• 今まさに消えつつある，日本の野生きのこ食文化の実態解明：分類学と民族菌類学の融合

  2026.04

  -

  2029.03

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research (KAKENHI), Research grant, Principal investigator

• きのこと人のグローバルな繋がり ―ハイチの食用きのこdjon djonの文化菌類学的研究

  2026.04

  -

  2027.03

  AJINOMOTO Foundation of Dietary Culture, 公益財団法人 味の素食の文化センター 2025年度 食の文化研究助成 , Taiga Kasuya, Research grant, Principal investigator

• きのこと人のグローバルな繋がり―ハイチの食用きのこ "djondjon" の文化菌類学的研究

  2025.04

  -

  2030.03

  日本学術振興会, 科学研究費助成事業 基盤研究(B), Coinvestigator(s)

• Exploring the origins of ponds formed on linear depressions in the Southern AIps region and succession history of those mycobiota and diatom flora

  2024.05

  -

  2025.03

  Shizuoka Prefecture, 令和6年度南アルプス学会研究助成 , Taiga Kasuya, Takeyuki Ueki, Kenichi Nonaka, Research grant, Principal investigator

• 最終氷期から現在に至る，日本の湿原の菌類多様性変遷史

  2023.04

  -

  2026.03

  Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), No Setting

display all >>

Awards 【 Display / hide 】

Awards 【 Display / hide 】

• 特選塾員

  Taiga Kasuya, 2024.05, 慶應義塾

  Type of Award： Keio commendation etc.

• 日本植生史学会第35回大会優秀発表賞

  Kikuchi T, Momohara A, Abe Y, Kasuya T, 2020.11, Japanese Association of Historical Botany, 前期更新世クロサイワイタケ科（Xylariaceae）菌類化石の形態分類と古環境指標としての有用性

  Type of Award： Award from Japanese society, conference, symposium, etc.

• Incentive Award of MSJ

  Taiga Kasuya, 2018.05, Mycological Society of Japan

  Type of Award： Award from Japanese society, conference, symposium, etc.

• 筑波大学 学長表彰

  Taiga Kasuya, 2012.03, University of Tsukuba

  Type of Award： Other

• 大学院第一種奨学金における特に優れた業績による返還免除（全額免除）

  Taiga Kasuya, 2009.05, 独立行政法人日本学生支援機構

  Type of Award： Other

display all >>

Courses Taught 【 Display / hide 】

Courses Taught 【 Display / hide 】

• GENERAL EDUCATION SEMINAR B

  2026

• INDEPENDENT RESEARCH PROJECT A

  2026

• GENERAL EDUCATION SEMINAR A

  2026

• BIOLOGY 1

  2026

• BIOLOGY 2

  2026

display all >>

Academic Activities 【 Display / hide 】

Academic Activities 【 Display / hide 】

• 銚子ジオパーク推進協議会 保全部会委員

  銚子ジオパーク推進協議会, 

  2024.07

  -

  Present

• 茨城における外来種対策検討委員会委員

  茨城県環境政策課, 

  2020.08

  -

  2023.03

• 銚子ジオパーク推進協議会 保全部会委員

  銚子ジオパーク推進協議会, 

  2018.06

  -

  2019.03

• 茨城県レッドリスト(非維管束植物・菌類・藻類)検討委員会委員

  Ibaraki Prefectural Government, 

  2018.02

  -

  2020.03

• 村花スカシユリ増殖事業実行委員会アドバイザー

  茨城県那珂郡東海村教育委員会生涯学習課, 

  2017

  -

  Present

display all >>

Memberships in Academic Societies 【 Display / hide 】

Memberships in Academic Societies 【 Display / hide 】

• Japanese Association of Historical Botany, 

  2020.10

  -

  Present

• 日本第四紀学会, 

  2018.04

  -

  Present

• 日本ワンヘルスサイエンス学会, 

  2017

  -

  Present

• 総合危機管理学会, 

  2016.04

  -

  Present

• 日本植物分類学会, 

  2011.04

  -

  Present

display all >>

Committee Experiences 【 Display / hide 】

Committee Experiences 【 Display / hide 】

• 2026.09

  -

  Present

  理事, the Japan Society of One Health Sciences

• 2026.06

  -

  Present

  理事, Society of Integrated Management for Risk and Crisis

• 2025.04

  -

  Present

  日本菌学会 理事（会計担当）, Mycological Society of Japan

• 2023.06

  -

  Present

  常務委員, Society of Integrated Management for Risk and Crisis

• 2019.05

  -

  2023.04

  日本菌学会 理事（国内集会担当）, Mycological Society of Japan

display all >>