Current Affiliation Organization 【 display / non-display 】

Current Affiliation Organization 【 display / non-display 】

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• Fundamental study on use of the cellulolytic systems in termites for bioenergy bioconversion

• Exploration of cellulase genes and functions in invertebrates

• Cellylolytic systems in termites

Published Papers 【 display / non-display 】

Published Papers 【 display / non-display 】

• Termites and subsocial roaches inherited many bacterial-borne carbohydrate-active enzymes (CAZymes) from their common ancestor

  Beránková, T., Arora, J., Arias, J. R., Buček, A., Tokuda, G., Šobotník, J., Hellemans, S., Bourguignon, T.

  Communications Biology   7 - 1449   2024.11 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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    DOI

• Unveiling lignocellulolytic potential: a genomic exploration of bacterial lineages within the termite gut

  Salgado, J.F.M., Hervé, V., Vera, M.A.G., Tokuda, G., Brune, A.

  Microbiome   12 - 201   2024.10 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Genomic data provide insights into the classification of extant termites

  Hellemans, S., Rocha, M.M., Wang, M., Arias, J.R., Aanen, D.K., Bagnères, A.-G., Buček, A., Carrijo, T.F., Chouvenc, T., Cuezzo, C., J Constantini, J.P., Constantino, R., Dedeine, F., Deligne, J., Eggleton, P., Evans, T.A., Josens, G., Hanus, R., Harrison, M., Harry, M., Jones, G., Jouault, C., Kalleshwaraswamy, C.M., Kaymak, E., Korb, J., Lee, C.-Y., Legendre, F., Li, H.-F., Lo, N., Lu, T., Matsuura, K., Maekawa, K., McMahon, D., Mizumoto, N., Oliveira, D.E., Poulsen, M., Arias, J.R., Sillam-Dussès, D., Su, N.-Y., Tokuda, G., Vargo, E., Ware, J.L., Šobotník, J., Scheffrahn, R.H., Cancello, E., Roisin, Y., Engel, M.S., Bourguignon, T.

  Nature Communications   15 ( 1 ) 6724   2024.08 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Redescription of Melibe japonica (Nudibranchia: Dendronotoidea: Tethydidae) and its phylogenetic relationship in the genus

  Nakano, R., Tokuda, G., Yorifuji, M.

  Molluscan Research ( Taylor & Francis )  44 ( 3 ) 267 - 277   2024.07 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Reevaluating Symbiotic Digestion in Cockroaches: Unveiling the Hindgut’s Contribution to Digestion in Wood-Feeding Panesthiinae (Blaberidae)

  Melbert Schwarz, Gaku Tokuda, Haruka Osaki, Aram Mikaelyan

  Insects   14 ( 9 ) 768 - 768   2023.09 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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Books 【 display / non-display 】

Books 【 display / non-display 】

• Physiology of the Formosan subterranean termite, with special reference to wood degradation and metabolism

  Gaku Tokuda, Shuji Itakura, Nathan Lo ( Part: Allotment Writing )

  CABI  2023.12

• Evolution and function of endogenous termite cellulases

  Lo, N., Tokuda, G., & Watanabe, H. ( Part: Multiple Authorship )

  Springer  2011.01

• Fluorometric detection of nitric oxide with diaminofluoresceins (DAFs): applications and limitations for plant NO research

  Arita, N. O., Cohen, M. F., Tokuda, G., ( Part: Multiple Authorship )

  その他の出版機関  2006.03

Other Papers 【 display / non-display 】

Other Papers 【 display / non-display 】

• Re-classification ofthe symbiotic protist fauna in the hindgut of Coptotermes formosanus

  Gaku Tokuda, Gillian Gile

  Termite Journal ( Japan Termite Control Association )  177 ( 1 ) 46 - 48   2022.01

   

• Embryonic dynamics and symbiotic organ formation in lygaeoid bugs (Heteroptera: Lygaeoidea)

  Kuechler S.M, Tokuda G, Fukatsu T, Matsuura Y

  Gordon Research Conference - 2019 Animal-Microbe Symbioses     2019.06

   

• Cellulose metabolism in termites

  TOKUDA Gaku

  Termite Journal   163 ( 1 ) 1 - 6   2015.01

   

• Celluloytic systems in insects

  Watanabe, H., Tokuda, G.

  Annual Review of Entomology ( Annual Reviews )  55   609 - 632   2010  [Refereed]

   

• Termites as Functional Gene Resources

  Matsui T., Tokuda G., Shinzato N.

  Recent Patents on Biotechnology ( その他の出版社 )  3 ( 1 ) 10 - 18   2009.01

   

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Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Metabolomic profiles in the hindguts of the wood-feeding cockroaches collected from East Asia and North America

  Tokuda, G., Kihara, K., Kitade, O., Fukuda, S.

  XXVI International Congress of Entomology (ICE2022)  (Helsinki)  2022.07  -  2022.07 

• Relationship between microbial structure and metabolic activities in the termite, Neotermes sugioi.

  Tokuda, G., Sekine, R.

  XIX International Congress of IUSSI (IUSSI2022)  (San Diego, CA)  2022.07  -  2022.07 

• A division of labor between termites and the gut symbionts for lignocellulose degradation.

  Tokuda, G.

  OIST Mini Symposium “Ecology and Evolution of Termite Gut Microbes”  (Okinawa)  2019.12  -  2019.12 

• Sprirochaetes contribute to xylan degradation in the hindgut of wood-feeding higher termites

  40) Tokuda, G., Mikaelyan, A., Fukui, C., Matsuura, Y., Watanabe, H., Fujishima, M., Brune, A.

  The 17th International Symposium on Microbial Ecology  (Leipzig)  2018.08  -  2018.08 

• Transition of symbiotic lifestyles by gene loss or gain: Blattabacterium in cockroaches-lower termites and spirochetes in higher termites

  Tokuda, G.

  Max Planck Institute Seminar Series in Molecular, Cellular, and Environmental Microbiology  (Marburg)  2018.08  -  2018.08 

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Academic Awards 【 display / non-display 】

Academic Awards 【 display / non-display 】

• Zoological Science Award '98

  1998.10   Zoological Society of Japan  

Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Reliving termite evolution through experimental replacement of gut microorganisms

  Challenging research (development)

  Project Year: 2023.06  -  2027.03 

  Investigator(s): Gaku Tokuda  Member: Thomas Bourguignon, Nobuaki Mizumoto

  Direct: 19,400,000 (YEN)  Overheads: 5,820,000 (YEN)  Total: 25,220,000 (YEN)

• Integrative analyses of endogenous enzymes involved in wood digestion in termites

  Grant-in-Aid for Scientific Research(B)

  Project Year: 2022.04  -  2026.03 

  Investigator(s): TOKUDA Gaku  Member: WATANABE Hirofumi

  Direct: 13,300,000 (YEN)  Overheads: 3,990,000 (YEN)  Total: 17,290,000 (YEN)

• Evolutionary and developmental basis of host-symbiont interactions in seed bugs

  Grant-in-Aid for JSPS Fellows

  Project Year: 2017.11  -  2020.03 

  Direct: 2,300,000 (YEN)  Overheads: 2,300,000 (YEN)  Total: 0 (YEN)

• Grant-in-Aid for Scientific Research(A)

  Project Year: 2017.04  -  2022.03 

  Direct: 27,800,000 (YEN)  Overheads: 8,340,000 (YEN)  Total: 36,140,000 (YEN)

• Exploration of lignocellulolytic enzymes on the surface of bacterial cell walls in the gut of termites using monoclonal antibodies

  Grant-in-Aid for challenging Exploratory Research

  Project Year: 2015.04  -  2018.03 

  Investigator(s): TOKUDA Gaku  Member: FUJISHIMA Masahiro, MIKAELYAN Aram, BRUNE Andreas

  Direct: 2,900,000 (YEN)  Overheads: 870,000 (YEN)  Total: 3,770,000 (YEN)

  　View Summary

  In this study, we attempted to identify bacteria that produce major lignocellulolytic enzymes in the hindgut of higher termites, with the aid of production of monoclonal antibodies against proteins on the surface of bacterial community associated with wood particles using the wood-feeding termite, Nasutitermes takasagoensis. We successfully obtained 15 different monoclonal antibodies, while the screening against the predominantly expressed xylanase in the wood fiber-associated bacterial community identified one monoclonal antibody cross-reacting the xylanase. Indirect fluorescence microscopy using epifluorescence and confocal laser-scanning microscopes indicated that this antibody recognized the entire cell surface of some helical bacteria associated with the wood-fibers in the hindgut. These antibodies are among valuable property for future studies on bacterial symbiosis in termites.

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• 2022.04

  　

  　

  

• 2021.09