Tsutomu Tsuchida, PhD
Assistant Professor, Toyama University (2011-present)
RIKEN Special Postdoctoral Researcher (2008-2010)
JSPS Fellow (2005-2007)

  
Photos
Tsuchida; the pea aphid Acyrthosiphon pisum; the vetch aphid Megoura crassicauda.

Projects
† Characterization and functional analysis of endosymbiotic bacteria involved in plant specialization of host insects.
† Diversity of facultative endosymbiotic bacteria in aphid natural populations.

Personal website
http://ttsymbiosis.web.fc2.com/english.html

Publications

Simon J.-C., Boutin S., Tsuchida T., Koga R., Le Gallic J.-F., Frantz A., Outreman Y., Fukatsu T. (2011) Facultative symbiont infections affect aphid reproduction. PLoS One 6: e21831.

Tsuchida T., Koga R., Matsumoto S., Fukatsu T. (2011) Interspecific symbiont transfection confers a novel ecological trait to the recipient insect. Biology Letters 7: 245-248.

Tsuchida T., Koga R., Horikawa M., Tsunoda T., Maoka T., Matsumoto S., Simon J.-C., Fukatsu T. (2010) Symbiotic bacterium modifies aphid body color. Science 303: 1102-1104.

Koga R., Tsuchida T., Fukatsu T. (2009) Quenching autofluorescence of insect tissues for in situ detecton of endosymbionts. Applied Entomology and Zoology 44: 281-291.

Koga R., Tsuchida T., Sakurai M., Fukatsu T. (2007) Selective elimination of aphid endosymbionts: effects of antibiotic dose and host genotype, and fitness consequences. FEMS Microbiology Ecology 60: 229-239.



Simon J.-C., Sakurai M., Bonhomme J., Tsuchida T., Koga R., Fukatsu T. (2007) Elimination of a specialized facultative symbiont does not affect the reproductive mode of its aphid host. Ecological Entomology 32: 296-301.



Tsuchida T., Koga R., Sakurai M., Fukatsu T. (2006) Facultative bacterial endosymbionts of three aphid species, Aphis craccivora, Megoura crassicauda and Acyrthosiphon pisum, sympatrically found on the same host plants. Applied Entomology and Zoology 41: 129-137.



Sakurai M., Koga R., Tsuchida T., Meng X.-Y., Fukatsu T. (2005) Rickettsia symbiont of the pea aphid Acyrthosiphon pisum: novel cellular tropism, effect on the host fitness, and interaction with the essential symbiont Buchnera. Applied and Environmental Microbiology 71: 4069-4075.



Tsuchida T., Koga R., Meng X. Y., Matsumoto T., Fukatsu T. (2005) Characterization of a facultative endosymbiotic bacterium from the pea aphid Acyrthosiphon pisum. Microbial Ecology 49: 126-133.



Tsuchida T., Koga R., Fukatsu T. (2004) Host plant specialization governed by facultative symbiont. Science 303: 1989-1989.



Koga R., Tsuchida T., Fukatsu T. (2003) Changing partners in an obligate symbiosis: a facultative endosymbiont can compensate for loss of the essential endosymbiont Buchnera in an aphid. Proceedings of the Royal Society of London Series B 270: 2543-2550.



Tsuchida T., Koga R., Shibao H., Matsumoto T., Fukatsu T. (2002) Diversity and geographic distribution of secondary symbiotic bacteria in natural populations of the pea aphid Acyrthosiphon pisum. Molecular Ecology 11: 2123-2135.



Fukatsu T., Tsuchida T., Nikoh N., Koga R. (2001) Spiroplasma symbiont of the pea aphid Acyrthosiphon pisum (Insecta: Homoptera). Applied and Environmental Microbiology 67: 1284-1291.



Tsuchida T., Koga R., Fukatsu T. (2008) Endosymbiont that broadens food plant range of host insect. In: Insect Symbiosis Volume 3 (eds. K. Bourtzis and T. A. Miller), pp. 123-141. CRC Press, Boca Raton, USA

Fukatsu T., Tsuchida T., Sakurai M., Koga R. (2004) Diversity and biological functions of facultative symbiotic bacteria in aphids: ecological significance of invisible associates. In: Innovative Roles of Biological Resource Centers. Proceedings of the Tenth International Congress for Culture Collections (eds. by M. M. Watanabe, K. Suzuki & T. Seki), pp. 117-120. Japan Society for Culture Collections & World Federation for Culture Collections. 



Tsuchida T., Koga R., Matsumoto T., Fukatsu T. (2004) Secondary endosymbiotic microbiota of the pea aphid, Acyrthosiphon pisum, in natural populations. In: Aphids in a New Millennium. Proceedings of the Sixth International Symposium on Aphids (eds. by J.-C. Simon, C. A. Dedryver, C. Rispe & M. Hulle), pp. 93-96. Versailles, INRA Editions.



Koga R., Tsuchida T., Fukatsu T. (2004) Presence of a secondary endosymbiotic bacterium suppresses growth, development and cell number of the host aphid. In: Aphids in a New Millennium. Proceedings of the Sixth International Symposium on Aphids (eds. by J.-C. Simon, C. A. Dedryver, C. Rispe & M. Hulle), pp. 61-64. Versailles, INRA Editions.