Professor Takakazu Kaneko

Area and Subject Taught Bioinformatics
Research Theme(s) Genomics of plant-related microbes
Academic Degrees Ph. D. (Science) , Nagoya University
Keywords for Research Field Genome, Symbiosis, Endophyte, Rhizobia
Office Phone Number 81-75-705-1701

Research Overview

Diversified microorganisms are able to colonize the intercellular, and sometimes also intracellular, spaces of plant tissues, without causing apparent damage to the host plant. Bacterial endophytes and rhizobia have been isolated from several tissues in numerous plant species. Many bacterial strains have beneficial effects on plant growth and health. Some beneficial strains of them are studied in terms of the molecular mechanisms of establishment inside plants and their functions well. We reported the full genome sequences of such bacteria, Mesorhizobium loti, Bradyrhizobium japonicum, and Azospirillum sp. B510. The genomic information provided valuable insights into the life of the bacteria, including information about interactions with host plants. We examine the nucleotide sequences of the other related endophytic bacterial strains genomes and deduce the symbiotic functional gene repertoire in their genomes. Comparative genomics of naturally occurring plant-associated bacteria have a potential for providing information that can be used to develop enhanced plant-microbe interaction.

Notable Publications and Works in the Last Three Years

  1. Hijacking of leguminous nodulation signaling by the rhizobial type III secretion system. Okazaki S, Kaneko T, Sato S, Saeki K: Proc. Natl. Acad. Sci. U S A. 2013; 110: 17131-17136.
  2. The type III Secretion System of Bradyrhizobium japonicum USDA122 mediates symbiotic incompatibility with Rj2 soybean plants. Tsukui T, Eda S, Kaneko T, Sato S, Okazaki S, Kakizaki-Chiba K, Itakura M, Mitsui H, Yamashita A, Terasawa K, Minamisawa K. Appl Environ Microbiol. 2013; 79: 1048-1051.
  3. Commonalities and differences among symbiosis islands of three Mesorhizobium loti strains. Kasai-Maita H, Hirakawa H, Nakamura Y, Kaneko T, Miki K, Maruya J, Okazaki S, Tabata S, Saeki K, Sato S: Microbes Environ. 2013; 28: 275-278.