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Ishikawa Prefectural University

Teaching Staff Information

Tomoaki Sakamoto Associate Professor


  • E-mail: sakamoto[at]ishikawa-pu.ac.jp ※Please change [at] to @

Affiliated Departments
Undergraduate Faculty Department of Bioproduction Science Plant Production Group  
Graduate School:
Master’s Degree Course
Division of Bioproduction Science Plant Production Research Field Crop Science
Graduate School:
Doctoral Degree Course
Division of Sciences for Bioproduction and Environment Bioproduction Science Research Field Crop Science

Subjects taught
Undergraduate Faculty Plant Production Science, Industrial Crop Science, Exercises in Biology, Laboratory Work in Plant Production Science I, Exercise for Bioproduction Science, Graduation Thesis
Graduate School:
Master’s Degree Course
Advanced Course of Bioresources and Environmental Sciences I, Regulation in Bioproduction, Seminar on Bioproduction Science II
Academic Societies/Awards/Background
Background Research Fellowship for Young Scientists (DC2), Japan Society for the Promotion of Science
Research Fellowship for Young Scientists (PD), Japan Society for the Promotion of Science
Assistant Professor, Field Production Science Center, The University of Tokyo
Designated Associate Professor, Institute for Advanced Research, Nagoya University
Academic Societies/
The Japanese Society of Plant Physiologists, Japanese Society of Breeding, The Japanese Society for Horticultural Science, The Japanese Society for Chemical Regulation of Plants.

Primary Research
Research Fields Crop Physiology, Plant Molecular Biology
Keywords Phytohormone, Gnene, Protein, Rice, Sweet Potato
Research Topics
  • Function of brassinosteroids on agriculturally important traits

    My main focus in this research program is on the genetic improvement of crop production. One target trait is erect leaves, as this trait has benefits for plants in terms of improved light capture for photosynthesis, nitrogen use for grains, and the possibility of denser plantings with a higher leaf area index, all of which can increase crop yield. Brassinosteroids regulate the angle of upright leaves in rice, and I previously demonstrated that the brassinosteroid-related erect leaf phenotype increases biomass and grain production in rice. Brassinosteroids also enhance various aspects of crop production in rice, such as disease resistance and abiotic stress tolerance. To achieve genetic improvement of crops, I wanted to understand the relationship between brassinosteroids and genetic network regulating these agriculturally important traits.

  • Improvement of sweet potato production

    Sweet potato is an important crop in Ishikawa Prefecture, especially a line derived from cultivar ‘Kokei 14’, grown in sandy fields within the limited area of Kanazawa City. This line is well known throughout Japan as the “Gorojima Kintoki” brand. In contrast, a β-carotene containing orange-flesh cultivar developed in Ishikawa Prefecture, ‘Kenroku’, is expected to be a new special product of Ishikawa Prefecture. In this research program, I wanted to improve yield, quality and shelf stability of these two sweet potato cultivars.

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