KASUGA Jun Associate Professor

My DreamUnderstanding of freezing resistance mechanisms of boreal trees

ThemeWinter freezing adaptation mechanism of plants


Plant physiology, Plant ecophysiology


Tree, Birch, Wine grape, Potato, Stress, Temperature, Water, Freezing, Acclimation, Omics, Protein, Tissue culture

Instructable research topic for doctoral thesis

  • 栽培植物の環境ストレス耐性機構の解明




Academic degree Ph.D.
Self introduction

I was born in Ibaraki Prefecture. Since I like to see and try unusual foods, I browse local supermarkets whenever I travel on business.

Room addressGeneral Research Building I
Mail address jkasuga atmark obihiro.ac.jp


Research Center for Global Agromedicine/Department of Agriculture and Animal ScienceResearch Department/Department of Agro-environmental Science/Division of Plant Production Science/Section of Plant Production Science


I conduct research on plant physiology in topics closely related to Hokkaido and Obihiro, such as the cultivation of potatoes, which are a major crop of the Tokachi region, and the freezing tolerance of plants that grow in cold environments like that of Hokkaido. I place particular focus on the cold resistance of trees in cold regions and have presented new knowledge, such as the existence of a component that accelerates the supercooling of water in xylem parenchymatous cells, which can maintain water in cells in liquid form without freezing even at temperatures as low as -30°C. In recent years, I've been studying the cold resistance of grapes for wine making (the grapes' production has been increasing in Tokachi). It is generally said that the winter buds of grapes are the most susceptible to frost damage. Although supercooling occurs in winter buds at sub-zero temperatures, its mechanism remains largely unknown. I hope to contribute to regional crop cultivation through basic research.

Sampling of birch twigs in winter

List of current research topics

  • Freezing adaptation mechanisms of wine grapes
  • Freezing-deacclimation mechanisms of boreal trees
  • Comparative proteomic analysis of frost-susceptible cultivated and frost-tolerant wild potatoes
Related industries Plant breeding, Caltivation technique
Affiliated academic society The Japanese Society of Plant Physiologists, Japanese Society for Cryobiology and Cryotechnology, Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists
Academic background 2007-2009 Postdoctoral Fellow, Faculty of Agriculture, Hokkaido University
2009-2010 Postdoctoral Fellow, UMR-PIAF, Institut National de la Recherche Agronomique, France
2010-2013 JSPS Postdoctoral Fellow, Cryobiofrontier Research Center, Iwate University
2013-2014 Postdoctoral Fellow, Faculty of Agriculture, Ehime University
2014-present Assistant Professor, Obihiro University of Agriculture and Veterinary Medicine