HASHIMOTO Yasushi Associate Professor

ThemeThe ecology of plants and associated fungi, including mycorrhizal and endophytic fungi in natural and agricultural ecosystems.

My DreamConnect understanding of fungal ecology to ecosystems conservation
Field Forest ecology, Mycology, Fungal ecology
Keyword Fungi, Mushroom, Forest, Symbiosis, Mycorrhiza, Endophytic fungi


This lab conducts ecological research on fungi (molds and mushrooms) that inhabit the roots and leaves of plants. Mycorrhizae, which are bacteria that engage in symbiosis with plants, are essential to the growth of new plants in various ecosystems. In many cases, fungi are thought to wait—in the form of spores or the like—for a new plant to establish itself in the soil. If suitable fungi aren't found in a given place, the plant can't grow there. I investigate the following: the relationships between plants and fungi in coastal, riparian and forest disturbance sites; the forest floors of mature forests; areas of artificial disturbance; and areas of abandoned cultivation. I try to clarify the relationships between plants and bacteria in various ecosystems by detecting the bacteria in soil in order to identify the bacterial species with DNA analysis and by conducting co-cultivation experiments using microbial isolates and aseptic seedlings.

Mycorrhizas are mutualisms formed between plants roots and fungi
Ectomycorrhizal fungi in the Spruce forest

List of current research topics

  • Interaction between the forest floor herbaceous plants and mycorrhizal fungi connecting roots of trees.
  • The role of symbiotic fungi in regeneration of subarctic coniferous forests.
  • Role of symbiotic fungi of trees growing in wetlands
  • Ecology of the decomposing fungi under snow cover.
Academic degree Ph.D
License High School Specialized Teacher's License (Agriculture), High School First-class Teacher's License (Science)
Self introduction

I'm interested in the ecology of forests, with a focus on the symbiosis that occurs between mycorrhizae (mushrooms and molds) and trees. Forest plants and fungi have excellent relationships. These organisms make effective use of each other, and my curiosity for this research subject is unflagging. Despite being from Yokohama, I prefer the natural splendor of Hokkaido to the urban environment, and I enjoy life in Obihiro in every season.

Room addressGeneral Research Bilding 2
Mail address yhashi atmark obihiro.ac.jp


Research Department/Department of Agro-environmental Science/Division of Ecology and Environmental Science/Section of Ecology and Environmental Science
Related industries Foresty science
Affiliated academic society The Mycological Society of Japan, The Japanese Forest Society, The Ecological Society of Japan
Academic background BS, Department of Agriculture, Gifu University 1991
MS, Department of Agriculture, Gifu University 1993
Ph.D., United Graduate School of Agricultural Science, Gifu University 1999
Senior Lecturer, River Basin Research Center, Gifu University 1999-2000
Assistant Professor, Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine 2000-2010
Associate Professor, Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine 2010-Present