Jun HIDEMA Professor

Jun HIDEMA
Professor

Researchmap

• Chiba University Institute for Advanced Academic Research / Graduate School of Horticulture

• Keywords

  Plant, Stress Responses, ultraviolet radiation, DNA damage and repair, autophagy, Spaceflight experiment, Space breeding technology

• Professional Memberships

  Japanese Society for Biological Sciences in Space, The Japanese Society of Plant Physiologists, The Botanical Society of Japan, The Japanese Radiation Research Society, The Photobiology Association of Japan

Research Theme

Research on complex stress response of plants in extraterrestrial environments and establishment of plant breeding technology

Abstract

The establishment of technology for growing plants, which are the source of oxygen and food, in an extraterrestrial environment is indispensable for the long-term stay and habitation in space that humans are planning today. The extraterrestrial environment is a stressful environment with a gravity environment different from that on the ground, and various environments such as cosmic radiation, solar particle radiation (ultraviolet radiation), temperature, and moisture are very different from each other. In such an environment, can plants that have adapted and evolved in a 1G environment on the ground live normally? We have been analyzing the response and tolerance mechanisms to various environmental stresses such as ultraviolet light, radiation, and temperature using various plant materials such as rice, Arabidopsis, and mosses on the ground and at the International Space Station experimental facility.

As a result, it has been found that microgravity environment is also a stress environment for plants, and that other stresses such as ultraviolet radiation under microgravity environment cause greater disturbance than in 1G environment on the ground. Based on our past research achievements, we are currently conducting research on the elucidation of complex environmental stress responses and tolerance molecular mechanisms in the space environment, with the goal of establishing plant breeding technology in extraterrestrial environments.