It is becoming more important to establish a sustainable society, which depends on renewable resources. Because wood biomass is the most abundant renewable resource, studies of wood formation is the key to improve forest biomass production. In this context, we are involved in analyzing metabolic functions of forest plants and microorganisms from a wide variety of aspects, including organic chemistry, biochemistry, molecular biology, and metabolomics, in order to conduct basic investigations contributing cultivation and protection of forest resources. These projects are conducted in collaboration with Dr. Shiro Suzuki, Institute of Sustainability Science, Kyoto University.