Examining the ecological, biological, and genetic characteristics of Phellinus noxius, a causal agent of brown root disease, to identify a way that it can be controlled

2015 Fiscal Year Final Research Report

• Project/Area Number: 25292096
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Forestry and Forest Products Research Institute
• Principal Investigator: OTA YUKO 国立研究開発法人 森林総合研究所, 森林微生物研究領域, チーム長 (60343802)
• Co-Investigator(Kenkyū-buntansha): Hattori Tsutomu 国立研究開発法人森林総合研究所, 森林微生物研究領域, 室長 (00353813) ; Sahashi Norio 国立研究開発法人森林総合研究所, 森林微生物研究領域, チーム長 (10202102) ; Akiba Mitsuteru 国立研究開発法人森林総合研究所, 森林微生物研究領域, 主任研究員 (50353553)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 根株腐朽病 / シマサルノコシカケ / 小笠原

Outline of Final Research Achievements

Phellinus noxius is a pathogenic fungus that causes brown root disease in a variety of tree species, in both tropical and subtropical regions. We investigated the ecological and biological characteristics of this fungus, as well as the genetic differentiation and spatial structure of its population. Brown root disease is widely distributed throughout the Bonin Islands. We recorded 41 plant species from 29 plant families. These included 15 species that were endemic to the Ogasawara Islands as host species. The vegetation suggested relating with the occurrence of the disease. High polymorphism of microsatellite loci of this fungus suggested that the Japanese populations were either indigenous or introduced a very long time ago. The clone distribution in the research area on the island of Chichijima indicated infection via both basidiospores and root-to-root contact in the Bonin Islands.

Free Research Field

森林病理学