2013 Fiscal Year Final Research Report

Bark endophytic fungi as the agent for acquired defense on their host trees.

Research Project

Project/Area Number	23658134
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	Forest science
Research Institution	Forestry and Forest Products Research Institute
Principal Investigator	MASUYA Hayato 独立行政法人森林総合研究所, 東北支所, チーム長 (70391183)
Co-Investigator(Kenkyū-buntansha)	ICHIHARA Yu 森林総合研究所, 関西支所, グループ長 (10353583) SAHASHI Norio 森林総合研究所, 森林微生物研究領域, 領域長 (10202102)
Project Period (FY)	2011 – 2013
Keywords	Diaporthe / Colpoma / Xylaria / 抗菌物質 / 胴枯病 / 多様性
Research Abstract	Bark endophytic fungi were isolated from twigs of <i>Pinus densiflorae</i>, Quercus serrata, Quercus crispula and Fagus crenata in four different localities. Their species composition was quite different among wood species and localities. Dominant order of the endophyte was Diaporthales which is known as the agents of tree canker diseases. Diaportalean species with weak virulence appeared to infect without symptoms on the host trees. At a part of the localities, Rhytismatalean species with strong anti-fungal compound was dominant, and seems to inhibit other fungal infection. This species may be a useful candidate for giving acquired defense on the host trees. This knowledge can develop new method for biological control for tree disease, particularly infectious canker disease on twigs.