Chemical interaction between oak tree and fungal pathogen in Japanese oak wilt

• Project/Area Number: 25292097
• 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: ICHIHARA Yu 国立研究開発法人 森林総合研究所, 関西支所, グループ長 (10353583)
• Co-Investigator(Kenkyū-buntansha): YAMAJI Keiko 筑波大学, 生命環境科学研究科, 准教授 (00420076) ; MASUYA Hayato 国立研究開発法人森林総合研究所, 東北支所, チーム長 (70391183)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000); Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2013: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
• Keywords: 菌類 / 植物 / 林学

Outline of Final Research Achievements

This study was carried out to clarify the chemical interactions between oak trees and fungal pathogen, Raffaelea quercivora in Japanese oak wilt. Five antifungal substances were isolated from Quercus serrata and they were associated with chemical defense against the fungal pathogen. One antifungal substance was also isolated from a resistant oak species. A toxin was isolated from R. quercivora and the amount of the toxin were different among the fungal isolates.

Research Products

• [Presentation] アカガシのナラ菌に対する抗菌物質 (2016)
  • Author(s): 染谷汐織、原若輝、山路恵子、市原優
  • Organizer: 日本生態学会大会
  • Place of Presentation: 仙台国際センター(宮城県仙台市)
  • Year and Date: 2016-03-20
• [Presentation] シラカシに発生した堅果菌核病 (2015)
  • Author(s): 市原優、升屋勇人
  • Organizer: 日本森林学会大会
  • Place of Presentation: 北海道大学（札幌市）
  • Year and Date: 2015-03-26 – 2015-03-28
• [Presentation] コナラ心材抽出物に認められた抗菌物質 (2014)
  • Author(s): 市原優、中島忠一、 升屋勇人、加藤厚
  • Organizer: 日本森林学会大会
  • Place of Presentation: 大宮ソニックシティ（埼玉県）
• [Presentation] ブナ科樹木萎凋病におけるアカガシとマテバシイの防御物質の同定 (2014)
  • Author(s): 原若輝、山路恵子、市原優
  • Organizer: 日本生態学会
  • Place of Presentation: 広島国際会議場（広島県）