Chemical defense mechanisms of apple fruits against the peach fruit moth, Carposina sasakii

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450068
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plant protection science
• Research Institution: Aomori Prefectural Industrial Technology Research Center
• Principal Investigator: Ishiguri Yoichi 地方独立行政法人青森県産業技術センター, 農林部門, 研究管理員 (80502963)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: リンゴ / モモシンクイガ / 植物－昆虫間相互作用 / 誘導抵抗性

Outline of Final Research Achievements

The peach fruit moth, Carposina sasakii Matsumura, is a serious insect pest of apple fruits, and effective management is urgently required in Japan. This project explored the intrinsic chemical defense mechanisms in apple, and identified 3-oxo-TA, chlorogenic acid, and p-coumaroylquinic acid as defensive chemicals that were induced in young fruits infested with the insects. These defensive compounds were induced to a greater degree in the fruits of the two resistant cultivars, “Fuji” and “Shunmei 21”, in which larval mortality was higher. We also examined the mechanism of the ovipositional deterrent effect of spraying calcium carbonate wettable powder on apple trees. Using EAD and GC-EAD, we found that Txib, a spreading agent in the powder, elicited a clear antennal response in the female moths, which may function as an oviposition inhibitor.

Free Research Field

植物保護科学