The difference between sexual and asexual Dioscorea japonica offsprings of resistence aginst virus

Research Project

Project/Area Number	23580212
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Forest science
Research Institution	Akita Prefectural University
Principal Investigator	INOUE MIZUKI 秋田県立大学, 生物資源科学部, 助教 (80432342)
Co-Investigator(Kenkyū-buntansha)	FUJI Shinichi 秋田県立大学, 生物資源科学部, 准教授 (40315601)
Project Period (FY)	2011-04-28 – 2015-03-31
Project Status	Completed (Fiscal Year 2014)
Budget Amount *help	¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000) Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000) Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000) Fiscal Year 2011: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords	垂直感染経路 / 水平感染経路 / ウイルス / ヤマノイモ / 遺伝的多様性 / アブラムシ / バイオマス / 水平伝搬経路 / 垂直伝搬経路 / クローナル植物 / 共進化 / 葉 / ムカゴ / ヤマノイモえぞモザイクウイルス / ヤマノイモモザイクウイルス / 病原体＝赤の女王モデル
Outline of Final Research Achievements	The pathogen-red-queen hypothesis was rejected in this field study because infection rate of CYNMV and JYMV did not negatively correlate with genetic diversity of Dioscorea japonica. Virus such as CYNMV and JYMV were inactivated in 30 minitues after Aphids sucked virus-infected leaves. It suggest that infection rate depnds on the density of Dioscorea japonica individuals. When Diocorea japonica were infected by JYMV, they did not show negative effect on resource allocation in underground organs compared to that of non-infected D. japonica.