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

2014 Fiscal Year Final Research Report

• 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
• 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

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.

Free Research Field

森林生態学