栗疫菌弱毒力特征的传递及其影响因素  

Transmission of dsRNA in Cryphonectria parasitica and it's Affecting Factors

作　　者：王克荣[1] 周而勋[1] 姜爱萍[1] 成桂英[1] 

机构地区：[1]南京农业大学植物病理学系,南京210095

出　　处：《林业科学》2004年第1期185-188,共4页Scientia Silvae Sinicae

基　　金：国家自然科学基金项目资助 (3 0 0 70 494)

摘　　要：dsRNA in Cryphonectria parasitica could be transmitted to progeny through conidia with varying efficiency in culture.Both light and prolonging cultural time could reduce the transmission efficiency,but the effect of light was more efficient.No dsRNA segments were found to be loss after 30 generations subculture,indicating that dsRNA could transmitted stably through subculture.Vegetative incompatibility was a barrier for the transfer of dsRNA from one isolate to another,and hypovirulence conversion reduced as the number of different VC genes between donor and recipient isolates increased.dsRNA in Cryphonectria parasitica could be transmitted to progeny through conidia with varying efficiency in culture.Both light and prolonging cultural time could reduce the transmission efficiency,but the effect of light was more efficient.No dsRNA segments were found to be loss after 30 generations subculture,indicating that dsRNA could transmitted stably through subculture.Vegetative incompatibility was a barrier for the transfer of dsRNA from one isolate to another,and hypovirulence conversion reduced as the number of different VC genes between donor and recipient isolates increased.

关 键 词：栗疫病菌 弱毒力特征 真菌病毒 弱毒力转化 营养体亲和群 

分 类 号：S763.15[农业科学—森林保护学]