首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Two viruses of Heterobasidion confer beneficial,cryptic or detrimental effects to their hosts in different situations
Authors:Rafiqul Hyder  Taina Pennanen  Leena Hamberg  Eeva J Vainio  Tuula Piri  Jarkko Hantula
Institution:Finnish Forest Research Institute, Vantaa Research Unit, P.O. Box 18, 01301 Vantaa, Finland
Abstract:We investigated the effects of two recently described dsRNA mycoviruses, HetRV3-ec1 and HetRV6-ab6, on Heterobasidion wood decay fungi. The viruses originally inhabited Heterobasidion ecrustosum and Heterobasidion abietinum, and were transferred in the laboratory into other Heterobasidion species. Isogenic virus-free and virus-infected Heterobasidion isolates were used to test the effects of these viruses on their hosts' growth rate and competitive ability against mycorrhizal and decay fungi (Paxillus involutus, Meliniomyces bicolor and Phlebiopsis gigantea). This study shows that: (i) a single virus strain confers different effects on different Heterobasidion host strains; and (ii) a single virus strain may have contrasting effects on the fitness of a single host isolate (ranging from no effect to harmful or beneficial) depending on environmental and ecological conditions. We also report for the first time on the antagonism of Helotiales belonging to the sub-group RhizocyphusMeliniomyces against Heterobasidion species.
Keywords:Antagonism  Diversity  dsRNA  Mycorrhiza  Mycovirus
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号