The Introgression and Gene Family Contraction Driven the Evolution,Lifestyle and Host Shift of Hypocrealean Fungi
会议名称：《中国菌物学会2016年学术年会》
会议日期：2016年
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学]
关 键 词：phylogenomic evolutionary process introgression lifestyle
摘 要：Hypocrealean fungi（Ascomycota） are well-known for their diverse lifestyles and have vital influences on agriculture and ecosystem,including important phytopathogenic fungi,entomopathogenic fungi,mycoparasites,and grass *** such diverse lifestyles that shift frequently during the evolutionary process have been analyzed by multigene analysis,the phylogeny and mechanisms from phylogenomics remain *** whole genomes from 45 species with diverse lifestyles,we constructed the phytopathogen-basal phylogeny and dated the divergence of each lineage.A new evolutionary process of hypocrealean fungi was proposed:Nectriaceae as plant pathogens is the primitive group,and animal pathogens of Cordycipitaceae,Ophiocordycipitaceae,and Clavicipitaceae were parallel diverged;Hypocreaceae as mycoparasites diverged after Cordycipitaceae;and plant endophytes of Clavicipitaceae were differentiated after the Gramineae originated was *** introgression was detected in certain lineages of hypocrealean fungi and the main genetic resources for the fungi adapting to new lifestyles are shared from the ancestral species through *** the meanwhile,the contraction of gene families is closely related with the transition of lifestyles and main evolutionary *** introgression and gene family contraction are the main factors that drive the evolution,diverse lifestyles,and host shift of hypocrealean fungi.