项目名称: 中国乳牛肝菌属及其两个重要复合群的系统学和生物地理学研究
项目编号: No.31270075
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 生物科学
项目作者: 刘培贵
作者单位: 中国科学院昆明植物研究所
项目金额: 75万元
中文摘要: 乳牛肝菌属(Suillus Gray)是牛肝菌目中系统位置独特,且具有重要生态、经济价值的研究类群。本研究应用现代分类学和分子系统学相结合的研究手段,在对各个形态特征权重的理解和应用上,突破各类群间多变和过渡数量性状所造成的瓶颈,以我国及邻近地区的广义乳牛肝菌属真菌作为主要研究材料,对比全球涉及有关种群的模式或模式产地标本,澄清我国乳牛肝菌属种类组成,揭示地理分布式样及其规律,修订属下分类系统。粘乳牛肝菌复合群和点柄乳牛肝菌复合群具有典型的洲际间断分布式样,按照形态特征分为形态型(morphotypes),筛选标识基因片段建立系统发育树,明确共生树种,揭示两个复合群的物种多样性和物种间及居群间的系统发育关系,探索与共生树种的协同演化关系,阐明与共生树种、海拔高度、经纬度等生物地理要素的关系,分析各物种的地理分布格局及可能成因。探讨乳牛肝菌宿主选择或宿主转移对于物种演化、迁移等事件的影响。
中文关键词: 乳牛肝菌属;分子系统学;生物地理学;宿主共生;起源进化
英文摘要: Suillus is a genus of monophyletic fungi in the family Suillaceae and order Boletales,Basidiomycota. Species in the genus which associated with some coniferous trees have important disquisitive, ecological and economic value. By the modern taxonomy and molecular phylogeny research methods, try to break through the bottle necks of the changeable and continuous quantitative characters on the basis of the understanding of each morphological character in the genus. Clarify the species composition of the genus Suillus in China, reveal geographical regularity, and revised the under genus classification system. The study materials include the type specimens and the specimen in Suillus sensu lato which are from China, the neighborhoods and type localities in the world. The Suillus viscidus-complex and Suillus granulatus-complex have intercontinental disjunction distribution pattens and separated associate with the Larix and Pinus trees, they are the ideal material for the study of phylogenetic and biogeographic relationships. According to the morphological characteristics, divide the species of the complex into different morphotypes; by sifting identifies gene fragments, constructing phylogenetic trees, to reveal the species diversity of the two complexes. To confirm the symbiotic tree species; to expound relationships
英文关键词: the genus Suillus;molecular phylogeny;biogeography;host specificity;evolutionary history