Phylogeny of the Botryosphaeriaceae reveals patterns of host association
Phylogeny of the Botryosphaeriaceae reveals patterns of host association
复制标题
DOI：
10.1016/j.ympev.2007.08.016
复制
发表时间：
2008-01-01
影响因子：
4.1
通讯作者：
Wingfield, Michael J.
中科院分区：
文献类型：
--
作者：
De Wet, Juanita;Slippers, Bernard;Wingfield, Michael J.
葡萄座腔菌科的三个无性型属，即双胞菌属、毛双胞菌属和多硫菌属具有典型的深色卵形孢子和厚壁，因此难以彼此区分。这些属是众所周知的病原体，尤其是松树物种。我们产生了一个多基因谱系，以解决系统发育关系的葡萄座腔菌科与黑暗的分生孢子无性型，并映射主机协会的基础上，这一系统发育。多基因系谱分离的双倍体，Lasiodiplodia和Dothiorella和它揭示了趋势的主机协会的模式。扩大数据集，以包括更多的谱系的葡萄座腔菌科，并包括所有菌株从不同的主机物种的ITS序列数据是可用的。结果表明，双胞藻主要分布在裸子植物上，裸子植物和被子植物上均有少量种类。毛二孢属（Lasiodiplodia）的种类在裸子植物和被子植物上分布均匀，多硫孢属（Dothiorella）的种类仅在被子植物上分布，新丛孢属（Neofusicoccum）的种类主要在被子植物上分布，在南半球裸子植物上的报道较少。葡萄座腔菌属（Botryosphaeria）具有梭孢属（Fusicoccum）无性型，主要分布于被子植物上，裸子植物上的报道较少。祖先状态重建表明，一个假定的祖先Botryosphaeriaceae最有可能演变的被子植物。另一个有趣的观察是，在所有的谱系的葡萄座腔菌科，观察到的主机通才和专业的物种，与主机相关的共同进化的证据很少。(C)2007年爱思唯尔公司All rights reserved.
Three anamorph genera of the Botryosphaeriaceae namely Diplodia, Lasiodiplodia and Dothiorella have typically dark, ovoid conidia with thick walls, and are consequently difficult to distinguish from each other. These genera are well-known pathogens of especially pine species. We generated a multiple gene genealogy to resolve the phylogenetic relationships of Botryosphaeriaceae with dark conidial anamorphs, and mapped host associations based on this phylogeny. The multiple gene genealogy separated Diplodia, Lasiodiplodia and Dothiorella and it revealed trends in the patterns of host association. The data set was expanded to include more lineages of the Botryosphaeriaceae, and included all isolates from different host species for which ITS sequence data are available. Results indicate that Diplodia species occur mainly on gymnosperms, with a few species on both gymnosperms and angiosperms. Lasiodiplodia species occur equally on both gymnosperms and angiosperms, Dothiorella species are restricted to angiosperms and Neofusicoccum species occur mainly on angiosperms with rare reports on Southern Hemisphere gymnosperms. Botryosphaeria species with Fusicoccum anamorphs occur mostly on angiosperms with rare reports on gymnosperms. Ancestral state reconstruction suggests that a putative ancestor of the Botryosphaeriaceae most likely evolved on the angiosperms. Another interesting observation was that both host generalist and specialist species were observed in all the lineages of the Botryosphaeriaceae, with little evidence of host associated co-evolution. (C) 2007 Elsevier Inc. All rights reserved.