South Florida microfungi: Castanedospora, a new genus to accommodate Sporidesmium pachyanthicola (Capnodiales, Ascomycota)

IF 1.8 4区 生物学 Q3 MYCOLOGY
G. Delgado, A. Miller, M. Piepenbring
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引用次数: 5

Abstract

Abstract The taxonomic status and phylogenetic placement of Sporidesmium pachyanthicola in Capnodiales (Dothideomycetes) are revisited based on a specimen collected on the petiole of a dead leaf of Sabal palmetto in south Florida, U.S.A. New evidence inferred from phylogenetic analyses of nuclear ribosomal DNA sequence data together with a broad taxon sampling at family level suggest that the fungus is a member of Extremaceae and therefore its previous placement within the broadly defined Teratosphaeriaceae was not supported. A new genus Castanedospora is introduced to accommodate this species on the basis of its distinct morphology and phylogenetic position distant from Sporidesmiaceae sensu stricto in Sordariomycetes. The holotype material from Cuba was found to be exhausted and the Florida specimen, which agrees well with the original description, is selected as epitype. The fungus produced considerably long cylindrical to narrowly obclavate conidia in culture strongly resembling those of Sporidesmajora pennsylvaniensis, another sporidesmium-like, capnodiaceous anamorph. However, phylogenetic analyses show that they are not congeneric and the latter belongs to the family Phaeothecoidiellaceae.
南佛罗里达微真菌:Castanedospora,一个容纳pachyanthicola孢子囊菌的新属
摘要以美国佛罗里达州南部Sabal棕榈死叶叶柄标本为基础,重新研究了厚壁菌孢子菌在Capnodiales (dothideomycates)中的分类地位和系统发育位置。从核糖体DNA序列数据的系统发育分析以及在科水平上广泛的分类群抽样中推断出的新证据表明,该真菌是极端科的成员,因此它之前被广泛定义为Teratosphaeriaceae的位置不被支持。根据Castanedospora在Sordariomycetes中的独特形态和远离Sporidesmiaceae sensu stricto的系统发育位置,引入了一个新属Castanedospora来容纳该物种。发现来自古巴的全模材料已经耗尽,佛罗里达的标本与原始描述非常吻合,被选为上型。这种真菌在培养过程中产生了相当长的圆柱形到窄倒卵形分生孢子,与另一种孢子样的capnodious变形菌Sporidesmajora pennsylvania分生孢子非常相似。然而,系统发育分析表明它们不是同源的,后者属于phaeotheecoidiellaceae科。
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来源期刊
Cryptogamie Mycologie
Cryptogamie Mycologie 生物-真菌学
CiteScore
3.70
自引率
0.00%
发文量
6
审稿时长
12 months
期刊介绍: Cryptogamie is divided into three sections, each published as an individual publication: Cryptogamie, Bryologie, Cryptogamie, Algologie and Cryptogamie, Mycologie. Cryptogamie is a French journal of international scope publishing in several European languages. It accepts original papers and review articles on the systematics, biology and ecology of all cryptogams (algae; bryophytes; fungi and lichens, respectively).
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