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Molecular phylogeny of the Nectria haematococca-Fusarium solani species complex

机译：Nectria haematococca-Fusarium solani种复合物的分子系统发育

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摘要

Phylogenetic relationships and biogeography of die phytopathogenic Nectria haematococca-Fusarium solani species complex, section Martiella of Fusarium, were inferred from sequence data from the nuclear large subunit 285 rDNA, the nuclear ribosomal internal transcribed spacer (ITS) region and translation elongation factor (EF-la) gene introns and exons. Although a partition homogeneity test detected significant incongruence between the 288 rDNA and ITS datasets, results of the nonparametric Wilcoxon signed-ranks Templeton test indicated that the data could be combined. Maximum parsimony analysis of the combined dataset identified 26 phylogenetically distinct ingroup species, of which 15 are heterothallic,7 are homothallic and 4 are putatively mitosporic. Included among these were 9 formae speciales described for F: solani which were all resolved as phylogenetically distinct species by the molecular phylogeny. Of these, F solani f. sp, cucurbitae races 1 and 2 appear to represent reproductively isolated biological species with independent evolutionary origins. Results of the molecular phylogeny also provide strong support for clades within New Zealand, South America, Africa and India-Sri Lanka. The complex historical biogeography of this complex appears to reflect vicariant events associated with the fragmentation of Gondwanaland, possible gondwanic range expansions together with relatively recent distributional changes in these fungi associated with movement of economically important plants. [References: 91]
机译：从核大亚基285 rDNA，核糖体内部转录间隔区（ITS）区域和翻译延伸因子（EF- la）基因内含子和外显子。尽管分区同质性测试在288个rDNA和ITS数据集之间检测到显着不一致，但是非参数Wilcoxon符号秩检验Templeton测试的结果表明可以将数据进行组合。组合数据集的最大简约分析确定了26个系统发育上不同的同族物种，其中15种为杂种，7种为同种，4种为子孢子。其中包括描述为F：solani的9种形态科，它们都通过分子系统发育被解析为系统发育上独特的物种。其中，F solani f。 sp，葫芦科第1和第2族似乎代表具有独立进化起源的生殖分离生物物种。分子系统发育的结果也为新西兰，南美，非洲和印度-斯里兰卡的进化枝提供了有力的支持。该复合体的复杂历史生物地理学似乎反映了与冈瓦纳大陆破碎相关的维多利亚时代事件，可能的冈瓦纳山脉范围扩展以及这些真菌中与经济上重要的植物相关的相对较新的分布变化。 [参考：91]

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