Multilocus sequence data reveal extensive phylogenetic species diversity within the Neurospora discreta complex
Multilocus sequence data reveal extensive phylogenetic species diversity within the Neurospora discreta complex
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DOI：
10.1080/15572536.2006.11832678
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发表时间：
2006-05
期刊：
影响因子：
2.8
通讯作者：
Jeremy R. Dettman;D. Jacobson;John W. Taylor
中科院分区：
文献类型：
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作者：
Jeremy R. Dettman;D. Jacobson;John W. Taylor
以前的观察形态，生殖和遗传变异表明，离散脉孢菌，目前限制，可能代表了一个多样化的复杂的多个物种。为了研究这一假设，我们研究了73个传统上被鉴定为N。离散的从物种的形态、生态和地理范围内选择菌株。从三个不连锁的核基因座获得序列数据，并将系统发育物种识别应用于数据集，使用已被证明是可靠的用于识别独立谱系和描绘脉孢菌属物种的协议。结果表明，目前的N.离散包括至少八个独立的系统发育物种。这项研究还揭示了丰富的以前未被识别的遗传多样性属内，种间进化关系的特点，并有助于更全面地了解脉孢菌属的物种多样性。
Previous observations of morphological, reproductive and genetic variation have suggested that Neurospora discreta, as presently circumscribed, might represent a diverse complex of multiple species. To investigate this hypothesis we examined the phylogenetic relationships among 73 fungal strains traditionally identified as N. discreta. Strains were chosen from across the morphological, ecological and geographical ranges of the species. Sequence data were obtained from three unlinked nuclear loci, and phylogenetic species recognition was applied to the dataset using protocols that have been shown to be reliable for identifying independent lineages and delineating species of Neurospora. The results demonstrate that the present circumscription of N. discreta includes at least eight separate phylogenetic species. This research also reveals an abundance of previously unrecognized genetic diversity within the genus, characterizes the interspecific evolutionary relationships and contributes to a fuller understanding of species diversity in Neurospora.