Phylogeography of North American populations of the moss species Hylocomium sylendens based on the nucleotide sequence of internal transcribed spacer 2 of nuclear ribosomal DNA
Phylogeography of North American populations of the moss species Hylocomium sylendens based on the nucleotide sequence of internal transcribed spacer 2 of nuclear ribosomal DNA
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DOI：
10.1046/j.1365-294x.1999.00668.x
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发表时间：
1999-06-01
影响因子：
4.9
通讯作者：
Schaal, BA
中科院分区：
文献类型：
--
作者：
Chiang, TY;Schaal, BA
对北美10个不同居群的一串红的核核糖体DNA（nrDNA）内转录序列2（ITS 2）区的序列变异进行了研究。支序分析支持这种苔藓的单系性，植根于Hyatriiastrum和Neodolichomitra。三个地理为基础的组（五大湖森林，阿巴拉契亚山脉，太平洋西北部）确定的最小跨度网络。在北美的三个地理区域之间检测到显着的遗传分化（F-ST = 0.197 - 0.390）。虽然H. splendens，这些结果并不表明足够的分歧指定兄弟物种。
Sequence variation of the internal transcribed sequence 2 (ITS2) region of nuclear ribosomal DNA (nrDNA) was investigated in 10 North American populations of Hylocomium splendens. Cladistic analyses supported the monophyly of this moss species, rooted at Hylocomiastrum and Neodolichomitra. Three geographically based groups (Great Lakes Forest, Appalachian Mountains, and Pacific Northwest) were identified by a minimum spanning network. Significant genetic differentiation was detected (F-ST = 0.197 - 0.390) among three geographical regions in North America. Although high genetic divergence exists within H. splendens, these results do not suggest sufficient divergence for designating sibling species.