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Phylogeography of North American populations of the moss species Hylocomium splendens based on the nucleotide sequence of internal transcribed spacer 2 of nuclear ribosomal DNA
Author(s) -
Chiang T. Y.,
Schaal B. A.
Publication year - 1999
Publication title -
molecular ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.619
H-Index - 225
eISSN - 1365-294X
pISSN - 0962-1083
DOI - 10.1046/j.1365-294x.1999.00668.x
Subject(s) - internal transcribed spacer , biology , moss , monophyly , ribosomal dna , genetic divergence , phylogeography , evolutionary biology , phylogenetic tree , clade , botany , genetics , population , genetic diversity , gene , demography , sociology
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.