دورية أكاديمية
Evidence for range stasis during the latter Pleistocene for the Atlantic Coastal Plain endemic genus, Pyxidanthera Michaux.
| العنوان: | Evidence for range stasis during the latter Pleistocene for the Atlantic Coastal Plain endemic genus, Pyxidanthera Michaux. |
|---|---|
| المؤلفون: | Wall WA; Department of Plant Biology, Box 7612, North Carolina State University, Raleigh, NC 27695, USAUS Army Corps of Engineers, Engineer Research and Development Center, PO Box 9005, Champaign, IL 61826, USA., Douglas NA, Xiang QY, Hoffmann WA, Wentworth TR, Hohmann MG |
| المصدر: | Molecular ecology [Mol Ecol] 2010 Oct; Vol. 19 (19), pp. 4302-14. Date of Electronic Publication: 2010 Sep 06. |
| نوع المنشور: | Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: Blackwell Scientific Publications Country of Publication: England NLM ID: 9214478 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1365-294X (Electronic) Linking ISSN: 09621083 NLM ISO Abbreviation: Mol Ecol Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Oxford, UK : Blackwell Scientific Publications, c1992- |
| مواضيع طبية MeSH: | Genetic Variation* , Genetics, Population*, Magnoliopsida/*genetics, Alleles ; Amplified Fragment Length Polymorphism Analysis ; DNA, Chloroplast/genetics ; Haplotypes ; Magnoliopsida/anatomy & histology ; Molecular Sequence Data ; Phylogeography ; Sequence Analysis, DNA |
| مستخلص: | The general phylogeographical paradigm for eastern North America (ENA) is that many plant and animal species retreated into southern refugia during the last glacial period, then expanded northward after the last glacial maximum (LGM). However, some taxa of the Gulf and Atlantic Coastal Plain (GACP) demonstrate complex yet recurrent distributional patterns that cannot be explained by this model. For example, eight co-occurring endemic plant taxa with ranges from New York to South Carolina exhibit a large disjunction separating northern and southern populations by >300 km. Pyxidanthera (Diapensiaceae), a plant genus that exhibits this pattern, consists of two taxa recognized as either species or varieties. We investigated the taxonomy and phylogeography of Pyxidanthera using morphological data, cpDNA sequences, and amplified fragment length polymorphism markers. Morphological characters thought to be important in distinguishing Pyxidanthera barbulata and P. brevifolia demonstrate substantial overlap with no clear discontinuities. Genetic differentiation is minimal and diversity estimates for northern and southern populations of Pxyidanthera are similar, with no decrease in rare alleles in northern populations. In addition, the northern populations harbour several unique cpDNA haplotypes. Pyxidanthera appears to consist of one morphologically variable species that persisted in or near its present range at least through the latter Pleistocene, while the vicariance of the northern and southern populations may be comparatively recent. This work demonstrates that the refugial paradigm is not always appropriate and GACP endemic plants, in particular, may exhibit phylogeographical patterns qualitatively different from those of other ENA plant species. (© 2010 Blackwell Publishing Ltd.) |
| فهرسة مساهمة: | Keywords: Diapensiaceae; Pleistocene; amplified fragment length polymorphism; cpDNA; phylogeography; refugium |
| سلسلة جزيئية: | GENBANK HM564379 |
| المشرفين على المادة: | 0 (DNA, Chloroplast) |
| تواريخ الأحداث: | Date Created: 20100908 Date Completed: 20141009 Latest Revision: 20171116 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1111/j.1365-294X.2010.04793.x |
| PMID: | 20819166 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1365-294X |
|---|---|
| DOI: | 10.1111/j.1365-294X.2010.04793.x |