دورية أكاديمية
Rethinking refugia: Tree topology, divergence dates, and demographic history trace the distribution of the endangered Plymouth gentian (Sabatia kennedyana) from the Pleistocene glaciation to present day.
| العنوان: | Rethinking refugia: Tree topology, divergence dates, and demographic history trace the distribution of the endangered Plymouth gentian (Sabatia kennedyana) from the Pleistocene glaciation to present day. |
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| المؤلفون: | Suarez-Gonzalez A; Department of Biology, The University of Winnipeg, 599 Portage Avenue, Winnipeg, Manitoba, R3B 2G3, Canada Department of Botany, University of British Columbia, 3529-6270 University Blvd., Vancouver, British Columbia, V6T 1Z4, Canada., Sutton JT; Department of Biology, University of Hawai'i at Mānoa, 2538 McCarthy Mall, Honolulu, Hawaii 96822 USA Department of Biology, Acadia University, 33 Westwood Avenue, Wolfville, Nova Scotia, B4P 2R6, Canada., Trant AJ; School of Environmental Studies, P. O. Box 3060, STN CSC, University of Victoria, Victoria, British Columbia, V8W 3R4, Canada Department of Biology, Acadia University, 33 Westwood Avenue, Wolfville, Nova Scotia, B4P 2R6, Canada., Zamlynny E; Department of Biology, Acadia University, 33 Westwood Avenue, Wolfville, Nova Scotia, B4P 2R6, Canada Department of Chemistry, Acadia University, 6 University Avenue, Wolfville, Nova Scotia, B4P 2R6, Canada., Good SV; Department of Biology, The University of Winnipeg, 599 Portage Avenue, Winnipeg, Manitoba, R3B 2G3, Canada Department of Botany, University of British Columbia, 3529-6270 University Blvd., Vancouver, British Columbia, V6T 1Z4, Canada. |
| المصدر: | American journal of botany [Am J Bot] 2015 Apr; Vol. 102 (4), pp. 609-20. Date of Electronic Publication: 2015 Apr 06. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wiley Country of Publication: United States NLM ID: 0370467 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1537-2197 (Electronic) Linking ISSN: 00029122 NLM ISO Abbreviation: Am J Bot Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: <2018-> : [Philadelphia, PA] : Wiley Original Publication: Baltimore Md : Botanical Society Of America |
| مواضيع طبية MeSH: | Genetic Variation* , Plant Dispersal* , Refugium*, DNA, Chloroplast/*genetics , Gentianaceae/*genetics, Canada ; Climate Change ; DNA, Chloroplast/metabolism ; Evolution, Molecular ; Haplotypes/genetics ; Molecular Sequence Data ; Phylogeny ; Phylogeography ; Sequence Analysis, DNA ; United States |
| مستخلص: | Premise of Study: Molecular population genetics is a powerful tool to infer how species responded to past environmental change. In the northern hemisphere, interest is increasing in how species responded to changes in ice coverage and temperature during the last glaciation maximum (LGM, between 18000-21000 yr ago) with a common assumption that glacial refugia were located at the southern edge of a species range. Methods: We reconstructed the glacial and postglacial phylogeography of Sabatia kennedyana, a member of the Atlantic Coastal Plains Flora with a current distribution from Nova Scotia (NS) to South Carolina, using both cpDNA and nuclear markers. We also examined clinal variation in morphological traits, in particular relative investment in asexual vs sexual growth. Key Results: We find strong evidence that the species did not reside in southern glacial refugia, but rather in primary glacial refugia off the exposed continental shelf extending from Cape Cod and that this area was responsible for the founding of modern populations across the range from Nova Scotia (NS) to the United States. Additionally, based on the finding of higher cpDNA diversity and older cpDNA lineages in NS, we propose that multiple founder events occurred in NS, while only a single lineage gave rise to current populations in the United States. Conclusions: By understanding how S. kennedyana responded to past shifts in climate and by identifying areas of high genetic diversity in the northern range edge, we discuss the potential response of the species to future climate change scenarios. (© 2015 Botanical Society of America, Inc.) |
| فهرسة مساهمة: | Keywords: Atlantic Coastal Plain; Bayesian analyses; Gentianaceae; ISSR; Pleistocene; clinal variation; cpDNA; extended Bayesian skyline plot; flora; northern refugia; sexual vs asexual investment |
| سلسلة جزيئية: | GENBANK JX003130; JX003131; JX003132; JX003133; JX003134; JX003135; JX003136; JX003137; JX003138; JX003139; JX003140; JX003141; JX003142; JX003143; JX003144; JX003145; JX003146; JX003147; JX003148; JX003149; JX003150; JX003151; JX003152; JX003153; JX003154; JX003155; JX003156; JX003157; JX003158; JX003159; JX003160; JX003161; JX003162; JX003163; JX003164; JX003165; JX003166; JX003167; JX003168; JX003169; JX003170; JX003171; JX003172; JX003173; JX003174; JX003175; JX003176; JX003177; JX003178; JX003179; JX003180; JX003181; JX003182; JX003183; JX003184; JX003185; JX003186; JX003187; JX003188; JX003189; JX003190; JX003191; JX003192; JX003193; JX003194; JX003195; JX003196; JX003197; JX003198; JX003199; JX003200; JX003201; JX003202; JX003203; JX003204; JX003205; JX003206; JX003207; JX003208; JX003209; JX003210; JX003211; JX003212; JX003213; JX003214; JX003215; JX003216; JX003217; JX003218; JX003219; JX003220; JX003221; JX003222; JX003223; JX003224; JX003225; JX003226; JX003227; JX003228; JX003229; JX003230; JX003231; JX003232; JX003233; JX003234; JX003235; JX003236; JX003237; JX003238; JX003239; JX003240; JX003241; JX003242; JX003243; JX003244; JX003245 |
| المشرفين على المادة: | 0 (DNA, Chloroplast) |
| تواريخ الأحداث: | Date Created: 20150417 Date Completed: 20160516 Latest Revision: 20150416 |
| رمز التحديث: | 20231215 |
| DOI: | 10.3732/ajb.1400254 |
| PMID: | 25878093 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1537-2197 |
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| DOI: | 10.3732/ajb.1400254 |