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DOI | 10.1002/ajb2.1259 |
Calochortus gunnisonii furthers evidence for the complex genetic legacy of historical climate change in the southernRocky Mountains | |
Fuller, Ryan S.1,2; McGlaughlin, Mitchell E.1 | |
发表日期 | 2019 |
ISSN | 0002-9122 |
EISSN | 1537-2197 |
卷号 | 106期号:3页码:477-488 |
英文摘要 | Premise of the StudyClimate cycles of the Quaternary have impacted plants at a global scale, leaving behind a complex genetic legacy. Species of the northern Rocky Mountains of North America were exposed to more uniform glacial patterns than the central and southern ranges, where synergistic relationships between temperature and precipitation caused differences in the timing and extent of glacier onset. We examined the genetic impacts of climate oscillations on Calochortus gunnisonii (Liliaceae) in the central and southern Rocky Mountains. MethodsPopulations were sampled from disjunct mountain ranges across the basins of Wyoming and northern and central Colorado. Allelic data from nuclear microsatellites and plastid sequences (trnV-ndhC, petA-psbJ, and rpl16) were used to examine patterns of genetic structure between and among populations along the southern Rocky Mountain corridor. Key ResultsWe infer considerable population structure concordant with mountain range of origin. Clustering analysis supports separate north and south genetic clusters on either side of major basins in Wyoming, suggesting that populations were maintained in two distinct refugia. Additionally, populations within the Sierra Madre Range of southern Wyoming show localized, divergent genetic signal indicative of a third potential glacial refugium. By contrast, recent genetic admixture is observed in the Laramie, Medicine Bow, and Front ranges, where population expansion from glacial refugia has likely occurred. ConclusionsWe conclude that during climate cycles of the Quaternary, C. gunnisonii experienced periods of population expansion and reduction, habitat fragmentation, isolation in three or more refugia, and admixture mirroring genetic impacts of other southern Rocky Mountains organisms. |
WOS研究方向 | Plant Sciences |
来源期刊 | AMERICAN JOURNAL OF BOTANY
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/93868 |
作者单位 | 1.Univ Northern Colorado, Sch Biol Sci, 501 20th St, Greeley, CO 80639 USA; 2.Univ Chicago, Comm Evolutionary Biol, 1025 E 57th St, Chicago, IL 60637 USA |
推荐引用方式 GB/T 7714 | Fuller, Ryan S.,McGlaughlin, Mitchell E.. Calochortus gunnisonii furthers evidence for the complex genetic legacy of historical climate change in the southernRocky Mountains[J],2019,106(3):477-488. |
APA | Fuller, Ryan S.,&McGlaughlin, Mitchell E..(2019).Calochortus gunnisonii furthers evidence for the complex genetic legacy of historical climate change in the southernRocky Mountains.AMERICAN JOURNAL OF BOTANY,106(3),477-488. |
MLA | Fuller, Ryan S.,et al."Calochortus gunnisonii furthers evidence for the complex genetic legacy of historical climate change in the southernRocky Mountains".AMERICAN JOURNAL OF BOTANY 106.3(2019):477-488. |
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