PMID: 16526503Mar 11, 2006Paper

Contrasting patterns of floral and molecular variation across a cline in Mimulus aurantiacus

Evolution; International Journal of Organic Evolution
Matthew A Streisfeld, Joshua R Kohn

Abstract

Steep clines in ecologically important traits may be caused by divergent natural selection. However, processes that do not necessarily invoke ongoing selection, such as secondary contact or restricted gene flow, can also cause patterns of phenotypic differentiation over short spatial scales. Distinguishing among all possible scenarios is difficult, but an attainable goal is to establish whether scenarios that imply selection need to be invoked. We compared the extent of morphological and genetic differentiation between geographically structured red and yellow floral races of Mimulus aurantiacus (bush monkeyflower; Phrymaceae). Flower color was assessed in a common garden as well as in the field to determine whether variation was genetic and to quantify the extent of geographical differentiation. Population genetic differentiation at marker loci was measured for both chloroplast and nuclear genomes, and the degree of population structure within and among the floral races was evaluated. Flower color shows both a strong genetic basis and a sharp geographic transition, with pure red-flowered populations in western San Diego County and pure yellow-flowered populations to the east. In the zone of contact, both pure and intermediate p...Continue Reading

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Citations

Oct 31, 2015·Evolution; International Journal of Organic Evolution·Sean StankowskiMatthew A Streisfeld
Aug 1, 2015·The New Phytologist·Julienne Ng, Stacey D Smith
Dec 30, 2014·Evolution; International Journal of Organic Evolution·James M Sobel, Matthew A Streisfeld
Apr 10, 2015·Molecular Ecology·Alex D TwyfordJannice Friedman
Sep 12, 2015·Journal of Plant Research·Yuma TakahashiMasakado Kawata
Mar 28, 2008·Molecular Ecology·Michael C Whitlock
Sep 27, 2007·Evolution; International Journal of Organic Evolution·Douglas W Schemske, Paulette Bierzychudek
Jan 27, 2012·Evolution; International Journal of Organic Evolution·Robin HopkinsMark D Rausher
Apr 16, 2015·Evolution; International Journal of Organic Evolution·Nicholas A NortonJeremiah W Busch
Aug 12, 2014·The New Phytologist·Yao-Wu YuanHarvey D Bradshaw
May 15, 2015·Evolution; International Journal of Organic Evolution·Mark D Rausher, Lynda F Delph
May 28, 2016·Molecular Ecology·Kelsey J R P ByersPhilipp M Schlüter
Aug 16, 2016·American Journal of Botany·Andrea E BerardiDouglas R Taylor
Aug 28, 2015·Proceedings. Biological Sciences·Sean Stankowski, Matthew A Streisfeld
Jun 25, 2014·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Daniel J CrawfordJonathan F Wendel
Feb 11, 2019·Molecular Ecology·Shawn M BillermanMatthew D Carling

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