PMID: 11607153Feb 15, 1991Paper

Pollen-mediated introgression and hybrid speciation in Louisiana irises

Proceedings of the National Academy of Sciences of the United States of America
Michael L ArnoldJ J Robinson

Abstract

Populations of the "Louisiana iris" species Iris fulva, I. hexagona, and I. nelsonii were examined genetically to test for interspecific gene flow between I. fulva and I. hexagona, for pollen- versus seed-mediated introgression between these species, and for the presumed hybrid origin of I. nelsonii. Genetic markers were identified by using both a polymerase chain reaction-like method that allows the identification of random, nuclear markers and standard polymerase chain reaction experiments involving specific chloroplast DNA (cpDNA) oligonucleotides. Restriction endonuclease digestions of the cpDNA amplification products resolved diagnostic restriction site differences for I. fulva and I. hexagona. The distribution of the species-specific nuclear markers supports a hypothesis of bidirectional introgression between I. fulva and I. hexagona. Thus, individuals analyzed from a contemporary hybrid population demonstrate multilocus genotypes that are indicative of advanced-generation hybrid individuals. Furthermore, several markers from the alternate species were present in low frequency in one allopatric population each of I. fulva and I. hexagona. Data from the nuclear analysis also support the hypothesized hybrid origin of I. nel...Continue Reading

Citations

Sep 1, 1994·Plant Molecular Biology·G Caetano-Anollés
Sep 15, 2004·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·M PharmawatiP M Finnegan
Aug 25, 2012·Molecular Biotechnology·Isaura CastroJuan Pedro Martín
May 1, 1992·Molecular Ecology·H HadrysB Schierwater
Oct 1, 1992·Molecular Ecology·P O Lewis, A A Snow
Feb 1, 1995·Genome Génome / Conseil National De Recherches Canada·G M GarciaG Kochert
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Oct 1, 1996·Genome Génome / Conseil National De Recherches Canada·R GomezW M Roca
Mar 29, 2014·BMC Evolutionary Biology·Sébastien WielgossThierry Wirth
Jul 22, 1997·Proceedings of the National Academy of Sciences of the United States of America·D E Parfitt, M L Badenes
Jun 2, 2005·Evolution; International Journal of Organic Evolution·Patrik NosilDaniel J Funk
Sep 10, 2014·Applications in Plant Sciences·Daniel W H Robarts, Andrea D Wolfe
Apr 1, 2014·Ecology and Evolution·Jennafer A P Hamlin, Michael L Arnold
May 1, 2009·Molecular Ecology Resources·Julian R StarrBrianna N Chouinard
Jun 25, 2009·Evolution; International Journal of Organic Evolution·Sunni J TaylorNoland H Martin
Aug 11, 2000·Evolution; International Journal of Organic Evolution·J M BurkeM L Arnold
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Jul 1, 1995·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·M PerronJ Bousquet
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Sep 1, 1993·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·K WolffJ P Rijn

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