Annals of Botany 107: 1287–1312, 2011 doi:10.1093/aob/mcr080, available online at www.aob.oxfordjournals.org Evolution of oil-producing trichomes in Sisyrinchium (Iridaceae): insights from the first comprehensive phylogenetic analysis of the genus Olivier Chauveau1,*, Lilian Eggers2, Christian Raquin3, Adriano Silve´rio1,2, Spencer Brown4, Arnaud Couloux5, Corine Cruaud5, Eliane Kaltchuk-Santos6, Roxana Yockteng7, Tatiana T. Souza-Chies2 and Sophie Nadot1 1Universite´ Paris-Sud, Laboratoire Ecologie Syste´matique et Evolution, UMR 8079, Orsay, F-91405, France, 2Instituto de Biocieˆncias, Departamento de Botaˆnica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Av. Bento Gonc¸alves, 9500 – Pre´dio 43433, Brazil, 3CNRS, Laboratoire Ecologie Syste´matique et Evolution, UMR 8079, Orsay, F-91405, France, 4CNRS, Dynamique de la compartimentation cellulaire, Institut des Sciences du ve´ge´tal, UPR 2355, Gif-sur-Yvette, F-91198, France, 5GENOSCOPE, Centre National de Se´quenc¸age. 2, rue Gaston Cre´mieux, CP5706, F-91057 Evry Cedex, France, 6Instituto de Biocieˆncias, Departamento de Gene´tica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonc¸alves, 9500 – Pre´dio 43323 M, CEP 91501–970, Porto Alegre, Brazil and 7MNHN, UMR 7205 Origine, Structure et Evolution de la Biodiversite´, Paris, F-75005, France Downloaded from * For correspondence. E-mail
[email protected] Received: 5 November 2010 Returned for revision: 10 December 2010 Accepted: 22 February 2011 Published electronically: 27 April 2011 † Background and Aims Sisyrinchium (Iridaceae: Iridoideae: Sisyrinchieae) is one of the largest, most widespread http://aob.oxfordjournals.org/ and most taxonomically complex genera in Iridaceae, with all species except one native to the American conti- nent.