Insight into the evolution of the Solanaceae from the parental genomes of Petunia hybrida

Aureliano Bombarely(Virginia Tech), Michel Moser(University of Bern), Avichai Amrad(University of Bern), Manzhu Bao(Huazhong Agricultural University), Laure Bapaume(University of Fribourg), Cornelius S. Barry(Michigan State University), Mattijs Bliek(University of Amsterdam), Maaike R. Boersma(University of Amsterdam), Lorenzo Borghi(University of Zurich), Rémy Bruggmann(University of Bern), Marcel Bucher(University of Cologne), Nunzio D’Agostino(Centro di Ricerca per l’Orticoltura), Kevin M. Davies(Plant & Food Research), Uwe Druege(Leibniz Association), Natalia Dudareva(Purdue University West Lafayette), Marcos Egea‐Cortines(Universidad Politécnica de Cartagena), Massimo Delledonne(University of Verona), Noé Fernández‐Pozo(Cornell University), Philipp Franken(Leibniz Association), Laurie Grandont(Wageningen University & Research), J. S. Heslop‐Harrison(University of Leicester), Jennifer D. Hintzsche(Northern Illinois University), Mitrick A. Johns(Northern Illinois University), Ronald Koes(BGI Group (China)), Xiaodan Lv(BGI Group (China)), Eric Lyons(University of Arizona), Diwa Malla(Northern Illinois University), Enrico Martinoia(University of Zurich), Neil Mattson(Cornell University), P. Morel(Université Claude Bernard Lyon 1), Lukas A. Mueller(Cornell University), Joëlle K. Mühlemann(Purdue University West Lafayette), Eva Nouri(University of Fribourg), Valentina Passeri(University of Amsterdam), Mario Pezzotti(University of Verona), Qinzhou Qi(Northern Illinois University), Didier Reinhardt(University of Fribourg), Mélanie K. Rich(University of Fribourg), Katja R. Richert‐Pöggeler(Julius Kühn-Institut), Timothy P. Robbins(University of Nottingham), Michael C. Schatz(Cold Spring Harbor Laboratory), M. Eric Schranz(Wageningen University & Research), Robert C. Schuurink(Cold Spring Harbor Laboratory), Trude Schwarzacher(University of Leicester), Kees Spelt(University of Amsterdam), Haibao Tang(University of Arizona), Susan L. Urbanus(University of Amsterdam), Michiel Vandenbussche(Université Claude Bernard Lyon 1), Kitty Vijverberg(Radboud University Nijmegen), Gonzalo Villarino(Cornell University), Ryan M. Warner(Michigan State University), Julia Weiß(Universidad Politécnica de Cartagena), Zhen Yue(BGI Group (China)), Jan Zethof(Radboud University Nijmegen), Francesca Quattrocchio(University of Amsterdam), Thomas L. Sims(Northern Illinois University), Cris Kuhlemeier(University of Bern)
Nature Plants
May 27, 2016
10.1038/nplants.2016.74
Cited by 395Open Access
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Abstract

Petunia hybrida is a popular bedding plant that has a long history as a genetic model system. We report the whole-genome sequencing and assembly of inbred derivatives of its two wild parents, P. axillaris N and P. inflata S6. The assemblies include 91.3% and 90.2% coverage of their diploid genomes (1.4 Gb; 2n = 14) containing 32,928 and 36,697 protein-coding genes, respectively. The genomes reveal that the Petunia lineage has experienced at least two rounds of hexaploidization: the older gamma event, which is shared with most Eudicots, and a more recent Solanaceae event that is shared with tomato and other solanaceous species. Transcription factors involved in the shift from bee to moth pollination reside in particularly dynamic regions of the genome, which may have been key to the remarkable diversity of floral colour patterns and pollination systems. The high-quality genome sequences will enhance the value of Petunia as a model system for research on unique biological phenomena such as small RNAs, symbiosis, self-incompatibility and circadian rhythms.

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