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

Aureliano Bombarely 1 Michel Moser 2 Avichai Amrad 2 Manzhu Bao 3 Laure Bapaume 4 Cornelius Barry 1 Mattijs Bliek 5 Maaike Boersma 5 Lorenzo Borghi 6 Remy Bruggmann 7 Marcel Bucher 8 Nunzio d'Agostino 9 Kevin Davies 10 Uwe Druege 11 Natalia Dudareva 12 Marcos Egea-Cortines 13 Massimo Delledonne 14 Noe Fernandez-Pozo 15 Philipp Franken 11 Laurie Grandont 16 J.S. Heslop-Harrison 17 Jennifer Hintzsche 18 Mitrick Johns 19 Ronald Koes 20 Xiaodan Lv 20 Eric Lyons 21 Diwa Malla 18 Enrico Martinoia 6 Neil Mattson 22 Patrice Morel 23 Lukas Mueller 15 Joelle Muhlemann 12 Eva Nouri 4 Valentina Passeri 5 Mario Pezzotti 14 Qinzhou Qi 18 Didier Reinhardt 4 Mélanie Rich 4 Katja Richert-Pöggeler 24 Tim Robbins 25 Michael Schatz 16 Eric Schranz 16 Robert Schuurink 5, 26 Trude Schwarzacher 27 Kees Spelt 5 Haibao Tang 28 Susan Urbanus 5 Michiel Vandenbussche 23 Kitty Vijverberg 22 Gonzalo Villarino 22 Ryan Warner 1 Julia Weiss 13 Zhen Yue 20 Jan Zethof 29 Francesca Quattrocchio 18 Thomas Sims 18 Cris Kuhlemeier 30
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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Aureliano Bombarely, Michel Moser, Avichai Amrad, Manzhu Bao, Laure Bapaume, et al.. Insight into the evolution of the Solanaceae from the parental genomes of Petunia hybrida. Nature Plants, Nature Publishing Group, 2016, 2 (6), ⟨10.1038/nplants.2016.74⟩. ⟨hal-02640501⟩



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