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

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2016
Author Bombarely Aureliano, Moser Michel, Amrad Avichai, Bao Manzhu, Bapaume Laure, Barry Cornelius S, Bliek Mattijs, Boersma Maaike R, Borghi Lorenzo, Bruggmann Rémy, Bucher Marcel, D'Agostino Nunzio, Davies Kevin, Druege Uwe, Dudareva Natalia, Egea-Cortines Marcos, Delledonne Massimo, Fernandez-Pozo Noe, Franken Philipp, Grandont Laurie, Heslop-Harrison J S, Hintzsche Jennifer, Johns Mitrick, Koes Ronald, Lv Xiaodan,
Project Investigation of phytohormone transport and the fate of hypodermal passage cells, a cell type specialized to release strigolactones
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Original article (peer-reviewed)

Journal Nature plants
Volume (Issue) 2(6)
Page(s) 16074 - 16074
Title of proceedings Nature plants
DOI 10.1038/nplants.2016.74

Open Access

URL http://www.nature.com/articles/nplants201674
Type of Open Access Publisher (Gold Open Access)

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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