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The tomato genome sequence provides insights into fleshy fruit evolution

Zouine, Mohamed and Latché, Alain and Rousseau, Christine and Regad, Farid and Pech, Jean-Claude and Philippot, Murielle and Bouzayen, Mondher and Delalande, Corinne and Frasse, Pierre and Schiex, Thomas and Noirot, Céline and Bellec, Arnaud and Klopp, Christophe and Berges, Hélène and Mariette, Jérôme and Vautrin, Sonia and Causse, Mathilde and Rothan, Christophe The tomato genome sequence provides insights into fleshy fruit evolution. (2012) Nature, vol. 485 . pp. 635-641. ISSN 0028-0836

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Official URL: http://dx.doi.org/10.1038/nature11119

Abstract

Tomato (Solanum lycopersicum) is a major crop plant and a model system for fruit development. Solanum is one of the largest angiosperm genera1 and includes annual and perennial plants from diverse habitats. Here we present a high-quality genome sequence of domesticated tomato, a draft sequence of its closest wild relative, Solanum pimpinellifolium2, and compare them to each other and to the potato genome (Solanum tuberosum). The two tomato genomes show only 0.6% nucleotide divergence and signs of recent admixture, but show more than 8% divergence from potato, with nine large and several smaller inversions. In contrast to Arabidopsis, but similar to soybean, tomato and potato small RNAs map predominantly to gene-rich chromosomal regions, including gene promoters. The Solanum lineage has experienced two consecutive genome triplications: one that is ancient and shared with rosids, and a more recent one. These triplications set the stage for the neofunctionalization of genes controlling fruit characteristics, such as colour and fleshiness.

Item Type:Article
Additional Information:Thanks to Nature Publishing Group editor. The definitive version is available at http://www.nature.com/nature/journal/v485/n7400/full/nature11119.html
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Institut National de la Recherche Agronomique - INRA
Other partners > Université de Bordeaux 1 (FRANCE)
Other partners > Université de Bordeaux 2 - Victor Segalen (FRANCE)
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Deposited By:Brigitte LAFFORGUE

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