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- Title
The tomato genome sequence provides insights into fleshy fruit evolution.
- Authors
Sato, Shusei; Tabata, Satoshi; Hirakawa, Hideki; Asamizu, Erika; Shirasawa, Kenta; Isobe, Sachiko; Kaneko, Takakazu; Nakamura, Yasukazu; Shibata, Daisuke; Aoki, Koh; Egholm, Michael; Knight, James; Bogden, Robert; Li, Changbao; Shuang, Yang; Xu, Xun; Pan, Shengkai; Cheng, Shifeng; Liu, Xin; Ren, Yuanyuan
- Abstract
Tomato (Solanum lycopersicum) is a major crop plant and a model system for fruit development. Solanum is one of the largest angiosperm genera 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 pimpinellifolium, 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.
- Subjects
PLANT genomes; TOMATO genetics; ANGIOSPERMS; SOLANUM; POTATOES; ARABIDOPSIS
- Publication
Nature, 2012, Vol 485, Issue 7400, p635
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/nature11119