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Solanum lycopersicum (tomato) genome view
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     Lineage: Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliophyta; eudicotyledons; Gunneridae; Pentapetalae; asterids; lamiids; Solanales; Solanaceae; Solanoideae; Solaneae; Solanum; Lycopersicon; Solanum lycopersicum

The genus Solanum includes the cultivated tomato, S. lycopersicum, together with its wild relatives. Tomato has long been used as a model system for plant genetics. It has been used for a number of firsts in molecular genetics of plants. The use of RFLP (restriction fragment length polymorphism) to generate a linkage map of a complete plant genome was done with tomato (Bernatzky and Tanksley). Tomato was the organism where quantitative traits were resolved into Mendelian factors (Paterson et al.). The use of allelic variation of RAPD (random amplification of polymorphic DNA) to facilitate map-based walking to agronomically pertinent loci was first done in tomato ( Wing et al. and Martin et al.). The creation of a high-density molecular linkage map and the use for comparative genomics were done with tomato and potato (Tanksley et al.). There is an NSF-funded effort to create an ordered collection of BACs that is to be superimposed upon the tomato genetic map. This resource will more rapidly allow access to the underlying genetic and functional basis of the extensive collection of alleles of already known loci affecting fruit development and ripening, interactions between plants and pathogens, and other biological processes of plants.

An international consortium of researchers as part of the Solanaceae Genomics Project have sequenced the gene rich regions of all 12 chromosomes on a BAC-by-BAC basis. In US, majority of the effort was funded by NSF and USDA-NRI Plant Genome program; sequencing chromosomes 1, 10, and 11. Other participating member countries are Korea (chromosome 2), China (chromosome 3), UK (chromosome 4), India (chromosome 5), The Netherlands (chromosome 6), France (chromosome 7), and Japan (chromosome 9). In 2009 a complementary whole-genome shotgun effort was started. The two sequence efforts have been combined into a high-quality assembly. Annotation submitted with the GenBank material is performed by the International Tomato Annotation Group (ITAG), a multinational consortium, funded in part by the EU-SOL project.

Fourteen genetic maps are available in Map Viewer. Detailed information for each map is available in the BioProject database.

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