Detection of an inversion in the Ty-2 region between S. lycopersicum and S. habrochaites by a combination of de novo genome assembly and BAC cloning.

ABSTRACT:

Key message

A chromosomal inversion associated with the tomato Ty - 2 gene for TYLCV resistance is the cause of severe suppression of recombination in a tomato Ty - 2 introgression line. Among tomato and its wild relatives inversions are often observed, which result in suppression of recombination. Such inversions hamper the transfer of important traits from a related species to the crop by introgression breeding. Suppression of recombination was reported for the TYLCV resistance gene, Ty-2, which has been introgressed in cultivated tomato (Solanum lycopersicum) from the wild relative S. habrochaites accession B6013. Ty-2 was mapped to a 300-kb region on the long arm of chromosome 11. The suppression of recombination in the Ty-2 region could be caused by chromosomal rearrangements

SUBMITTER: Wolters AM 

PROVIDER: S-EPMC4572051 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature