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An enhanced microsatellite map of diploid Fragaria

Sargent, D.J., Clarke, J., Simpson, D.W. , Tobutt, K.R. , Arus, P. , Monfort, A. , Vilanova, S. , Denoyes-Rothan, B., Rousseau, M., Folta, K.M. , Bassil, N.V. and Battey, N.H. (2006) An enhanced microsatellite map of diploid Fragaria. Journal Theoretical and Applied Genetics, 112 (7). pp. 1349-1359. ISSN 0040-5752

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To link to this item DOI: 10.1007/s00122-006-0237-y


A total of 45 microsatellites (SSRs) were developed for mapping in Fragaria. They included 31 newly isolated codominant genomic SSRs from F. nubicola and a further 14 SSRs, derived from an expressed sequence tagged library (EST-SSRs) of the cultivated strawberry, F. × ananassa. These, and an additional 64 previously characterised but unmapped SSRs and EST-SSRs, were scored in the diploid Fragaria interspecific F2 mapping population (FV×FN) derived from a cross between F. vesca 815 and F. nubicola 601. The cosegregation data of these 109 SSRs, and of 73 previously mapped molecular markers, were used to elaborate an enhanced linkage map. The map is composed of 182 molecular markers (175 microsatellites, six gene specific markers and one sequence-characterised amplified region) and spans 424 cM over seven linkage groups. The average marker spacing is 2.3 cM/marker and the map now contains just eight gaps longer than 10 cM. The transferability of the new SSR markers to the cultivated strawberry was demonstrated using eight cultivars. Because of the transferable nature of these markers, the map produced will provide a useful reference framework for the development of linkage maps of the cultivated strawberry and for the development of other key resources for Fragaria such as a physical map. In addition, the map now provides a framework upon which to place transferable markers, such as genes of known function, for comparative mapping purposes within Rosaceae.

Item Type:Article
Divisions:Life Sciences > School of Biological Sciences
ID Code:10223
Uncontrolled Keywords:Fragaria , Genetic mapping , Microsatellites , EST , Functional genomics

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