Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome

0370224 - BC 2012 RIV US eng J - Journal Article
Torres, A.T. - Gong, Z. - Iovene, M. - Hirsch, C.D. - Buell, C.R. - Bryan, G.J. - Novák, Petr - Macas, Jiří - Jiang, J.
Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome.
G3-Genes, Genomes, Genetics. Roč. 1, July 2011 (2011), s. 85-92. ISSN 2160-1836. E-ISSN 2160-1836
R&D Projects: GA MŠMT(CZ) LH11058
Institutional research plan: CEZ:AV0Z50510513
Keywords : Satellite sequences * Potato genome * Repeats
Subject RIV: EB - Genetics ; Molecular Biology

Subtelomeric domains immediately adjacent to telomeres represent one of the most dynamic and rapidly evolving regions in eukaryotic genomes. A common feature associated with subtelomeric regions in different eukaryotes is the presence of long arrays of tandemly repeated satellite sequences. However, studies on molecular organization and evolution of subtelomeric repeats are rare. We isolated two subtelomeric repeats, CL14 and CL34, from potato (Solanum tuberosum). The CL14 and CL34 repeats are organized as independent long arrays, up to 1-3 Mb, of 182 bp and 339 bp monomers, respectively. The CL14 and CL34 repeat arrays are directly connected with the telomeric repeats at some chromosomal ends. The CL14 repeat was detected at the subtelomeric regions among highly diverged Solanum species, including tomato (Solanum lycopersicum). In contrast, CL34 was only found in potato and its closely related species.
Permanent Link: http://hdl.handle.net/11104/0204087