Unlocking the Barley Genome by Chromosomal and Comparative Genomics

0365200 - ÚEB 2012 RIV US eng J - Journal Article
Mayer, K. F. X. - Martis, M. - Hedley, P. E. - Šimková, Hana - Liu, H. - Morris, J. A. - Steuernagel, B. - Taudien, S. - Kubaláková, Marie - Suchánková, Pavla - Doležel, Jaroslav - Stein, N. … Total 28 authors
Unlocking the Barley Genome by Chromosomal and Comparative Genomics.
Plant Cell. Roč. 23, č. 4 (2011), s. 1249-1263. ISSN 1040-4651. E-ISSN 1532-298X
Institutional research plan: CEZ:AV0Z50380511
Keywords : PSEUDO-RESPONSE-REGULATOR * ACETYL-COA CARBOXYLASE * TRITICUM-AESTIVUM L.
Subject RIV: EB - Genetics ; Molecular Biology
Impact factor: 8.987, year: 2011

We used a novel approach that incorporated chromosome sorting, next-generation sequencing, array hybridization, and systematic exploitation of conserved synteny with model grasses to assign -86% of the estimated -32,000 barley (Hordeum vulgare) genes to individual chromosome arms. Using a series of bioinformatically constructed genome zippers that integrate gene indices of rice (Oryza sativa), sorghum (Sorghum bicolor), and Brachypodium distachyon in a conserved synteny model, we were able to assemble 21,766 barley genes in a putative linear order. We show that the barley (H) genome displays a mosaic of structural similarity to hexaploid bread wheat (Triticum aestivum) A, B, and D subgenomes and that orthologous genes in different grasses exhibit signatures of positive selection in different lineages. We present an ordered, information-rich scaffold of the barley genome that provides a valuable and robust framework for the development of novel strategies in cereal breeding.
Permanent Link: http://hdl.handle.net/11104/0200497