GrainGenes Reference Report: TAG-127-1441
Reference
TAG-127-1441
Title
Molecular mapping of an adult plant stem rust resistance gene Sr56 in winter wheat cultivar Arina
Journal
Theoretical and Applied Genetics
Year
2014
Volume
127
Pages
1441-1448
Author
[ Hide all but 1 of 7 ] Bansal U Bariana H Wong D Randhawa M Wicker T Hayden M Keller B
Abstract
The identification of new sources of adult plant resistance (APR) and effective combinations of major and minor genes is well appreciated in breeding for durable rust resistance in wheat. A QTL, QSr.sun-5BL, contributed by winter wheat cultivar Arina providing 12–15 % reduction in stem rust severity, was reported in an Arina/Forno recombinant inbred line (RIL) population. Following the demonstration of monogenic segregation for APR in the Arina/Yitpi RIL population, the resistance locus was formally named Sr56. Saturation mapping of the Sr56 region using STS (from EST and DArT clones), SNP (9 K) and SSR markers from wheat chromosome survey sequences that were ordered based on synteny with Brachypodium distachyon genes in chromosome 1 resulted in the flanking of Sr56 by sun209 (SSR) and sun320 (STS) at 2.6 and 1.2 cM on the proximal and distal ends, respectively. Investigation of conservation of gene order between the Sr56 region in wheat and B. distachyon showed that the syntenic region defined by SSR marker interval sun209-sun215 corresponded to approximately 192 kb in B. distachyon, which contains five predicted genes. Conservation of gene order for the Sr56 region between wheat and Brachypodium, except for two inversions, provides a starting point for future map-based cloning of Sr56. The Arina/Forno RILs carrying both Sr56 and Sr57 exhibited low disease severity compared to those RILs carrying these genes singly. Markers linked with Sr56 would be useful for marker-assisted pyramiding of this gene with other major and APR genes for which closely linked markers are available.
External Databases
http://link.springer.com/article/10.1007%2Fs00122-014-2311-1 PubMed: 24794977
Gene
Sr56 (Triticum) Sr57 (Triticum)
Locus
Xsun209 Sr56
Probe
SUN209
Summarized in
MAS Wheat. Bringing Genomics to the Wheat Fields. Disease Resistance. Stem Rust Resistance. Sr56 MAS Wheat. Marker Assisted Selection in Wheat.
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: TAG-127-1441
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
| |||||||||
|
|
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||