GrainGenes Reference Report: TAG-119-1441
Reference
TAG-119-1441
Title
Development of wheat lines carrying stem rust resistance gene Sr39 with reduced Aegilops speltoides chromatin and simple PCR markers for marker-assisted selection
Journal
Theoretical and Applied Genetics
Year
2009
Volume
119
Pages
1441-1450
Author
[ Hide all but 1 of 7 ] Mago R Zhang P Bariana HS Verlin DC Bansal UK Ellis JG Dundas IS
Abstract
The use of major resistance genes is a cost-effective strategy for preventing stem rust epidemics in wheat crops. The stem rust resistance gene Sr39 provides resistance to all currently known pathotypes of Puccinia graminis f. sp. tritici (Pgt) including Ug99 (TTKSK) and was introgressed together with leaf rust resistance gene Lr35 conferring adult plant resistance to P. triticina (Pt), into wheat from Aegilops speltoides. It has not been used extensively in wheat breeding because of the presumed but as yet undocumented negative agronomic effects associated with Ae. speltoides chromatin. This investigation reports the production of a set of recombinants with shortened Ae. speltoides segments through induction of homoeologous recombination between the wheat and the Ae. speltoides chromosome. Simple PCR-based DNA markers were developed for resistant and susceptible genotypes (Sr39-22r and Sr39-50s) and validated across a set of recombinant lines and wheat cultivars. These markers will facilitate the pyramiding of ameliorated sources of Sr39 with other stem rust resistance genes that are effective against the Pgt pathotype TTKSK and its variants.
External Databases
http://link.springer.com/article/10.1007%2Fs00122-009-1146-7 PubMed: 19756473
Gene
Sr39 (Triticum)
Locus
Sr39
Probe
Sr39-22r Sr39-50s
Summarized in
Mago R and Dundas I MAS Wheat. Bringing Genomics to the Wheat Fields. Disease resistance. Stem Rust Resistance. Sr39 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-119-1441
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||