Development of a Diagnostic Assay for Differentiation Between Genetic Groups in Clades I, II, III, and IV of f. sp. .

Wheat stem rust has reemerged as a serious disease caused by new variants of f. sp. .

Distribution of f. sp. Races and Virulence in Wheat Growing Regions of Kenya from 1970 to 2014.

Stripe rust, caused by the fungal pathogen f. sp. , is a major threat to wheat ( spp.

Rust expression browser: an open source database for simultaneous analysis of host and pathogen gene expression profiles with expVIP.

Background: Transcriptomics is being increasingly applied to generate new insight into the interactions between plants and their pathogens. For the wheat yellow (stripe) rust pathogen (Puccinia striiformis f. sp.

Genome-Wide Association Study for Multiple Biotic Stress Resistance in Synthetic Hexaploid Wheat.

Genetic resistance against biotic stress is a major goal in many wheat breeding programs. However, modern wheat cultivars have a limited genetic variation for disease and pest resistance and there is always a possibility of the evolution of new diseases and pests to overcome previously identified resistance genes. A total of 125 synthetic hexaploid wheats (SHWs; 2 = 6 = 42, AABBDD, L.

Sources of Stem Rust Resistance in Wheat-Alien Introgression Lines.

Stem rust is one of the most devastating diseases of wheat. Widely virulent races of the pathogen in the Ug99 lineage (e.g.

Kenyan Isolates of Puccinia graminis f. sp. tritici from 2008 to 2014: Virulence to SrTmp in the Ug99 Race Group and Implications for Breeding Programs.

Frequent emergence of new variants in the Puccinia graminis f. sp. tritici Ug99 race group in Kenya has made pathogen survey a priority.

Association mapping of stem rust race TTKSK resistance in US barley breeding germplasm.

Loci conferring resistance to the highly virulent African stem rust race TTKSK were identified in advanced barley breeding germplasm and positioned to chromosomes 5H and 7H using an association mapping approach. African races of the stem rust pathogen (Puccinia graminis f. sp.

Identification of Ug99 stem rust resistance loci in winter wheat germplasm using genome-wide association analysis.

The evolution of a new race of stem rust, generally referred to as Ug99, threatens global wheat production because it can overcome widely deployed resistance genes that had been effective for many years. To identify loci conferring resistance to Ug99 in wheat, a genome-wide association study was conducted using 232 winter wheat breeding lines from the International Winter Wheat Improvement Program. Breeding lines were genotyped with diversity array technology, simple sequence repeat and sequence-tagged site markers, and phenotyped at the adult plant stage for resistance to stem rust in the stem rust resistance screening nursery at Njoro, Kenya during 2009-2011.