scholarly journals Temperature‐sensitive wheat stem rust resistance gene Sr15 is effective against Puccinia graminis f. sp. tritici race TTKSK

2018 ◽  
Vol 68 (1) ◽  
pp. 143-151 ◽  
Author(s):  
L. Gao ◽  
E. M. Babiker ◽  
I. C. Nava ◽  
J. Nirmala ◽  
Z. Bedo ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Rust Resistance Gene ◽  
Temperature Sensitive ◽  
Puccinia Graminis ◽  
Stem Rust Resistance Gene ◽  
Wheat Stem Rust

scholarly journals Targeted Introgression of a Wheat Stem Rust Resistance Gene by DNA Marker-Assisted Chromosome Engineering

Genetics ◽  
2011 ◽  
Vol 187 (4) ◽  
pp. 1011-1021 ◽  
Author(s):  
Zhixia Niu ◽  
Daryl L. Klindworth ◽  
Timothy L. Friesen ◽  
Shiaoman Chao ◽  
Yue Jin ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Stem Rust ◽  
Rust Resistance ◽  
Dna Marker ◽  
Stem Rust Resistance ◽  
Rust Resistance Gene ◽  
Stem Rust Resistance Gene ◽  
Chromosome Engineering ◽  
Wheat Stem Rust

RESISTANCE TO PUCCINIA GRAMINIS AVENAE AND P. CORONATA AVENAE IN THE WILD AND CULTIVATED AVENA POPULATIONS OF IRAN, IRAQ AND TURKEY

1980 ◽  
Vol 22 (4) ◽  
pp. 641-649 ◽  
Author(s):  
J. W. Martens ◽  
R. I. H. McKenzie ◽  
D. E. Harder
Keyword(s):  
Resistance Gene ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Crown Rust ◽  
Rust Resistance Gene ◽  
Puccinia Graminis ◽  
Stem Rust Resistance Gene ◽  
Oat Crown Rust ◽  
In The Wild

Tests of over 1400 Avena accessions, comprising eight species, from Iran, Iraq and Turkey have shown that resistance to oat stem rust caused by Puccinia graminis Pers. f. sp. avenae Eriks and E. Henn. occurs infrequently in the Avena populations of the region and was found only in A. barbata Pott ex Link and A. sterilis L. Resistance to oat crown rust caused by P. coronata Cda f. sp. avenae Eriks, was common in A. barbata from Turkey and in A. sterilis from all three countries. The inheritance of resistance conferred by two genes from the region, Pg-15 and Pc-54 is described. Gene Pg-15, the first stem rust resistance gene found in this region, is partially dominant and independent of the Pg-2, Pg-9, Pg-12 and Pg-13 loci. It conferred resistance to races that are important in North America. Gene Pc-54 was also the first crown rust resistance gene to be identified from this region. It was usually recessive, and allelic or closely linked with gene Pc-35.

scholarly journals Allele Sequencing of the Barley Stem Rust Resistance Gene Rpg1 Identifies Regions Relevant to Disease Resistance

2008 ◽  
Vol 98 (8) ◽  
pp. 910-918 ◽  
Author(s):  
A. Mirlohi ◽  
R. Brueggeman ◽  
T. Drader ◽  
J. Nirmala ◽  
B. J. Steffenson ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Resistance Gene ◽  
Stem Rust ◽  
Rust Resistance ◽  
Wild Barley ◽  
Stem Rust Resistance ◽  
Rust Resistance Gene ◽  
Puccinia Graminis ◽  
Stem Rust Resistance Gene ◽  
Specific Pcr

The stem rust resistance gene Rpg1 has protected North American barley cultivars from significant yield losses for over 65 years. The remarkable durability of this gene warrants further study as to its possible origin and allelic variation. Eight Swiss barley (Hordeum vulgare) landraces and eight wild barley (H. vulgare subsp. spontaneum) accessions from diverse geographic regions were analyzed to uncover new alleles of Rpg1 and learn about its possible origin. The two germplasm groups included accessions that were resistant and susceptible to Puccinia graminis f. sp. tritici pathotype MCCF. Allele-specific primers were utilized to amplify 1 kbp overlapping fragments spanning the Rpg1 gene and sequenced if a polymerase chain reaction (PCR) fragment was generated. Variation among the PCR products revealed significant polymorphisms among these Hordeum accessions. Landraces and wild barley accessions susceptible to pathotype MCCF exhibited the highest degree of Rpg1 polymorphism. One resistant landrace (Hv672) and one resistant wild barley accession (WBDC040) yielded all seven Rpg1-specific PCR fragments, but only landrace Hv672 coded for an apparently functional Rpg1 as determined by comparison to previously characterized resistant and susceptible alleles and also resistance to HKHJ, a stem rust pathotype that can specifically detect Rpg1 in the presence of other resistance genes. Accessions resistant to stem rust pathotype MCCF, but completely lacking Rpg1-specific PCR amplification and hybridization with an Rpg1-specific probe, suggested the presence of stem rust resistant gene(s) different from Rpg1 in the Hordeum germplasm pool. Some Rpg1 alleles that retained the ability to autophosphorylate did not confer resistance to Puccinia graminis f. sp. tritici pathotype MCCF, confirming our previous observations that autophosphorylation is essential, but not sufficient for disease resistance. Thus, the RPG1 protein plays a complex role in the stem rust disease resistance-signaling pathway.

scholarly journals Mapping of SrTm4, a Recessive Stem Rust Resistance Gene from Diploid Wheat Effective to Ug99

2015 ◽  
Vol 105 (10) ◽  
pp. 1347-1354 ◽  
Author(s):  
Jordan Briggs ◽  
Shisheng Chen ◽  
Wenjun Zhang ◽  
Sarah Nelson ◽  
Jorge Dubcovsky ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Stem Rust ◽  
Rust Resistance ◽  
Wheat Breeding ◽  
Stem Rust Resistance ◽  
Rust Resistance Gene ◽  
Diploid Wheat ◽  
Stem Rust Resistance Gene ◽  
Wheat Stem Rust ◽  
Stem Rust Resistance Genes

Race TTKSK (or Ug99) of Puccinia graminis f. sp. tritici, the causal agent of wheat stem rust, is a serious threat to wheat production worldwide. Diploid wheat, Triticum monococcum (genome Am), has been utilized previously for the introgression of stem rust resistance genes Sr21, Sr22, and Sr35. Multipathotype seedling tests of biparental populations demonstrated that T. monococcum accession PI 306540 collected in Romania contains a recessive resistance gene effective to all P. graminis f. sp. tritici races screened, including race TTKSK. We will refer to this gene as SrTm4, which is the fourth stem rust resistance gene characterized from T. monococcum. Using two mapping populations derived from crosses of PI 272557 × PI 306540 and G3116 × PI 306540, we mapped SrTm4 on chromosome arm 2AmL within a 2.1 cM interval flanked by sequence-tagged markers BQ461276 and DR732348, which corresponds to a 240-kb region in Brachypodium chromosome 5. The eight microsatellite and nine sequence-tagged markers linked to SrTm4 will facilitate the introgression and accelerate the deployment of SrTm4-mediated Ug99 resistance in wheat breeding programs.

Isolation of wheat–rye 1RS recombinants that break the linkage between the stem rust resistance gene SrR and secalin

Genome ◽  
2008 ◽  
Vol 51 (5) ◽  
pp. 341-349 ◽  
Author(s):  
D. Ratna Anugrahwati ◽  
Kenneth W. Shepherd ◽  
Dawn C. Verlin ◽  
Peng Zhang ◽  
Ghader Mirzaghaderi ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Stem Rust ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Rust Resistance Gene ◽  
Stem Rust Resistance Gene
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