scholarly journals High-Density Mapping of an Adult-Plant Stripe Rust Resistance Gene YrBai in Wheat Landrace Baidatou Using the Whole Genome DArTseq and SNP Analysis

2018 ◽  
Vol 9 ◽  
Author(s):  
Qiang Li ◽  
Juan Guo ◽  
Kaixiang Chao ◽  
Jinye Yang ◽  
Weiyun Yue ◽  
...  
Plant Disease ◽  
2018 ◽  
Vol 102 (2) ◽  
pp. 413-420 ◽  
Author(s):  
N. Qureshi ◽  
H. S. Bariana ◽  
P. Zhang ◽  
R. McIntosh ◽  
U. K. Bansal ◽  
...  

The Australian continent was free from wheat stripe rust caused by Puccinia striiformis f. sp. tritici until exotic incursions occurred in 1979 and 2002. The 2002 incursion enabled the identification of a new stripe rust resistance gene (Yr34) in the advanced breeding line WAWHT2046. In this study, we developed and validated markers closely linked with Yr34, which is located in the distal region in the long arm of chromosome 5A. Four kompetitive allele-specific polymerase chain reaction (KASP) and three sequence-tagged site (STS) markers derived from the International Wheat Genome Sequencing Consortium RefSeq v1.0 scaffold-77836 cosegregated with Yr34. Markers sun711, sun712, sun725, sunKASP_109, and sunKASP_112 were shown to be suitable for marker-assisted selection in a validation panel of 71 Australian spring wheat genotypes, with the exception of cultivar Orion that carried the Yr34-linked alleles for sunKASP_109 and sunKASP_112. Markers previously reported to be linked with adult plant stripe rust resistance gene Yr48 also cosegregated with Yr34. Wheat genotypes carrying Yr34 and Yr48 produced identical haplotypes for the Yr34-linked markers identified in this study and those previously reported to be linked with Yr48. Phenotypic testing of genotypes carrying Yr34 and Yr48 showed that both genes conferred similar seedling responses to pre-2002 and post-2002 P. striiformis f. sp. tritici pathotypes. Further testing of 600 F2 plants from a cross between WAWHT2046 and RIL143 (Yr48) with P. striiformis f. sp. tritici pathotype 134 E16A+Yr17+Yr27+ failed to reveal any susceptible segregants. Our results strongly suggest that Yr34 and Yr48 are the same gene, and that Yr48 should be considered a synonym of Yr34.


2016 ◽  
Vol 36 (7) ◽  
Author(s):  
Harbans Bariana ◽  
Kerrie Forrest ◽  
Naeela Qureshi ◽  
Hanif Miah ◽  
Matthew Hayden ◽  
...  

2019 ◽  
Vol 29 (1) ◽  
pp. 47-55 ◽  
Author(s):  
Priti Sharma ◽  
Preeni Bawa ◽  
Bharat Yadav ◽  
Parampreet Kaur ◽  
Suruchi Jindal ◽  
...  

Euphytica ◽  
2021 ◽  
Vol 217 (6) ◽  
Author(s):  
Maryam Tariq ◽  
Javed Iqbal Mirza ◽  
Shaukat Hussain ◽  
Naeela Qureshi ◽  
Kerrie Forrest ◽  
...  

Author(s):  
Shisheng Chen ◽  
Joshua Hegarty ◽  
Tao Shen ◽  
Lei Hua ◽  
Hongna Li ◽  
...  

AbstractKey messageThe stripe rust resistance geneYr34 was transferred to polyploid wheat chromosome 5AL from T. monococcumand has been used for over two centuries.Wheat stripe (or yellow) rust, caused by Puccinia striiformis f. sp. tritici (Pst), is currently among the most damaging fungal diseases of wheat worldwide. In this study, we report that the stripe rust resistance gene Yr34 (synonym Yr48) is located within a distal segment of the cultivated Triticum monococcum subsp. monococcum chromosome 5AmL translocated to chromosome 5AL in polyploid wheat. The diploid wheat species Triticum monococcum (genome AmAm) is closely related to T. urartu (donor of the A genome to polyploid wheat) and has good levels of resistance against the stripe rust pathogen. When present in hexaploid wheat, the T. monococcum Yr34 resistance gene confers a moderate level of resistance against virulent Pst races present in California and the virulent Chinese race CYR34. In a survey of 1,442 common wheat genotypes, we identified 5AmL translocations of fourteen different lengths in 17.5% of the accessions, with higher frequencies in Europe than in other continents. The old European wheat variety “Mediterranean” was identified as a putative source of this translocation, suggesting that Yr34 has been used for over 200 years. Finally, we designed diagnostic CAPS and sequenced-based markers that will be useful to accelerate the deployment of Yr34 in wheat breeding programs to improve resistance to this devastating pathogen.


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