Rust

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Maricelis Acevedo - One of the best experts on this subject based on the ideXlab platform.

  • inheritance and bulked segregant analysis of leaf Rust and stem Rust resistance in durum wheat genotypes
    Phytopathology, 2017
    Co-Authors: Meriem Aoun, J A Kolmer, Matthew N Rouse, Worku Denbel Bulbula, Elias M Elias, Shiaoman Chao, Maricelis Acevedo
    Abstract:

    Leaf Rust, caused by Puccinia triticina, and stem Rust, caused by P. graminis f. sp. tritici, are important diseases of durum wheat. This study determined the inheritance and genomic locations of leaf Rust resistance (Lr) genes to P. triticina race BBBQJ and stem Rust resistance (Sr) genes to P. graminis f. sp. tritici race TTKSK in durum accessions. Eight leaf-Rust-resistant genotypes were used to develop biparental populations. Accessions PI 192051 and PI 534304 were also resistant to P. graminis f. sp. tritici race TTKSK. The resulting progenies were phenotyped for leaf Rust and stem Rust response at seedling stage. The Lr and Sr genes were mapped in five populations using single-nucleotide polymorphisms and bulked segregant analysis. Five leaf-Rust-resistant genotypes carried single dominant Lr genes whereas, in the remaining accessions, there was deviation from the expected segregation ratio of a single dominant Lr gene. Seven genotypes carried Lr genes different from those previously characterized i...

  • inheritance and bulked segregant analysis of leaf Rust and stem Rust resistance in durum wheat genotypes
    Phytopathology, 2017
    Co-Authors: Meriem Aoun, J A Kolmer, Matthew N Rouse, Worku Denbel Bulbula, Elias M Elias, Shiaoman Chao, Maricelis Acevedo
    Abstract:

    Leaf Rust, caused by Puccinia triticina, and stem Rust, caused by P. graminis f. sp. tritici, are important diseases of durum wheat. This study determined the inheritance and genomic locations of leaf Rust resistance (Lr) genes to P. triticina race BBBQJ and stem Rust resistance (Sr) genes to P. graminis f. sp. tritici race TTKSK in durum accessions. Eight leaf-Rust-resistant genotypes were used to develop biparental populations. Accessions PI 192051 and PI 534304 were also resistant to P. graminis f. sp. tritici race TTKSK. The resulting progenies were phenotyped for leaf Rust and stem Rust response at seedling stage. The Lr and Sr genes were mapped in five populations using single-nucleotide polymorphisms and bulked segregant analysis. Five leaf-Rust-resistant genotypes carried single dominant Lr genes whereas, in the remaining accessions, there was deviation from the expected segregation ratio of a single dominant Lr gene. Seven genotypes carried Lr genes different from those previously characterized in durum. The single dominant Lr genes in PI 209274, PI 244061, PI387263, and PI 313096 were mapped to chromosome arms 6BS, 2BS, 6BL, and 6BS, respectively. The Sr gene in PI 534304 mapped to 6AL and is most likely Sr13, while the Sr gene in PI 192051 could be uncharacterized in durum.

Bohun B Kinloch - One of the best experts on this subject based on the ideXlab platform.

  • white pine blister Rust in north america past and prognosis
    Phytopathology, 2003
    Co-Authors: Bohun B Kinloch
    Abstract:

    ABSTRACT After a full century in North America, the blister Rust epidemic has yet to stabilize, continuing to spread into warmer and drier areas previously considered climatically inhospitable. The disease apparently has no environmental limits wherever white pines and Ribes spp. cohabit and will eventually become pandemic. Although much timber value has been lost, more severe long-term damage is disruption caused to ecosystems by altered patterns of natural succession. During the last half of the century just past, development of genetic resistance superceded other direct control measures-mainly Ribes spp. eradication and antibiotics-which proved ineffective and/or unfeasible in large areas of the white pine range, especially in the West. Several mechanisms of complete (major gene) and partial resistance are common to at least several white pine species. Although North American populations of Rust have low genetic variability overall, Rust genotypes with specific virulence to major resistance genes exist in some local demes at high frequencies. The challenge will be to package and deploy resistance genes in ways that will dampen sudden increases in Rust races of wide virulence. New introductions of blister Rust from its gene center in Asia remain the gravest threat to genetic improvement programs.

  • white pine blister Rust in north america past and prognosis
    Phytopathology, 2003
    Co-Authors: Bohun B Kinloch
    Abstract:

    ABSTRACT After a full century in North America, the blister Rust epidemic has yet to stabilize, continuing to spread into warmer and drier areas previously considered climatically inhospitable. The disease apparently has no environmental limits wherever white pines and Ribes spp. cohabit and will eventually become pandemic. Although much timber value has been lost, more severe long-term damage is disruption caused to ecosystems by altered patterns of natural succession. During the last half of the century just past, development of genetic resistance superceded other direct control measures—mainly Ribes spp. eradication and antibiotics—which proved ineffective and/or unfeasible in large areas of the white pine range, especially in the West. Several mechanisms of complete (major gene) and partial resistance are common to at least several white pine species. Although North American populations of Rust have low genetic variability overall, Rust genotypes with specific virulence to major resistance genes exist...

Meriem Aoun - One of the best experts on this subject based on the ideXlab platform.

  • inheritance and bulked segregant analysis of leaf Rust and stem Rust resistance in durum wheat genotypes
    Phytopathology, 2017
    Co-Authors: Meriem Aoun, J A Kolmer, Matthew N Rouse, Worku Denbel Bulbula, Elias M Elias, Shiaoman Chao, Maricelis Acevedo
    Abstract:

    Leaf Rust, caused by Puccinia triticina, and stem Rust, caused by P. graminis f. sp. tritici, are important diseases of durum wheat. This study determined the inheritance and genomic locations of leaf Rust resistance (Lr) genes to P. triticina race BBBQJ and stem Rust resistance (Sr) genes to P. graminis f. sp. tritici race TTKSK in durum accessions. Eight leaf-Rust-resistant genotypes were used to develop biparental populations. Accessions PI 192051 and PI 534304 were also resistant to P. graminis f. sp. tritici race TTKSK. The resulting progenies were phenotyped for leaf Rust and stem Rust response at seedling stage. The Lr and Sr genes were mapped in five populations using single-nucleotide polymorphisms and bulked segregant analysis. Five leaf-Rust-resistant genotypes carried single dominant Lr genes whereas, in the remaining accessions, there was deviation from the expected segregation ratio of a single dominant Lr gene. Seven genotypes carried Lr genes different from those previously characterized i...

  • inheritance and bulked segregant analysis of leaf Rust and stem Rust resistance in durum wheat genotypes
    Phytopathology, 2017
    Co-Authors: Meriem Aoun, J A Kolmer, Matthew N Rouse, Worku Denbel Bulbula, Elias M Elias, Shiaoman Chao, Maricelis Acevedo
    Abstract:

    Leaf Rust, caused by Puccinia triticina, and stem Rust, caused by P. graminis f. sp. tritici, are important diseases of durum wheat. This study determined the inheritance and genomic locations of leaf Rust resistance (Lr) genes to P. triticina race BBBQJ and stem Rust resistance (Sr) genes to P. graminis f. sp. tritici race TTKSK in durum accessions. Eight leaf-Rust-resistant genotypes were used to develop biparental populations. Accessions PI 192051 and PI 534304 were also resistant to P. graminis f. sp. tritici race TTKSK. The resulting progenies were phenotyped for leaf Rust and stem Rust response at seedling stage. The Lr and Sr genes were mapped in five populations using single-nucleotide polymorphisms and bulked segregant analysis. Five leaf-Rust-resistant genotypes carried single dominant Lr genes whereas, in the remaining accessions, there was deviation from the expected segregation ratio of a single dominant Lr gene. Seven genotypes carried Lr genes different from those previously characterized in durum. The single dominant Lr genes in PI 209274, PI 244061, PI387263, and PI 313096 were mapped to chromosome arms 6BS, 2BS, 6BL, and 6BS, respectively. The Sr gene in PI 534304 mapped to 6AL and is most likely Sr13, while the Sr gene in PI 192051 could be uncharacterized in durum.

Asheesh K Singh - One of the best experts on this subject based on the ideXlab platform.

  • stripe Rust and leaf Rust resistance qtl mapping epistatic interactions and co localization with stem Rust resistance loci in spring wheat evaluated over three continents
    Theoretical and Applied Genetics, 2014
    Co-Authors: Asheesh K Singh, R E Knox, R M Depauw, Arti Singh, Richard D Cuthbert, H L Campbell, S Shorter, Sridhar Bhavani
    Abstract:

    Key message In wheat, advantageous gene‑rich or plei‑ otropic regions for stripe, leaf, and stem Rust and epi‑ static interactions between Rust resistance loci should be accounted for in plant breeding strategies. Abstract Leaf Rust (Puccinia triticina Eriks.) and stripe Rust (Puccinia striiformis f. tritici Eriks) contribute to major production losses in many regions worldwide. The objectives of this research were to identify and study epi- static interactions of quantitative trait loci (QTL) for stripe and leaf Rust resistance in a doubled haploid (DH) popu- lation derived from the cross of Canadian wheat cultivars, AC Cadillac and Carberry. The relationship of leaf and stripe Rust resistance QTL that co-located with stem Rust resistance QTL previously mapped in this population was also investigated. The Carberry/AC Cadillac population was genotyped with DArT ® and simple sequence repeat markers. The parents and population were phenotyped for stripe Rust severity and infection response in field Rust nurs- eries in Kenya (Njoro), Canada (Swift Current), and New

Elias M Elias - One of the best experts on this subject based on the ideXlab platform.

  • inheritance and bulked segregant analysis of leaf Rust and stem Rust resistance in durum wheat genotypes
    Phytopathology, 2017
    Co-Authors: Meriem Aoun, J A Kolmer, Matthew N Rouse, Worku Denbel Bulbula, Elias M Elias, Shiaoman Chao, Maricelis Acevedo
    Abstract:

    Leaf Rust, caused by Puccinia triticina, and stem Rust, caused by P. graminis f. sp. tritici, are important diseases of durum wheat. This study determined the inheritance and genomic locations of leaf Rust resistance (Lr) genes to P. triticina race BBBQJ and stem Rust resistance (Sr) genes to P. graminis f. sp. tritici race TTKSK in durum accessions. Eight leaf-Rust-resistant genotypes were used to develop biparental populations. Accessions PI 192051 and PI 534304 were also resistant to P. graminis f. sp. tritici race TTKSK. The resulting progenies were phenotyped for leaf Rust and stem Rust response at seedling stage. The Lr and Sr genes were mapped in five populations using single-nucleotide polymorphisms and bulked segregant analysis. Five leaf-Rust-resistant genotypes carried single dominant Lr genes whereas, in the remaining accessions, there was deviation from the expected segregation ratio of a single dominant Lr gene. Seven genotypes carried Lr genes different from those previously characterized i...

  • inheritance and bulked segregant analysis of leaf Rust and stem Rust resistance in durum wheat genotypes
    Phytopathology, 2017
    Co-Authors: Meriem Aoun, J A Kolmer, Matthew N Rouse, Worku Denbel Bulbula, Elias M Elias, Shiaoman Chao, Maricelis Acevedo
    Abstract:

    Leaf Rust, caused by Puccinia triticina, and stem Rust, caused by P. graminis f. sp. tritici, are important diseases of durum wheat. This study determined the inheritance and genomic locations of leaf Rust resistance (Lr) genes to P. triticina race BBBQJ and stem Rust resistance (Sr) genes to P. graminis f. sp. tritici race TTKSK in durum accessions. Eight leaf-Rust-resistant genotypes were used to develop biparental populations. Accessions PI 192051 and PI 534304 were also resistant to P. graminis f. sp. tritici race TTKSK. The resulting progenies were phenotyped for leaf Rust and stem Rust response at seedling stage. The Lr and Sr genes were mapped in five populations using single-nucleotide polymorphisms and bulked segregant analysis. Five leaf-Rust-resistant genotypes carried single dominant Lr genes whereas, in the remaining accessions, there was deviation from the expected segregation ratio of a single dominant Lr gene. Seven genotypes carried Lr genes different from those previously characterized in durum. The single dominant Lr genes in PI 209274, PI 244061, PI387263, and PI 313096 were mapped to chromosome arms 6BS, 2BS, 6BL, and 6BS, respectively. The Sr gene in PI 534304 mapped to 6AL and is most likely Sr13, while the Sr gene in PI 192051 could be uncharacterized in durum.