Specificity of a Rust Resistance Suppressor on 7DL in the Spring Wheat Cultivar Canthatch.
Identifieur interne : 000476 ( Main/Corpus ); précédent : 000475; suivant : 000477Specificity of a Rust Resistance Suppressor on 7DL in the Spring Wheat Cultivar Canthatch.
Auteurs : Mina Talajoor ; Yue Jin ; Anmin Wan ; Xianming Chen ; Sridhar Bhavani ; Linda Tabe ; Evans Lagudah ; Li HuangSource :
- Phytopathology [ 0031-949X ] ; 2015.
English descriptors
- KwdEn :
- Basidiomycota (physiology), Chromosome Mapping (MeSH), Chromosomes, Plant (genetics), Crosses, Genetic (MeSH), Disease Resistance (MeSH), Genes, Plant (genetics), Genes, Suppressor (MeSH), Genetic Linkage (MeSH), Genetic Markers (MeSH), Phenotype (MeSH), Plant Diseases (immunology), Plant Diseases (microbiology), Plant Leaves (genetics), Plant Leaves (immunology), Plant Leaves (microbiology), Plant Stems (genetics), Plant Stems (immunology), Plant Stems (microbiology), Species Specificity (MeSH), Triticum (genetics), Triticum (immunology), Triticum (microbiology).
- MESH :
- chemical : Genetic Markers.
- genetics : Chromosomes, Plant, Genes, Plant, Plant Leaves, Plant Stems, Triticum.
- immunology : Plant Diseases, Plant Leaves, Plant Stems, Triticum.
- microbiology : Plant Diseases, Plant Leaves, Plant Stems, Triticum.
- physiology : Basidiomycota.
- Chromosome Mapping, Crosses, Genetic, Disease Resistance, Genes, Suppressor, Genetic Linkage, Phenotype, Species Specificity.
Abstract
The spring wheat 'Canthatch' has been shown to suppress stem rust resistance genes in the background due to the presence of a suppressor gene located on the long arm of chromosome 7D. However, it is unclear whether the suppressor also suppresses resistance genes against leaf rust and stripe rust. In this study, we investigated the specificity of the resistance suppression. To determine whether the suppression is genome origin specific, chromosome location specific, or rust species or race specific, we introduced 11 known rust resistance genes into the Canthatch background, including resistance to leaf, stripe, or stem rusts, originating from A, B, or D genomes and located on different chromosome homologous groups. F1 plants of each cross were tested with the corresponding rust race, and the infection types were scored and compared with the parents. Our results show that the Canthatch 7DL suppressor only suppressed stem rust resistance genes derived from either the A or B genome, and the pattern of the suppression is gene specific and independent of chromosomal location.
DOI: 10.1094/PHYTO-09-14-0261-R
PubMed: 25870922
Links to Exploration step
pubmed:25870922Le document en format XML
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<author><name sortKey="Talajoor, Mina" sort="Talajoor, Mina" uniqKey="Talajoor M" first="Mina" last="Talajoor">Mina Talajoor</name>
<affiliation><nlm:affiliation>First and eighth authors: Montana State University, Department of Plant Sciences and Plant Pathology, Bozeman 59717-3150; second author: Cereal Disease Laboratory, United State Department of Agriculture-Agricultural Research Service (USDA-ARS), St. Paul, MN 55108; third and fourth authors: Wheat Genetics, Physiology, Quality, and Disease Research Unit, USDA-ARS, Pullman, WA 99164-6430; fifth author: International Maize and Wheat Improvement Center (CIMMYT), ICRAF House, United Nations Avenue, Gigiri, P.O. Box 1041, Village Market 00621, Nairobi, Kenya; and sixth and seventh authors: CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, Australia.</nlm:affiliation>
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<term>Crosses, Genetic (MeSH)</term>
<term>Disease Resistance (MeSH)</term>
<term>Genes, Plant (genetics)</term>
<term>Genes, Suppressor (MeSH)</term>
<term>Genetic Linkage (MeSH)</term>
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<term>Plant Diseases (immunology)</term>
<term>Plant Diseases (microbiology)</term>
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<term>Plant Leaves (immunology)</term>
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<term>Plant Stems (immunology)</term>
<term>Plant Stems (microbiology)</term>
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<term>Triticum (genetics)</term>
<term>Triticum (immunology)</term>
<term>Triticum (microbiology)</term>
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<front><div type="abstract" xml:lang="en">The spring wheat 'Canthatch' has been shown to suppress stem rust resistance genes in the background due to the presence of a suppressor gene located on the long arm of chromosome 7D. However, it is unclear whether the suppressor also suppresses resistance genes against leaf rust and stripe rust. In this study, we investigated the specificity of the resistance suppression. To determine whether the suppression is genome origin specific, chromosome location specific, or rust species or race specific, we introduced 11 known rust resistance genes into the Canthatch background, including resistance to leaf, stripe, or stem rusts, originating from A, B, or D genomes and located on different chromosome homologous groups. F1 plants of each cross were tested with the corresponding rust race, and the infection types were scored and compared with the parents. Our results show that the Canthatch 7DL suppressor only suppressed stem rust resistance genes derived from either the A or B genome, and the pattern of the suppression is gene specific and independent of chromosomal location. </div>
</front>
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<Abstract><AbstractText>The spring wheat 'Canthatch' has been shown to suppress stem rust resistance genes in the background due to the presence of a suppressor gene located on the long arm of chromosome 7D. However, it is unclear whether the suppressor also suppresses resistance genes against leaf rust and stripe rust. In this study, we investigated the specificity of the resistance suppression. To determine whether the suppression is genome origin specific, chromosome location specific, or rust species or race specific, we introduced 11 known rust resistance genes into the Canthatch background, including resistance to leaf, stripe, or stem rusts, originating from A, B, or D genomes and located on different chromosome homologous groups. F1 plants of each cross were tested with the corresponding rust race, and the infection types were scored and compared with the parents. Our results show that the Canthatch 7DL suppressor only suppressed stem rust resistance genes derived from either the A or B genome, and the pattern of the suppression is gene specific and independent of chromosomal location. </AbstractText>
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