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Resistance gene-analog polymorphism markers co-segregating with the YR5 gene for resistance to wheat stripe rust.
Theor Appl Genet. 2003 Feb; 106(4):636-43.TA

Abstract

The Yr5 gene confers resistance to all races of the stripe rust pathogen (Puccinia striiformis f. sp. tritici) of wheat in the United States. To develop molecular markers for Yr5, a BC(7):F(3) population was developed by backcrossing the Yr5 donor ' Triticum spelta album' (TSA) with the recurrent parent 'Avocet Susceptible' (AVS). Seedlings of the Yr5 near-isogenic lines (AVS/6* Yr5), AVS, TSA, and the BC(7):F(3) lines were tested with North American races of P. striiformis f. sp. tritici under controlled greenhouse conditions. The single gene was confirmed by a 1:2:1 segregation ratio for homozygous-resistant, heterozygous and homozygous-susceptible BC(7):F(3) lines. Genomic DNA was extracted from the parents (the Yr5 near-isogenic line and AVS) and 202 BC(7):F(3) lines. The resistance gene-analog polymorphism (RGAP) technique was used to identify molecular markers. The parents and the homozygous-resistant and homozygous-susceptible BC(7):F(3) bulks were used to identify putative RGAP markers for Yr5. Association of the markers with Yr5 was determined using segregation analysis with DNA from the individual BC(7):F(3) lines. Of 16 RGAP markers confirmed by segregation analysis with 109 BC(7):F(3) lines, and nine of the markers confirmed with an additional 93 BC(7):F(3) lines, three markers co-segregated with the resistance allele and three markers co-segregated with the susceptibility allele at the Yr5 locus. The other four markers were tightly linked to the locus. Analysis of a set of Chinese Spring nulli-tetrasomic lines with three markers that co-segregated with, or were linked to, the susceptibility allele confirmed that the Yr5 locus is on chromosome 2B. Of five RGAP markers that were cloned and sequenced, markers Xwgp-17 and Xwgp-18 that co-segregated with the Yr5 locus were co-dominant and had 98% homology with each other in both DNA and translated amino-acid sequences. The two markers had 97% homology with a resistance gene-like sequence from Aegilops ventricosa and had significant homology with many known plant resistance genes, resistance gene analogs and expressed sequence tags (ESTs) from wheat and other plant species. The markers Xwgp-17 and Xwgp-18 also had significant homology with the NB-ARC domain that is in several genes for plant resistance to diseases, nematode cell death and human apoptotic signaling. These markers should be useful to clone Yr5 and combine Yr5 with other genes for durable and superior resistance for the control of stripe rust.

Authors+Show Affiliations

Department of Plant Pathology, Washington State University, USA.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

12595992

Citation

Yan, G P., et al. "Resistance Gene-analog Polymorphism Markers Co-segregating With the YR5 Gene for Resistance to Wheat Stripe Rust." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 106, no. 4, 2003, pp. 636-43.
Yan GP, Chen XM, Line RF, et al. Resistance gene-analog polymorphism markers co-segregating with the YR5 gene for resistance to wheat stripe rust. Theor Appl Genet. 2003;106(4):636-43.
Yan, G. P., Chen, X. M., Line, R. F., & Wellings, C. R. (2003). Resistance gene-analog polymorphism markers co-segregating with the YR5 gene for resistance to wheat stripe rust. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 106(4), 636-43.
Yan GP, et al. Resistance Gene-analog Polymorphism Markers Co-segregating With the YR5 Gene for Resistance to Wheat Stripe Rust. Theor Appl Genet. 2003;106(4):636-43. PubMed PMID: 12595992.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Resistance gene-analog polymorphism markers co-segregating with the YR5 gene for resistance to wheat stripe rust. AU - Yan,G P, AU - Chen,X M, AU - Line,R F, AU - Wellings,C R, Y1 - 2002/11/02/ PY - 2002/04/25/received PY - 2002/06/03/accepted PY - 2003/2/22/pubmed PY - 2003/9/30/medline PY - 2003/2/22/entrez SP - 636 EP - 43 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor Appl Genet VL - 106 IS - 4 N2 - The Yr5 gene confers resistance to all races of the stripe rust pathogen (Puccinia striiformis f. sp. tritici) of wheat in the United States. To develop molecular markers for Yr5, a BC(7):F(3) population was developed by backcrossing the Yr5 donor ' Triticum spelta album' (TSA) with the recurrent parent 'Avocet Susceptible' (AVS). Seedlings of the Yr5 near-isogenic lines (AVS/6* Yr5), AVS, TSA, and the BC(7):F(3) lines were tested with North American races of P. striiformis f. sp. tritici under controlled greenhouse conditions. The single gene was confirmed by a 1:2:1 segregation ratio for homozygous-resistant, heterozygous and homozygous-susceptible BC(7):F(3) lines. Genomic DNA was extracted from the parents (the Yr5 near-isogenic line and AVS) and 202 BC(7):F(3) lines. The resistance gene-analog polymorphism (RGAP) technique was used to identify molecular markers. The parents and the homozygous-resistant and homozygous-susceptible BC(7):F(3) bulks were used to identify putative RGAP markers for Yr5. Association of the markers with Yr5 was determined using segregation analysis with DNA from the individual BC(7):F(3) lines. Of 16 RGAP markers confirmed by segregation analysis with 109 BC(7):F(3) lines, and nine of the markers confirmed with an additional 93 BC(7):F(3) lines, three markers co-segregated with the resistance allele and three markers co-segregated with the susceptibility allele at the Yr5 locus. The other four markers were tightly linked to the locus. Analysis of a set of Chinese Spring nulli-tetrasomic lines with three markers that co-segregated with, or were linked to, the susceptibility allele confirmed that the Yr5 locus is on chromosome 2B. Of five RGAP markers that were cloned and sequenced, markers Xwgp-17 and Xwgp-18 that co-segregated with the Yr5 locus were co-dominant and had 98% homology with each other in both DNA and translated amino-acid sequences. The two markers had 97% homology with a resistance gene-like sequence from Aegilops ventricosa and had significant homology with many known plant resistance genes, resistance gene analogs and expressed sequence tags (ESTs) from wheat and other plant species. The markers Xwgp-17 and Xwgp-18 also had significant homology with the NB-ARC domain that is in several genes for plant resistance to diseases, nematode cell death and human apoptotic signaling. These markers should be useful to clone Yr5 and combine Yr5 with other genes for durable and superior resistance for the control of stripe rust. SN - 0040-5752 UR - https://www.unboundmedicine.com/medline/citation/12595992/Resistance_gene_analog_polymorphism_markers_co_segregating_with_the_YR5_gene_for_resistance_to_wheat_stripe_rust_ DB - PRIME DP - Unbound Medicine ER -