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Dissection of quantitative and durable leaf rust resistance in Swiss winter wheat reveals a major resistance QTL in the Lr34 chromosomal region.
Theor Appl Genet. 2004 Feb; 108(3):477-84.TA

Abstract

The Swiss winter bread wheat cv. 'Forno' has a highly effective, durable and quantitative leaf rust (Puccinia triticina Eriks.) resistance which is associated with leaf tip necrosis (LTN). We studied 240 single seed descent lines of an 'ArinaxForno' F(5:7)population to identify and map quantitative trait loci (QTLs) for leaf rust resistance and LTN. Percentage of infected leaf area (%) and the response to infection (RI) were evaluated in seven field trials and were transformed to the area under the disease progress curves (AUDPC). Using composite interval mapping and LOD >4.4, we identified eight chromosomal regions specifically associated with resistance. The largest and most consistent leaf rust resistance locus was identified on the short arm of chromosome 7D (32.6% of variance explained for AUDPC_% and 42.6% for AUDPC_RI) together with the major QTL for LTN (R(2)=55.6%) in the same chromosomal region as Lr34 (Xgwm295). A second major leaf rust resistance QTL (R(2)=28% and 31.5%, respectively) was located on chromosome arm 1BS close to Xgwm604 and was not associated with LTN. Additional minor QTLs for LTN (2DL, 3DL, 4BS and 5AL) and leaf rust resistance were identified. These latter QTLs might correspond to the leaf rust resistance genes Lr2 or Lr22 (2DS) and Lr14a (7BL).

Authors+Show Affiliations

Schnurbusch T
Institute of Plant Biology, University of Zürich, Zollikerstrasse 107, 8008, Zürich, Switzerland.
Paillard S
No affiliation info available
Schori A
No affiliation info available
Messmer M
No affiliation info available
Schachermayr G
No affiliation info available
Winzeler M
No affiliation info available
Keller B
No affiliation info available

MeSH

BasidiomycotaChromosome MappingImmunity, InnateLod ScorePhenotypePlant DiseasesQuantitative Trait LociTriticum

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

14523520

Citation

Schnurbusch, T, et al. "Dissection of Quantitative and Durable Leaf Rust Resistance in Swiss Winter Wheat Reveals a Major Resistance QTL in the Lr34 Chromosomal Region." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 108, no. 3, 2004, pp. 477-84.
Schnurbusch T, Paillard S, Schori A, et al. Dissection of quantitative and durable leaf rust resistance in Swiss winter wheat reveals a major resistance QTL in the Lr34 chromosomal region. Theor Appl Genet. 2004;108(3):477-84.
Schnurbusch, T., Paillard, S., Schori, A., Messmer, M., Schachermayr, G., Winzeler, M., & Keller, B. (2004). Dissection of quantitative and durable leaf rust resistance in Swiss winter wheat reveals a major resistance QTL in the Lr34 chromosomal region. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 108(3), 477-84.
Schnurbusch T, et al. Dissection of Quantitative and Durable Leaf Rust Resistance in Swiss Winter Wheat Reveals a Major Resistance QTL in the Lr34 Chromosomal Region. Theor Appl Genet. 2004;108(3):477-84. PubMed PMID: 14523520.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dissection of quantitative and durable leaf rust resistance in Swiss winter wheat reveals a major resistance QTL in the Lr34 chromosomal region. AU - Schnurbusch,T, AU - Paillard,S, AU - Schori,A, AU - Messmer,M, AU - Schachermayr,G, AU - Winzeler,M, AU - Keller,B, Y1 - 2003/10/02/ PY - 2003/04/14/received PY - 2003/08/18/accepted PY - 2003/10/3/pubmed PY - 2004/4/9/medline PY - 2003/10/3/entrez SP - 477 EP - 84 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor Appl Genet VL - 108 IS - 3 N2 - The Swiss winter bread wheat cv. 'Forno' has a highly effective, durable and quantitative leaf rust (Puccinia triticina Eriks.) resistance which is associated with leaf tip necrosis (LTN). We studied 240 single seed descent lines of an 'ArinaxForno' F(5:7)population to identify and map quantitative trait loci (QTLs) for leaf rust resistance and LTN. Percentage of infected leaf area (%) and the response to infection (RI) were evaluated in seven field trials and were transformed to the area under the disease progress curves (AUDPC). Using composite interval mapping and LOD >4.4, we identified eight chromosomal regions specifically associated with resistance. The largest and most consistent leaf rust resistance locus was identified on the short arm of chromosome 7D (32.6% of variance explained for AUDPC_% and 42.6% for AUDPC_RI) together with the major QTL for LTN (R(2)=55.6%) in the same chromosomal region as Lr34 (Xgwm295). A second major leaf rust resistance QTL (R(2)=28% and 31.5%, respectively) was located on chromosome arm 1BS close to Xgwm604 and was not associated with LTN. Additional minor QTLs for LTN (2DL, 3DL, 4BS and 5AL) and leaf rust resistance were identified. These latter QTLs might correspond to the leaf rust resistance genes Lr2 or Lr22 (2DS) and Lr14a (7BL). SN - 0040-5752 UR - https://www.unboundmedicine.com/medline/citation/14523520/Dissection_of_quantitative_and_durable_leaf_rust_resistance_in_Swiss_winter_wheat_reveals_a_major_resistance_QTL_in_the_Lr34_chromosomal_region_ DB - PRIME DP - Unbound Medicine ER -