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Theoretical and Applied Genetics

, Volume 123, Issue 4, pp 615–623 | Cite as

A multiple resistance locus on chromosome arm 3BS in wheat confers resistance to stem rust (Sr2), leaf rust (Lr27) and powdery mildew

  • R. Mago
  • L. Tabe
  • R. A. McIntosh
  • Z. Pretorius
  • R. Kota
  • E. Paux
  • T. Wicker
  • J. Breen
  • E. S. Lagudah
  • J. G. Ellis
  • W. SpielmeyerEmail author
Original Paper

Abstract

Sr2 is the only known durable, race non-specific adult plant stem rust resistance gene in wheat. The Sr2 gene was shown to be tightly linked to the leaf rust resistance gene Lr27 and to powdery mildew resistance. An analysis of recombinants and mutants suggests that a single gene on chromosome arm 3BS may be responsible for resistance to these three fungal pathogens. The resistance functions of the Sr2 locus are compared and contrasted with those of the adult plant resistance gene Lr34.

Keywords

Powdery Mildew Leaf Rust Rust Resistance Stem Rust Chinese Spring 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We thank Xiaodi Xia and Sutha Chandramohan for their excellent technical assistance. We acknowledge support from Grains Research Development Corporation (GRDC) which is co-funding rust research at CSIRO. We thank Dr Jaroslav Dolezel, Dr Hana Simkova and Dr Catherine Feuillet, who facilitated early access to the chromosome 3B-specific BAC library and 3B physical map information, and Prof Rudi Appels for coordinating the sequencing and annotation of the BAC clones.

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • R. Mago
    • 1
  • L. Tabe
    • 1
  • R. A. McIntosh
    • 2
  • Z. Pretorius
    • 5
  • R. Kota
    • 1
  • E. Paux
    • 4
  • T. Wicker
    • 3
  • J. Breen
    • 6
  • E. S. Lagudah
    • 1
  • J. G. Ellis
    • 1
  • W. Spielmeyer
    • 1
    Email author
  1. 1.CSIRO Plant IndustryCanberraAustralia
  2. 2.University of Sydney Plant Breeding Institute CobbittyCamdenAustralia
  3. 3.Institute of Plant BiologyUniversity of ZurichZurichSwitzerland
  4. 4.Institut National de la Recherche Agronomique, Universite Blaise Pascal, Unite Mixte de Recherche 1095 Genetics Diversity and Ecophysiology of CerealsClermont-FerrandFrance
  5. 5.Department of Plant SciencesUniversity of the Free StateBloemfonteinSouth Africa
  6. 6.Centre for Comparative GenomicsMurdoch UniversityMurdochWestern Australia

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