Volume 139, Issue 2 p. 263-271
ORIGINAL ARTICLE

Double dose efficiency of the yellow rust resistance gene Yr17 in bread wheat lines

Olivier Coriton

Corresponding Author

Olivier Coriton

UMR 1349 IGEPP, BP 35327, INRA, Le Rheu cedex, France

Correspondece

Olivier Coriton, INRA UMR 1349 IGEPP, BP 35327, F-35653 Le Rheu cedex, France.

Email: olivier.coriton@inra.fr

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Joseph Jahier

Joseph Jahier

UMR 1349 IGEPP, BP 35327, INRA, Le Rheu cedex, France

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Marc Leconte

Marc Leconte

UMR BIOGER, AgroParisTech, INRA,, Université Paris-Saclay, Thiverval-Grignon, France

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Virginie Huteau

Virginie Huteau

UMR 1349 IGEPP, BP 35327, INRA, Le Rheu cedex, France

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Gwenn Trotoux

Gwenn Trotoux

UMR 1349 IGEPP, BP 35327, INRA, Le Rheu cedex, France

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Françoise Dedryver

Françoise Dedryver

UMR 1349 IGEPP, BP 35327, INRA, Le Rheu cedex, France

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Claude de-Vallavieille-Pope

Claude de-Vallavieille-Pope

UMR BIOGER, AgroParisTech, INRA,, Université Paris-Saclay, Thiverval-Grignon, France

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First published: 25 October 2019
Citations: 8

Abstract

Yellow rust, caused by Puccinia striiformis f. sp. tritici, is one of the most severe wheat disease worldwide. Crop losses have ranged from 10% to 70% and up to 100% in extreme conditions. Eighty-two resistance genes, designated Yr, have been identified. Among them, Yr17 derived from Aegilops ventricosa and located on chromosome 2A has been widely used in wheat breeding. However, it had been overcome already. Through recombination of the Ae. ventricosa Yr17-carrying 6Nv chromosome with 2D of wheat, we introduced Yr17 onto chromosome 2D. Then, lines carrying Yr17 on both 2A and 2D were generated. Seedlings of the latter, as well as those carrying a single dose of Yr17 either on 2A or on 2D, were inoculated with virulent or avirulent strains on wheat seedlings. The different genotypes were fully susceptible for the two pathotypes that are virulent on Yr17. In the case of avirulent pathotypes, the Yr17 double dose lines were fully resistant, while those with the Yr17 gene only on either 2A or 2D had intermediate resistance reactions towards one or the other or both pathotypes.

CONFLICT OF INTEREST

The authors declare no conflict of interest.

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