MelampsoraV2, France, Analysis, bibRecord, 000213

Potential of Eurasian poplar rust to overcome a major quantitative resistance factor

Identifieur interne : 000213 ( France/Analysis ); précédent : 000212; suivant : 000214

Potential of Eurasian poplar rust to overcome a major quantitative resistance factor

Auteurs : A. Dowkiw [France] ; E. Voisin [France] ; C. Bastien [France]

Source :

Plant pathology [ 0032-0862 ] ; 2010.

RBID : Pascal:10-0239495

Descripteurs français

Pascal (Inist)
- Potentiel, Fitness, Durabilité, Sporulation, Phytopathologie, Populus deltoides, Melampsora larici-populina, Eurasie, Résistance non spécifique, Résistance durable.
mix :
- ADAPTABILITE, EURASIAN POPLAR, MELAMPSORA LARICI-POPULINA, PEUPLIER, POPULUS DELTOIDES, POPULUS TRICHOCARPA, RESISTANCE A LA ROUILLE.

English descriptors

KwdEn :
- Durability, Durable resistance, Eurasia, Fitness, Melampsora larici-populina, Nonspecific resistance, Plant pathology, Populus deltoides, Potential, Sporulation.
mix :
- PARASITIC FITNESS, PRE-ADAPTATION, QUALITATIVE RESISTANCE, RESISTANCE DURABILITY, RESISTANCE EROSION, RUST RESISTANCE, SPORULATION RATE.

Abstract

The effect of R_US, a major quantitative resistance (QR) factor inherited from Populus trichocarpa, was assessed in two Populus deltoides x P. trichocarpa F₁ progenies against eight isolates of Melampsora larici-populina, the causal agent of Eurasian poplar rust. Six isolates were identified on which R_US had no significant effect. The first R_US-defeating isolate identified suggested a pre-existing potential to overcome R_US in the pathogen's populations. The P. deltoides genetic background made no difference either to the ability of a given isolate to overcome R_US or to the relative and absolute aggressiveness of the isolates. This study illustrates how extreme the isolate-specificity of QR can be. It also yields insights into the relationship between size of uredinia and sporulation rate, discussing the epidemiological significance of spore production per mm² uredinium.

Url:

https://hal.inrae.fr/hal-02659366

Affiliations:

Links to Exploration step

Pascal:10-0239495

Le document en format XML

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<term>Melampsora larici-populina</term>
<term>Nonspecific resistance</term>
<term>Plant pathology</term>
<term>Populus deltoides</term>
<term>Potential</term>
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<term>Fitness</term>
<term>Durabilité</term>
<term>Sporulation</term>
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<term>Populus deltoides</term>
<term>Melampsora larici-populina</term>
<term>Eurasie</term>
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<term>SPORULATION RATE</term>
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<term>POPULUS TRICHOCARPA</term>
<term>RESISTANCE A LA ROUILLE</term>
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<front><div type="abstract" xml:lang="en">The effect of R<sub>US</sub>
, a major quantitative resistance (QR) factor inherited from Populus trichocarpa, was assessed in two Populus deltoides x P. trichocarpa F<sub>1</sub>
 progenies against eight isolates of Melampsora larici-populina, the causal agent of Eurasian poplar rust. Six isolates were identified on which R<sub>US</sub>
 had no significant effect. The first R<sub>US</sub>
-defeating isolate identified suggested a pre-existing potential to overcome R<sub>US</sub>
 in the pathogen's populations. The P. deltoides genetic background made no difference either to the ability of a given isolate to overcome R<sub>US</sub>
 or to the relative and absolute aggressiveness of the isolates. This study illustrates how extreme the isolate-specificity of QR can be. It also yields insights into the relationship between size of uredinia and sporulation rate, discussing the epidemiological significance of spore production per mm<sup>2</sup>
 uredinium.</div>
</front>
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<name sortKey="Bastien, C" sort="Bastien, C" uniqKey="Bastien C" first="C." last="Bastien">C. Bastien</name>
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Potential of Eurasian poplar rust to overcome a major quantitative resistance factor

Potential of Eurasian poplar rust to overcome a major quantitative resistance factor

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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