MelampsoraV2, Main, Exploration, bibRecord, 000A79

A sensitive real-time PCR assay for the detection of the two Melampsora medusae formae speciales on infected poplar leaves

Identifieur interne : 000A79 ( Main/Exploration ); précédent : 000A78; suivant : 000A80

A sensitive real-time PCR assay for the detection of the two Melampsora medusae formae speciales on infected poplar leaves

Auteurs : Anne-Laure Boutigny [France] ; Cécile Guinet [France] ; Agathe Vialle [Canada] ; Richard Hamelin [Canada] ; Pascal Frey [France] ; Renaud Ioos [France]

Source :

European Journal of Plant Pathology [ 0929-1873 ] ; 2013.

RBID : ISTEX:2A44CF58D7F89933C494978299346133BA305B8E

English descriptors

mix :
- FUNGUS, HYBRID, LARICI-POPULINA, Melampsora, Poplar rust, Quarantine pathogen, Real-time PCR, XCOLUMBIANA.

Abstract

Abstract: Melampsora medusae is a quarantine fungus in the European Union (EU) that causes a damaging leaf rust disease on poplars. Two formae speciales of the pathogen can be distinguished, M. medusae f. sp. deltoidae and M. medusae f. sp. tremuloidae, but the EU plant health directive 2000/29/EC currently in force does not make the distinction between them. EU countries must have the ability to detect and identify rapidly the introduction of these quarantine fungi and to conduct extensive surveys in case of outbreaks. Efficient detection tools are thus needed. In this study, a sensitive real-time PCR assay was developed to detect the presence of M. medusae in poplar leaf samples. A unique primer/hydrolysis probe combination targeting both formae speciales was designed using species-specific polymorphisms observed within the internal transcribed spacer region. An additional primer/hydrolysis probe combination was designed from a region of the 28S rDNA that is highly conserved in the genus Melampsora and used in a separate real-time PCR assay in order to check the quality of the DNA extracted from Melampsora urediniospores. The test developed demonstrated a high sensitivity since it enables the reproducible detection of two M. medusae urediniospore in a mixture of 2 mg of urediniospores (ca 800 000 urediniospores) of other Melampsora species. This new real-time PCR tool should be useful for laboratories in charge of official analyses since it has many advantages over the techniques currently used to monitor this quarantine pathogen in Europe.

Url:

DOI: 10.1007/s10658-013-0180-0

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">Abstract: Melampsora medusae is a quarantine fungus in the European Union (EU) that causes a damaging leaf rust disease on poplars. Two formae speciales of the pathogen can be distinguished, M. medusae f. sp. deltoidae and M. medusae f. sp. tremuloidae, but the EU plant health directive 2000/29/EC currently in force does not make the distinction between them. EU countries must have the ability to detect and identify rapidly the introduction of these quarantine fungi and to conduct extensive surveys in case of outbreaks. Efficient detection tools are thus needed. In this study, a sensitive real-time PCR assay was developed to detect the presence of M. medusae in poplar leaf samples. A unique primer/hydrolysis probe combination targeting both formae speciales was designed using species-specific polymorphisms observed within the internal transcribed spacer region. An additional primer/hydrolysis probe combination was designed from a region of the 28S rDNA that is highly conserved in the genus Melampsora and used in a separate real-time PCR assay in order to check the quality of the DNA extracted from Melampsora urediniospores. The test developed demonstrated a high sensitivity since it enables the reproducible detection of two M. medusae urediniospore in a mixture of 2 mg of urediniospores (ca 800 000 urediniospores) of other Melampsora species. This new real-time PCR tool should be useful for laboratories in charge of official analyses since it has many advantages over the techniques currently used to monitor this quarantine pathogen in Europe.</div>
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A sensitive real-time PCR assay for the detection of the two Melampsora medusae formae speciales on infected poplar leaves

A sensitive real-time PCR assay for the detection of the two Melampsora medusae formae speciales on infected poplar leaves

Source :

English descriptors

Abstract

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

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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