Quantitative inoculation of willow rust Melampsora larici-epitea with the mycoparasite Sphaerellopsis filum (teleomorph Eudarluca caricis)
Identifieur interne : 001296 ( Main/Exploration ); précédent : 001295; suivant : 001297Quantitative inoculation of willow rust Melampsora larici-epitea with the mycoparasite Sphaerellopsis filum (teleomorph Eudarluca caricis)
Auteurs : Ming H. Pei [Royaume-Uni] ; Tom Hunter [Royaume-Uni] ; Carmen Ruiz [Royaume-Uni] ; Carlos Bayon [Royaume-Uni] ; Judy Harris [Royaume-Uni]Source :
- Mycological research : (Print) [ 0953-7562 ] ; 2003.
Descripteurs français
- KwdFr :
- Antibiose (MeSH), Basidiomycota (pathogénicité), Basidiomycota (physiologie), Champignons (pathogénicité), Champignons (physiologie), Facteurs temps (MeSH), Feuilles de plante (microbiologie), Maladies des plantes (microbiologie), Numération de colonies microbiennes (MeSH), Salix (microbiologie), Spores fongiques (croissance et développement), Spores fongiques (physiologie).
- MESH :
- croissance et développement : Spores fongiques.
- microbiologie : Feuilles de plante, Maladies des plantes, Salix.
- pathogénicité : Basidiomycota, Champignons.
- physiologie : Basidiomycota, Champignons, Spores fongiques.
- Pascal (Inist)
English descriptors
- KwdEn :
- Antibiosis (MeSH), Basidiomycota (pathogenicity), Basidiomycota (physiology), Biological control, Colony Count, Microbial (MeSH), Conidia, Dose activity relation, Fungi (pathogenicity), Fungi (physiology), Infection, Inoculation, Inoculum, Plant Diseases (microbiology), Plant Leaves (microbiology), Plant tissue disc, Salix, Salix (microbiology), Spores, Fungal (growth & development), Spores, Fungal (physiology), Time Factors (MeSH), Treatment efficiency.
- MESH :
- growth & development : Spores, Fungal.
- microbiology : Plant Diseases, Plant Leaves, Salix.
- pathogenicity : Basidiomycota, Fungi.
- physiology : Basidiomycota, Fungi, Spores, Fungal.
- Antibiosis, Colony Count, Microbial, Time Factors.
Abstract
The mycoparasite Sphaerellopsis filum (teleomorph Eudarluca caricis) was applied simultaneously with Melampsora larici-epitea on to willow leaf discs using eight concentrations of conidia. Inoculum densities were quantified and the numbers of uredinia of the rust, pycnidia and conidia of S. filum and rust spores produced per leaf disc were measured 13 d after inoculation (first assessment). Higher S. filum inoculum densities resulted in more rust uredinia being infected, but did not reduce the number of uredinia produced. The ratios of infected rust pustules: S. filum conidia applied were in a range of 0.25-0.31 when less than 20 S. filum spores were inoculated on to a leaf disc (0.95 cm2). Suppressive effects of S. filum on rust spore production were more obvious in the second assessment, carried out 23 d after inoculation. Inoculum densities of S. filum were significantly (P<0.001) correlated with the frequency of uredinia infected (% variance accounted for [VAF] = 85.8), the number of S. filum pycnidia (%VAF=81.4), S. filum spores produced (%VAF = 72.3) and rust spore production (%VAF = 48.6). Rust spore production was significantly (P < 0.001) negatively correlated with the frequency of uredinia infected (%VAF = 51.1), the number of S. filum pycnidia (%VAF = 42.0) and the number of S. filum spores produced (%VAF = 40.6). The best correlation was found between the number of pycnidia and the number of S. filum spores produced ( %VAF = 88.8).
Affiliations:
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Le document en format XML
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<series><title level="j" type="main">Mycological research : (Print)</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antibiosis (MeSH)</term>
<term>Basidiomycota (pathogenicity)</term>
<term>Basidiomycota (physiology)</term>
<term>Biological control</term>
<term>Colony Count, Microbial (MeSH)</term>
<term>Conidia</term>
<term>Dose activity relation</term>
<term>Fungi (pathogenicity)</term>
<term>Fungi (physiology)</term>
<term>Infection</term>
<term>Inoculation</term>
<term>Inoculum</term>
<term>Plant Diseases (microbiology)</term>
<term>Plant Leaves (microbiology)</term>
<term>Plant tissue disc</term>
<term>Salix</term>
<term>Salix (microbiology)</term>
<term>Spores, Fungal (growth & development)</term>
<term>Spores, Fungal (physiology)</term>
<term>Time Factors (MeSH)</term>
<term>Treatment efficiency</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Antibiose (MeSH)</term>
<term>Basidiomycota (pathogénicité)</term>
<term>Basidiomycota (physiologie)</term>
<term>Champignons (pathogénicité)</term>
<term>Champignons (physiologie)</term>
<term>Facteurs temps (MeSH)</term>
<term>Feuilles de plante (microbiologie)</term>
<term>Maladies des plantes (microbiologie)</term>
<term>Numération de colonies microbiennes (MeSH)</term>
<term>Salix (microbiologie)</term>
<term>Spores fongiques (croissance et développement)</term>
<term>Spores fongiques (physiologie)</term>
</keywords>
<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Spores fongiques</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Spores, Fungal</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Feuilles de plante</term>
<term>Maladies des plantes</term>
<term>Salix</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Plant Diseases</term>
<term>Plant Leaves</term>
<term>Salix</term>
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<keywords scheme="MESH" qualifier="pathogenicity" xml:lang="en"><term>Basidiomycota</term>
<term>Fungi</term>
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<keywords scheme="MESH" qualifier="pathogénicité" xml:lang="fr"><term>Basidiomycota</term>
<term>Champignons</term>
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<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Basidiomycota</term>
<term>Champignons</term>
<term>Spores fongiques</term>
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<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Basidiomycota</term>
<term>Fungi</term>
<term>Spores, Fungal</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Antibiosis</term>
<term>Colony Count, Microbial</term>
<term>Time Factors</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Antibiose</term>
<term>Facteurs temps</term>
<term>Inoculation</term>
<term>Lutte biologique</term>
<term>Disque tissu végétal</term>
<term>Efficacité traitement</term>
<term>Numération de colonies microbiennes</term>
<term>Relation dose réponse</term>
<term>Inoculum</term>
<term>Infection</term>
<term>Conidie</term>
<term>Salix</term>
<term>Melampsora larici-epitea</term>
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<front><div type="abstract" xml:lang="en">The mycoparasite Sphaerellopsis filum (teleomorph Eudarluca caricis) was applied simultaneously with Melampsora larici-epitea on to willow leaf discs using eight concentrations of conidia. Inoculum densities were quantified and the numbers of uredinia of the rust, pycnidia and conidia of S. filum and rust spores produced per leaf disc were measured 13 d after inoculation (first assessment). Higher S. filum inoculum densities resulted in more rust uredinia being infected, but did not reduce the number of uredinia produced. The ratios of infected rust pustules: S. filum conidia applied were in a range of 0.25-0.31 when less than 20 S. filum spores were inoculated on to a leaf disc (0.95 cm<sup>2</sup>
). Suppressive effects of S. filum on rust spore production were more obvious in the second assessment, carried out 23 d after inoculation. Inoculum densities of S. filum were significantly (P<0.001) correlated with the frequency of uredinia infected (% variance accounted for [VAF] = 85.8), the number of S. filum pycnidia (%VAF=81.4), S. filum spores produced (%VAF = 72.3) and rust spore production (%VAF = 48.6). Rust spore production was significantly (P < 0.001) negatively correlated with the frequency of uredinia infected (%VAF = 51.1), the number of S. filum pycnidia (%VAF = 42.0) and the number of S. filum spores produced (%VAF = 40.6). The best correlation was found between the number of pycnidia and the number of S. filum spores produced ( %VAF = 88.8).</div>
</front>
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<affiliations><list><country><li>Royaume-Uni</li>
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<tree><country name="Royaume-Uni"><noRegion><name sortKey="Pei, Ming H" sort="Pei, Ming H" uniqKey="Pei M" first="Ming H." last="Pei">Ming H. Pei</name>
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<name sortKey="Bayon, Carlos" sort="Bayon, Carlos" uniqKey="Bayon C" first="Carlos" last="Bayon">Carlos Bayon</name>
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<name sortKey="Hunter, Tom" sort="Hunter, Tom" uniqKey="Hunter T" first="Tom" last="Hunter">Tom Hunter</name>
<name sortKey="Ruiz, Carmen" sort="Ruiz, Carmen" uniqKey="Ruiz C" first="Carmen" last="Ruiz">Carmen Ruiz</name>
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