PoplarV1, Main, Exploration, bibRecord, 004413

Native Venturia inopina sp. nov., specific to Populus trichocarpa and its hybrids.

Identifieur interne : 004413 ( Main/Exploration ); précédent : 004412; suivant : 004414

Native Venturia inopina sp. nov., specific to Populus trichocarpa and its hybrids.

Auteurs : George Newcombe [États-Unis]

Source :

Mycological research [ 0953-7562 ] ; 2003.

RBID : pubmed:12735251

Descripteurs français

KwdFr :
- Ascomycota (classification), Ascomycota (pathogénicité), Chimère (microbiologie), Données de séquences moléculaires (MeSH), Espaceur de l'ADN ribosomique (génétique), Feuilles de plante (microbiologie), Populus (microbiologie), Pousses de plante (microbiologie), Spores fongiques (cytologie).
MESH :
- cytologie : Spores fongiques.
- génétique : Ascomycota, Espaceur de l'ADN ribosomique.
- microbiologie : Chimère, Feuilles de plante, Populus, Pousses de plante.
- pathogénicité : Ascomycota.
- Données de séquences moléculaires.

English descriptors

KwdEn :
- Ascomycota (classification), Ascomycota (pathogenicity), Chimera (microbiology), DNA, Ribosomal Spacer (genetics), Molecular Sequence Data (MeSH), Plant Leaves (microbiology), Plant Shoots (microbiology), Populus (microbiology), Spores, Fungal (cytology).
MESH :
- chemical , genetics : DNA, Ribosomal Spacer.
- classification : Ascomycota.
- cytology : Spores, Fungal.
- microbiology : Chimera, Plant Leaves, Plant Shoots, Populus.
- pathogenicity : Ascomycota.
- Molecular Sequence Data.

Abstract

Venturia populina, first described on European Populus nigra, has been thought to be the only species of Venturia in Europe and North America to cause leaf and shoot blight of balsam poplars and cottonwoods in Populus sects. Tacamahaca and Aigeiros. The species of Venturia occurring on introduced P. nigra and native P. trichocarpa in the Pacific northwest were examined. Venturia populina was consistently found on P. nigra (i.e. the widespread P. nigra cv. 'italica') in the region, but V. inopina sp. nov. was present on native P. trichocarpa and its hybrids. There were neither examples of V. populina on P. trichocarpa and its hybrids nor of V. inopina on P. nigra cv. 'italica' (27 collections from 16 sites in Oregon, Washington, and Vancouver Island were made during 1995-2002). In an inoculation study, host-range separation was confirmed in that V. inopina caused sporulating leaf lesions on P. trichocarpa and its hybrids, but only non-sporulating lesions on P. nigra cv. 'italica'. These two species of Venturia can readily be distinguished by conidial septation; V. populina is primarily 2-septate, whereas V. inopina is primarily 1-septate. Growth rates on PDA at 15 degrees C, and ITS sequences (2.3% divergence) were also distinct in isolates of these congeners. Conidial shape was of more value in discriminant analysis than conidial length. Venturia inopina is homothallic, given the sexual fertility of cultures of single ascospores that were overwintered under ambient conditions. Its geographic range appears to be restricted even within the Pacific northwest, leaving open the possibility that still other undescribed, native species of Venturia occur elsewhere in North America on sects. Tacamahaca and Aigeiros.

DOI: 10.1017/s0953756202007086
PubMed: 12735251

Affiliations:

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Le document en format XML

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<author><name sortKey="Newcombe, George" sort="Newcombe, George" uniqKey="Newcombe G" first="George" last="Newcombe">George Newcombe</name>
<affiliation wicri:level="2"><nlm:affiliation>Department of Forest Resources, University of Idaho, Moscow, ID 83844-1133, USA. georgen@uidaho.edu</nlm:affiliation>
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<term>DNA, Ribosomal Spacer (genetics)</term>
<term>Molecular Sequence Data (MeSH)</term>
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<term>Données de séquences moléculaires (MeSH)</term>
<term>Espaceur de l'ADN ribosomique (génétique)</term>
<term>Feuilles de plante (microbiologie)</term>
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<term>Pousses de plante (microbiologie)</term>
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<term>Populus</term>
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<keywords scheme="MESH" qualifier="pathogenicity" xml:lang="en"><term>Ascomycota</term>
</keywords>
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</keywords>
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<front><div type="abstract" xml:lang="en">Venturia populina, first described on European Populus nigra, has been thought to be the only species of Venturia in Europe and North America to cause leaf and shoot blight of balsam poplars and cottonwoods in Populus sects. Tacamahaca and Aigeiros. The species of Venturia occurring on introduced P. nigra and native P. trichocarpa in the Pacific northwest were examined. Venturia populina was consistently found on P. nigra (i.e. the widespread P. nigra cv. 'italica') in the region, but V. inopina sp. nov. was present on native P. trichocarpa and its hybrids. There were neither examples of V. populina on P. trichocarpa and its hybrids nor of V. inopina on P. nigra cv. 'italica' (27 collections from 16 sites in Oregon, Washington, and Vancouver Island were made during 1995-2002). In an inoculation study, host-range separation was confirmed in that V. inopina caused sporulating leaf lesions on P. trichocarpa and its hybrids, but only non-sporulating lesions on P. nigra cv. 'italica'. These two species of Venturia can readily be distinguished by conidial septation; V. populina is primarily 2-septate, whereas V. inopina is primarily 1-septate. Growth rates on PDA at 15 degrees C, and ITS sequences (2.3% divergence) were also distinct in isolates of these congeners. Conidial shape was of more value in discriminant analysis than conidial length. Venturia inopina is homothallic, given the sexual fertility of cultures of single ascospores that were overwintered under ambient conditions. Its geographic range appears to be restricted even within the Pacific northwest, leaving open the possibility that still other undescribed, native species of Venturia occur elsewhere in North America on sects. Tacamahaca and Aigeiros.</div>
</front>
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<DateCompleted><Year>2003</Year>
<Month>05</Month>
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<DateRevised><Year>2019</Year>
<Month>11</Month>
<Day>07</Day>
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<JournalIssue CitedMedium="Print"><Volume>107</Volume>
<Issue>Pt 1</Issue>
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<Month>Jan</Month>
</PubDate>
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<Title>Mycological research</Title>
<ISOAbbreviation>Mycol Res</ISOAbbreviation>
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<ArticleTitle>Native Venturia inopina sp. nov., specific to Populus trichocarpa and its hybrids.</ArticleTitle>
<Pagination><MedlinePgn>108-16</MedlinePgn>
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<Abstract><AbstractText>Venturia populina, first described on European Populus nigra, has been thought to be the only species of Venturia in Europe and North America to cause leaf and shoot blight of balsam poplars and cottonwoods in Populus sects. Tacamahaca and Aigeiros. The species of Venturia occurring on introduced P. nigra and native P. trichocarpa in the Pacific northwest were examined. Venturia populina was consistently found on P. nigra (i.e. the widespread P. nigra cv. 'italica') in the region, but V. inopina sp. nov. was present on native P. trichocarpa and its hybrids. There were neither examples of V. populina on P. trichocarpa and its hybrids nor of V. inopina on P. nigra cv. 'italica' (27 collections from 16 sites in Oregon, Washington, and Vancouver Island were made during 1995-2002). In an inoculation study, host-range separation was confirmed in that V. inopina caused sporulating leaf lesions on P. trichocarpa and its hybrids, but only non-sporulating lesions on P. nigra cv. 'italica'. These two species of Venturia can readily be distinguished by conidial septation; V. populina is primarily 2-septate, whereas V. inopina is primarily 1-septate. Growth rates on PDA at 15 degrees C, and ITS sequences (2.3% divergence) were also distinct in isolates of these congeners. Conidial shape was of more value in discriminant analysis than conidial length. Venturia inopina is homothallic, given the sexual fertility of cultures of single ascospores that were overwintered under ambient conditions. Its geographic range appears to be restricted even within the Pacific northwest, leaving open the possibility that still other undescribed, native species of Venturia occur elsewhere in North America on sects. Tacamahaca and Aigeiros.</AbstractText>
</Abstract>
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Native Venturia inopina sp. nov., specific to Populus trichocarpa and its hybrids.

Native Venturia inopina sp. nov., specific to Populus trichocarpa and its hybrids.

Source :

Descripteurs français

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

Pour générer des pages wiki