A Method to Induce Stem Cankers by Inoculating Nonwounded Populus Clones with Septoria musiva Spore Suspensions.
Identifieur interne : 003399 ( Main/Exploration ); précédent : 003398; suivant : 003400A Method to Induce Stem Cankers by Inoculating Nonwounded Populus Clones with Septoria musiva Spore Suspensions.
Auteurs : Jared M. Leboldus [Canada] ; Peter V. Blenis [Canada] ; Barb R. Thomas [Canada]Source :
- Plant disease [ 0191-2917 ] ; 2010.
Abstract
Most artificial inoculations of Populus spp. stems with Septoria musiva have required host wounding to induce canker development; in the absence of wounds, frequencies of cankers have been low. Three greenhouse inoculation experiments were conducted to demonstrate the reliability and repeatability of an inoculation method that did not require wounding. In the first, 16 clones of hybrid poplar were inoculated with three isolates of S. musiva to compare responses following wounding and inoculation with mycelium (wound inoculation) with responses following inoculation of nonwounded trees by spraying with a conidial suspension (spray inoculation). Stem disease severity among clones following spray inoculation was correlated with stem disease severity following wound inoculation. A significant clone-isolate interaction was detected with spray inoculation but not wound inoculation. In the other two greenhouse experiments, 29 clones of hybrid poplar and 69 clones of Populus balsamifera were inoculated with a spore suspension mixture of three isolates. In both cases, the experimental error was similar to that obtained in previous experiments, in which trees were wound inoculated, and was adequately small to permit detection of differences in responses among clones. Ultimately, field studies will be needed to determine the best inoculation method for predicting stem responses to this pathogen under field conditions. However, relative to wound inoculation, spray inoculation of nonwounded trees has the advantage of yielding faster results, permitting inoculation with a mixture of isolates, and not circumventing potential mechanisms for resisting penetration. The ability to infect stems without wounding creates opportunities for numerous types of epidemiological and disease control studies that are difficult to conduct with wound inoculation.
DOI: 10.1094/PDIS-02-10-0094
PubMed: 30743608
Affiliations:
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Leboldus</name><affiliation wicri:level="1"><nlm:affiliation>Department of Renewable Resources, University of Alberta, Edmonton, AB T6G 2H1, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Renewable Resources, University of Alberta, Edmonton, AB T6G 2H1</wicri:regionArea><wicri:noRegion>AB T6G 2H1</wicri:noRegion></affiliation></author><author><name sortKey="Blenis, Peter V" sort="Blenis, Peter V" uniqKey="Blenis P" first="Peter V" last="Blenis">Peter V. Blenis</name><affiliation wicri:level="1"><nlm:affiliation>Department of Renewable Resources, University of Alberta, Edmonton, AB T6G 2H1, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Renewable Resources, University of Alberta, Edmonton, AB T6G 2H1</wicri:regionArea><wicri:noRegion>AB T6G 2H1</wicri:noRegion></affiliation></author><author><name sortKey="Thomas, Barb R" sort="Thomas, Barb R" uniqKey="Thomas B" first="Barb R" last="Thomas">Barb R. Thomas</name><affiliation wicri:level="1"><nlm:affiliation>Alberta-Pacific Forest Industries Inc., Boyle, AB T0A 0M0, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Alberta-Pacific Forest Industries Inc., Boyle, AB T0A 0M0</wicri:regionArea><wicri:noRegion>AB T0A 0M0</wicri:noRegion></affiliation></author></analytic><series><title level="j">Plant disease</title><idno type="ISSN">0191-2917</idno><imprint><date when="2010" type="published">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Most artificial inoculations of Populus spp. stems with Septoria musiva have required host wounding to induce canker development; in the absence of wounds, frequencies of cankers have been low. Three greenhouse inoculation experiments were conducted to demonstrate the reliability and repeatability of an inoculation method that did not require wounding. In the first, 16 clones of hybrid poplar were inoculated with three isolates of S. musiva to compare responses following wounding and inoculation with mycelium (wound inoculation) with responses following inoculation of nonwounded trees by spraying with a conidial suspension (spray inoculation). Stem disease severity among clones following spray inoculation was correlated with stem disease severity following wound inoculation. A significant clone-isolate interaction was detected with spray inoculation but not wound inoculation. In the other two greenhouse experiments, 29 clones of hybrid poplar and 69 clones of Populus balsamifera were inoculated with a spore suspension mixture of three isolates. In both cases, the experimental error was similar to that obtained in previous experiments, in which trees were wound inoculated, and was adequately small to permit detection of differences in responses among clones. Ultimately, field studies will be needed to determine the best inoculation method for predicting stem responses to this pathogen under field conditions. However, relative to wound inoculation, spray inoculation of nonwounded trees has the advantage of yielding faster results, permitting inoculation with a mixture of isolates, and not circumventing potential mechanisms for resisting penetration. The ability to infect stems without wounding creates opportunities for numerous types of epidemiological and disease control studies that are difficult to conduct with wound inoculation.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">30743608</PMID><DateRevised><Year>2019</Year><Month>11</Month><Day>20</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0191-2917</ISSN><JournalIssue CitedMedium="Print"><Volume>94</Volume><Issue>10</Issue><PubDate><Year>2010</Year><Month>Oct</Month></PubDate></JournalIssue><Title>Plant disease</Title><ISOAbbreviation>Plant Dis</ISOAbbreviation></Journal><ArticleTitle>A Method to Induce Stem Cankers by Inoculating Nonwounded Populus Clones with Septoria musiva Spore Suspensions.</ArticleTitle><Pagination><MedlinePgn>1238-1242</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1094/PDIS-02-10-0094</ELocationID><Abstract><AbstractText>Most artificial inoculations of Populus spp. stems with Septoria musiva have required host wounding to induce canker development; in the absence of wounds, frequencies of cankers have been low. Three greenhouse inoculation experiments were conducted to demonstrate the reliability and repeatability of an inoculation method that did not require wounding. In the first, 16 clones of hybrid poplar were inoculated with three isolates of S. musiva to compare responses following wounding and inoculation with mycelium (wound inoculation) with responses following inoculation of nonwounded trees by spraying with a conidial suspension (spray inoculation). Stem disease severity among clones following spray inoculation was correlated with stem disease severity following wound inoculation. A significant clone-isolate interaction was detected with spray inoculation but not wound inoculation. In the other two greenhouse experiments, 29 clones of hybrid poplar and 69 clones of Populus balsamifera were inoculated with a spore suspension mixture of three isolates. In both cases, the experimental error was similar to that obtained in previous experiments, in which trees were wound inoculated, and was adequately small to permit detection of differences in responses among clones. Ultimately, field studies will be needed to determine the best inoculation method for predicting stem responses to this pathogen under field conditions. However, relative to wound inoculation, spray inoculation of nonwounded trees has the advantage of yielding faster results, permitting inoculation with a mixture of isolates, and not circumventing potential mechanisms for resisting penetration. 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Leboldus</name></noRegion><name sortKey="Blenis, Peter V" sort="Blenis, Peter V" uniqKey="Blenis P" first="Peter V" last="Blenis">Peter V. Blenis</name><name sortKey="Thomas, Barb R" sort="Thomas, Barb R" uniqKey="Thomas B" first="Barb R" last="Thomas">Barb R. Thomas</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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