Pathogenicity of South African Hymenochaetales taxa isolated from esca-infected grapevines

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dc.contributor.authorCloete, Miaen_ZA
dc.contributor.authorMostert, Lizelen_ZA
dc.contributor.authorFischer, Michaelen_ZA
dc.contributor.authorHalleen, Francoisen_ZA
dc.date.accessioned2016-08-26T12:49:40Z
dc.date.available2016-08-26T12:49:40Z
dc.date.issued2015
dc.descriptionCITATION: Cloete, M., Mostert, L., Fischer, M. & Halleen, F. 2015. Pathogenicity of South African Hymenochaetales taxa isolated from esca-infected grapevines. Phytopathologia Mediterranea, 54(2):368−379, doi:10.14601/Phytopathol_Mediterr-16237.
dc.descriptionThe original publication is available at http://www.fupress.net/index.php/pm/
dc.description.abstractLittle is known about the pathogenicity and etiology of Hymenochaetales taxa associated with esca in South Africa. Ten South African Hymenochaetales taxa associated with esca in grapevine were subjected to basic enzyme assays to determine which ligninolytic enzymes were secreted by each taxon. In addition, a field trial was undertaken to determine the pathogenicity of these taxa. Twenty-seven fungal isolates and two negative controls were inoculated into wounds made on mature grapevines of the cultivars Shiraz and Mourvédre. Inoculated vines were evaluated for white rot symptoms after 24 months. The results of the enzyme assays indicated a difference in enzyme secretion among taxa and also between isolates of the same taxa. All isolates secreted cellulase and laccase, but there was a difference in isolates’ ability to secrete manganese peroxidase and lignin peroxidase. The results of the pathogenicity trial showed that all of the isolates used were capable of causing the characteristic white rot symptom in the wood. There were clear differences in susceptibility to white rot between the two cultivars tested, namely Shiraz and Mourvédre. The cultivars also differed in which taxa proved to be more virulent. On Shiraz a specific isolate of Taxon 6 (an Inonotus sp.), Phellinus sp. and Inonotus setuloso-croceus were significantly virulent. On Mourvédre, Taxon 3 (an Inocutis sp.) was significantly virulent.en_ZA
dc.description.urihttp://www.fupress.net/index.php/pm/article/view/16237
dc.description.versionPublisher's version
dc.format.extent12 pages
dc.identifier.citationCloete, M., Mostert, L., Fischer, M. & Halleen, F. 2015. Pathogenicity of South African Hymenochaetales taxa isolated from esca-infected grapevines. Phytopathologia Mediterranea, 54(2):368−379, doi:10.14601/Phytopathol_Mediterr-16237.
dc.identifier.issn1593-2095 (online)
dc.identifier.issn0031-9465 (print)
dc.identifier.otherdoi:10.14601/Phytopathol_Mediterr-16237
dc.identifier.urihttp://hdl.handle.net/10019.1/99490
dc.language.isoen_ZAen_ZA
dc.publisherFirenze University Press
dc.rights.holderAuthors retain copyright
dc.subjectEsca diseaseen_ZA
dc.subjectGrapevineen_ZA
dc.subjectHymenochaetales taxaen_ZA
dc.subjectWhite roten_ZA
dc.titlePathogenicity of South African Hymenochaetales taxa isolated from esca-infected grapevinesen_ZA
dc.typeArticleen_ZA
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