Identification and pathogenicity of diplodia, neofusicoccum, cadophora, and diaporthe species associated with cordon dieback in kiwifruit cultivar hayward in central Chile

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dc.contributor.authorDíaz G.A.
dc.contributor.authorLolas M.
dc.contributor.authorZoffoli J.P.
dc.contributor.authorFerrada E.E.
dc.date.accessioned2024-01-10T13:10:12Z
dc.date.available2024-01-10T13:10:12Z
dc.date.issued2021
dc.description.abstract© 2021 The American Phytopathological SocietyDieback symptoms associated with fungal trunk pathogens cause significant economic losses for farmers of kiwifruit and other woody fruit trees worldwide. This study represents the first attempt to identify and characterize the fungal trunk pathogens associated with cordon dieback disease of kiwifruit in central Chile. Field surveys were conducted throughout the main kiwifruit-growing regions in central Chile to determine the incidence and characterize the fungal trunk pathogens associated with cordon dieback of kiwifruit cultivar Hayward through morphological, molecular, and pathogenicity studies. A total of 250 cordon samples were collected and isolations were performed on 2% acidified potato dextrose agar (APDA) plus antibiotics and Igepal. The incidence of kiwifruit cordon dieback ranged between 5% and 85% in all surveyed areas in central Chile. A total of 246 isolates were isolated and identified using culture and morphological features belonging to three fungal taxa: Diaporthaceae spp. (Diaporthe ambigua and D. australafricana; n = 133 isolates); Botryosphaeriaceae spp. (Diplodia seriata and Neofusicoccum parvum; n = 89 isolates); and Ploettnerulaceae spp. (Cadophora luteo-olivacea and C. malorum; n = 24 isolates). These were identified using phylogenetics studies of the internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2) of the rDNA, part of the b-tubulin gene (tub2), and part of the translation elongation factor 1-a gene (tef1-a). Isolates of N. parvum and D. seriata were the most virulent, causing internal brown lesions and dieback symptoms in attached green shoots, attached lignified canes, and young inoculated kiwifruits. This report is the first to describe D. seriata and C. luteo-olivacea associated with kiwifruit cordon dieback in Chile. It presents the first description of N. parvum causing kiwifruit dieback worldwide.
dc.description.funderANID
dc.description.funderAgencia Nacional de Investigación y Desarrollo
dc.description.funderNational Agency
dc.description.funderNational Fund for Scientific and Technological Development
dc.fechaingreso.objetodigital2024-05-09
dc.fuente.origenScopus
dc.identifier.doi10.1094/PDIS-05-20-0988-RE
dc.identifier.eissn19437692
dc.identifier.issn19437692 01912917
dc.identifier.scopusidSCOPUS_ID:85109695894
dc.identifier.urihttps://doi.org/10.1094/PDIS-05-20-0988-RE
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77799
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Zoffoli Guerra, Juan Pablo; 0000-0003-0455-8477; 58311
dc.language.isoen
dc.nota.accesoSin adjunto
dc.publisherAmerican Phytopathological Society
dc.revistaPlant Disease
dc.rightsregistro bibliográfico
dc.subjectCadophora luteo-olivacea
dc.subjectCadophora malorum
dc.subjectDiaporthe ambigua
dc.subjectDiaporthe australafricana
dc.subjectDiplodia seriata
dc.subjectFungal trunk pathogens
dc.subjectKiwifruit dieback
dc.subjectNeofusicoccum parvum
dc.titleIdentification and pathogenicity of diplodia, neofusicoccum, cadophora, and diaporthe species associated with cordon dieback in kiwifruit cultivar hayward in central Chile
dc.typeartículo
dc.volumen105
sipa.codpersvinculados58311
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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