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dc.contributor.authorBRUMAT, A. C. L.
dc.contributor.authorAUER, C. G.
dc.contributor.authorTESSMANN, D. J.
dc.contributor.authorBUHRER, C. de B.
dc.contributor.authorDUARTE, H. da S. S.
dc.contributor.authorSANTOS, A. F. dos
dc.date.accessioned2025-07-10T19:48:13Z-
dc.date.available2025-07-10T19:48:13Z-
dc.date.created2025-07-10
dc.date.issued2025
dc.identifier.citationJournal of Phytopathology, 173:e70120, 2025.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1177252-
dc.descriptionCharacteristic symptoms of decline were observed in 10-year-old Pinus taeda (loblolly pine) trees in plantations located in the state of Santa Catarina, in the humid subtropical south of Brazil. Aboveground, we observed needle chlorosis, followed by drying and shortening of needles, formation of tufts on branch tips, and death of the canopy at a more advanced stage. In the root system, there was a reduction in the volume of secondary roots, the absence of ectomycorrhizae, and some external necrotic lesions. This study aimed to identify the pathogenic fungi associated with the decline. Roots and soil from symptomatic trees were collected to isolate pathogenic fungi. Molecular characterisation of the isolates was carried out by sequencing the ITS region and partial HIS3 and TEF1 genes; morphological characterisation of conidiophores and conidia was also conducted. Seven isolates were identified, belonging to the species Ilyonectria leucospermi (n = 2), I. protearum (n = 2), I. robusta (n = 2), and I. vredenhoekensis (n = 1). Koch's postulates were fulfilled for the pathogenic characterisation of the isolates on P. taeda seedlings. This study is the first to report these pathogens causing disease in P. taeda worldwide, and it demonstrated their association with the decline of pine trees in Brazil.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectNeedle chlorosis
dc.subjectSanta Catarina
dc.titleIlyonectria species associated with tree decline in Pinus taeda in Brazil.
dc.typeArtigo de periódico
dc.subject.thesagroPinus Taeda
dc.subject.thesagroFungo
dc.subject.thesagroPatógeno
dc.subject.thesagroDoença de Planta
dc.subject.nalthesaurusPhylogeny
dc.subject.nalthesaurusSoil fungi
dc.subject.nalthesaurusPathogen identification
dc.subject.nalthesaurusPlant diseases and disorders
riaa.ainfo.id1177252
riaa.ainfo.lastupdate2025-07-10
dc.identifier.doihttps://doi.org/10.1111/jph.70120
dc.contributor.institutionANA CAROLINA LYRA BRUMAT, UNIVERSIDADE FEDERAL DO PARANÁ; CELSO GARCIA AUER, CNPF; DAURI JOSÉ TESSMANN, UNIVERSIDADE ESTADUAL DE MARINGÁ; CAROLINE DE BASTOS BUHRER, CNPF; HENRIQUE DA SILVA SILVEIRA DUARTE, UNIVERSIDADE FEDERAL DO PARANÁ; ALVARO FIGUEREDO DOS SANTOS, CNPF.
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