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https://locus.ufv.br//handle/123456789/11924
Tipo: | Artigo |
Título: | A new species of Calonectria causing leaf blight and cutting rot of three forest tree species in Brazil |
Autor(es): | Alfenas, Rafael F. Pereira, Olinto L. Jorge, Vanessa L. Crous, Pedro W. Alfenas, Acelino C. |
Abstract: | Several species of Calonectria cause diseases on a wide range of forest tree species that are propagated either via seedlings or rooted cuttings. In nurseries these fungi cause damping-off, cutting and root rots, stem lesions, and leaf blights. Recently a Calonectria sp. was isolated from rooted cuttings of Anadenanthera peregrina (Fabaceae), Piptadenia gonoacantha (Fabaceae), and Azadirachta indica (Meliaceae) exhibiting leaf blight and cutting rot in a forest nursery at the Universidade Federal de Viçosa, Brazil. Morphological comparisons and DNA sequences of three loci containing partial gene sequences of β-tubulin (TUB2), calmodulin (CAL), and elongation factor (TEF-1α) indicated that these isolates represent an unnamed species of Calonectria, described here as C. hodgesii sp. nov. Sprayinoculated plants of all three hosts with a suspension at 1x104 conidia mL-1 induced leaf lesions, cutting rot, and intense defoliation as observed under natural conditions. Calonectria hodgesii was re-isolated from infected tissue, which fulfilled Koch's postulates and confirmed its status as a pathogen with a wide host range. |
Palavras-chave: | Forest pathology Hypocreales Pathogenicity Phylogeny Taxonomy Tropical fungi |
Editor: | Tropical Plant Pathology |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1590/S1982-56762013000600007 http://www.locus.ufv.br/handle/123456789/11924 |
Data do documento: | 13-Ago-2013 |
Aparece nas coleções: | Fitopatologia - Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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v38n6a07.pdf | texto completo | 7,51 MB | Adobe PDF | Visualizar/Abrir |
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