Use este identificador para citar ou linkar para este item: 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

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