Data/hora: 05/06/2024 11:21:38

Biblioteca(s): | Embrapa Milho e Sorgo.
Tipo da produção científica: | Artigo em Periódico Indexado
Data corrente: | 20/01/2006
Data da última atualização: | 29/05/2018
Autoria: | VALERIO, H. M.; RESENDE, M. A.; WEIKERT-OLIVEIRA, R. C. B.; CASELA, C. R.
Afiliação: | Embrapa Milho e Sorgo.
Título: | Virulence and molecular diversity in colletotrichum graminicola from Brazil.
Ano de publicação: | 2005
Fonte/Imprenta: | Mycopathologia, The Hague, v. 159, n. 3, p. 449-459, 2005.
Idioma: | Inglês
Conteúdo: | Genetic diversity among 37 isolates of the sorghum anthracnose pathogen Colletotrichum graminicola, from four geographically distinct regions of Brazil, was evaluated by RAPD and RFLP-PCR markers and virulence characters on a set of 10 differential sorghum genotypes. Twenty-two races were identified and race 13B was the most frequent, but present in only two regions. RAPD analysis revealed 143 polymorphic bands that grouped the isolates according to their geographic origin, but not by their virulence phenotypes. RFLP with HaeIII, MspI, HinfI, HhaI, HpaII, EcoRI, HindlII, PstI, RsaI, Taq alpha I, and AluI enzymes over ITS domains and 5.8 rDNA genes of C. graminicola did not show differences among the isolates, indicating high conservation of these restriction sites. Molecular polymorphism was observed among isolates belonging to the same race. No association between virulence phenotypes and molecular profiles was observed.
Palavras-Chave: | Diversity; RAPD; RFLP; Virulence phenotype.
Thesagro: | Antracnose; Colletotrichum Graminicola; Sorghum bicolor.
Thesaurus Nal: | polymorphism.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (18253-1) - UPC - AP - DD -  -  -  - DIS