Data/hora: 25/06/2024 14:39:45

Biblioteca(s): 	Embrapa Arroz e Feijão.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Data corrente: 	05/09/2006	
Data da última atualização: 	01/06/2022	
Autoria: 	SARTORATO, A.	
Afiliação: 	ALOISIO SARTORATO, CNPAF.	
Título: 	Pathogenic variability and genetic diversity of Phaeoisariopsis griseola isolates from two counties in the State of Goias, Brazil.	
Ano de publicação: 	2004	
Fonte/Imprenta: 	Journal of Phytopathology, v. 152, n. 7, p. 385-390, Aug. 2004.	
Idioma: 	Inglês	
Conteúdo: 	Angular leaf spot disease of common bean (Phaseolus vulgaris), caused by Phaeoisariopsis griseola, is one of the most important disease of this crop in Brazil. Control strategies for the disease include cultural practices, chemical control and genetic resistance. This pathogen is known to vary greatly in pathogenicity. For durable use of genetic resistance to control this disease, it is necessary to manage resistant cultivars by taking into account the population structure of P. griseola. Isolates of the pathogen from Goias, Brazil exhibited an important virulence polymorphism when inoculated on 12 differential cultivars. A total of 13 pathotypes was identified within a series of 96 isolates collected in Inhumas and Damolandia counties. Only pathotypes 63-15, 63-23, 63-31 and 63-63 were identified in both counties. Since all the isolates were capable of inducing disease in both Andean and Mesoamerican differential cultivars, they were considered to be of Mesoamerican origin. Random amplified polymorphic DNA (RAPD) analysis performed on the same 96 isolates revealed a great genetic diversity clustering the series into five groups at an Euclidean distance of 62.5%. Although the results did not show any clustering according to the isolate origin, it was possible to observe a tendency of the isolates to cluster in different groups according to their origin. No pathotype-specific band was observed in the present study.	
Palavras-Chave: 	Angular leaf spot; Brasil; Molecular marker.	
Thesagro: 	Feijão; Mancha Angular; Phaseolus Vulgaris.	
Categoria do assunto: 	H Saúde e Patologia	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (24091-1) - UPC - AP - DD - 2004 -  - 2004 - DIS