Data/hora: 16/06/2024 20:14:03

Provedor de dados: 	58	
País: 	Brazil	
Título: 	Morphological and molecular characterization of Fusarium. solani and F. oxysporum associated with crown disease of oil palm	
Autores: 	Hafizi,R.; Salleh,B.; Latiffah,Z.	
Data: 	2013-09-01	
Ano: 	2013	
Palavras-chave: 	Crown disease; Fusarium solani; Fusarium oxysporum; IGS-RFLP; Morphological characteristic.	
Resumo: 	Crown disease (CD) is infecting oil palm in the early stages of the crop development. Previous studies showed that Fusarium species were commonly associated with CD. However, the identity of the species has not been resolved. This study was carried out to identify and characterize through morphological approaches and to determine the genetic diversity of the Fusarium species. 51 isolates (39%) of Fusarium solani and 40 isolates (31%) of Fusarium oxysporum were recovered from oil palm with typical CD symptoms collected from nine states in Malaysia, together with samples from Padang and Medan, Indonesia. Based on morphological characteristics, isolates in both Fusarium species were classified into two distinct morphotypes; Morphotypes I and II. Molecular characterization based on IGS-RFLP analysis produced 27 haplotypes among the F. solani isolates and 33 haplotypes for F. oxysporum isolates, which indicated high levels of intraspecific variations. From UPGMA cluster analysis, the isolates in both Fusarium species were divided into two main clusters with the percentage of similarity from 87% to 100% for F. solani, and 89% to 100% for F. oxysporum isolates, which was in accordance with the Morphotypes I and II. The results of the present study indicated that F. solani and F. oxysporum associated with CD of oil palm in Malaysia and Indonesia were highly variable.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300047	
Editor: 	Sociedade Brasileira de Microbiologia	
Relação: 	10.1590/S1517-83822013000300047	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Microbiology  v.44 n.3 2013	
Fonte: 	info:eu-repo/semantics/openAccess