Data/hora: 23/06/2024 13:30:45

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	01/02/1996	
Data da última atualização: 	01/02/1996	
Autoria: 	COLARICCIO, A.; LOVISOLO, O.; CHAGAS, C. M.; GALLETI, S. R.; ROSSETTI, V.; KITAJIMA, E. W.	
Afiliação: 	S. virologia fitopatol., Instituto biologico de sao Paulo, CP 7119, 04014-900 Sao Paulo, SP, Brasil. Instituto di Fitovirologia applicata del consiglio nacionale delle Ricerche Str.delle Cacce 73, 10135 Torino.	
Título: 	Mechanical transmission and ultrastructutural aspects of citrus leprosis disease.	
Ano de publicação: 	1995	
Fonte/Imprenta: 	Fitopatologia brasileira, 20(2), junho, 1995.	
Páginas: 	208-213	
Idioma: 	Inglês	
Conteúdo: 	Citrus leprosis (CL), an important disease, which occurs mainly in Brazil and Argentina, is transmitted by mites of the genus Brevipapus. Limited evidence suggests that CL is caused by virus. We report mechanical transmission of CL from citrus to citrus and tree herbaceous test plants (Chenopodium amaranticolor, C. quinoa and Gomphrena globosa), with production of only local lesions, in all cases. Reaction times were 5 to 7 days for the two Chenopodium species, 14 to 16 days for G. globosa and 20 to 24 for citrus. In naturally infectred citrus tissues and in experimentally obtained local lesions, non-enveloped rhabdovirus-like particles 120-130 X 50-55 nm were observed within membranous vesicles of the endoplasmic reticulum. Sometimes the particles reached 300nm in length. Dense masses (viroplasm), and vesicles 80 to 100 nm in diameter, associated with the tonoplast, were also observed. The cytopathology was not identical with that previously reported for CL. Mechanical transmissibility, the finding of virus-like particles in infected tissues, and the cytopathology eliminate the possibility of CL being caused bi mite salivary toxins, and open the way to the identification of the causal agent, which is almost certainly a virus.	
Palavras-Chave: 	Citrus leprosis; Cytopathology; Doencas; Mechanical transmission; Mite; Rhabdovirus; Transmissao mecanica.	
Thesagro: 	Ácaro; Citologia; Citrus Sinensis; Vírus.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
Exemplares: 	CNPMF - (3632-1) - ADC - AP - -- - 632.05 -  - 632.05 - DIS