Data/hora: 13/06/2024 08:53:33

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 03/10/1995
Data da última atualização: | 31/05/2023
Autoria: | HU, J. S.; LI, H. P.; BARRY, K.; WANG, M.
Afiliação: | Department of Plant Pathology, University of Hawaii, Honolulu 96822; and R.Jordan, USDA-ARS, U.S. National Arboretum, Floral and Nursery Plants Research Unit, Beltsville, Md. 20705.
Título: | Comparison of dot blot, ELISA, and RT-PCR Assays detection of two cucumber mosaic virus isolates infecting banana in Hawaii.
Ano de publicação: | 1995
Fonte/Imprenta: | Plant Disease, v.79, n.9, 1995.
ISSN: | 0191-2917
Idioma: | Inglês
Conteúdo: | The coat protein genes of cucumber mosaic virus (CMV) isolates infecting banana plants in Hawaii were cloned and sequenced. Based on nucleotide and amino acid sequence comparisons, both isolates belong to CMV subgroup I. One isolate (CMV-Hawaii), wich is common in banana plants in the state of Hawaii and induces mild mosaic symptoms, shares 99% sequence identity (both nucleotid and amino acid sequences) with CMV-C strain. Another isolate (CMV-Oahu), which was found only at two banana farms in the state of Hawaii, induces severe mosaic and leaf distrortion symptoms. CMV-Oahu 91% nucleotide and amino acid sequence identity, respectively, with CMV-C and CMV-Hawaii. A reserve transcription-polymerase chain reaction (RT-PCR) assay was developed for detection of both CMV subgroups from banana samples. The RT-PCR product (~750 bp) was also labeled as a probe to detect CMV in dot blot hybridization tests.PCR is a more sensitive assay than either dot blot or ELISA. The dot blot assay was 100 times more sensitive than ELISA. The distribution ofCMV within banana plants was uneven. CMV concentrations were higher in leaves than in older ones. The CMV-Oahu isolate was not detected in banana by ELISA using antibodies to both CMV subgroups I and II, but was positive in dot blot and RT-PCR tests.
Palavras-Chave: | Detectacao de virus.
Thesagro: | Doença; Gene.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
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