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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
11/08/1995 |
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Data da última atualização: |
11/08/1995 |
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Autoria: |
DURAN-VILA, N.; FLORES, R.; SEMANCIK, J. S. |
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Afiliação: |
Instituto Valenciano de Investigaciones Agraria (IVIA) Valencia, Spain. |
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Título: |
Characterization of Viroid-like RNAs Associated with the Citrus Exocortis Syndrome. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
Virology, 150, 75-84 (1986). |
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Idioma: |
Inglês |
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Conteúdo: |
The symptoms of the exocortis disease of citrus were described as bark craking and shelling as early as 1984 by Fawcett and Klotz (1948). Subsequent indexing for exocortis was basead on trunk symptom on Poncirus trifoliata trees grown in the field. It was not until the transmission of the disease to Etrog citrion (Citrus medica) was reported (Calavan et al., 1964) the that this species was introduced as a more rapid greenhouse indicator. Citrons, Arizona 861 and Arizona 861-S-1, were later utilized as indicators for citrus exocortis disease because of greater sensitivity and more rapid symptom development (Roistecher et al, 1977). Depending on the degree of stunting, epinasty, and necrosis of veins and petioles on citron, the various field sources of the disease are then classified as either mild, moderate, or severe. When the severe isolates were used for transmission tests to herbaceous species, and especially to Gynura ouratiaca, a causa agent of the disease coul be isolated and characterizad as a low molecular weight infectious RNA, named citrus exocortis viroid (CEV) (Semancik and Weathers, 1972), with a nucleoted sequence of 371 bases (Gross et al., 1982; Visvader et al., 1982). |
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Palavras-Chave: |
Citros spp; Viroide. |
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Thesagro: |
Poncirus Trifoliata. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01685naa a2200181 a 4500
001 1646725
005 1995-08-11
008 1986 bl --- 0-- u #d
100 1 $aDURAN-VILA, N.
245 $aCharacterization of Viroid-like RNAs Associated with the Citrus Exocortis Syndrome.
260 $c1986
520 $aThe symptoms of the exocortis disease of citrus were described as bark craking and shelling as early as 1984 by Fawcett and Klotz (1948). Subsequent indexing for exocortis was basead on trunk symptom on Poncirus trifoliata trees grown in the field. It was not until the transmission of the disease to Etrog citrion (Citrus medica) was reported (Calavan et al., 1964) the that this species was introduced as a more rapid greenhouse indicator. Citrons, Arizona 861 and Arizona 861-S-1, were later utilized as indicators for citrus exocortis disease because of greater sensitivity and more rapid symptom development (Roistecher et al, 1977). Depending on the degree of stunting, epinasty, and necrosis of veins and petioles on citron, the various field sources of the disease are then classified as either mild, moderate, or severe. When the severe isolates were used for transmission tests to herbaceous species, and especially to Gynura ouratiaca, a causa agent of the disease coul be isolated and characterizad as a low molecular weight infectious RNA, named citrus exocortis viroid (CEV) (Semancik and Weathers, 1972), with a nucleoted sequence of 371 bases (Gross et al., 1982; Visvader et al., 1982).
650 $aPoncirus Trifoliata
653 $aCitros spp
653 $aViroide
700 1 $aFLORES, R.
700 1 $aSEMANCIK, J. S.
773 $tVirology, 150, 75-84 (1986).
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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