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| 140. | | RODRIGUES,S. P.; PICCIN, J. G. Z.; VALE, P. M.; VENTURA, J. A.; FERNANDES, P. M. B. Papaya meleira virus (PMeV) a a meleira do mamoeiro : estudos realizados no Núcleo de Biotecnologia da UFES. In: SIMPÓSIO DO PAPAYA BRASILEIRO, 4., 2009, VITÓRIA-ES. Pesquisa científica e a crise no mercado do mamão: anais... Vitória: Incaper, 2009. 6p. (Incaper. Documentos, 176). Palestra.| Biblioteca(s): Biblioteca Rui Tendinha. |
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 | Acesso ao texto completo restrito à biblioteca da Biblioteca Rui Tendinha. Para informações adicionais entre em contato com biblioteca@incaper.es.gov.br. |
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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
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Data corrente: |
24/05/2016 |
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Data da última atualização: |
24/05/2016 |
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Autoria: |
RODRIGUES, S. P.; CUNHA, M. da.; VENTURA, J. A.; FERNANDES, P. M. B. |
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Afiliação: |
UFES; UENF; Jose Aires Ventura, Incaper; UFES. |
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Título: |
Effcts of the Papaya meleira virus on papaya latex structure and composition. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
BIOTIC AND BIOTIC STRESS, v. 28, n. 5, p. 861-871, 2009. |
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DOI: |
10.1007/s00299-009-0673-7 |
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Idioma: |
Português |
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Conteúdo: |
Spontaneous latex exudation is the main symptom of papaya sticky (meleira) disease caused by the Papaya meleira virus (PMeV), a double-stranded RNA (dsRNA) virus. This paper describes different effects of PMeV on papaya latex. Latex samples were subjected to different histochemical tests to evaluate their chemical composition. Additionally, the integrity of the latex particles was assessed by transmission and scanning electron microscopy analysis. Biochemical and micro- and macro-element measurements were performed. PMeV dsRNA extraction was performed to evaluate the interaction of the virus with the latex particles. Sticky diseased latex was positive for alkaloid biosynthesis and showed an accumulation of calcium oxalate crystals. PMeV also increased H(2)O(2) synthesis within sticky diseased laticifers. The protein, sugar and water levels were altered, probably due to chemical changes. The morphology of the latex particles was further altered; PMeV particles seemed to be bound to the latex particles. The alkaloid and H(2)O(2) biosynthesis in the papaya laticifers indicate a papaya defense response against PMeV. However, such efforts failed, as the virus affected the plant latex. The effects described here suggest some advantages of the infection process, including facilitating the movement of the virus within the papaya plant. |
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Palavras-Chave: |
Mamão; Papaya. |
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Thesaurus NAL: |
Carica papaya; Latex; Laticifers; Meleira; Papaya meleira virus; Papaya sticky disease. |
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Categoria do assunto: |
-- |
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Marc: |
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100 1 $aRODRIGUES, S. P.
245 $aEffcts of the Papaya meleira virus on papaya latex structure and composition.$h[electronic resource]
260 $c2009
520 $aSpontaneous latex exudation is the main symptom of papaya sticky (meleira) disease caused by the Papaya meleira virus (PMeV), a double-stranded RNA (dsRNA) virus. This paper describes different effects of PMeV on papaya latex. Latex samples were subjected to different histochemical tests to evaluate their chemical composition. Additionally, the integrity of the latex particles was assessed by transmission and scanning electron microscopy analysis. Biochemical and micro- and macro-element measurements were performed. PMeV dsRNA extraction was performed to evaluate the interaction of the virus with the latex particles. Sticky diseased latex was positive for alkaloid biosynthesis and showed an accumulation of calcium oxalate crystals. PMeV also increased H(2)O(2) synthesis within sticky diseased laticifers. The protein, sugar and water levels were altered, probably due to chemical changes. The morphology of the latex particles was further altered; PMeV particles seemed to be bound to the latex particles. The alkaloid and H(2)O(2) biosynthesis in the papaya laticifers indicate a papaya defense response against PMeV. However, such efforts failed, as the virus affected the plant latex. The effects described here suggest some advantages of the infection process, including facilitating the movement of the virus within the papaya plant.
650 $aCarica papaya
650 $aLatex
650 $aLaticifers
650 $aMeleira
650 $aPapaya meleira virus
650 $aPapaya sticky disease
653 $aMamão
653 $aPapaya
700 1 $aCUNHA, M. da.
700 1 $aVENTURA, J. A.
700 1 $aFERNANDES, P. M. B.
773 $tBIOTIC AND BIOTIC STRESS$gv. 28, n. 5, p. 861-871, 2009.
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