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dc.contributor.authorRODRIGUES, S. P.pt_BR
dc.contributor.authorCUNHA, M. da.pt_BR
dc.contributor.authorVENTURA, J. A.pt_BR
dc.contributor.authorFERNANDES, P. M. B.pt_BR
dc.contributor.otherUFES; UENF; Jose Aires Ventura, Incaper; UFES.pt_BR
dc.date.accessioned2016-05-24T13:55:22Z-
dc.date.available2016-05-24T13:55:22Z-
dc.date.created2009pt_BR
dc.date.issued2016-05-24pt_BR
dc.identifier.other11596pt_BR
dc.identifier.urihttp://biblioteca.incaper.es.gov.br/digital/handle/item/1939-
dc.descriptionSpontaneous 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.pt_BR
dc.languagept_BRpt_BR
dc.publisherBIOTIC AND BIOTIC STRESS, v. 28, n. 5, p. 861-871, 2009.pt_BR
dc.subjectMamãopt_BR
dc.subjectPapayapt_BR
dc.titleEffcts of the Papaya meleira virus on papaya latex structure and composition.pt_BR
dc.type--pt_BR
dc.ainfo.id10909pt_BR
dc.ainfo.lastupdate2016-05-24pt_BR
dc.ainfo.depositanteMerielem Frassonpt_BR
dc.subject.nalthesaurusCarica papayapt_BR
dc.subject.nalthesaurusLatexpt_BR
dc.subject.nalthesaurusLaticiferspt_BR
dc.subject.nalthesaurusMeleirapt_BR
dc.subject.nalthesaurusPapaya meleira viruspt_BR
dc.subject.nalthesaurusPapaya sticky diseasept_BR
dc.identifier.doi10.1007/s00299-009-0673-7pt_BR
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