Data/hora: 23/06/2024 17:10:25

Biblioteca(s): | Biblioteca Rui Tendinha.
Data corrente: | 25/04/2016
Data da última atualização: | 28/09/2017
Autoria: | MAGANÃ-ÁLVARES, A.; DUTRA, J. C. V.; CARNEIRO, T.; BRITO-PÉREZ, D.; TAPIA-TUSSEL, R.; VENTURA, J. A.; HIGUERA-CIAPARA, I.; FERNANDES, P. M. B.; FERNANDES, A. A. R.
Afiliação: | Anuar Magaña-Álvarez, UFES; Jean Carlos Vencioneck Dutra, UFES; Tarcio Carneiro, UFES; Daisy Pérez-Brito, GeMBio; Raúl Tapia-Tussell, GeMBio; Jose Aires Ventura, Incaper; Inocencio Higuera-Ciapara, Centro de Investigación y Asistencia Tecnológica y Diseño del Estado de Jalisco; Patricia Machado Bueno Fernandes, UFES; Antonio Alberto Ribeiro Fernandes, UFES.
Título: | Physical characteristics of the leaves and latex of papaya plants infected with the Papaya meleira Virus.
Ano de publicação: | 2016
Fonte/Imprenta: | International Journal of Molecular Sciences, 17(4). pii: E574, abril 2016.
Idioma: | Português
Conteúdo: | Sticky disease, which is caused by Papaya meleira virus (PMeV), is a significant papaya disease in Brazil and Mexico, where it has caused severe economic losses, and it seems to have spread to Central and South America. Studies assessing the pathogen-host interaction at the nano-histological level are needed to better understand the mechanisms that underlie natural resistance. In this study, the topography and mechanical properties of the leaf midribs and latex of healthy and PMeV-infected papaya plants were observed by atomic force microscopy and scanning electron microscopy. Healthy plants displayed a smooth surface with practically no roughness of the leaf midribs and the latex and a higher adhesion force than infected plants. PMeV promotes changes in the leaf midribs and latex, making them more fragile and susceptible to breakage. These changes, which are associated with increased water uptake and internal pressure in laticifers, causes cell disruption that leads to spontaneous exudation of the latex and facilitates the spread of PMeV to other laticifers. These results provide new insights into the papaya-PMeV interaction that could be helpful for controlling papaya sticky disease.
Palavras-Chave: | Latex; Laticifer; Leaf midribs; Papaya meleira virus; Papaya sticky disease.
Thesaurus NAL: | Pathogen-host interaction.
Categoria do assunto: | V Taxonomia de Organismos
URL: | http://biblioteca.incaper.es.gov.br/digital/bitstream/item/1812/1/BRT-physicalcharacteristicsoftheleaves-ventura.pdf
Registro original: | Biblioteca Rui Tendinha (BRT)
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