103 research outputs found
Detecção precoce do Greening em citros usando espectroscopia de fluorescĂȘncia induzida por laser (LIFS).
Comparative morpho-anatomical studies of the lesions caused by citrus leprosis virus on sweet orange
Avaliação da precocidade do diagnĂłstico do Greening utilizando espectroscopia de fluorescĂȘncia induzida por laser (LIFS).
Brevipalpus mites of economic and quarantine importance - integrating morphology and molecular information to advance their systematics.
Brevipalpus mites are considered the most important pests within the Tenuipalpidae. The three main species, B. californicus (Banks), B. obovatus Donnadieu and B. phoenicis (Geijskes), have been incriminated as vectors of phytovirus. Dissemination of Brevipalpus mites associated to plant material and viruses represent an imminent threat to agriculture and ornamental industries. Systematics and phylogeny of Brevipalpus mites is of concern. The three mentioned species have been consistently confused and misidentified. The hypothesis that B. phoenicis represents a species complex has been analyzed. The quarantine species, B. chilensis Baker, is morphologically very close to B. obovatus, a species found worldwide, and taxonomists have discussed their possible synonymy.Abstract 32
Evaluations of the effects of candidatus liberibacter asiaticus on inoculated citrus plants using laser-induced breakdown spectroscopy and chemometric tools.
Huanglongbing (ex-greening) dos citros: desenvolvendo abordagens biotecnolĂłgicas de manejo
O huanglongbing (HLB, ex-greening) dos citros Ă© considerado a principal doença da cultura em todo o mundo e tem causado prejuĂzos significativos ao Brasil. O controle da doença tem sido realizado atravĂ©s da erradicação de plantas sintomĂĄticas e aplicação de inseticidas, mas hĂĄ uma grande demanda por estratĂ©gias alternativas, menos onerosas e menos danosas ao ambiente.O projeto propĂ”e, como estratĂ©gia de manejo a curto prazo, uma nova abordagem de controle do vetor, utilizando-se estirpes de Bacillus thuringiensis. PropĂ”e tambĂ©m abordagens de mĂ©dio e longo prazos, como genoma funcional de laranja infectada, transformação genĂ©tica e genoma completo de citros dentro do ConsĂłrcio Internacional (ICCG). Para tanto, agregarĂĄ ferramentas de biotecnologia, principalmente a partir do CitEST, base de dados de genoma expresso de citros.O projeto claramente demonstra seu carĂĄter multi e interdisciplinar, que tem como objetivo principal, alĂ©m de buscar alternativas de controle biolĂłgico do psilĂdeo, ampliar e aprimorar o conhecimento sobre o genoma dos citros e as interaçÔes planta-patĂłgen
An annotated list of ornamentals naturally found infected by Brevipalpus mite-transmitted viruses
Taxonomy of the order Mononegavirales: update 2016
In 2016, the order Mononegavirales was emended through the addition of two new families (Mymonaviridae and Sunviridae), the elevation of the paramyxoviral subfamily Pneumovirinae to family status (Pneumoviridae), the addition of five free-floating genera (Anphevirus, Arlivirus, Chengtivirus, Crustavirus, and Wastrivirus), and several other changes at the genus and species levels. This article presents the updated taxonomy of the order Mononegavirales as now accepted by the International Committee on Taxonomy of Viruses (ICTV)
Comportamento de hĂbridos de citros em relação Ă infecção natural pelo Citrus tristeza virus e Ă presença de sintomas de descamamento eruptivo
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