103 research outputs found

    Brevipalpus mites of economic and quarantine importance - integrating morphology and molecular information to advance their systematics.

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    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

    Huanglongbing (ex-greening) dos citros: desenvolvendo abordagens biotecnolĂłgicas de manejo

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    O huanglongbing (HLB, ex-greening) dos citros é considerado a principal doença da cultura em todo o mundo e tem causado prejuízos significativos ao Brasil. O controle da doença tem sido realizado através da erradicação de plantas sintomåticas e aplicação de inseticidas, mas hå uma grande demanda por estratégias alternativas, menos onerosas e menos danosas ao ambiente.O projeto propÔe, como estratégia de manejo a curto prazo, uma nova abordagem de controle do vetor, utilizando-se estirpes de Bacillus thuringiensis. PropÔe também abordagens de médio e longo prazos, como genoma funcional de laranja infectada, transformação genética e genoma completo de citros dentro do Consórcio Internacional (ICCG). Para tanto, agregarå ferramentas de biotecnologia, principalmente a partir do CitEST, base de dados de genoma expresso de citros.O projeto claramente demonstra seu caråter multi e interdisciplinar, que tem como objetivo principal, além de buscar alternativas de controle biológico do psilídeo, ampliar e aprimorar o conhecimento sobre o genoma dos citros e as interaçÔes planta-patógen

    Taxonomy of the order Mononegavirales: update 2016

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    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)
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