ASTUA, J. de F.

CHABI-JESUS, C.

KITAJIMA, E. W.

RAMOS-GONZÁLEZ, P. L.

TASSI, A. D.

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cos 8” International Conference (Hybrid Mode) Plant Pathology: Retrospect and Prospects March 23-26, 2022 S.C. Dubey, V. Celia Chalam, K.S. Hooda, M.S. Saharan, Kalyan K. Mondal, Atul Kumar, Malkhan S. Gurjar, G. Prakash, Robin Gogoi, R.P. Ghasolia, Rajesh K. Bagri, Anand Kumar Meena, B.S. Chandrawat, Pinki Sharma, M. Raja, Shaily Javeria (eds.) 2022, IPS 8th International Conference on “Plant Pathology: Retrospect and Prospects”, March 23-26, 2022 at SKN Agriculture University, Jobner-Jaipur, Rajasthan India pp. ILD4(2B): Viruses transmitted by Brevipalpus (Acari: Tenuipalpidae) mites: Overview and updates Juliana ESSE Astia', PL. Ramos-González, C. Ghabi-Jesusta, A D. Tassiês, E W. Kitajimao 'Embrapa Cassava and Fruifs, Brazil, *Instifluto Biológico, Brazil, *ESALQ/USP. Brazil. Brevipalpus-transmitted viruses (BTVs) cause economically important diseases such as cítrus leprosis and coffee ringspot, which affect relevant crops mainly in the Americas. Additionally, at 40 8º” International Conference (Hybrid Mode) Plant Pathology: Retrospect and Prospects March 23-26, 2022 SKNAU, Jobner-Jaipur, Rajasthan least one of them, orchid fleck virus, naturally infects orchids worldwide and citrus in three American and African countries. Disease symptoms caused by BTVs are characterized by the presence of localized chlorotic, necrotic, or ringspot lesions on the aerial parts of the plants. There are no reports of BTVs invading thair hosts systemically under natural conditions, and they are all transmitted by Brevipalpus spp. mites in a persistent manner. Taxonomically, they are classified into genera Cilevirus (family Kifavíridae) o: Dichorhavirus (family Rhabdoviridae). Virions of cileviruses have short bacillitorm morphology, with bisegmented ss(+)RNA genomes oi -S and 5 kb, and typically six ORFs. The ICTV accepts three species of cileviruses, which are Phylogenetically related to other kitaviruses and arthropod-infecting nelorpiviruses, sandewaviruses, and centiviruses. Dichorhaviruses virions present short bacillitorm morphology with bisegmented ss(-)RNA genomes of - 6 kb each and six ORFs. So far, five species of dichorhaviruses are accepted by the ICTV, and thay are phylogenstically closer to viruses belonging to the genus Befanucilaorhabdowirus. Recently, five new cile-like kitaviruses were characterized in Hawaii, Iran, and Brazil. Four of them are transmitted by or have an association with, Brevipalpus mites. Three new tentative species of dichorhaviruses transmitted by Brevipalpus spp. are under characterization in Brazil. The increasing list of BTVs includes pathogens that infact a variety 0f plant hosts in expanding geographic regions and will be addressed in this talk. Support: Fapesp.

ILD4(2B): Viruses transmitted by Brevipalpus (Acari: Tenuipalpidae) mites: Overview and updates.

http://www.alice.cnptia.embrapa.br/bitstream/doc/1154174/1/2022-Freitas-Astua-J-et-al-IPS-8thIntConfPltPath-BTV-2.pdf

ILD4(2B): Viruses transmitted by Brevipalpus (Acari: Tenuipalpidae) mites: Overview and updates.

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