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Ramos-González PL, Dias Arena G, Tassi AD, Chabi-Jesus C, Watanabe Kitajima E, Freitas-Astúa J. Kitaviruses: A Window to Atypical Plant Viruses Causing Nonsystemic Diseases. ANNUAL REVIEW OF PHYTOPATHOLOGY 2023; 61:97-118. [PMID: 37217202 DOI: 10.1146/annurev-phyto-021622-121351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Kitaviridae is a family of plant-infecting viruses that have multiple positive-sense, single-stranded RNA genomic segments. Kitaviruses are assigned into the genera Cilevirus, Higrevirus, and Blunervirus, mainly on the basis of the diversity of their genomic organization. Cell-to-cell movement of most kitaviruses is provided by the 30K family of proteins or the binary movement block, considered an alternative movement module among plant viruses. Kitaviruses stand out for producing conspicuously unusual locally restricted infections and showing deficient or nonsystemic movement likely resulting from incompatible or suboptimal interactions with their hosts. Transmission of kitaviruses is mediated by mites of many species of the genus Brevipalpus and at least one species of eriophyids. Kitavirus genomes encode numerous orphan open reading frames but RNA-dependent RNA polymerase and the transmembrane helix-containing protein, generically called SP24, typify a close phylogenetic link with arthropod viruses. Kitaviruses infect a large range of host plants and cause diseases of economic concern in crops such as citrus, tomato, passion fruit, tea, and blueberry.
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Affiliation(s)
| | - Gabriella Dias Arena
- Instituto Biológico, URL Biologia Molecular Aplicada, São Paulo, Brazil; ,
- Departamento de Fitopatologia e Nematologia, Escola Superior de Agricultura Luiz de Queiroz (ESALQ), Universidade de São Paulo, Piracicaba, São Paulo, Brazil
| | - Aline Daniele Tassi
- Instituto Biológico, URL Biologia Molecular Aplicada, São Paulo, Brazil; ,
- Tropical Research and Education Center, University of Florida, Homestead, Florida, USA
| | - Camila Chabi-Jesus
- Instituto Biológico, URL Biologia Molecular Aplicada, São Paulo, Brazil; ,
- Departamento de Fitopatologia e Nematologia, Escola Superior de Agricultura Luiz de Queiroz (ESALQ), Universidade de São Paulo, Piracicaba, São Paulo, Brazil
| | - Elliot Watanabe Kitajima
- Departamento de Fitopatologia e Nematologia, Escola Superior de Agricultura Luiz de Queiroz (ESALQ), Universidade de São Paulo, Piracicaba, São Paulo, Brazil
| | - Juliana Freitas-Astúa
- Instituto Biológico, URL Biologia Molecular Aplicada, São Paulo, Brazil; ,
- Embrapa Mandioca e Fruticultura, Cruz das Almas, Bahia, Brazil
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