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      Transmission and Pathogenicity of Papaya Virus E: Insights from an Experimental Papaya Orchard

      1 , 2 , 3 , 4 , 1 , 2
      Plant Disease
      Scientific Societies

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          Abstract

          A study was conducted to investigate epidemiological aspects of papaya virus E (PpVE), a cytorhabdovirus commonly found in papaya (Carica papaya L.) plantings in Ecuador. Besides papaya, PpVE was found in three Fabaceae weeds, including Rhynchosia minima, Centrosema plumieri, and Macroptilium lathyroides, the latter being the species with the highest virus prevalence. Greenhouse experiments showed that in M. lathyroides, single infections of PpVE induce only mild leaf mosaic, whereas in mixed infections with cowpea severe mosaic virus, PpVE contributes to severe mosaic. In papaya, PpVE did not induce noticeable symptoms in single or mixed infections with papaya ringspot virus. Transmission experiments confirmed that whiteflies (Bemisia tabaci) transmit PpVE in a semipersistent, nonpropagative manner.

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          Most cited references22

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          Changes to virus taxonomy and the Statutes ratified by the International Committee on Taxonomy of Viruses (2020)

          This article reports the changes to virus classification and taxonomy approved and ratified by the International Committee on Taxonomy of Viruses (ICTV) in March 2020. The entire ICTV was invited to vote on 206 taxonomic proposals approved by the ICTV Executive Committee at its meeting in July 2019, as well as on the proposed revision of the ICTV Statutes. All proposals and the revision of the Statutes were approved by an absolute majority of the ICTV voting membership. Of note, ICTV has approved a proposal that extends the previously established realm Riboviria to encompass nearly all RNA viruses and reverse-transcribing viruses, and approved three separate proposals to establish three realms for viruses with DNA genomes.
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            High Throughput Sequencing For Plant Virus Detection and Discovery

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              The family Rhabdoviridae: mono- and bipartite negative-sense RNA viruses with diverse genome organization and common evolutionary origins.

              The family Rhabdoviridae consists of mostly enveloped, bullet-shaped or bacilliform viruses with a negative-sense, single-stranded RNA genome that infect vertebrates, invertebrates or plants. This ecological diversity is reflected by the diversity and complexity of their genomes. Five canonical structural protein genes are conserved in all rhabdoviruses, but may be overprinted, overlapped or interspersed with several novel and diverse accessory genes. This review gives an overview of the characteristics and diversity of rhabdoviruses, their taxonomic classification, replication mechanism, properties of classical rhabdoviruses such as rabies virus and rhabdoviruses with complex genomes, rhabdoviruses infecting aquatic species, and plant rhabdoviruses with both mono- and bipartite genomes.
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                Author and article information

                Contributors
                (View ORCID Profile)
                Journal
                Plant Disease
                Plant Disease
                Scientific Societies
                0191-2917
                1943-7692
                February 01 2022
                February 01 2022
                : 106
                : 2
                : 685-690
                Affiliations
                [1 ]Centro de Investigaciones Biotecnológicas del Ecuador, Escuela Superior Politécnica del Litoral, Guayaquil 090101, Guayas, Ecuador
                [2 ]Facultad de Ciencias de la Vida, Escuela Superior Politécnica del Litoral, Guayaquil 090101, Guayas, Ecuador
                [3 ]U.S. Department of Agriculture-Agricultural Research Center, Horticultural Crops Research Unit, Corvallis, OR 97331, U.S.A.
                [4 ]U.S. Department of Agriculture-Agricultural Research Center, Electron and Confocal Microscopy Unit, Beltsville, MD 20705, U.S.A.
                Article
                10.1094/PDIS-08-21-1785-RE
                34601954
                dd99afa7-6101-4534-8a72-01392d36ff33
                © 2022
                History

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