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Host-specific loss of sequences of an alfalfa mosaic virus isolate during systemic infection.

08:00 EDT 11th August 2019 | BioPortfolio

Summary of "Host-specific loss of sequences of an alfalfa mosaic virus isolate during systemic infection."

Infectivity of an alfalfa mosaic virus (AMV) isolate from Leonotis nepetaefolia in different tomato cultivars was analyzed. Symptoms typical of AMV infection were observed in indicator plants, but not in Flora Dade and Rio Grande tomato cultivars; however, mild symptoms were observed in cv. Rutgers. Furthermore, at least 1 kb of the 3´ segment of RNA 2 and the coat protein gene were missing in systemic leaves of inoculated Rio Grande and Flora Dade plants, while in cv. Rutgers infected with this AMV strain all genomic components were detected. Northern blot analysis of plants infected with the aforementioned AMV isolate confirmed the absence of the CP gene, but suggested rearrangements in both RNA 2 and 3. Factors that may affect differential movement or systemic accumulation of genomic components in multipartite viruses in plants are discussed.

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Name: Virus research
ISSN: 1872-7492
Pages: 197703

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Medical and Biotech [MESH] Definitions

A genus of the family BROMOVIRIDAE with a wide host range. Transmission is by aphids and the type species is ALFALFA MOSAIC VIRUS.

The type species of the genus ALFAMOVIRUS that is non-persistently transmitted by aphids.

Widely used technique which exploits the ability of complementary sequences in single-stranded DNAs or RNAs to pair with each other to form a double helix. Hybridization can take place between two complimentary DNA sequences, between a single-stranded DNA and a complementary RNA, or between two RNA sequences. The technique is used to detect and isolate specific sequences, measure homology, or define other characteristics of one or both strands. (Kendrew, Encyclopedia of Molecular Biology, 1994, p503)

A spherical RNA satellite virus which requires an obligatory helper TOBACCO MOSAIC VIRUS for replication.

A genus of plant viruses of the family BROMOVIRIDAE, which infect cucurbits and solanaceous plants. Transmission occurs via aphids in a non-persistent manner, and also via seeds. The type species Cucumber mosaic virus, a CUCUMOVIRUS, should not be confused with Cucumber green mottle mosaic virus, a TOBAMOVIRUS.

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