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A possible mechanism for exclusion of plant viruses from embryonic and meristemic tissues

A possible mechanism for exclusion of plant viruses from embryonic and meristemic tissues

Research in Virology 140(5): 453-455

The exclusion of viruses from plant meristems and most seed embryos is discussed. Intracellular spread is thought to be via plasmodesmata and long distance spreading via the vascular system. The exposed N-terminal region of the viral coat protein is thought to contain the recognition site needed for viral translocation. It is suggested from research on potyviruses that a cellular protease prevents viral spread and propagation in meristems and in embryonic tissues.

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Accession: 001740744

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PMID: 2685954

DOI: 10.1016/s0923-2516(89)80123-2

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