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Morphology and Ultrastructure of the Virus Particles. Plant Viruses in situ in Plant and Vector

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Abstract

In essence, a plant virus particle consists of a strand of ribonucleic acid (RNA) surrounded by a protein coat, the purpose of which is to afford a protective covering for the nucleic acid. The nomenclature suggested for the particle and its components is as follows: the whole particle is called a ‘virion’, the protein coat is the ‘capsid’ and the individual protein subunits are known as ‘capsomeres’. The structure composed of the nucleic acid surrounded by the capsid is the ‘nucleocapsid’. Essentially, all viruses seem to have their outside surfaces composed of regularly arranged protein units, with their nucleic acid carried internally. The type of pattern in which the protein units are arranged differs with different viruses, as also must the position and orientation of the nucleic acid relative to the protein covering (Bawden, 1964).

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© 1977 K. M. Smith

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Smith, K.M. (1977). Morphology and Ultrastructure of the Virus Particles. Plant Viruses in situ in Plant and Vector. In: Plant Viruses. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-9653-9_5

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  • DOI: https://doi.org/10.1007/978-94-010-9653-9_5

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-412-14740-1

  • Online ISBN: 978-94-010-9653-9

  • eBook Packages: Springer Book Archive

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