Viruses (2018) 10 (11 - 612)

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Francesco Di Serio, Silvia Ambrós, Teruo Sano, Ricardo Flores and Beatriz Navarro (2018)
Viroid diseases in pome and stone fruit trees and Koch's postulates: A critical assessment
Viruses 10 (11 - 612)
Abstract: Composed of a naked circular non-protein-coding genomic RNA, counting only a few hundred nucleotides, viroids—the smallest infectious agents known so far—are able to replicate and move systemically in herbaceous and woody host plants, which concomitantly may develop specific diseases or remain symptomless. Several viroids have been reported to naturally infect pome and stone fruit trees, showing symptoms on leaves, fruits and/or bark. However, Koch's postulates required for establishing on firm grounds the viroid etiology of these diseases, have not been met in all instances. Here, pome and stone fruit tree diseases, conclusively proven to be caused by viroids, are reviewed, and the need to pay closer attention to fulfilling Koch's postulates is emphasized.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
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Database assignments for author(s): Francesco Di Serio

Research topic(s) for pests/diseases/weeds:
review


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Pear blister canker viroid Pear (Pyrus)
Apple scar skin viroid Apple (Malus)
Hop stunt viroid Plum/prune (Prunus domestica)
Peach latent mosaic viroid Peach/nectarine (Prunus persica)
Apple dimple fruit viroid Apple (Malus)