Australasian Plant Pathology (1996) 25, 249-254

M.L Skotnicki, A.M. Mackenzie and A.J. Gibbs (1996)
Genetic variation of turnip yellow mosaic tymovirus within single plants of Cardamine lilacina
Australasian Plant Pathology 25 (4), 249-254
Abstract: An RNA hybrid mismatch polymorphism (RHMP) method was used to investigate genomic variation of turnip yellow mosaic tymovirus (TYMV) within single plants of its wild perennial host Cardamine lilacina. Two probes covering portions of the three TYMV genes were used to examine the viral RNA isolated directly from single shoots of the host plant. Up to 16 separate shoots of each infected plant, including some which were attached to others by their perennial rhizomatous bases, were analysed. The RHMP results demonstrated that TYMV often varied within single plants, and even within single shoots, in both regions of the genome tested. More within-plant viral variation was observed when shoots were collected from sites with many infected plants than from sites where few plants were infected, suggesting that proximity to other infected plants may facilitate coinfection and recombination between TYMV isolates.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tymovirus brassicae