Plant Pathology (2010) 59, 1121-1132

P. Kogovsek, M. Pompe-Novak, S. Baebler, A. Rotter, L. Gow, K. Gruden, G.D. Foster, N. Boonham and M. Ravnikar (2010)
Aggressive and mild Potato virus Y isolates trigger different specific responses in susceptible potato plants
Plant Pathology 59 (6), 1121-1132
Abstract: Differences in the early responses of two potato cultivars, Igor and Nadine, to two isolates of Potato virus Y (PVY), the aggressive PVY^NTN and the mild PVY^N, were monitored. Microarray and quantitative real-time PCR analyses were carried out to identify differentially expressed genes after inoculation with each virus isolate. Additionally, symptom severity and development was observed and the amount of virus isolate accumulated in systemically infected leaves was evaluated, where a significantly higher amount of PVY^NTN was detected. Microarray analysis revealed 572, 1288 and 1706 differentially expressed genes at 0·5, 12 and 48 h post-inoculation, respectively in cv. Igor, with a similar pattern observed in cv. Nadine. Microarray and quantitative real-time PCR results implied an earlier accumulation of sugars and lower photosynthesis in leaves inoculated with the aggressive isolate than in leaves inoculated with the mild isolate. The PVY^NTN isolate did not activate early differential expression of the Fe-superoxide dismutase and pectin methylesterase inhibitor (PMEI) genes, indicating a delay in plant response relative to that following PVY^N inoculation. Differences in the expression of the ß-glucanase-I gene were also observed in early plant responses to inoculation with each virus isolate.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Polona Kogovsek, Neil Boonham, Marusa Pompe-Novak, Spela Baebler

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Potato virus Y	Potato (Solanum tuberosum)