ISSN:
1573-8469
Keywords:
Potyviridae
;
potato virus Y
;
detection
;
monoclonal antibodies
;
ELISA
;
virus transmission
;
aphids
;
transgenic resistance
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract An Austrian isolate of potato virus YNTN, the causal agent of potato tuber necrotic ringspot disease (PTNRD), was serologically compared with seven Dutch PVYN isolates. Using polyclonal and monoclonal antibodies, it was found indistinguishable from PVYN. Determination of the nucleotide sequence of the coat protein cistron and comparison of the deduced amino acid sequence with coat protein sequences of other potyviruses revealed a high level of homology with PVYN coat protein sequences. This confirmed the close taxonomic relationship of PVYNTN with the PVYN subgroup of potato virus Y. PVYNTN is able to overcome all resistance genes known so far in commercial potato cultivars. Remarkably, transgenic PVY-protected tobacco plants are also resistant to PVYNTN infection upon mechanical and aphid-mediated inoculation. These experiments indicate that genetically engineered resistance offers great potential in protection of potato to new aggressive strains of PVYN.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01876445
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