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Conference abstract, 2014

GENE TRANSCRIPTION CHANGES DURING COMPATIBLE AND INCOMPATIBLE INFECTIONS OF POTATO BY GLOBODERA ROSTOCHIENSIS

Walter, Abigail; Alexandersson, Erik; Andreasson, Erik

Abstract

The golden potato cyst nematode,Globodera rostochiensis, is one of the most important pests of potato in Sweden. Several pathotypes of the nematode exist, and they may be controlled by one of several sources of single-gene resistance in potato. Here we report that SW93-1015, a breeding line from the potato breeding program at SLU Alnarp, has phenotypic resistance to the Ro1/4 pathotype ofG. rostochiensis. Reproduction ofG. rostochiensispathotype Ro1/4 on SW93-1015 is approximately 5% of reproduction on the susceptible cultivar Desiree. To further investigate the interaction between potato cyst nematodes and susceptible and resistant host plants, changes in gene transcription were monitored just after root penetration and during syncytium formation in Desiree and SW93-1015 potato plants infected with Ro1/4G. rostochiensis.RNA expression in root tissue was analysed on a microarray at 0, 8, and 48 h post-infection, corresponding to pre-infection, root penetration, and early syncytium formation. Changes in gene transcription over the process of infection in susceptible and resistant genotypes are discussed. The resistance will be further investigated using a crossing population if Desiree and SW93-1015.

Published in

Journal of Nematology
2014, Volume: 46, number: 2, pages: 253-253

Conference