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THE REACTION OF VIRUS‐INFECTED POTATO PLANTS TO PHYTOPHTHORA INFESTANS
Author(s) -
MÜLLER K. O.,
MUNRO J.
Publication year - 1951
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1951.tb07848.x
Subject(s) - phytophthora infestans , biology , blight , inoculation , virus , virology , horticulture
The growth of Phytophthora infestans was retarded on leaves of potato plants that had been artificially inoculated with virus X or with virus Y. Using different virus strains and potato varieties, the effect of virus infection on blight development was found to be greater, the more severe the systemic virus symptoms exhibited on the infected leaves before P. infestans inoculation. The development of the fungus was never increased by virus infection. The reduced blight development on virus‐infected leaves is partially caused by an increase of resistance to infection. It is also suggested that virus infection alters the nutritional status of leaves to one less favourable for the development of P. infestans.