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Interactions between steroids in the growth of Phytophthora
Author(s) -
Elliott C. G.,
Knights B. A.
Publication year - 1969
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740200708
Subject(s) - phytophthora cactorum , oospore , sterol , phytophthora , biology , pythium , host (biology) , phycomycetes , botany , steroid , phytophthora sojae , cholesterol , plant sterols , mycelium , phytosterol , microbiology and biotechnology , food science , biochemistry , hormone , horticulture , inoculation , ecology
It is shown that several steroids in mixture with cholesterol inhibit the cholesterol‐dependent oospore production by Phytophthora cactorum in culture. It is suggested that in plants, precursors of the phytosterols might compete with sterols to reduce the sporulation of pathogens, such as Phytophthora and Pythium spp., which are dependent on the r hosts for the sterols required for their reproduction. A high proportion of precursor compared with sterol would thus enhance the disease resistance of the host.