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Studies on Phytoalexins
Author(s) -
Cruickshank I. A. M.,
Perrin Dawn R.
Publication year - 1967
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1967.tb03000.x
Subject(s) - division (mathematics) , library science , biology , art history , mathematics , computer science , art , arithmetic
In a study of the effect of some further biological, physical, and chemical factors on the formation of pisatin, the following points were demonstrated: (1) Pisatin formation following heat treatment (45°C) or anaerobic storage was dependent on the duration of the exposure period. Delayed inoculation, following some treatments, resulted in an increased capacity of the host to form pisatin. Pisatin concentration and host susceptibility were inversely related. (2) Pisatin formation was stimulated by several saprophytic fungal species. (3) Detached pea pod tissues retained their capacity to form or release pisatin for 20 days following inoculation. (4) Pisatin was stable in the tissues of Pisum sativum and mycelium of Ascochyta pisi. (5) Pisatin was localized in inoculated tissues and did not diffuse to neighbouring healthy tissues. The formation of pisatin in relation to alterations in host metabolism is briefly discussed.