Germination self-inyhibitors of rust uredospores

Germination self-inyhibitors of rust uredospores

1972

REP.G2091

The germination self-inhibitro from uredospores of sunflower rust, corn rust and snapdragon rust was found to be methyl 3,4-dimethoxycinnamate. Studies carried out in darkness have shown clearly that the cis isomer of the ester is the only active form of the inhibitro from these spores and the spores of bean rus. This inhibitor also prevents germination of crown rust uredospores at low concentration. Methyl cis-ferulate was found to be the only active inhibitor of wheat stem rust uredospores, race 56. Uredospores of flax rust, race 1, and wheat stem rust, race 126-ANZ-6,7,were insensitive to either inhibitor.

v.2:347-355, PHYSIOLOGICAL PLANT PATHOLOGY

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