%0 Journal Article %A Kirkham, D. S. %A Flood, A. E. %T Some Effects of Respiration Inhibitors and o-Coumaric Acid on the Inhibition of Sporulation in Venturia inaequalis %D 1963 %J Microbiology, %V 32 %N 1 %P 123-129 %@ 1465-2080 %R https://doi.org/10.1099/00221287-32-1-123 %I Microbiology Society, %X SUMMARY: The non-competitive inhibitors fluoroacetate and arsenite inhibited sporulation and respiration of Venturia inaequalis (Cke.) Wint. to a greater extent than malonate. They also restricted growth. o-Coumaric acid acted similarly to the non-competitive inhibitors but, while not inhibiting growth, it caused changes in the colour of the mycelium, suggesting an altered metabolism. Arsenite increased α-ketoglutarate in the medium and to some extent pyruvate, while o-coumaric acid produced only a slight increase in the concentration of pyruvate. No detectable amounts of succinic acid resulted from the presence of malonate. Injection of o-coumaric acid into scab-infected apple shoots decreased the incidence of disease; malonate had the opposite effect and was strongly phytotoxic. %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-32-1-123