1974/11/01 by J. A. BAILEY, J.A. Bailey, G. G. VINCENT +2
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Plant Parasitism and Resistance #Plant and animal studies #Plant biochemistry and biosynthesis
paper · doi:10.1099/00221287-85-1-57
openalex publication_date 1974/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
SUMMARY: The diterpenes sclareol and 13-epi-sclareol were isolated as a eutectic mixture from leaves of Nicotiana glutinosa. These compounds were probably present in liquid droplets which occurred on the leaf surface. These diterpenes did not prevent germination of fungal spores but markedly inhibited the radial extension of colonies growing on agar. This inhibition is shown to be due to an effect on the morphology of the fungi in which the degree of hyphal branching is increased. The possibility that sclareol/13-epi-sclareol influence the growth-regulatory processes of fungal hyphae and the potential of these compounds to affect growth of fungi on the surface of leaves of N. glutinosa is discussed.