Summary
The quinolizidine alkaloids sparteine, lupanine and 13-tigloyl-oxylupanine and the indole alkaloid gramine inhibited the germination of conidia ofErysiphe graminis f.sp.hordei Marchal and also the further development to appressoria. Half-maximal inhibitory concentrations of these alkaloids were 1–5 mmol/l. This result provides further evidence for a role of alkaloids as chemical defense compounds in plants.
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Wippich, C., Wink, M. Biological properties of alkaloids. Influence of quinolizidine alkaloids and gramine on the germination and development of powdery mildew, Erysiphe graminis f.sp. hordei. Experientia 41, 1477–1479 (1985). https://doi.org/10.1007/BF01950046
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DOI: https://doi.org/10.1007/BF01950046