Inhibition of seed germination by quinolizidine alkaloids

✍ Scribed by Michael Wink

• Book ID: 104756169
• Publisher: Springer-Verlag
• Year: 1983
• Tongue: English
• Weight: 347 KB
• Volume: 158
• Category: Article
• ISSN: 0032-0935
• DOI: 10.1007/bf00397339

✦ Synopsis

Germination of Lactuca sativa L. was inhibited by mixtures of quinolizidine alkaloids. The alkaloid esters resulted in the strongest inhibition: 6 mM 13-tigloyloxylupanine inhibited germination by 100%, whereas the other lupin alkaloids, such as lupanine and sparteine, gave a 45 and 20% inhibition, respectively. Seedlings of Lupinus albus L., which are not affected by quinolizidine alkaloids, excrete lupanine and 13-tigloyloxylupanine into the surrounding medium by their roots. It is assumed that lupin alkaloids are potential compounds of plant-plant interaction (i.e. allelopathy) besides their role in plant-herbivore interrelations.