Biologia plantarum 48:305-307, 2004 | DOI: 10.1023/B:BIOP.0000033462.71065.93

Induction of Ageotropic Response in Lettuce Radicle Growth by Epicuticular Flavonoid Aglycons of Dittrichia viscosa

E. Levizou1, P. Karageorgou1, Y. Petropoulou1, G. Grammatikopoulos1, Y. Manetas1,*
1 Laboratory of Plant Physiology, Department of Biology, University of Patras, Patras, Greece

Thirteen flavonoid aglycons, contained in the strongly allelopathic epicuticular exudates of Dittrichia viscosa, were investigated for their effects on lettuce seedling radicle growth. Concerning radicle length and mass, variable results were obtained, with most of the substances having no effect, some being inhibitory and some even promotive. Shoot mass was slightly reduced in four cases. Seed germination rates, root hair and lateral root formation were not affected either. Three of the compounds (namely quercetin 3,3-dimethylether, naringenin and eriodictyol) induced a strong ageotropic response in radicle growth.

Keywords: allelopathy; eriodictyol; naringenin; quercetin 3,3-dimethylether
Subjects: allelopathy, allelochemicals; apigenin; Dittrichia viscosa; eriodictyol; flavonoid aglycons; Inula viscosa; kaempferol; lettuce, radicle; luteolin; naringenin; quercetin; rhamnetin; taxifolin

Published: June 1, 2004Show citation

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Levizou, E., Karageorgou, P., Petropoulou, Y., Grammatikopoulos, G., & Manetas, Y. (2004). Induction of Ageotropic Response in Lettuce Radicle Growth by Epicuticular Flavonoid Aglycons of Dittrichia viscosa. Biologia plantarum, 48(2), 305-307. doi: 10.1023/B:BIOP.0000033462.71065.93.
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