Effect of saponins and apigenin mixtures on feeding behavior of the pea aphid, Acyrthosiphon pisum Harris

• Published in: Biochemical systematics and ecology Vol. 55; pp. 137 - 144
• Main Authors: Goławska, Sylwia, Sprawka, Iwona, Łukasik, Iwona
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2014
• Subjects: Acyrthosiphon pisum; Agarose-sucrose gels; Aphididae; EPG; Flavonoids; Hemiptera; Insect feeding; Pea aphid; Saponins; Saponins; Insect feeding; Flavonoids; Pea aphid; EPG; Agarose-sucrose gels
• ISSN: 0305-1978; 1873-2925
• DOI: 10.1016/j.bse.2014.03.010

Electrical penetration graphs (DC EPG) were used to monitor the feeding behavior of the pea aphid Acyrthosiphon pisum Harris (Hemiptera: Aphididae) exposed to mixtures of saponins: 3GlcA, 28AraRhaXyl medicagenic acid glycoside (MAG) and zanhic acid tridesmoside (ZAD) with flavonoid apigenin, on agarose-sucrose gels. In general, mixtures of saponins with apigenin incorporated into agarose-sucrose gels resulted in a reduction in both the number of aphid probes and delayed their duration. Aphid feeding on gels impregnated with mixtures of the tested chemicals also showed a reduction in salivation into the gels and elongation of passive ingestion from the gels (EPG patterns g-E1 and g-E2, respectively). There were significant differences among the feeding behaviors of the pea aphids on gels containing mixtures of either MAG or ZAD with apigenin. These differences were also depended on the concentration and proportions of these compounds. [Display omitted] •Saponins in combinations with apigenin showed effects on pea aphid probing and feeding behavior.•Combinations studied compounds reduced the number of aphid probes and duration of salivation into the gels.•Saponins in conjunction with apigenin elongated duration of aphids probes corresponding to aphid feeding.•Differences depended on the presence of components, the concentration and the proportions of compounds.•Simultaneous consumption of compounds eliminated inhibition effects associated with consumption of either compound alone.