Feeding response of Aphis pomi, Myzus persicae, and Amphorophora agathonica to phlorizin
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TL;DR
Phlorizin was a probing deterrent to the non-apple feeding aphids, Myzus persicae and Amphorophora agathonica, and an ingestion deterrent to all three species although the threshold was lower for A. pomi.
Abstract
Phlorizin, a phenolic compound present only in the apple genus, Malus, was found to be neutral as a probing stimulus to Aphis pomi, an apple feeder, but was a probing deterrent to the non-apple feeding aphids, Myzus persicae and Amphorophora agathonica. Phlorizin was an ingestion deterrent to all three species although the threshold was lower for A. pomi. Apple can be utilized as a host by A. pomi since it feeds in the phloem which appears not to contain phlorizin.
