Effects of a protease inhibitor protein from Xenorhabdus bovienii on physiology of pea aphid (Acyrthosiphon pisum)

- The effects of the Xbpi-1protease inhibitor protein on Acyrthosiphon pisum were examined.
- Results indicated that Xbpi-1protease inhibitor protein reduced activity of aminopeptidase in A. pisum.
- The sugar and lipid concentrations per aphid were reduced by the Xbpi-1.