A peptide that binds the pea aphid gut impedes entry of Pea enation mosaic virus into the aphid hemocoel


Publication Type:

Journal Article


Virology, Volume 401, Number 1, p.107-16 (2010)


1096-0341 (Electronic)<br/>0042-6822 (Linking)

Accession Number:



Animals, Aphids/ virology, Insect Control, Insect Vectors/ virology, Intestinal Mucosa/metabolism/virology, Luteoviridae/ physiology, Peas/ virology, Peptides/isolation & purification/ metabolism, Plant Diseases/ prevention & control/virology, Prunus/parasitology, Soybeans/parasitology, Viral Proteins/isolation & purification/metabolism, Virus Attachment


Development of ways to block virus transmission by aphids could lead to novel and broad-spectrum means of controlling plant viruses. Viruses in the Luteoviridae enhanced are obligately transmitted by aphids in a persistent manner that requires virion accumulation in the aphid hemocoel. To enter the hemocoel, the virion must bind and traverse the aphid gut epithelium. By screening a phage display library, we identified a 12-residue gut binding peptide (GBP3.1) that binds to the midgut and hindgut of the pea aphid Acyrthosiphon pisum. Binding was confirmed by labeling the aphid gut with a GBP3.1-green fluorescent protein fusion. GBP3.1 reduced uptake of Pea enation mosaic virus (Luteoviridae) from the pea aphid gut into the hemocoel. GBP3.1 also bound to the gut epithelia of the green peach aphid and the soybean aphid. These results suggest a novel strategy for inhibiting plant virus transmission by at least three major aphid pest species.


Liu, Sijun<br/>Sivakumar, S<br/>Sparks, Wendy O<br/>Miller, W Allen<br/>Bonning, Bryony C<br/>Research Support, Non-U.S. Gov't<br/>Research Support, U.S. Gov't, Non-P.H.S.<br/>United States<br/>Virology. 2010 May 25;401(1):107-16. doi: 10.1016/j.virol.2010.02.009. Epub 2010 Mar 11.