 The study identifies 61 CEP-like peptides encoded in the genomes of six root-not nematode species and demonstrates that exogenous application of an RKN CEP-like peptide can alter plant root phenotypes and increase plant nitrogen uptake. The study also suggests that parasite-induced changes in host metabolism may play a role in regulating plant nitrogen assimilation. This article was authored by Shova Mishra, Wei Ming Hu, and Peter DiGinero.