Antimicrobial peptides that have antibacterial activity against the Gram-negative bacteria S.marcescens. Has antifungal activity against D.coniospora (PubMed:15048112, PubMed:19380113). May play a role in response to physical injury and osmotic stress (PubMed:18394898, PubMed:19380113). Weakly or not expressed in absence of infection. Upon infection by D.coniospora, it is expressed in hypoderm. Also expressed in perivulval cells when D.coniospora spores adhere to this region (PubMed:11717458, PubMed:15048112, PubMed:18394898, PubMed:19380113). Expressed in hypodermis upon physical injury (PubMed:18394898). Upon D.coniospora and S.marcescens infection (PubMed:15048112, PubMed:19380113). Upon physical injury and osmotic stress (PubMed:19380113). Belongs to the YARP (YGGW-amide related peptide) family.