Updated publication reference for PubMed record(s): 32395580. Plant natriuretic peptides (PNPs) comprise a class of systemically mobile molecules functioning as hormonal regulators of ion and fluid balance. Since the molecular mode of action of PNPs remains unclear, a large-scale protein-protein interaction study has been undertaken to identify interactors of the model PNP present in Arabidopsis thaliana, termed AtPNP-A.