In 1990s papers have been published suggesting the existence of an animal atrial natriuretic peptide (ANP) homologues in plant organisms. Multiple influence of egzogenic atrial natriuretic pepti- de into plant metabolism, growth and development has been showed. Plant ANP immunohomologues has been studied as well. However, the plant nucleotide or aminoacid sequence similar to the animal NP have not yet been published. The existence of plant NP homologues to the animal natriuretic pepti- des and genes encoding them was not established.