Defense peptides from barnyard grass (Echinochloa crusgalli L.) seeds

► A spectrum of novel defense peptides was isolated from Echinochloa crusgalli seeds. ► N-terminal primary sequences of these peptides were determined and it was shown that these molecules belong to cystein-rich plant peptides. ► There are peptides from three AMP families and two protease inhibitor families in barnyard grass seeds. ► The biological activity of isolated peptides against several phytopatogenic bacterial species and oomycete Phytophthora infestans was studied.