Research progress of nodulation-specific peptides rich in cysteine in legumes

• 1、Hunan University ,College of Biology

Abstract：Polypeptide signaling molecules are widely found in animals, bacteria and fungi, and are involved in the regulation of their growth and development. Recent studies have shown that there are polypeptide signaling molecules similar to animals and yeasts in plants, which play an important regulatory role in plant growth, development, reproduction and response to the external environment. NCR (Nodule cysteine-rich peptides, NCR cysteine-rich nodule-specific polypeptide) is one of them, which exists specifically in the legumes inverted repeat deletion branch (Inverted Repeat Lacking Clade IRLC lacks inverted repeats). It has been proved to be involved in mediating the symbiotic process of nitrogen fixation bResearch progress of nodulation-specific peptides rich in cysteine in legumesetween plant hosts and rhizobia, and has functions such as regulating the recognition of rhizobia to plant hosts, the terminal differentiation of rhizobia, and the survival of bacteria. In this review, we introduce the expression, molecular characteristics, functions in symbiosis, and similarities and differences with antimicrobial peptides of NCR peptides to provide references for further research on NCR peptides.

Keywords： Legumes IRLC plants NCR structure and expression terminal differentiation bacterial survival NCR and antimicrobial peptides