Plant defensins are cystein - rich antibacterial peptides 植物防御素，是另一类阳离子抗菌多肽。
2.
Plant defensin disrupts the cell membrane of phytopathogen differently from cema that contacts directly with the cell membrane . plant defensins are thought to interact with specific receptor harboring in the cell membrane 由于对真菌，特别是丝状真菌有很强的抑制作用，而对植物细胞没有毒害作用，防御素有望在植物抗病基因工程中得到广泛应用。
