微生物几丁质酶在植物病害生物防治中的应用

The application of microoganism chitinase in biocontrol of plant diseases

生防菌几丁质酶能水解病原菌细胞壁的几丁质,抑制病原菌的生长、增殖;几丁寡糖(几丁质酶酶解几丁质的产物)具有抗菌、抑菌功效,可直接杀死病原菌.几丁寡糖还可作为植物功能调节剂,调节、促进植物的生长发育,并可作为激发子启动植物的防御反应,使植物产生更多的防御蛋白以增强植物对病原物的抗性,免受病原物的进一步侵害.

Biocontrol microorganic chitinases can effectively inhibit the growth and reproduction of phytopathogen by hydrolying cell wall. Nacetylchitooligosaccharides can inhibit strongly phytopathogen. Nacetylchitooligosaccharides can regulate and stimulate the growth of plant as plant functional regulator,and induce plant to produce more defense proteins as elicitor,which can increase plant resistance against phytopathogen.