Effect of anthracnose on the growth , physiology, and biochemistry in Vicia sativa

Common vetch (Vicia sativa) is an important pasture and green manure, which has high economic value. Colletotrichum lentis is a new pathogen of common vetch that affect the growth of Vicia sativa. In this study, a pot experiment in greenhouse was established to study the effects of anthracnose on the growth and nodule development of common vetch V. sativa CV, Lanjian No.3 including plant growth, root nodule formation, disease-related enzymes, and other disease-resistant related substances. After the pathogen infected the plants, the two hydrolase activities were increased by 33.09% and 10.74%, respectively, and the concentrations of lignin and jasmonic acid were increased by 26.77% and 70.34%, respectively. In addition, compared with the control treatment, the disease led to a decrease of 26.90%～40.00% (P < 0.01) in the aboveground and underground biomass of plants, and a decrease of 42.25% in the effective nodules (P < 0.05). Therefore, anthracnose causes serious damage to the disease-related system of common vetch, and directly affects the yield and quality of common vetch. Close attention should be paid to the occurrence of this disease and accelerate the development of prevention and control technologies should be accelerated.