Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005

Abstract It is quite important to develop the microorganism resources with biocontrol capacity for rice blast. This study evaluated Bacillus subtilis JN005 growth promotion and efficacy against Magnaporthe oryzae . Results showed that seeds treated 1 × 10 7 cfu/mL suspension of B. had 16% germination energy, 14% rate, 15% index, 270% vigor index compared those sterile water (control). In pot experiments, strain-treated plants exhibited notable increase in plant height, root length, stem circumference, fresh weight, as well higher concentration chlorophyll a, b, total leaves. Rice leaves inoculated strain resulted increased activities defense-related enzymes, including peroxidase (POD), phenylalanine ammonialyase (PAL), superoxide dismutase (SOD), catalase (CAT) M. -inoculated treatments. vitro bacterial or control treatment lower disease incidence curative preventive groups by 79% 76%, respectively. Field experiment after spraying suspension, rates on controlling blast were (56.82 ± 1.12)% (58.39 3.05)% at seedling maturity stages, respectively, production yield was (524.40 17.88) g/m 2 Therefore, could be a promising biological agent blast, thereby warranting further investigation its efficacy.