Polymyxin B₁ and E₂ From Paenibacillus polymyxa Y-1 for Controlling Rice Bacterial Disease.

ABSTRACT: To discover novel microbial pesticide for controlling rice bacterial disease, polymyxin B₁ and E₂ were firstly isolated from the supernatant of fermentation broth of Paenibacillus polymyxa Y-1 by bioactivity tracking separation. It is shown that polymyxin B₁ and E₂ had remarkable in vitro inhibitory activities to Xanthomonas oryzae pv. oryzae (Xoo) and Xanthomonas oryzae pv. oryzicola (Xoc) with the EC₅₀ values of 0.19 μg/ml and 0.21 μg/ml against Xoo, and 0.32 μg/ml and 0.41 μg/ml against Xoc, respectively, which were better than those of Zhongshengmycin (0.31 μg/ml and 0.73 μg/ml) and Bismerthiazol (77.48 μg/ml and 85.30 μg/ml). Polymyxins B₁ and E₂

SUBMITTER: Yi W 

PROVIDER: S-EPMC8995708 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature