Isolation and characterization of metabolites from Bacillus licheniformis MH48 with antifungal activity against plant pathogens.

In this study, we isolated Bacillus licheniformis MH48 from rhizosphere soil and demonstrated that this strain shows significant antifungal activity against Rhizoctonia solani, Colletotrichum gloeosporioides, and Phytophthora capsici. Our results showed that a 50% concentration of bacterial cell-free culture filtrate of B. licheniformis MH48 shows strong activity against fungal pathogens.

Isolation and characterization of an antimicrobial lipopeptide produced by Paenibacillus ehimensis MA2012.

In this study, a novel lipopeptide antibiotic was isolated from the culture supernatant of Paenibacillus ehimensis strain MA2012. After analyses by mass spectrometry (MS), nuclear magnetic resonance (NMR), and high resolution mass spectrometry (HR-MS/MS) the compound was identified to be polypeptin C consisting of 3-hydroxy-4-methyl-hexanoic acid moiety and nine amino acids as peptide body. It has the same molecular mass (1115 Da) with that of polypeptin A and B but the amino acid positions differ.