Fig. 1

Secondary metabolite biosynthetic NRPS genes and their domain distributions in Ab, MAC and MR genomes, as identified by antiSMASH server. A total of 9, 13 and 15 NRPS genes were identified in Ab, MAC and MR genomes. The core module of NRPS contains three domains (A-T-C), A: adenylation domain for initiation, T/PCP: thiolation domain/peptidyl carrier protein for elongation, and C: condensation domain for termination. The hexa-modular structure of NRPS gene (along with nMT in each of the last two A-T-C modules) encodes destruxin synthetase (dtxS1), an insecticidal host-specific gene. This hexa-modular structure of NRPS gene and nMT are only seen in MR highlighted gene, suggesting presence of dtxS1 in MR genome while its absence in Ab and MAC genomes. GenBank accession number of each gene is shown on left side of the gene schematic. The numbers by the end of each gene schematic denote the gene length (amino acids)