Fig. 2

Schematic of the constructed vectors for expressing sRNAs. Detailed sequences were available in Additional file 2: Table S2. a Schematic of the pBA3031-PT (Ori was the replicating element ColE1 essential for replication in E. coli.). b Schematic of the pBA3031-HM. The promoter and terminator for expressing sRNA was the same as the pBA3031-PT