Fig. 2From: Acetoin production from lignocellulosic biomass hydrolysates with a modular metabolic engineering system in Bacillus subtilisA Effect of blocking the formation of spores at different times and knocking out different types of autolysis-related genes on acetoin synthesis. B Trends in biomass of different recombinant strains over time. C and D Transmission electron micrographs (TEM) of the control strain BS-1 and recombinant strain BSMA-1. All assays were performed in triplicate, and the standard deviations of biological replicates are indicated by error barsBack to article page