Fig. 1

Changes of fatty acid types in engineered strains with the different expression levels of thioesterases. A, changes in titers of different fatty acid types of engineered C. glutamicum. B, concentric circle diagram reflecting the changes in the percentage of unsaturated and saturated fatty acids in engineered C. glutamicum. C, changes in titers of different fatty acid types of engineered E. coli. D, concentric circle diagram reflecting the changes in the percentage of unsaturated and saturated fatty acids in engineered E. coli. (SCFA short-chain fatty acid, MCFA medium-chain fatty acid; LCFA long-chain fatty acid, VLCFA very long-chain fatty acid, OCFA odd-chain fatty acid, TFA total fatty acid, SFA saturated fatty acid, UFA unsaturated fatty acid; WG wild-type C. glutamicum; CGtesA, CGtesB, and CGte9: C. glutamicum with overexpression of tesA, tesB, and te9, respectively; CGΔtesA, CGΔtesB, and CGΔte9: C. glutamicum with tesA, tesB, and te9 knocked out, respectively; WEC: wild-type E. coli; ECtesA, ECtesB, and ECte9: E. coli with overexpression of tesA, tesB, and te9). Different letters for the same fatty acid type indicated significant differences (P < 0.05; n = 3). Data without marked letters indicated a nonsignificant difference (ns)