Table 1 The ACC deaminase activities (concentration of α-ketobutyrate, mM) of the wild strains of endophytic Enterobacter sp. E5 and Kosakonia sp. S1, and their acdS gene surface expressed strain (i.e., the engineered strains E5P and S1P, respectively) with and without disruption of toluene

0.23 ± 0.03^c

5.75 ± 1.16^b

0.38 ± 0.06^c

7.29 ± 0.65^a

0.09 ± 0.02^b

2.37 ± 0.38^a

0.16 ± 0.08^b

2.33 ± 0.35^a