Fig. 1

Evaluation of the growth stability of the strains. WT: wild-type strain; SCF-R0: strain screened by adaptive laboratory evolution; SCF-R1: mutant strain obtained by the first round of radiation plus furfural domestication; SCF-R2: mutant strain obtained by the second round of radiation and furfural domestication; SCF-R3: mutant strain obtained by the third round of radiation plus furfural domestication; SCF-R4: mutant strain obtained by the fourth round of radiation plus furfural domestication. The results shown are the average of the three experiments