Fig. 6

Transcription level regulation of genes involving CA production in three different A. niger at 40 h. Upregulated, downregulated, and no differentially expressed genes involving CA production are highlighted in red, green, and gray, respectively. Comparative transcriptomic differences of strain YX-1217 versus ATCC 1015 (S1/S3) and strain YX-1217 versus YX-1217G (S1/S2) at 40 h are exhibited, respectively, in squares. PFK 6-phosphofructokinase, GADPH glyceraldehyde-3-phosphate dehydrogenase, PGAM phosphoglycerate mutase, PK pyruvate kinase, ACS acetyl-coA synthetase, ADH alcohol dehydrogenase, ACO aconitase, IDH isocitrate dehydrogenase, SDH succinate dehydrogenase, ACL ATP-citrate lyase, NOX NADH/NADPH oxidase