SRP235367 PRJNA594492 Weak Acid Resistance A (WarA), a novel transcription factor required for regulation of weak-acid resistance in Aspergillus niger Comparison of the transcriptomes of WT and warA deletion strain conidia. Conidia were germinated either in control conditions, or in the presence of 1mM sorbic acid. This comparison was performed to discover genes regulated by the WarA transcription factor in Aspergillus niger.