NR2E3 and infection: Notably, the induction of nrdJ expression was much larger than that of nrdA expression (37 and 13 times, respectively, compared with that of the AlgR box mutant promoter counterpart), which demonstrates the key role of the class II RNR gene nrdJ, compared to nrdA, which was not the primary RNR gene activated during the infection of G. mellonella.