Negative regulation on PCA production is not correlated with positive regulation on BHL and HHL synthesis by gacA in Pse假单胞菌株M18gacA基因对BHL和HHL合成正调控及对PCA合成负调控无相关性
Positive Regulation of Avermectin Biosynthesis by AveR in Streptomyces avermitilis阿维链霉菌中转录因子AveR对阿维菌素生物合成的正调节