Fig. 4From: Study on the mechanism of efficient extracellular expression of toxic streptomyces phospholipase D in Brevibacillus choshinensis under Mg2+ stressEffects of different conditions on the expression of PLD by B. choshinensis. a Different MgSO4 concentrations. b Different salts. Biomass (open bar), phospholipase D activity (filled bar)Back to article page