Hasan H A, Issa A A
Botany Department, Faculty of Science, Assiut University, Egypt.
Folia Microbiol (Praha). 1993;38(6):456-8. doi: 10.1007/BF02814395.
The selective effect of various levels of phosphate and nitrate (as fertilizers) on biosynthesis of aflatoxin by Aspergillus parasiticus var. globosus, and citrinin by A. terreus var. aureus was studied in defined culture medium. Phosphate at 35-175 mmol per 50 mL decreased aflatoxin production, but increased citrinin synthesis. Nitrate at 73-365 mmol per 50 mL stimulated the synthesis of aflatoxin but depressed that of citrinin. A rise in the levels of nitrate and phosphate led to a decrease in aflatoxin production, an increase in citrinin production and an accumulation of mycelial phosphate and nitrate contents.
在特定培养基中研究了不同水平的磷酸盐和硝酸盐（作为肥料）对寄生曲霉球状变种产生黄曲霉毒素以及土曲霉金黄变种产生桔霉素的生物合成的选择性影响。每50毫升含35 - 175毫摩尔的磷酸盐会降低黄曲霉毒素的产量，但会增加桔霉素的合成。每50毫升含73 - 365毫摩尔的硝酸盐会刺激黄曲霉毒素的合成，但会抑制桔霉素的合成。硝酸盐和磷酸盐水平的升高导致黄曲霉毒素产量下降、桔霉素产量增加以及菌丝体中磷酸盐和硝酸盐含量的积累。
