FIGURE 1.

The biosynthetic gene cluster of siderophore and transcriptional analysis of genes related to secondary metabolites under iron deficiency conditions. (A) Gene clusters and putative assignments which increased expression at transcriptional level occurred in iron deficiency; (B) RT-PCR results of gene expression in the conditions of iron-containing and iron-deficient, the expression levels of actin and gDNA were used as control; (C) HPLC traces of M. robertsii in the condition of iron-containing and iron-deficient, UV absorption was monitored at 210 nm. 10^4/mL conidia of M. robertsii were point inoculated on AMM medium and AMM-Fe medium and incubated for 10 days at 25°C on a rotary shaker at 150 rpm.