Based on previous results a few, C sources (glucose sucrose maltose,,,Apple pectin citrus pectin, and malic acid), N, sources (NaNO3(NH4) 2SO4 arginine glutamic acid,,,, peptone and yeast extract and.)PH values (,, 3.0 5.0 7.0 and 8.0) were selected as cultural conditions.For gene expression analysis of the other 14 genes involved in patulin.Biosynthesis in P. Expansum T01. Overall the expression, profiles of.Most of these genes were consistent with patulin production, In particular.Expressions of PatD PatE PatF PatG,,,,,, PatH PatI PatJ PatK PatM,,,PatN and PatO were up-regulated in P. Expansum T01 cultured in.Media, with glucose maltose glutamic acid, and yeast extract as C or N.Sources which permitted, the production of patulin; by contrast these,,Genes were dramatically down-regulated when P. Expansum T01 was.Cultured with unfavorable C or, N sources such as malic acid and ammonium.Sulfate (Fig. 5A B). Similarly, except PatC, and PatH all the, other 12.Genes demonstrated the highest relative expressions at pH 5.0 the optimal,,PH value for patulin production in P. Expansum T01.
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