Penicillium rubrum

A requirement for A -sterols seems to be satisfied in different species by different methods. Whereas starfish reduce the A -double bond of cholesterol before introducing the A -double bond/ in Paramecium aurelia cholesterol (A ) is converted into 7-dehydrocholesterol In Penicillium rubrum ergosterol... 

Strains of the fungus Penicillium rubrum growing on maize produce the rubratoxins A (6.27) and B, which were toxic to animals eating this maize. These compounds were subsequently detected as metabolites of P. purpurogenum. Their structures represent more highly oxidized forms of the nonadrides. 

He initially thought that the mould was a potent strain of Penicillium rubrum, although it was subsequently shown to be Penicillium notatum. He screened a number of other Penicillium moulds from contaminated foodstuffs, old books, paintings, etc., but none except one provided by the hospital mycologist had the potency of the first mould. This confirmed his suspicion that he was dealing with a very unusual strain. 

Monascus ruber Monascus ruber Penicillium rubrum Talaromyces udagawae Penicillium rubrum Penicillium wortmannii Penicillium vermiculatum Penicillium funiculosum Penicillium vermiculatum Talaromyces tardifaciens Penicillium wortmannii Aspergillus ustus... 

Mitorubrin. An azaphilone pigment, the (/ )-(- )-form of which has been isolated from Penicillium rubrum and P funiculosum where it occurs together with mi-toruhrinol, mitorubrinic acid, and mitorubrinic acid B. 

Domer JW, ColeRJ, Hill R, Wicklow D, Cox RH (1980) Penicillium rubrum and Penicillium biforme. New Sources of Rugulovasines A and B. Appl Environ Microbiol 40 685... 

Penicillium rubrum with [l,2- C Jacetate and [2,3- C Jsuccinate have... 

Fusarium graminearum Rhizoctonia leguminicola Pithomyces chartarum Penicillium rubrum Penicillium expansum Penicillium citrinum Penicillium cyclopium... 

Rubratoxin B is one of at least two toxins produced by certain strains of Penicillium rubrum isolated from feeds. The biological activity of both the rubratoxins and P, rubrum have been extensively reviewed (Moss, 1971 Newberne, 1974 Hayes, 1977). Rubratoxin B was shown by Moss et al. (1968) to be a bisanhydride (31) rubratoxin A was shown to possess essentially the same structure, with one of the anhydride groups reduced to the lactol (32) (Moss et ai, 1969). 

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