RRC ID 19090
Author Arai T, Umemura S, Ota T, Ogihara J, Kato J, Kasumi T.
Title Effects of inorganic nitrogen sources on the production of PP-V [(10Z)-12-carboxyl-monascorubramine] and the Expression of the nitrate assimilation gene cluster by Penicillium sp. AZ.
Journal Biosci Biotechnol Biochem
Abstract A fungal strain, Penicillium sp. AZ, produced the azaphilone Monascus pigment homolog when cultured in a medium composed of soluble starch, ammonium nitrate, yeast extract, and citrate buffer, pH 5.0. One of the typical features of violet pigment PP-V [(10Z)-12-carboxyl-monascorubramine] is that pyranoid oxygen is replaced with nitrogen. In this study, we found that ammonia and nitrate nitrogen are available for PP-V biosynthesis, and that ammonia nitrogen was much more effective than nitrate nitrogen. Further, we isolated nitrate assimilation gene cluster, niaD, niiA, and crnA, and analyzed the expression of these genes. The expression levels of all these genes increased with sodium nitrate addition to the culture medium. The results obtained here strongly suggest that Penicillium sp. AZ produced PP-V using nitrate in the form of ammonium reduced from nitrate through a bioprocess assimilatory reaction.
Volume 76(1)
Pages 120-4
Published 2012-1-1
DOI 10.1271/bbb.110589
PII JST.JSTAGE/bbb/110589
PMID 22232256
MeSH 4-Butyrolactone / analogs & derivatives* 4-Butyrolactone / biosynthesis Gene Expression Regulation, Fungal* Isoquinolines Multigene Family / genetics* Nitrates / metabolism* Nitrogen / metabolism* Oxidation-Reduction Penicillium / genetics* Penicillium / metabolism*
IF 1.516
Times Cited 9
WOS Category FOOD SCIENCE & TECHNOLOGY BIOTECHNOLOGY & APPLIED MICROBIOLOGY CHEMISTRY, APPLIED BIOCHEMISTRY & MOLECULAR BIOLOGY
Resource
General Microbes JCM 23216