Transcriptional regulation of genes on the non-syntenic blocks of Aspergillus oryzae and its functional relationship to solid-state cultivation.

Koichi Tamano, Motoaki Sano, Noriko Yamane, Yasunobu Terabayashi, Tomomi Toda, Misao Sunagawa, Hideaki Koike, Osamu Hatamoto, Genryou Umitsuki, Tadashi Takahashi, Yasuji Koyama, Ryoichi Asai, Keietsu Abe, Masayuki Machida

    Research output: Contribution to journalArticlepeer-review

    41 Citations (Scopus)

    Abstract

    Transcriptome analysis revealed close relationship between solid-state cultivation and the transcriptional regulation of the genes on the non-syntenic blocks (NSBs), which were characterized by the comparison of Aspergillus oryzae genome with those of Aspergillus fumigatus and Aspergillus nidulans. Average expression ratio of the genes on NSBs in solid-state cultivation was significantly higher than that on the syntenic blocks (SBs). Of the induced genes, the genes relating to metabolism, which are highly enriched on NSBs, most contributed to the NSB-specific induction. The analysis using the SB- and NSB-genes that had sequence similarity between the two blocks significantly decreased the difference of average expression ratios between the two blocks. In spite of remarkably high averaged expression ratio of the NSB genes encoding extracellular enzymes, no induction of PKS and NRPS genes on NSBs were observed in solid-state cultivations. These results strongly suggest that the genes on NSBs play an important role on solid-state fermentation.

    Original languageEnglish
    Pages (from-to)139-151
    Number of pages13
    JournalFungal genetics and biology : FG & B
    Volume45
    Issue number2
    DOIs
    Publication statusPublished - 2008 Feb

    ASJC Scopus subject areas

    • Microbiology
    • Genetics

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