Long serial analysis of gene expression for transcriptome profiling during the initiation of ligninolytic enzymes production in Phanerochaete chrysosporium
2007
Minami, Masahiko | Kureha, Orie | Mori, Mari | Kamitsuji, Hisatoshi | Suzuki, Kazumi | Irie, Toshikazu
To analyze the transcriptome profile during the initiation of manganese peroxidase (MnP) and lignin peroxidase (LiP) production in Phanerochaete chrysosporium, we constructed long serial analysis of gene expression (LongSAGE) libraries. A total of 13,666 tags (the number of cumulative counted tags) that included 6,945 unique tags (the number of distinct tags) were isolated from the day-3 culture, which just started the enzymes production and was 24 h after veratryl alcohol addition and oxygen-purge into the culture (day-2 culture). A total of 12,402 tags that included 6,396 unique tags were isolated from the day-2 culture, in which the activity of enzymes is not detected. The comparison of the two libraries suggested that 38 genes showed significant (p ≤ 0.01) fourfold or greater upregulation; this included the MnP gene (mnp2, mnp3) and LiP H8 gene. On the other hand, 43 genes showed significant (p ≤ 0.01) fourfold or greater downregulation. This LongSAGE analysis found many new candidate genes regulating the enzymes production.
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