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Analysis of expressed sequence tags (ESTs) from Lentinula edodes


The 1,031 expressed sequence tags (ESTs) from the basidiomycete Lentinula edodes were generated as a pilot experiment to see distribution of genes expressed in L. edodes. Among them, genes for hydrophobin, which are specifically found in filamentous fungi, were the most frequently obtained ESTs (33 times), suggesting that they are highly expressed in L. edodes. In addition to known hydrophobin 1 and 2 types, our analysis revealed the existence of novel types of hydrophobin, which we named hydrophobin 3, 4, and 5. The second and the third most highly obtained ESTs were phosphatidylserine decarboxylase and formate dehydrogenase, which were obtained eight and seven times, respectively. It should be noted that two important genes (argonaute and RNA-dependent RNA polymerase) involved in the RNAi pathway were found, suggesting a future application for gene knock-down by RNA interference. The 53 ESTs were identical with the sequences already reported in L. edodes. The 433 ESTs were found to show significant sequence similarity (E value <1 × 10−5) with the proteins reported (or predicted) in other species. In total, 387,952bp were sequenced and registered in DDBJ/GenBank (accession number BJ998097–BJ999127).

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This study was supported by a grant-in-aid from Hokuto Corp. We would like to thank K. Yagi and D. Yano for technical assistance.

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Correspondence to Makoto Kawamukai.

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Suizu, T., Zhou, G., Oowatari, Y. et al. Analysis of expressed sequence tags (ESTs) from Lentinula edodes . Appl Microbiol Biotechnol 79, 461–470 (2008).

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  • Lentinula edodes
  • cDNA
  • EST