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Gene transcription profiling of Aspergillus oryzae 3.042 treated with ergosterol biosynthesis inhibitors

  • Biotechnology and Industrial Microbiology - Research Paper
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Abstract

Ergosterol, a unique component of fungal cells, is not only important for fungal growth and stress responses but also holds great economic value. Limited studies have been performed on ergosterol biosynthesis in Aspergillus oryzae, a safe filamentous fungus that has been used for the manufacture of oriental fermented foods. This study revealed that the ergosterol biosynthesis pathway is conserved between Saccharomyces cerevisiae and A. oryzae 3.042 by treatment with ergosterol biosynthesis inhibitors and bioinformatics analysis. However, the ergosterol biosynthesis pathway in A. oryzae 3.042 is more complicated than that in S. cerevisiae as there are multiple paralogs encoding the same biosynthetic enzymes. Using RNA-seq, this study identified 138 and 104 differentially expressed genes (DEG) in response to the ergosterol biosynthesis inhibitors tebuconazole and terbinafine, respectively. The results showed that the most common DEGs were transport- and metabolism-related genes. There were only 17 DEGs regulated by both tebuconazole and terbinafine treatments and there were 256 DEGs between tebuconazole and terbinafine treatments. These results provide new information on A. oryzae ergosterol biosynthesis and regulation mechanisms, which may lay the foundation for genetic modification of the ergosterol biosynthesis pathway in A. oryzae.

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Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (NSFC) (Grant nos. 31700068 and 31460447), International S&T Cooperation Project of Jiangxi Provincial (Grant no. 20142BDH80003), General Science and Technology Project of Nanchang City (Grant no. 3000035402), “555 Talent Project” of Jiangxi Province, Natural Science Foundation of Jiangxi Province (Grant nos. 20181BAB214001 and 20171BAB214004), and the Open Foundation of Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization (Grant no. EWPL201705).

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Correspondence to Bin Zeng.

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Hu, Z., Li, G., Sun, Y. et al. Gene transcription profiling of Aspergillus oryzae 3.042 treated with ergosterol biosynthesis inhibitors. Braz J Microbiol 50, 43–52 (2019). https://doi.org/10.1007/s42770-018-0026-1

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  • DOI: https://doi.org/10.1007/s42770-018-0026-1

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