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Comparative Transcriptomics of the Entomopathogenic Fungus Beauveria bassiana Grown on Aerial Surface and in Liquid Environment

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Abstract

Beauveria bassiana, the causative agent of arthropod, proliferates in the host hemolymph (liquid environment) and shits to saprotrophic growth on the host cadaver (aerial surface). In this study, we used transcriptomic analysis to compare the gene expression modes between these two growth phases. Of 10,366 total predicted genes in B. bassiana, 10,026 and 9985 genes were expressed in aerial (AM) and submerged (SM) mycelia, respectively, with 9853 genes overlapped. Comparative analysis between two transcriptomes indicated that there were 1041 up-regulated genes in AM library when compared with SM library, and 1995 genes were down-regulated, in particular, there were 7085 genes without significant change in expression between two transcriptomes. Furthermore, of 25 amidase genes (AMD), BbAMD5 has high expression level in both transcriptomes, and its protein product was associated with cell wall in aerial and submerged mycelia. Disruption of BbAMD5 significantly reduced mycelial hydrophobicity, hydrophobin translocation, and conidiation on aerial plate. Functional analysis also indicated that BbAmd5 was involved in B. bassiana blastospore formation in broth, but dispensable for fungal virulence. This study revealed the high similarity in global expression mode between mycelia grown under two cultivation conditions.

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Funding

This study was supported by National Natural Science Foundation of China (32170027).

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Authors and Affiliations

  1. Institute of Microbiology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China

    Kang Wei, **-Li Ding, Ming-Guang Feng & Sheng-Hua Ying

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  1. Kang Wei
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  2. **-Li Ding
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  3. Ming-Guang Feng
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  4. Sheng-Hua Ying
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Contributions

KW wrote the original manuscript. KW and JD performed the experiments. MF and SY reviewed and edited the manuscript. SY acquired the funding and supervised the study. All authors read and approved the final manuscript.

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Correspondence to Sheng-Hua Ying.

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Wei, K., Ding, JL., Feng, MG. et al. Comparative Transcriptomics of the Entomopathogenic Fungus Beauveria bassiana Grown on Aerial Surface and in Liquid Environment. Curr Microbiol 81, 249 (2024). https://doi.org/10.1007/s00284-024-03783-w

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