Genome-Wide Insight into Profound Effect of Carbon Catabolite Repressor (Cre1) on the Insect-Pathogenic Lifecycle of <i>Beauveria</i><i>bassiana</i>
Carbon catabolite repression (CCR) is critical for the preferential utilization of glucose derived from environmental carbon sources and regulated by carbon catabolite repressor A (Cre1/CreA) in filamentous fungi. However, a role of Cre1-mediated CCR in insect-pathogenic fungal utilization of host n...
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MDPI AG
2021-10-01
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| Series: | Journal of Fungi |
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| Online Access: | https://www.mdpi.com/2309-608X/7/11/895 |
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| author | Rehab Abdelmonem Mohamed Kang Ren Ya-Ni Mou Sheng-Hua Ying Ming-Guang Feng |
| author_facet | Rehab Abdelmonem Mohamed Kang Ren Ya-Ni Mou Sheng-Hua Ying Ming-Guang Feng |
| author_sort | Rehab Abdelmonem Mohamed |
| collection | DOAJ |
| description | Carbon catabolite repression (CCR) is critical for the preferential utilization of glucose derived from environmental carbon sources and regulated by carbon catabolite repressor A (Cre1/CreA) in filamentous fungi. However, a role of Cre1-mediated CCR in insect-pathogenic fungal utilization of host nutrients during normal cuticle infection (NCI) and hemocoel colonization remains explored insufficiently. Here, we report an indispensability of Cre1 for <i>Beauveria</i><i>bassiana</i>’s utilization of nutrients in insect integument and hemocoel. Deletion of <i>cre1</i> resulted in severe defects in radial growth on various media, hypersensitivity to oxidative stress, abolished pathogenicity via NCI or intrahemocoel injection (cuticle-bypassing infection) but no change in conidial hydrophobicity and adherence to insect cuticle. Markedly reduced biomass accumulation in the Δ<i>cre1</i> cultures was directly causative of severe defect in aerial conidiation and reduced secretion of various cuticle-degrading enzymes. The majority (1117) of 1881 dysregulated genes identified from the Δ<i>cre1</i> versus wild-type cultures were significantly downregulated, leading to substantial repression of many enriched function terms and pathways, particularly those involved in carbon and nitrogen metabolisms, cuticle degradation, antioxidant response, cellular transport and homeostasis, and direct/indirect gene mediation. These findings offer a novel insight into profound effect of Cre1 on the insect-pathogenic lifestyle of <i>B. bassiana</i>. |
| first_indexed | 2024-03-10T05:22:28Z |
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| institution | Directory Open Access Journal |
| issn | 2309-608X |
| language | English |
| last_indexed | 2024-03-10T05:22:28Z |
| publishDate | 2021-10-01 |
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| series | Journal of Fungi |
| spelling | doaj.art-3821e37ea4be4f0a9a49b895fc6a91a42023-11-22T23:55:04ZengMDPI AGJournal of Fungi2309-608X2021-10-0171189510.3390/jof7110895Genome-Wide Insight into Profound Effect of Carbon Catabolite Repressor (Cre1) on the Insect-Pathogenic Lifecycle of <i>Beauveria</i><i>bassiana</i>Rehab Abdelmonem Mohamed0Kang Ren1Ya-Ni Mou2Sheng-Hua Ying3Ming-Guang Feng4MOE Laboratory of Biosystems Homeostasis & Protection, College of Life Sciences, Zhejiang University, Hangzhou 310058, ChinaMOE Laboratory of Biosystems Homeostasis & Protection, College of Life Sciences, Zhejiang University, Hangzhou 310058, ChinaMOE Laboratory of Biosystems Homeostasis & Protection, College of Life Sciences, Zhejiang University, Hangzhou 310058, ChinaMOE Laboratory of Biosystems Homeostasis & Protection, College of Life Sciences, Zhejiang University, Hangzhou 310058, ChinaMOE Laboratory of Biosystems Homeostasis & Protection, College of Life Sciences, Zhejiang University, Hangzhou 310058, ChinaCarbon catabolite repression (CCR) is critical for the preferential utilization of glucose derived from environmental carbon sources and regulated by carbon catabolite repressor A (Cre1/CreA) in filamentous fungi. However, a role of Cre1-mediated CCR in insect-pathogenic fungal utilization of host nutrients during normal cuticle infection (NCI) and hemocoel colonization remains explored insufficiently. Here, we report an indispensability of Cre1 for <i>Beauveria</i><i>bassiana</i>’s utilization of nutrients in insect integument and hemocoel. Deletion of <i>cre1</i> resulted in severe defects in radial growth on various media, hypersensitivity to oxidative stress, abolished pathogenicity via NCI or intrahemocoel injection (cuticle-bypassing infection) but no change in conidial hydrophobicity and adherence to insect cuticle. Markedly reduced biomass accumulation in the Δ<i>cre1</i> cultures was directly causative of severe defect in aerial conidiation and reduced secretion of various cuticle-degrading enzymes. The majority (1117) of 1881 dysregulated genes identified from the Δ<i>cre1</i> versus wild-type cultures were significantly downregulated, leading to substantial repression of many enriched function terms and pathways, particularly those involved in carbon and nitrogen metabolisms, cuticle degradation, antioxidant response, cellular transport and homeostasis, and direct/indirect gene mediation. These findings offer a novel insight into profound effect of Cre1 on the insect-pathogenic lifestyle of <i>B. bassiana</i>.https://www.mdpi.com/2309-608X/7/11/895entomopathogenic fungicarbon catabolite repressiongene expression and regulationhost infectionvirulencebiological control |
| spellingShingle | Rehab Abdelmonem Mohamed Kang Ren Ya-Ni Mou Sheng-Hua Ying Ming-Guang Feng Genome-Wide Insight into Profound Effect of Carbon Catabolite Repressor (Cre1) on the Insect-Pathogenic Lifecycle of <i>Beauveria</i><i>bassiana</i> Journal of Fungi entomopathogenic fungi carbon catabolite repression gene expression and regulation host infection virulence biological control |
| title | Genome-Wide Insight into Profound Effect of Carbon Catabolite Repressor (Cre1) on the Insect-Pathogenic Lifecycle of <i>Beauveria</i><i>bassiana</i> |
| title_full | Genome-Wide Insight into Profound Effect of Carbon Catabolite Repressor (Cre1) on the Insect-Pathogenic Lifecycle of <i>Beauveria</i><i>bassiana</i> |
| title_fullStr | Genome-Wide Insight into Profound Effect of Carbon Catabolite Repressor (Cre1) on the Insect-Pathogenic Lifecycle of <i>Beauveria</i><i>bassiana</i> |
| title_full_unstemmed | Genome-Wide Insight into Profound Effect of Carbon Catabolite Repressor (Cre1) on the Insect-Pathogenic Lifecycle of <i>Beauveria</i><i>bassiana</i> |
| title_short | Genome-Wide Insight into Profound Effect of Carbon Catabolite Repressor (Cre1) on the Insect-Pathogenic Lifecycle of <i>Beauveria</i><i>bassiana</i> |
| title_sort | genome wide insight into profound effect of carbon catabolite repressor cre1 on the insect pathogenic lifecycle of i beauveria i i bassiana i |
| topic | entomopathogenic fungi carbon catabolite repression gene expression and regulation host infection virulence biological control |
| url | https://www.mdpi.com/2309-608X/7/11/895 |
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