The Fungal-Specific Transcription Factor VpFSTF1 Is Required for Virulence in Valsa pyri
Valsa pyri is the causal agent of pear canker disease, which leads to enormous losses of pear production in eastern Asian, especially China. In this study, we identified a fungal-specific transcription factor 1 (termed as VpFSTF1) from V. pyri, which is highly conserved in fungi. To characterize its...
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Frontiers Media S.A.
2020-01-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fmicb.2019.02945/full |
| _version_ | 1818109740926894080 |
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| author | Alex Machio Kange Ai Xia Jierui Si Bingxin Li Xiong Zhang Gan Ai Feng He Feng He Daolong Dou |
| author_facet | Alex Machio Kange Ai Xia Jierui Si Bingxin Li Xiong Zhang Gan Ai Feng He Feng He Daolong Dou |
| author_sort | Alex Machio Kange |
| collection | DOAJ |
| description | Valsa pyri is the causal agent of pear canker disease, which leads to enormous losses of pear production in eastern Asian, especially China. In this study, we identified a fungal-specific transcription factor 1 (termed as VpFSTF1) from V. pyri, which is highly conserved in fungi. To characterize its functions, we generated mutant and complementation strains in V. pyri and found that ΔVpFSTF1 mutants lost the ability to form fruiting bodies along with the reduced virulence. The radial growth of ΔVpFSTF1 mutant was sensitive to increasing concentrations of hydrogen peroxide (H2O2) and salicylic acid (SA). Moreover, RNA-sequencing (RNA-Seq) analysis of wild-type (WT) and ΔVpFSTF1 mutant strains was performed, and the results revealed 1,993 upregulated, and 2006 downregulated differentially expressed genes (DEGs) in the mutant. The DEGs were corresponding to the genes that are involved in amino acid metabolism, starch, and sucrose metabolism, gluconeogenesis, citrate cycle, and carbon metabolism. Interestingly, pathogen host interaction (PHI) analysis showed that 69 downregulated genes were related to virulence, suggesting that they might function downstream of VpFSTF1. Nine DEGs were further validated by quantitative reverse transcription-polymerase chain reaction (qRT-PCR), and the results were consistent with RNA-seq analysis. Furthermore, promoter regions were predicted, and VpFSTF1 binding activity was assessed. We demonstrated that five promoters are directly or indirectly targeted by VpFSTF1, including catalase-related peroxidase (VPIG_01209) and P450 family genes. Taken together, these findings indicate that VpFSTF1 is crucial for the virulence of V. pyri via direct or indirect regulation of downstream genes expression and lay an important foundation for understanding the molecular mechanism of V. pyri infection. |
| first_indexed | 2024-12-11T02:36:04Z |
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| language | English |
| last_indexed | 2024-12-11T02:36:04Z |
| publishDate | 2020-01-01 |
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| series | Frontiers in Microbiology |
| spelling | doaj.art-b8b04a8e52f349afa66220d0807b44012022-12-22T01:23:44ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2020-01-011010.3389/fmicb.2019.02945496770The Fungal-Specific Transcription Factor VpFSTF1 Is Required for Virulence in Valsa pyriAlex Machio Kange0Ai Xia1Jierui Si2Bingxin Li3Xiong Zhang4Gan Ai5Feng He6Feng He7Daolong Dou8Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, ChinaDepartment of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, ChinaDepartment of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, ChinaDepartment of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, ChinaDepartment of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, ChinaDepartment of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, ChinaDepartment of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, ChinaSchool of Life Sciences, Anhui Normal University, Wuhu, ChinaDepartment of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, ChinaValsa pyri is the causal agent of pear canker disease, which leads to enormous losses of pear production in eastern Asian, especially China. In this study, we identified a fungal-specific transcription factor 1 (termed as VpFSTF1) from V. pyri, which is highly conserved in fungi. To characterize its functions, we generated mutant and complementation strains in V. pyri and found that ΔVpFSTF1 mutants lost the ability to form fruiting bodies along with the reduced virulence. The radial growth of ΔVpFSTF1 mutant was sensitive to increasing concentrations of hydrogen peroxide (H2O2) and salicylic acid (SA). Moreover, RNA-sequencing (RNA-Seq) analysis of wild-type (WT) and ΔVpFSTF1 mutant strains was performed, and the results revealed 1,993 upregulated, and 2006 downregulated differentially expressed genes (DEGs) in the mutant. The DEGs were corresponding to the genes that are involved in amino acid metabolism, starch, and sucrose metabolism, gluconeogenesis, citrate cycle, and carbon metabolism. Interestingly, pathogen host interaction (PHI) analysis showed that 69 downregulated genes were related to virulence, suggesting that they might function downstream of VpFSTF1. Nine DEGs were further validated by quantitative reverse transcription-polymerase chain reaction (qRT-PCR), and the results were consistent with RNA-seq analysis. Furthermore, promoter regions were predicted, and VpFSTF1 binding activity was assessed. We demonstrated that five promoters are directly or indirectly targeted by VpFSTF1, including catalase-related peroxidase (VPIG_01209) and P450 family genes. Taken together, these findings indicate that VpFSTF1 is crucial for the virulence of V. pyri via direct or indirect regulation of downstream genes expression and lay an important foundation for understanding the molecular mechanism of V. pyri infection.https://www.frontiersin.org/article/10.3389/fmicb.2019.02945/fullfungal-specific transcription factorValsa pyrivirulenceRNA-seqdifferentially expressed genes |
| spellingShingle | Alex Machio Kange Ai Xia Jierui Si Bingxin Li Xiong Zhang Gan Ai Feng He Feng He Daolong Dou The Fungal-Specific Transcription Factor VpFSTF1 Is Required for Virulence in Valsa pyri Frontiers in Microbiology fungal-specific transcription factor Valsa pyri virulence RNA-seq differentially expressed genes |
| title | The Fungal-Specific Transcription Factor VpFSTF1 Is Required for Virulence in Valsa pyri |
| title_full | The Fungal-Specific Transcription Factor VpFSTF1 Is Required for Virulence in Valsa pyri |
| title_fullStr | The Fungal-Specific Transcription Factor VpFSTF1 Is Required for Virulence in Valsa pyri |
| title_full_unstemmed | The Fungal-Specific Transcription Factor VpFSTF1 Is Required for Virulence in Valsa pyri |
| title_short | The Fungal-Specific Transcription Factor VpFSTF1 Is Required for Virulence in Valsa pyri |
| title_sort | fungal specific transcription factor vpfstf1 is required for virulence in valsa pyri |
| topic | fungal-specific transcription factor Valsa pyri virulence RNA-seq differentially expressed genes |
| url | https://www.frontiersin.org/article/10.3389/fmicb.2019.02945/full |
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