ArticleCurrent genetics2018
Protein O-mannosyltransferases are required for sterigmatocystin production and developmental processes in Aspergillus nidulans.
Article in Current genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 11 citations in OpenAlex.
- Regulators of the Asexual Life Cycle ofCells · 2023Review
- The role of the VosA-repressed dnjA gene in development and metabolism in Aspergillus species.Current genetics · 2020Article
- Identification and Characterization ofCells · 2019Article
- The endocytic cargo adaptor complex is required for cell-wall integrity via interacting with the sensor FgWsc2B in Fusarium graminearum.Current genetics · 2019Article
- MaPmt4, a protein O-mannosyltransferase, contributes to cell wall integrity, stress tolerance and virulence in Metarhizium acridum.Current genetics · 2019Article
- Pleiotropic roles of O-mannosyltransferase MoPmt4 in development and pathogenicity of Magnaporthe oryzae.Current genetics · 2019Article
- Contribution of peroxisomal protein importer AflPex5 to development and pathogenesis in the fungus Aspergillus flavus.Current genetics · 2018Article
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
Abstract
Aspergillus nidulans produces sterigmatocystin (ST), a precursor of a carcinogenic secondary metabolite aflatoxin (AF), during its developmental process. ST biosynthesis has been shown to be affected by various regulatory factors. In this study, we investigated the involvement of O-mannosyltransferases (PmtA, PmtB, PmtC), in ST production and morphological development. Deletion of pmtA (ΔpmtA), pmtB (ΔpmtB) or pmtC (ΔpmtC) caused no spore production and a significant decline of vegetative growth. A tremendous decline of ST level was observed in all Δpmt mutants at the third day after inoculation. By extending the growth period, ST production of ΔpmtA and ΔpmtB increased to the wild-type level 7 days after inoculation. On the other hand, ST was not detected from 7- or 14-day cultures in ΔpmtC. Expression levels of aflR gene, an essential regulator of the ST biosynthesis pathway, were also down-regulated in the Δpmt strains. By introducing the aflR overexpression cassette, ST production in the ΔpmtA and ΔpmtB significantly increased to levels comparable to the wild type. However, the presence of the aflR overexpression cassette could not improve ST production in the ΔpmtC mutant. These data suggest that the PMT family is a new endogenous factor that is required for ST biosynthesis in A. nidulans. These findings provide better understanding of the regulatory mechanisms of AF/ST biosynthesis, which can ultimately contribute to our ability to control aflatoxin contamination.
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