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Sousa TF, de Araújo Júnior MB, Peres EG, Souza MP, da Silva FMA, de Medeiros LS, de Souza ADL, de Souza AQL, Yamagishi MEB, da Silva GF, Koolen HHF, De Queiroz MV. Discovery of dual PKS involved in sclerotiorin biosynthesis in Penicillium meliponae using genome mining and gene knockout. Arch Microbiol 2023; 205:75. [PMID: 36708387 DOI: 10.1007/s00203-023-03414-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 01/29/2023]
Abstract
Fungi of the genus Penicillium section Sclerotiora have as their main characteristic the presence of orange-pigmented mycelium, which is associated with sclerotiorin, a chlorinated secondary metabolite of the azaphilone subclass of polyketides. Sclerotiorin presents anti-diabetes, antioxidant, anti-inflammatory, anti-Alzheimer, antiviral, and antimicrobial activities, which has always attracted the attention of researchers worldwide. During our ongoing search for azaphilone-producing Amazonian fungi, the strain of Penicillium MMSRG-058 was isolated as an endophyte from the roots of Duguetia stelechantha and showed great capacity for producing sclerotiorin-like metabolites. Using multilocus phylogeny, this strain was identified as Penicillium meliponae. Moreover, based on the genome mining of this strain through the reverse approach, a cluster of putative biosynthetic genes (BGC) responsible for the biosynthesis of sclerotiorin-like metabolites (scl cluster) was identified. The knockout of the sclA (highly reducing PKS) and sclI (non-reducing PKS) genes resulted in mutants with loss of mycelial pigmentation and terminated the biosynthesis of sclerotiorin-like metabolites: geumsanol B, chlorogeumsanol B, 7-deacetylisochromophilone VI, isochromophilone VI, ochrephilone, isorotiorin, and sclerotiorin. Based on these results, a biosynthetic pathway was proposed considering the homology of BGC scl genes with the azaphilone BGCs that have already been functionally characterized.
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Affiliation(s)
- Thiago F Sousa
- Grupo de Pesquisas em Metabolômica e Espectrometria de Massas, Universidade do Estado do Amazonas, Manaus, 690065-130, Brazil.,Embrapa Amazônia Ocidental, Manaus, 69010-970, Brazil.,Laboratório de Genética Molecular e de Microrganismos, Universidade Federal de Viçosa, Viçosa, 36570-900, Brazil
| | - Moysés B de Araújo Júnior
- Grupo de Pesquisas em Metabolômica e Espectrometria de Massas, Universidade do Estado do Amazonas, Manaus, 690065-130, Brazil.,Instituto de Ciências Exatas e Tecnologia, Universidade Federal do Amazonas, Itacoatiara, 69103-128, Brazil
| | - Eldrinei G Peres
- Grupo de Pesquisas em Metabolômica e Espectrometria de Massas, Universidade do Estado do Amazonas, Manaus, 690065-130, Brazil.,Departamento de Química, Universidade Federal do Amazonas, Manaus, 69067-005, Brazil
| | - Mayane P Souza
- Departamento de Química, Universidade Federal do Amazonas, Manaus, 69067-005, Brazil
| | - Felipe M A da Silva
- Departamento de Química, Universidade Federal do Amazonas, Manaus, 69067-005, Brazil
| | - Lívia S de Medeiros
- Instituto de Ciências Ambientais Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, 09972-270, Brazil
| | - Afonso D L de Souza
- Departamento de Química, Universidade Federal do Amazonas, Manaus, 69067-005, Brazil
| | - Antonia Q L de Souza
- Faculdade de Ciências Agrárias, Universidade Federal do Amazonas, Manaus, 69067-005, Brazil
| | | | | | - Hector H F Koolen
- Grupo de Pesquisas em Metabolômica e Espectrometria de Massas, Universidade do Estado do Amazonas, Manaus, 690065-130, Brazil
| | - Marisa V De Queiroz
- Laboratório de Genética Molecular e de Microrganismos, Universidade Federal de Viçosa, Viçosa, 36570-900, Brazil.
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Ishiuchi K, Nagumo A, Kawaguchi M, Furuyashiki H, Nakagawa H, Hirose D. Stereochemistries of Mariannamides C and D, Two Lipohexapeptides, Isolated from Mariannaea elegans NBRC102301. HETEROCYCLES 2022. [DOI: 10.3987/com-22-14728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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