Chemical ecogenomics-guided discovery of phytotoxic α-pyrones from the fungal wheat pathogen Parastagonospora nodorum

Hang Li, Jinyu Hu, Haochen Wei, Peter S. Solomon, Daniel Vuong, Ernest Lacey, Keith A. Stubbs, Andrew M. Piggott, Yit Heng Chooi*

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Citations (Scopus)


A biosynthetic gene cluster that is significantly upregulated in the fungal wheat pathogen Parastagonospora nodorum during plant infection was reconstructed heterologously in Aspergillus nidulans. This led to the discovery of five new α-pyrone polyketides, alternapyrones B-F (2-6). Compounds 5 and 6, which contain a highly substituted dihydrofuran, exhibited phytotoxicity on wheat seed germination. It is demonstrated that only three enzymes, one highly reducing polyketide synthase and two multifunctional P450 oxygenases, are needed to synthesize the structurally complex products.

Original languageEnglish
Pages (from-to)6148–6152
Number of pages5
JournalOrganic Letters
Issue number19
Publication statusPublished - 5 Oct 2018


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