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ATP synthase catalyzes the synthesis of ATP by consuming the proton electrochemical gradient, which is essential for maintaining the life activity of organisms. The peripheral stalk belongs to ATP synthase and plays an important supporting role in the structure of ATP synthase, but their regulation in filamentous fungi are not yet known. Here, we characterized the subunits of the peripheral stalk, FfATPh, FfATP5, and FfATPb, and explored their functions on development and pathogenicity of Fusarium Fujikuroi. The FfATPh, FfATP5, and FfATPb deletion mutations (∆FfATPh, ∆FfATP5, and ∆FfATPb) presented deficiencies in vegetative growth, sporulation, and pathogenicity. The sensitivity of ∆FfATPh, ∆FfATP5, and ∆FfATPb to fludioxonil, phenamacril, pyraclostrobine, and fluazinam decreased. In addition, ∆FfATPh exhibited decreased sensitivity to ionic stress and osmotic stress, and ∆FfATPb and ∆FfATP5 were more sensitive to oxidative stress. FfATPh, FfATP5, and FfATPb were located on the mitochondria, and ∆FfATPh, ∆FfATPb, and ∆FfATP5 disrupted mitochondrial location. Furthermore, we demonstrated the interaction among FfATPh, FfATP5, and FfATPb by Bimolecular Fluorescent Complimentary (BiFC) analysis. In conclusion, FfATPh, FfATP5, and FfATPb participated in regulating development, pathogenicity, and sensitivity to fungicides and stress factors in F. fujikuroi.

[This corrects the article on p. e70506 in vol. 8.].

Fungicide use is one of the core elements of intensive agriculture because it is necessary to fight pathogens that would otherwise cause large production losses. Oomycete and fungal pathogens are kept under control using several active compounds, some of which are predicted to be banned in the near future owing to serious concerns about their impact on the environment, non-targeted organisms, and human health. To avoid detrimental repercussions for food security, it is essential to develop new biomolecules that control existing and emerging pathogens but are innocuous to human health and the environment. This review presents and discusses the use of novel low-risk biological compounds based on small RNAs and short peptides that are attractive alternatives to current contentious fungicides. Pesticide use is currently a crucial component of intensive agriculture, guaranteeing protection from pathogens which otherwise would threaten the security of the food supply worldwide.The use of pesticides raises major concerns with respect to their impact on the environment and human health. In fact, soil and groundwater contamination represents a major societal issue, especially because of the persistence of highly toxic compounds.New biotechnological solutions need to be explored to discover safe and reliable alternatives to conventional pesticides. In recent years, double-stranded (ds)RNA and short peptide molecules have been shown to efficiently counteract oomycete and fungal infections.Short peptides and dsRNAs have high specificity, are readily degradable and effective in low doses and, in conjunction with novel delivery strategies, are suitable for precision agriculture systems.