Wild type F. oxysporum f.sp. lycopersici (Fol) strain 4287 and mutant strains used in this study are listed in Supplementary Table S1. Vegetative growth rate was determined using potato dextrose agar (PDA) and complete medium (CM) at 28°C for 5 days (Li et al., 2019b (link)). Conidiation was assayed as previously reported (Li et al., 2019b (link)). The conidial morphology of wild type and mutants was examined using a Zeiss LSM 710 confocal microscope with a 63/1.2 NA C-Apochromat oil immersion objective (Zeiss, Oberkochen, Germany). Liquid CM was used to grow cultures for extraction of genomic DNA and total RNA.
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