Fig. 4.

(A) Full-scan MS data of a Trichoderma arundinaceum (strain MSX70741) grown on PDA medium (control). (B) Full-scan MS data of MSX70741 grown on PDA supplemented with a racemic mixture of ortho-F-DL-Phe. (C) Full-scan MS data of MSX70741 grown on PDA supplemented with a racemic mixture of meta-F-DL-Phe. (D) Full-scan MS data of MSX70741 grown on PDA supplemented with a racemic mixture of para-F-DL-Phe. All cultures were sampled in situ using the droplet probe. In panels B and C, the peaks corresponding to the fragment b₇⁺ (m/z 792.4411 and 792.4409 for 4 and 5, respectively), indicating the incorporation of fluorine (¹⁹F), are boxed in red. In all panels, the green indicates ions for 3, whereas red indicates ions that support the incorporation of fluorinated building blocks (i.e. 4 in B and 5 in C). Adapted from Rivera-Chávez et al.⁶⁶