pfdgw1 mutants are sensitized to notochord distortion after partial knockdown of loxl5b. A-D: Embryos from pfdgw1/+ intercrosses were injected with 5 ng of control MO (A,B) or 5 ng loxl5b MO (C,D) and examined at 30 hours postfertilization (hpf). Neither morpholino induced notochord distortion in wild-type embryos (A,C). However, pfdgw1 mutants injected with lysyl oxidase morpholino developed striking notochord distortion (D, arrowheads) compared with mutants injected with control morpholino (B, arrowheads). E: Wild-type embryo incubated in high-dose (6 μM) neocuproine, demonstrating classic sine-wave appearance of lysyl oxidase inhibition at 30 hpf. F: pfdgw1 mutant at 30 hpf with irregular notochord distortion after incubation in 6 μM neocuproine. Embryos were treated with PTU to inhibit melanin pigmentation.
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