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Pyrenophoric acid B (P-Acid B) uses the ABA biosynthesis pathway to inhibit seed germination. (A) Pictures of Arabidopsis seeds treated with 1 μM ABA, 100 μM P-Acid B, or DMSO as control, 3 d after being sown. Col-0 was used along with mutants in the ABA biosynthesis pathway. (B) Quantification of seedling establishment 3 d after seeds were sown on DMSO, 1 μM ABA, or 100 μM P-Acid B. Values represent means ±SD of 90 seed used in three different experiments.
