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. 2023 Mar 30;14:1156794. doi: 10.3389/fpls.2023.1156794

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Copyright © 2023 Loades, Pérez, Turečková, Tarkowská, Strnad, Seville, Nakabayashi and Leubner-Metzger

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Gibberellin (GA) and abscisic acid (ABA) metabolite profiling during early imbibition of (C) album dimorphic seeds. (A) Temporal hormone metabolite content comparison of bioactive GAs and ABA in seedlots #1 and #2 at 24°C, and AR #1 black seeds at 12°C; Mean ± SEM values are presented. (B) GA biosynthesis pathway metabolite contents after 72h imbibition of dimorphic seeds from seedlots #1 and #2. (C) Molecular structure of bioactive C₁₉-gibberellins GA₄ and GA₁ (left), GA metabolism and enzymes of the 13-non-hydroxylated and the 13-hydroxylated pathways (right). (D) Phaseic acid (PA) and dihydrophaseic acid (DPA) contents in dimorphic seeds of seedlots #1 and #2 in dry (left) and 48h imbibed (right) seeds. (E) ABA biosynthesis and catabolic pathway with key enzymes indicated.