Weijers Dolf, Jürgens Gerd
Centre for Plant Molecular Biology (ZMBP), Developmental Genetics, Tübingen University, Auf der Morgenstelle 3, D-72076 Tübingen, Germany.
Curr Opin Plant Biol. 2005 Feb;8(1):32-7. doi: 10.1016/j.pbi.2004.11.001.
The major axis of polarity of the plant embryo serves as a reference for the formation of meristems and, thus, for all subsequent development. Mechanisms underlying the establishment of the embryo axis itself have remained elusive. This is now changing with recent reports documenting a role for auxin in embryo axis formation. Auxin accumulates dynamically at specific positions that correlate with developmental decisions in early embryogenesis, and this ties developmental decisions to both transport regulators and components of the response machinery. A major challenge for the future is to determine how auxin-dependent processes interact with other as yet unknown factors to mediate differential gene expression patterns in early embryogenesis.
植物胚胎极性的主轴是分生组织形成的参考依据，因此也是所有后续发育的参考依据。胚胎轴自身建立的潜在机制一直难以捉摸。随着最近有报道证明生长素在胚胎轴形成中发挥作用，这种情况正在发生变化。生长素在特定位置动态积累，这些位置与早期胚胎发生中的发育决定相关，这将发育决定与运输调节因子和反应机制的组成部分联系起来。未来的一个主要挑战是确定生长素依赖过程如何与其他未知因素相互作用，以介导早期胚胎发生中的差异基因表达模式。
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