Apical hook opening is crucial for seedling establishment and is regulated by unequal distribution of the hormone auxin through unknown mechanisms. In this issue of Developmental Cell, Walia et al.⁴ demonstrate that apical hook opening is an output of tissue-wide forces; auxin and cell wall integrity (CWI) signaling interact to restrict elongation to the concave side of the apical hook.

中文翻译：

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植物幼苗的顶钩开口：揭示生长素和细胞壁的作用


顶钩张开对于幼苗的建立至关重要，并通过未知机制受激素生长素分布不均的调节。在本期 Developmental Cell 中，Walia 等人4 证明顶端钩张开是组织范围力的输出;生长素和细胞壁完整性 （CWI） 信号传导相互作用，限制向顶钩凹侧的伸长。