In this study we presented data on the production of branched root hairs in the seedlings of A. thaliana under progressive water deficit. The overall production of branched hairs was quite high under stress conditions and amounted to 8,27 %. On the contrary, this form of root hairs was almost absent in the control group (0,27 %). The highest number of branched hairs was produced at the beginning of the stress action. Branched root hairs are quite uniform structures in the sense of their morphology. To solve the question how the branched hairs grow, the structure of actin cytoskeleton was explored. This structure was different in the root hair and in its branch, which is an indication that the hair stops its growth at the moment when the branching starts. We have also characterized the production of branched root hairs in hormonal mutants of Arabidopsis and found the involvement of auxin in this process.
在本研究中，我们展示了拟南芥幼苗在渐进性水分亏缺条件下产生分支根毛的数据。在胁迫条件下，分支根毛的总体产生量相当高，达8.27%。相反，对照组中几乎不存在这种形式的根毛（0.27%）。在胁迫作用开始时产生的分支根毛数量最多。从形态学角度来看，分支根毛结构相当一致。为了解决分支根毛如何生长的问题，我们探究了肌动蛋白细胞骨架的结构。根毛及其分支中的这种结构有所不同，这表明根毛在分支开始时停止生长。我们还对拟南芥激素突变体中分支根毛的产生进行了表征，并发现生长素参与了这一过程。
