Root hair growth dramatically expands the root surface area, thus facilitating water and nutrient uptake. Until recently, the molecular mechanism underlying root hair growth was unknown. Recent studies have revealed that the transcription factor ROOT HAIR DEFECTIVE 6 LIKE 4 (RSL4) coordinates hormonal, environmental, and developmental factors to trigger polar growth.

中文翻译：

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RSL4负责控制：多个信号，一个转录因子

根毛的生长显着扩大了根的表面积，从而促进了水分和养分的吸收。直到最近，根发生长的分子机制还不清楚。最近的研究表明，转录因子ROOT HAIR DEFECTIVE 6 LIKE 4（RSL4）协调荷尔蒙，环境和发育因子来触发极性生长。