REVERSIBLE ROOT-TIP ROTATION IN ARABIDOPSIS SEEDLINGS INDUCED BY OBSTACLE-TOUCHING STIMULUS
REVERSIBLE ROOT-TIP ROTATION IN ARABIDOPSIS SEEDLINGS INDUCED BY OBSTACLE-TOUCHING STIMULUS
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DOI：
10.1126/science.250.4978.274
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发表时间：
1990-10-12
期刊：
影响因子：
56.9
通讯作者：
SHIMURA, Y
中科院分区：
文献类型：
--
作者：
OKADA, K;SHIMURA, Y
在土壤中，向下生长的植物根系经常改变其生长方向以避开路径上的障碍物。人们利用一个简单的系统对这种反应进行了分析，该系统为拟南芥幼苗的根尖提供持续的触碰障碍物的刺激。在与垂直方向成45度角放置的琼脂平板表面，根系呈现出一种波浪状生长模式，这是由根尖旋转的周期性逆转引起的。一组具有异常波浪状生长的突变体被用于证明至少有六个基因参与了这种刺激 - 反应相互作用。
In soil, downwardly growing plant roots frequently alter their growth direction to escape obstacles that lie in their paths. This response has been analyzed with a simple system that provides a constant obstacle-touching stimulus to root tips of young seedling of Arabidopsis thaliana. On the surface of agar plates, which were set at an angle of 45.degree. to the vertical, the roots exhibit a wavy growth pattern that is caused by periodic reversion of rotation of the root tip. A set of mutants with abnormal wavy growth was used to demonstrate that at least six genes are involved in this stimulus-response interaction.