Negative gravitropism in plant roots
Negative gravitropism in plant roots
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DOI：
10.1038/nplants.2016.155
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发表时间：
2016-11-01
期刊：
影响因子：
18
通讯作者：
Chen, Rujin
中科院分区：
文献类型：
--
作者：
Ge, Liangfa;Chen, Rujin
植物能够在称为向重力性的过程中使其根生长朝向重力，这对于根生长到土壤中、对于水和养分获取以及对于锚植物是必需的。在这里，我们表明，根向重力性依赖于新的蛋白质，负向重力反应的根（NGR）。在蒺藜苜蓿和拟南芥中，NGR的缺失逆转了根向地性的方向，导致根向上生长。
Plants are capable of orienting their root growth towards gravity in a process termed gravitropism, which is necessary for roots to grow into soil, for water and nutrient acquisition and to anchor plants. Here we show that root gravitropism depends on the novel protein, NEGATIVE GRAVITROPIC RESPONSE OF ROOTS (NGR). In both Medicago truncatula and Arabidopsis thaliana, loss of NGR reverses the direction of root gravitropism, resulting in roots growing upward.