Root Nutrient Foraging
Root Nutrient Foraging
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DOI：
10.1104/pp.114.245225
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发表时间：
2014-10-01
期刊：
影响因子：
7.4
通讯作者：
von Wiren, Nicolaus
中科院分区：
文献类型：
--
作者：
Giehl, Ricardo F. H.;von Wiren, Nicolaus
在植物的生命周期中，土壤中养分的有效性在空间和时间上大多是异质的。植物能够通过改变其根系结构来有效地探索含有有限养分的土壤区域，从而适应养分短缺或局部养分可用性。研究表明，不同养分的缺乏会导致根系结构和形态的变化，这些变化至少在一定程度上是养分特异性的。在这里，我们强调什么是已知的营养物质的获取和发育和生理反应可以耦合到增加根系的营养觅食的个别根系组件的重要性。此外，我们回顾了突出的分子机制参与改变根系响应当地的养分供应或植物的营养状况。
During a plant's lifecycle, the availability of nutrients in the soil is mostly heterogeneous in space and time. Plants are able to adapt to nutrient shortage or localized nutrient availability by altering their root system architecture to efficiently explore soil zones containing the limited nutrient. It has been shown that the deficiency of different nutrients induces root architectural and morphological changes that are, at least to some extent, nutrient specific. Here, we highlight what is known about the importance of individual root system components for nutrient acquisition and how developmental and physiological responses can be coupled to increase nutrient foraging by roots. In addition, we review prominent molecular mechanisms involved in altering the root system in response to local nutrient availability or to the plant's nutritional status.