Mechanisms of sodium uptake by roots of higher plants

Mechanisms of sodium uptake by roots of higher plants
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高等植物根部吸收钠的机制

DOI:
10.1007/s11104-009-0076-0
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发表时间:
2009
期刊:
影响因子:
4.9
通讯作者:
Wang, Suo-Min
Wang, Suo-Min
中科院分区:
农林科学2区
文献类型:
--
作者:
Flowers, Timothy J.;Zhang, Jin-Lin;Wang, Suo-Min

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土壤盐碱化对农业产量的负面影响很大。对于农业植物,对盐度的敏感性通常(但不完全)是由于土壤中Na+的丰富,因为过量的Na+对植物有毒。因此,降低作物对Na+的吸收是控制作物Na+积累、提高作物抗盐性的关键,也是最有效的途径。了解高等植物根系对Na+的吸收机制对于调控植物的耐盐性至关重要。因此,本文综述的目的是强调和讨论最近的进展,我们理解的Na+吸收的植物根系在生理和分子水平的机制。我们的结论是,继续努力,以调查在高等植物根Na+吸收的机制是必要的,特别是低亲和力的Na+吸收,因为它是钠进入植物生长在盐渍土中的手段。
The negative impact of soil salinity on agricultural yields is significant. For agricultural plants, sensitivity to salinity is commonly (but not exclusively) due to the abundance of Na+in the soil as excess Na+is toxic to plants. We consider reducing Na+uptake to be the key, as well as the most efficient approach, to control Na+accumulation in crop plants and hence to improve their salt resistance. Understanding the mechanism of Na+uptake by the roots of higher plants is crucial for manipulating salt resistance. Hence, the aim of this review is to highlight and discuss recent advances in our understanding of the mechanisms of Na+uptake by plant roots at both physiological and molecular levels. We conclude that continued efforts to investigate the mechanisms of root Na+uptake in higher plants are necessary, especially that of low-affinity Na+uptake, as it is the means by which sodium enters into plants growing in saline soils.
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