Physiological functions of mineral macronutrients

被引:885
作者
Maathuis, Frans J. M. [1 ]
机构
[1] Univ York, Dept Biol, York YO10 5DD, N Yorkshire, England
基金
英国生物技术与生命科学研究理事会;
关键词
HIGH-AFFINITY POTASSIUM; SULFATE TRANSPORTERS; SULFUR METABOLISM; GENE-EXPRESSION; ARABIDOPSIS; PHOSPHATE; ACCUMULATION; CHANNEL; AKT1; PLANTS;
D O I
10.1016/j.pbi.2009.04.003
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Plants require calcium, magnesium, nitrogen, phosphorous, potassium and sulfur in relatively large amounts (>0.1% of dry mass) and each of these so-called macronutrients is essential for a plant to complete its life cycle. Normally, these minerals are taken up by plant roots from the soil solution in ionic form with the metals Ca2+, Mg2+ and K+ present as free cations, P and S as their oxyanions phosphate (PO43-) and sulfate PO42-) and N as anionic nitrate (NO3-)or cation ammonium (NH4+). Recently, important progress has been made in identifying transport and regulatory mechanisms for macronutrients and the mechanisms of uptake and distribution. These and the main physiological roles of each nutrient will be discussed.
引用
收藏
页码:250 / 258
页数:9
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