Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Campus Universitario de Teatinos, 29071 Málaga, Spain.
J Exp Bot. 2017 May 1;68(10):2489-2500. doi: 10.1093/jxb/erx037.
Nitrogen (N) is frequently a limiting factor for tree growth and development. Because N availability is extremely low in forest soils, trees have evolved mechanisms to acquire and transport this essential nutrient along with biotic interactions to guarantee its strict economy. Here we review recent advances in the molecular basis of tree N nutrition. The molecular characteristics, regulation, and biological significance of membrane proteins involved in the uptake and transport of N are addressed. The regulation of N uptake and transport in mycorrhized roots and transcriptome-wide studies of N nutrition are also outlined. Finally, several areas of future research are suggested.
氮（N）通常是树木生长和发育的限制因素。由于森林土壤中 N 的有效性极低，树木进化出了获取和运输这种必需养分的机制，同时还与生物相互作用来保证其严格的经济性。在这里，我们回顾了树木氮营养的分子基础的最新进展。讨论了参与 N 吸收和运输的膜蛋白的分子特征、调控和生物学意义。还概述了菌根根中 N 吸收和运输的调控以及全转录组水平的 N 营养研究。最后，提出了几个未来的研究领域。
