RIKEN Plant Science Center, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan.
J Exp Bot. 2011 Feb;62(4):1399-409. doi: 10.1093/jxb/erq410. Epub 2010 Dec 31.
Nitrogen is the mineral nutrient that often limits plant growth and development. In response to changes in nitrogen supply, plants display elaborate responses at both physiological and morphological levels to adjust their growth and development. Because higher plants consist of multiple organs with different functions and nutritional requirements, they rely on local and long-distance signalling pathways to coordinate the responses at the whole-plant level. Phytohormones have been considered as signalling substances of such pathways. Amongst phytohormones, abscisic acid, auxin, and cytokinins have been closely linked to nitrogen signalling. Recent evidence has provided some insights into how nitrogen and the phytohormone signals are integrated to bring about changes in physiology and morphology. In this review, the evidence is summarized, mostly focusing on examples related to nitrogen acquisition.
氮是一种经常限制植物生长和发育的矿物质营养物。为了应对氮供应的变化，植物在生理和形态水平上表现出精心的反应，以调整其生长和发育。由于高等植物由具有不同功能和营养需求的多个器官组成，它们依赖于局部和远程信号通路来协调整个植物水平的反应。植物激素被认为是这些通路的信号物质。在植物激素中，脱落酸、生长素和细胞分裂素与氮信号密切相关。最近的证据提供了一些关于氮和植物激素信号如何整合以带来生理和形态变化的见解。在这篇综述中，总结了证据，主要集中在与氮吸收相关的例子上。
