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首页> 外文期刊>Journal of Experimental Botany >Perception, transduction, and integration of nitrogen and phosphorus nutritional signals in the transcriptional regulatory network in plants
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Perception, transduction, and integration of nitrogen and phosphorus nutritional signals in the transcriptional regulatory network in plants

机译：植物转录调控网络中氮素和磷营养信号的感知，转导和整合

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Nitrate and phosphate ions are major sources of nitrogen and phosphorus for plants. In addition to their vital roles as indispensable macronutrients, these ions function as signalling molecules and induce a variety of responses. Plants adapt to different levels of nutrients by altering their gene expression profile and subsequent physiological and morphological responses. Advances made in recent years have provided novel insights into plant nutrient sensing and modulation of gene expression. Key breakthroughs include elucidation of the mechanisms underlying post-translational regulation of NIN-LIKE PROTEIN (NLP) and PHOSPHATE STARVATION RESPONSE (PHR) family transcription factors, which function as master regulators of responses to nitrate and phosphate starvation, respectively. Determination of the mechanisms whereby these nutrient signals are integrated through NIGT1/HHO family proteins has likewise represented important progress. Further studies have revealed novel roles in nutrient signalling of transcription factors that have previously been shown to be associated with other signals, such as light and phytohormones. Nitrate and phosphate signals are thus transmitted through an intricate gene regulatory network with the help of various positive and negative transcriptional regulators. These complex regulatory patterns enable plants to integrate input signals from various environmental factors and trigger appropriate responses, as exemplified by the regulatory module involving NIGT1/HHO family proteins. These mechanisms collectively support nutrient homeostasis in plants.
机译：硝酸盐和磷酸盐离子是植物的主要氮和磷来源。除了它们作为不可或缺的Macronurivers的重要作用之外，这些离子函数作为信号分子并诱导各种反应。通过改变它们的基因表达谱和随后的生理和形态反应来适应不同水平的营养水平。近年来提出的进展为植物养分感测和基因表达的调节提供了新的见解。关键突破包括阐明萘蛋白（NIN）和磷酸盐饥饿响应（PHR）家族转录因子的翻译后调节的机制，其分别用作硝酸盐和磷酸盐饥饿的母体调节剂。通过NIGT1 / HHO系列蛋白质整合这些营养信号的机制的测定同样具有重要的进展。进一步的研究揭示了先前已被证明与其他信号相关的转录因子的营养信号传导的新颖作用，例如光和植物激素。因此，硝酸盐和磷酸盐信号通过各种阳性和阴性转录调节剂通过复杂的基因调节网络传播。这些复杂的监管模式使植物能够集成来自各种环境因素的输入信号，并触发适当的响应，如涉及Nigt1 / hho家族蛋白的调节模块所示。这些机制共同支持植物中的营养素稳态。

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