摘要
土壤中总磷的含量很高,但其中能被植物吸收利用的有效磷浓度往往很低,因此,缺磷已经成为农业生产中重要的限制因子之一。由于磷在植物生长发育过程中的重要作用,植物在进化的过程中形成了一系列的适应机制以应对低磷胁迫。随着分子生物技术在植物营养研究中的广泛应用,研究人员相继克隆了大量参与植物体内磷动态平衡调控的基因,其中包括磷转运子、转录因子、非编码的小RNA及其它低磷胁迫诱导基因等。这些基因相互作用共同形成了复杂的植物耐低磷胁迫遗传调控网络。另外,利用数量遗传学的研究思路,大量与植物磷效率相关的数量性状位点(quantitative trait locus,QTL)也被定位出来。这些研究结果对于理解植物耐低磷胁迫的遗传调控机制具有重要作用。本文就以上研究的国内外最新进展进行综述。
Although very high total phosphorus （P） content in soils, the soil available P for plants is often very low. Hence, lack of available P in soils has been one of the limitation factors in agricultural production. Because of important roles for P in plant growth and development, a series of mechanisms are involved in plant adaptation in response to low P stress. The wide usage of molecular biological technology in the research of plant nutrition leads to the discovery of a number of genes involved in plant P homeostasis, such as P transporters, transcriptional factors, noncoding RNA, P-starvationinduced （PSI） genes. These genes interact with each other to form a complex network for genetic regulation in plant tolerance to low P stress. Moreover, quantitative trait locus （QTL） analysis is often used to detect genetic loci controlling plant P efficiency in different species. All of these results can be used to understand genetic mechanism in plant tolerance to P deficiency. This paper makes a brief review on advances in genetic regulation of plant tolerance to low P stress.
出处
《植物营养与肥料学报》
CAS
CSCD
北大核心
2013年第3期733-744,共12页
Journal of Plant Nutrition and Fertilizers
基金
科技部"973"项目(2011CB100301)
国家自然科学基金项目(31201672)
中央高校基本科研业务费(0900206042)资助
关键词
低磷胁迫
植物响应
基因
数量性状位点
遗传调控
phosphorus deficiency
plant response
gene
quantitative trait locus
genetic regulation
