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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >A genome-wide transcriptional analysis using Arabidopsis thaliana Affymetrix gene chips determined plant responses to phosphate deprivation
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A genome-wide transcriptional analysis using Arabidopsis thaliana Affymetrix gene chips determined plant responses to phosphate deprivation

机译：使用拟南芥Affymetrix基因芯片的全基因组转录分析确定了植物对磷酸盐缺乏的反应

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摘要

Phosphorus, one of the essential elements for plants, is often a limiting nutrient because of its low availability and mobility in soils. Significant changes in plant morphology and biochemical processes are associated with phosphate (Pi) deficiency. However, the molecular bases of these responses to Pi deficiency are not thoroughly elucidated. Therefore, a comprehensive survey of global gene expression in response to Pi deprivation was done by using Arabidopsis thaliana whole genome Affymetrix gene chip (ATH1) to quantify the spatio-temporal variations in transcript abundance of 22,810 genes. The analysis revealed a coordinated induction and suppression of 612 and 254 Pi-responsive genes, respectively. The functional classification of some of these genes indicated their involvement in various metabolic pathways, ion transport, signal transduction, transcriptional regulation, and other processes related to growth and development. This study is a detailed analysis of Pi starvation-induced changes in gene expression of the entire genome of Arabidopsis correlated with biochemical processes. The results not only enhance our knowledge about molecular processes associated with Pi deficiency, but also facilitate the identification of key molecular determinants for improving Pi use by crop species.
机译：磷是植物必不可少的元素之一，由于其在土壤中的利用率低和流动性低，因此常常是一种限制性营养素。植物形态和生化过程的重大变化与磷酸盐（Pi）缺乏有关。但是，这些对Pi缺乏反应的分子基础尚未完全阐明。因此，通过使用拟南芥全基因组Affymetrix基因芯片（ATH1）量化了22,810个基因的转录本时空变化，对响应于Pi剥夺的全球基因表达进行了全面调查。分析显示分别协同诱导和抑制了612和254个Pi响应基因。其中一些基因的功能分类表明它们参与了各种代谢途径，离子转运，信号转导，转录调控以及其他与生长和发育有关的过程。这项研究是对Pi饥饿诱导的拟南芥整个基因组基因表达与生化过程相关的变化的详细分析。结果不仅增强了我们对与磷缺乏相关的分子过程的了解，而且还有助于确定关键分子决定因素，以改善作物品种对磷的利用。

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