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Tissue-specific transcriptomic profiling of Plantago major provides insights for the involvement of vasculature in phosphate deficiency responses

文献类型： 外文期刊

作者： Huang, Jing 1 ; Huang, Zhiqiang 2 ; Zhou, Xiangjun 1 ; Xia, Chao 1 ; Imran, Muhammad 3 ; Wang, Shujuan 1 ; Xu, Congsha 1 ;

作者机构： 1.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA

2.Biost Technol Co Ltd, Beijing 102206, Peoples R China

3.Univ Sargodha, Univ Coll Agr, Dept Soil & Environm Sci, Sargodha 40100, Pakistan

4.Zhejiang Acad Agr Sci, Inst Sericulture, Hangzhou 310021, Zhejiang, Peoples R China

5.Purdue Univ, Purdue Ctr Plant Biol, W Lafayette, IN 47907 USA

关键词： Plantago major; Vasculature; RNA-Seq; De novo assembly; Phosphate deficiency

期刊名称：MOLECULAR GENETICS AND GENOMICS （ 影响因子：3.291； 五年影响因子：3.257 ）

ISSN： 1617-4615

年卷期： 2019 年 294 卷 1 期

页码：

收录情况： SCI

摘要： The vasculature of higher plants is important with transport of both nutrient and information molecules. To understand the correspondence of this tissue in molecular responses under phosphate (Pi) deficiency, Plantago major, a model plant for vasculature biology study, was chosen in our analysis. After RNA-Seq and de novo transcriptome assembly of 24 libraries prepared from the vasculature of P. major, 37,309 unigenes with a mean length of 1571 base pairs were obtained. Upon 24h of Pi deficiency, 237 genes were shown to be differentially expressed in the vasculature of P. major. Among these genes, only 27 have been previously identified to be specifically expressed in the vasculature tissues in other plant species. Temporal expression of several marker genes associated with Pi deficiency showed that the time period of first 24h is at the beginning stage of more dynamic expression patterns. In this study, we found several physiological processes, e.g., phosphate metabolism and remobilization, sucrose metabolism, loading and synthesis, plant hormone metabolism and signal transduction, transcription factors, and metabolism of other minerals, were mainly involved in early responses to Pi deficiency in the vasculature. A number of vasculature genes with promising roles in Pi deficiency adaptation have been identified and deserve further functional characterization. This study clearly demonstrated that plant vasculature is actively involved in Pi deficiency responses and understanding of this process may help to create plants proficient to offset Pi deficiency.

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