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Comparative Transcriptome Profiling of the Maize Primary, Crown and Seminal Root in Response to Salinity Stress

文献类型： 外文期刊

作者： Zhang, Maolin 1 ; Kong, Xiangpei 1 ; Xu, Xiangbo 2 ; Li, Cuiling 1 ; Tian, Huiyu 1 ; Ding, Zhaojun 1 ;

作者机构： 1.Shandong Univ, Coll Life Sci, Key Lab Plant Cell Engn & Germplasm Innovat, Jinan 250100, Peoples R China

2.Shandong Acad Agr Sci, Natl Maize Improvement Subctr, Maize Inst, Natl Engn Lab Wheat & Maize, Jinan 250000, Shandong, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2015 年 10 卷 3 期

页码：

收录情况： SCI

摘要： Soil salinity is a major constraint to crop growth and yield. The primary and lateral roots of Arabidopsis thaliana are known to respond differentially to a number of environmental stresses, including salinity. Although the maize root system as a whole is known to be sensitive to salinity, whether or not different structural root systems show differential growth responses to salinity stress has not yet been investigated. The maize primary root (PR) was more tolerant of salinity stress than either the crown root (CR) or the seminal root (SR). To understand the molecular mechanism of these differential growth responses, RNA-Seq analysis was conducted on cDNA prepared from the PR, CR and SR of plants either non-stressed or exposed to 100 mM NaCl for 24 h. A set of 444 genes were shown to be regulated by salinity stress, and the transcription pattern of a number of genes associated with the plant salinity stress response differed markedly between the various types of root. The pattern of transcription of the salinity-regulated genes was shown to be very diverse in the various root types. The differential transcription of these genes such as transcription factors, and the accumulation of compatible solutes such as soluble sugars probably underlie the differential growth responses to salinity stress of the three types of roots in maize.

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