title: Comparative transcriptome profiling of the maize primary, crown and seminal root in response to salinity stress.
abstract: 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.
authors: The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, College of Life Sciences, Shandong University, Jinan, 250100, Shandong, China.
authors: Maolin
authors: M
authors: Zhang
authors: The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, College of Life Sciences, Shandong University, Jinan, 250100, Shandong, China.
authors: Xiangpei
authors: X
authors: Kong
authors: Maize Institute, Shandong Academy of Agricultural Sciences/National Maize Improvement Sub-Center/National Engineering Laboratory for Wheat and Maize, Jinan, 250000, Shandong, China.
authors: Xiangbo
authors: X
authors: Xu
authors: The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, College of Life Sciences, Shandong University, Jinan, 250100, Shandong, China.
authors: Cuiling
authors: C
authors: Li
authors: The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, College of Life Sciences, Shandong University, Jinan, 250100, Shandong, China.
authors: Huiyu
authors: H
authors: Tian
authors: The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, College of Life Sciences, Shandong University, Jinan, 250100, Shandong, China.
authors: Zhaojun
authors: Z
authors: Ding
mesh_terms: D001483:Base Sequence; D018076:DNA, Complementary / Q000235:genetics; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant / Q000502:physiology*; D008969:Molecular Sequence Data; D018517:Plant Roots / Q000378:metabolism*; D060888:Real-Time Polymerase Chain Reaction; D020133:Reverse Transcriptase Polymerase Chain Reaction; D054712:Salinity; D017422:Sequence Analysis, DNA; D013312:Stress, Physiological / Q000502:physiology*; D059467:Transcriptome / Q000235:genetics*; D003313:Zea mays / Q000235:genetics / Q000378:metabolism*
chemical_list: D018076:DNA, Complementary