title: Genome-wide analysis of the GRAS gene family in Chinese cabbage (Brassica rapa ssp. pekinensis).
abstract: The GRAS gene family is one of the most important families of transcriptional regulators. In this study, 48 GRAS genes are identified from Chinese cabbage, and they are classified into eight groups according to the classification of Arabidopsis. The characterization, classification, gene structure and phylogenetic construction of GRAS proteins are performed. Distribution mapping shows that GRAS proteins are nonrandomly localized in 10 chromosomes. Fifty-five orthologous gene pairs are shared by Chinese cabbage and Arabidopsis, and interaction networks of these orthologous genes are constructed. The expansion of GRAS genes in Chinese cabbage results from genome triplication. Among the 17 species examined, 14 higher plants carry the GRAS genes, whereas two lower plants and one fungi species do not. Furthermore, the expression patterns of GRAS genes exhibit differences in three tissues based on RNA-seq data. Taken together, this comprehensive analysis will provide rich resources for studying GRAS protein functions in Chinese cabbage.
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Song
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Tong-Kun
authors.initials: TK
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Wei-Ke
authors.initials: WK
authors.lastname: Duan
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Qing-Hua
authors.initials: QH
authors.lastname: Ma
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Ren
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China. Electronic address: hxl@njau.edu.cn.
authors.forename: Xi-Lin
authors.initials: XL
authors.lastname: Hou
mesh_terms: D017360:Arabidopsis / Q000235:genetics*; D001937:Brassica / Q000235:genetics*; D017343:Genes, Plant; D056726:Genetic Association Studies; D005810:Multigene Family; D010802:Phylogeny; D010940:Plant Proteins / Q000235:genetics; D018749:RNA, Plant / Q000235:genetics; D017423:Sequence Analysis, RNA; D014157:Transcription Factors / Q000235:genetics
chemical_list: D010940:Plant Proteins; D018749:RNA, Plant; D014157:Transcription Factors
keywords: Chinese cabbage; Comparative studies; Conserved synteny; GRAS transcription factor; Gene expression pattern analysis