title: Genome-Wide Analysis of the NAC Gene Family in Physic Nut (Jatropha curcas L.).
abstract: The NAC proteins (NAM, ATAF1/2 and CUC2) are plant-specific transcriptional regulators that have a conserved NAM domain in the N-terminus. They are involved in various biological processes, including both biotic and abiotic stress responses. In the present study, a total of 100 NAC genes (JcNAC) were identified in physic nut (Jatropha curcas L.). Based on phylogenetic analysis and gene structures, 83 JcNAC genes were classified as members of, or proposed to be diverged from, 39 previously predicted orthologous groups (OGs) of NAC sequences. Physic nut has a single intron-containing NAC gene subfamily that has been lost in many plants. The JcNAC genes are non-randomly distributed across the 11 linkage groups of the physic nut genome, and appear to be preferentially retained duplicates that arose from both ancient and recent duplication events. Digital gene expression analysis indicates that some of the JcNAC genes have tissue-specific expression profiles (e.g. in leaves, roots, stem cortex or seeds), and 29 genes differentially respond to abiotic stresses (drought, salinity, phosphorus deficiency and nitrogen deficiency). Our results will be helpful for further functional analysis of the NAC genes in physic nut.
authors.affiliation: Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Zhenying
authors.initials: Z
authors.lastname: Wu
authors.affiliation: Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Xueqin
authors.initials: X
authors.lastname: Xu
authors.affiliation: Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Wangdan
authors.initials: W
authors.lastname: Xiong
authors.affiliation: Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
authors.forename: Pingzhi
authors.initials: P
authors.lastname: Wu
authors.affiliation: Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
authors.forename: Yaping
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
authors.forename: Meiru
authors.initials: M
authors.lastname: Li
authors.affiliation: Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
authors.forename: Guojiang
authors.initials: G
authors.lastname: Wu
authors.affiliation: Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
authors.forename: Huawu
authors.initials: H
authors.lastname: Jiang
mesh_terms: D017360:Arabidopsis / Q000235:genetics; D029681:Arabidopsis Proteins / Q000235:genetics; D001483:Base Sequence; D032461:Chromosomes, Plant / Q000235:genetics; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant / Q000235:genetics*; D031286:Jatropha / Q000235:genetics*; D010802:Phylogeny; D010940:Plant Proteins / Q000145:classification / Q000235:genetics*; D018517:Plant Roots / Q000235:genetics; D012097:Repressor Proteins / Q000235:genetics; D012639:Seeds / Q000235:genetics; D016415:Sequence Alignment; D013312:Stress, Physiological / Q000235:genetics; D014158:Transcription, Genetic / Q000235:genetics
chemical_list: C517610:ATAF1 protein, Arabidopsis; C505769:ATAF2 protein, Arabidopsis; D029681:Arabidopsis Proteins; C107294:CUC2 protein, Arabidopsis; C535121:NARS2 protein, Arabidopsis; D010940:Plant Proteins; D012097:Repressor Proteins