title: Transcriptome Analysis of Salt Stress Responsiveness in the Seedlings of Dongxiang Wild Rice (Oryza rufipogon Griff.).
abstract: Dongxiang wild rice (Oryza rufipogon Griff.) is the progenitor of cultivated rice (Oryza sativa L.), and is well known for its superior level of tolerance against cold, drought and diseases. To date, however, little is known about the salt-tolerant character of Dongxiang wild rice. To elucidate the molecular genetic mechanisms of salt-stress tolerance in Dongxiang wild rice, the Illumina HiSeq 2000 platform was used to analyze the transcriptome profiles of the leaves and roots at the seedling stage under salt stress compared with those under normal conditions. The analysis results for the sequencing data showed that 6,867 transcripts were differentially expressed in the leaves (2,216 up-regulated and 4,651 down-regulated) and 4,988 transcripts in the roots (3,105 up-regulated and 1,883 down-regulated). Among these differentially expressed genes, the detection of many transcription factor genes demonstrated that multiple regulatory pathways were involved in salt stress tolerance. In addition, the differentially expressed genes were compared with the previous RNA-Seq analysis of salt-stress responses in cultivated rice Nipponbare, indicating the possible specific molecular mechanisms of salt-stress responses for Dongxiang wild rice. A large number of the salt-inducible genes identified in this study were co-localized onto fine-mapped salt-tolerance-related quantitative trait loci, providing candidates for gene cloning and elucidation of molecular mechanisms responsible for salt-stress tolerance in rice.
authors.affiliation: College of Life Sciences, Jiangxi Normal University, Nanchang, China.|Institute for Advanced Study, Jiangxi Normal University, Nanchang, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: College of Life Sciences, Jiangxi Normal University, Nanchang, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Yang
authors.affiliation: College of Life Sciences, Jiangxi Normal University, Nanchang, China.
authors.forename: Fenglei
authors.initials: F
authors.lastname: Cui
authors.affiliation: College of Life Sciences, Jiangxi Normal University, Nanchang, China.
authors.forename: Fantao
authors.initials: F
authors.lastname: Zhang
authors.affiliation: College of Life Sciences, Jiangxi Normal University, Nanchang, China.
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Luo
authors.affiliation: College of Life Sciences, Jiangxi Normal University, Nanchang, China.
authors.forename: Jiankun
authors.initials: J
authors.lastname: Xie
mesh_terms: D015536:Down-Regulation / Q000187:drug effects / Q000235:genetics; D020869:Gene Expression Profiling / Q000379:methods*; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D063990:Gene Ontology; D018745:Genome, Plant; D012275:Oryza / Q000187:drug effects / Q000235:genetics* / Q000502:physiology*; D018517:Plant Roots / Q000187:drug effects / Q000235:genetics; D018520:Plant Shoots / Q000187:drug effects / Q000235:genetics; D040641:Quantitative Trait Loci / Q000235:genetics; D012015:Reference Standards; D036226:Seedlings / Q000187:drug effects / Q000235:genetics* / Q000502:physiology*; D017423:Sequence Analysis, RNA; D012965:Sodium Chloride / Q000494:pharmacology*; D013312:Stress, Physiological / Q000187:drug effects / Q000235:genetics*; D059467:Transcriptome / Q000235:genetics; D015854:Up-Regulation / Q000187:drug effects / Q000235:genetics
chemical_list: D012965:Sodium Chloride