title: Gene Expression Profile in the Long-Living Lotus: Insights into the Heat Stress Response Mechanism.
abstract: Lotus (Nelumbo Adans) is an aquatic perennial plant that flourished during the middle Albian stage. In this study, we characterized the digital gene expression signatures for China Antique lotus under conditions of heat shock stress. Using RNA-seq technology, we sequenced four libraries, specifically, two biological replicates for control plant samples and two for heat stress samples. As a result, 6,528,866 to 8,771,183 clean reads were mapped to the reference genome, accounting for 92-96% total clean reads. A total of 396 significantly altered genes were detected across the genome, among which 315 were upregulated and 81 were downregulated by heat shock stress. Gene ontology (GO) enrichment of differentially expressed genes revealed protein folding, cell morphogenesis and cellular component morphogenesis as the top three functional terms under heat shock stress. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis led to the identification of protein processing in endoplasmic reticulum, plant-pathogen interactions, spliceosome, endocytosis, and protein export as significantly enriched pathways. Among the upregulated genes, small heat shock proteins (sHsps) and genes related to cell morphogenesis were particularly abundant under heat stress. Data from the current study provide valuable clues that may help elucidate the molecular events underlying heat stress response in China Antique lotus.
authors.affiliation: Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Liu
authors.affiliation: Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
authors.forename: Fengfeng
authors.initials: F
authors.lastname: Du
authors.affiliation: Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
authors.forename: Naiwei
authors.initials: N
authors.lastname: Li
authors.affiliation: Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
authors.forename: Yajun
authors.initials: Y
authors.lastname: Chang
authors.affiliation: Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.
authors.forename: Dongrui
authors.initials: D
authors.lastname: Yao
mesh_terms: D050888:Heat-Shock Proteins, Small / Q000235:genetics* / Q000378:metabolism; D018869:Heat-Shock Response; D053858:Metabolic Networks and Pathways / Q000235:genetics; D018832:Molecular Chaperones / Q000235:genetics; D031653:Nelumbo / Q000235:genetics* / Q000378:metabolism; D018749:RNA, Plant / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism; D060888:Real-Time Polymerase Chain Reaction; D017423:Sequence Analysis, RNA; D059467:Transcriptome
chemical_list: D050888:Heat-Shock Proteins, Small; D018832:Molecular Chaperones; D018749:RNA, Plant