Table_6_Genome-wide identification, characterization, and functional analysis of lncRNAs in Hevea brasiliensis.xlsx

Natural rubber (NR) is an essential industrial raw material widely used in our life. Hevea brasiliensis (Reyan7-33-97) is an economic plant producing natural rubber. Long non-coding RNAs (lncRNAs) are emerging as crucial regulators in numerous biological processes while the characterization and analysis of lncRNAs in Hevea brasiliensis are still largely unrevealed. We integrated the transcriptome datasets from multiple tissues to identify rubber lncRNAs. As a result, 12,029 lncRNAs were found and characterized with notably distinctive features such as longer exon, lower expression levels and GC content, and more tissue specificity in comparison with mRNAs. We discovered thousands of tissue-specific lncRNAs in rubber root, latex, bark, leaf, flower, and seed tissues. The functional enrichment result reveals that tissue-specific lncRNAs are potentially referred to particular functions of tissues, while the non-tissue specific is related to the translation and metabolic processes. In the present study, a comprehensive lncRNA dataset was identified and its functional profile in Hevea brasiliensis was explored, which provides an annotation resource and important clues to understand the biological functions of lncRNAs in Hevea brasiliensis.

天然橡胶（Natural Rubber，NR）是一类不可或缺的工业原料，广泛应用于日常生活中。巴西橡胶树（Hevea brasiliensis，热研7-33-97）是生产天然橡胶的经济作物。长链非编码RNA（Long non-coding RNAs，lncRNAs）作为众多生物过程中的关键调控因子逐渐受到关注，然而巴西橡胶树中lncRNAs的表征与分析仍尚未得到充分阐释。本研究整合多组织转录组数据集以鉴定橡胶树lncRNAs，最终共鉴定并表征了12029条lncRNAs。相较于信使RNA（mRNA），这些lncRNAs具有显著的特征差异：外显子更长、表达水平与GC含量更低，且组织特异性更强。本研究在橡胶树的根、胶乳、树皮、叶、花与种子组织中，共发现了数千条组织特异性lncRNAs。功能富集分析结果显示，组织特异性lncRNAs可能与对应组织的特定功能相关，而非组织特异性lncRNAs则与翻译及代谢过程密切相关。本研究鉴定得到了一套全面的巴西橡胶树lncRNA数据集，并解析了其功能特征，该数据集可为解析巴西橡胶树lncRNAs的生物学功能提供注释资源与重要线索。