文献类型：期刊文献

英文题名：Genome-Wide Identification and Characterization of Long Noncoding RNAs in Populus x canescens Roots Treated With Different Nitrogen Fertilizers

作者：Zhou, Jing[1] Yang, Ling-Yu[1] Chen, Xin[1] Shi, Weng-Guang[1] Deng, Shu-Rong[1] Luo, Zhi-Bin[1]

第一作者：周婧

通信作者：Zhou, J[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Silviculture Natl Forestry & Grassland Adm, Beijing, Peoples R China

年份：2022

卷号：13

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000800300900001)】；

语种：英文

外文关键词：nitrate; ammonium; Populus x canescens; roots; lncRNAs; ceRNAs

摘要：Nitrate (NO3-) and ammonium (NH4+) are the primary forms of inorganic nitrogen acquired by plant roots. LncRNAs, as key regulators of gene expression, are a class of non-coding RNAs larger than 200 bp. However, knowledge about the regulatory role of lncRNAs in response to different nitrogen forms remains limited, particularly in woody plants. Here, we performed strand-specific RNA-sequencing of P. x canescens roots under three different nitrogen fertilization treatments. In total, 324 lncRNAs and 6,112 mRNAs were identified as showing significantly differential expression between the NO3- and NH4NO3 treatments. Moreover, 333 lncRNAs and 6,007 mRNAs showed significantly differential expression between the NH4+ and NH4NO3 treatments. Further analysis suggested that these lncRNAs and mRNAs have different response mechanisms for different nitrogen forms. In addition, functional annotation of cis and trans target mRNAs of differentially expressed lncRNAs indicated that 60 lncRNAs corresponding to 49 differentially expressed cis and trans target mRNAs were involved in plant nitrogen metabolism and amino acid biosynthesis and metabolism. Furthermore, 42 lncRNAs were identified as putative precursors of 63 miRNAs, and 28 differentially expressed lncRNAs were potential endogenous target mimics targeted by 96 miRNAs. Moreover, ceRNA regulation networks were constructed. MSTRG.6097.1, MSTRG.13550.1, MSTRG.2693.1, and MSTRG.12899.1, as hub lncRNAs in the ceRNA networks, are potential candidate lncRNAs for studying the regulatory mechanism in poplar roots under different nitrogen fertilization treatments. The results provide a basis for obtaining insight into the molecular mechanisms of lncRNA responses to different nitrogen forms in woody plants.