Journal
FRONTIERS IN PLANT SCIENCE
Volume 14, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2023.1080427
Keywords
long non-coding RNAs; nitrogen stress; RNA-seq; Camellia sinensis; lateral roots
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In this study, a total of 16,452 lncRNAs were identified in tea plants under nitrogen stress and control conditions, of which 9,451 were differentially expressed lncRNAs (DE-lncRNAs). Co-expression clustering analysis revealed that nitrogen-responsive lncRNAs may be involved in various biological processes, including plant hormone signal transduction, nitrogen metabolism, and protein processing in the endoplasmic reticulum. The findings of this study provide valuable insights into the potential regulation of lncRNAs on nitrogen stress and offer resources for improving the nitrogen use efficiency of tea plants.
Tea (Camellia sinensis) is one of the significant cash crops in China. As a leaf crop, nitrogen supply can not only increase the number of new shoots and leaves but also improve the tenderness of the former. However, a conundrum remains in science, which is the molecular mechanism of nitrogen use efficiency, especially long non-coding RNA (lncRNA). In this study, a total of 16,452 lncRNAs were identified through high-throughput sequencing analysis of lateral roots under nitrogen stress and control conditions, of which 9,451 were differentially expressed lncRNAs (DE-lncRNAs). To figure out the potential function of nitrogen-responsive lncRNAs, co-expression clustering was employed between lncRNAs and coding genes. KEGG enrichment analysis revealed nitrogen-responsive lncRNAs may involve in many biological processes such as plant hormone signal transduction, nitrogen metabolism and protein processing in endoplasmic reticulum. The expression abundance of 12 DE-lncRNAs were further verified by RT-PCR, and their expression trends were consistent with the results of RNA-seq. This study expands the research on lncRNAs in tea plants, provides a novel perspective for the potential regulation of lncRNAs on nitrogen stress, and valuable resources for further improving the nitrogen use efficiency of tea plants.
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