Spatio-Temporal Transcriptional Dynamics of Maize Long Non-Coding RNAs Responsive to Drought Stress.

Clicks: 330
ID: 73113
2019
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Abstract
Long non-coding RNAs (lncRNAs) have emerged as important regulators in plant stress response. Here, we report a genome-wide lncRNA transcriptional analysis in response to drought stress using an expanded series of maize samples collected from three distinct tissues spanning four developmental stages. In total, 3488 high-confidence lncRNAs were identified, among which 1535 were characterized as drought responsive. By characterizing the genomic structure and expression pattern, we found that lncRNA structures were less complex than protein-coding genes, showing shorter transcripts and fewer exons. Moreover, drought-responsive lncRNAs exhibited higher tissue- and development-specificity than protein-coding genes. By exploring the temporal expression patterns of drought-responsive lncRNAs at different developmental stages, we discovered that the reproductive stage R1 was the most sensitive growth stage with more lncRNAs showing altered expression upon drought stress. Furthermore, lncRNA target prediction revealed 653 potential lncRNA-messenger RNA (mRNA) pairs, among which 124 pairs function in -acting mode and 529 in . Functional enrichment analysis showed that the targets were significantly enriched in molecular functions related to oxidoreductase activity, water binding, and electron carrier activity. Multiple promising targets of drought-responsive lncRNAs were discovered, including the V-ATPase encoding gene, . These findings extend our knowledge of lncRNAs as important regulators in maize drought response.
Reference Key
pang2019spatiotemporalgenes Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Pang, Junling;Zhang, Xia;Ma, Xuhui;Zhao, Jun;
Journal genes
Year 2019
DOI
E138
URL
Keywords
drought stress lncrna maize tissue and development specificity transcriptional profiling

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