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- W2121314501 abstract "Although date palm is relatively salt-tolerant, little is known about the underlying molecular mechanisms that contribute to its salt tolerance. Only recently, investigators have uncovered microRNA-mediated post-transcriptional gene regulation, which is critical for typical plant development and adaptation to stress conditions such as salinity. To identify conserved and novel miRNAs in date palm and to characterise miRNAs that could play a role in salt tolerance, we have generated sRNA libraries from the leaves and roots of NaCl-treated and untreated seedlings of date palm. Deep sequencing of these four sRNA libraries yielded approximately 251 million reads. The bioinformatics analysis has identified 153 homologs of conserved miRNAs, 89 miRNA variants, and 180 putative novel miRNAs in date palm. Expression profiles under salinity revealed differential regulation of some miRNAs in date palm. In leaves, 54 of the identified miRNAs were significantly affected and the majority (70%) of them were upregulated, whereas in roots, 25 of the identified miRNAs were significantly affected and 76% of them were upregulated by the salinity stress. The salt-responsiveness of some of these miRNAs was further validated using semi-quantitative PCR (qPCR). Some of the predicted targets for the identified miRNA include genes with known functions in plant salt tolerance, such as potassium channel AKT2-like proteins, vacuolar protein sorting-associated protein, calcium-dependent and mitogen-activated proteins. As one of the first cultivated trees in the world that can tolerate a wide range of abiotic stresses, date palm contains a large population of conserved and nonconserved miRNAs that function at the post-transcriptional level. This study provided insights into miRNA-mediated gene expression that are important for adaptation to salinity in date palms." @default.
- W2121314501 created "2016-06-24" @default.
- W2121314501 creator A5015603765 @default.
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- W2121314501 creator A5080593893 @default.
- W2121314501 creator A5089900554 @default.
- W2121314501 date "2015-11-05" @default.
- W2121314501 modified "2023-09-25" @default.
- W2121314501 title "A genome-wide identification of the miRNAome in response to salinity stress in date palm (Phoenix dactylifera L.)" @default.
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- W2121314501 doi "https://doi.org/10.3389/fpls.2015.00946" @default.
- W2121314501 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4633500" @default.
- W2121314501 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26594218" @default.
- W2121314501 hasPublicationYear "2015" @default.