Identification of the conserved and novel miRNAs in mulberry by high-throughput sequencing

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Abstract

miRNAs are a class of non-coding endogenous small RNAs. They play vital roles in plant growth, development, and response to biotic and abiotic stress by negatively regulating genes. Mulberry trees are economically important species with multiple uses. However, to date, little is known about mulberry miRNAs and their target genes. In the present study, three small mulberry RNA libraries were constructed and sequenced using high-throughput sequencing technology. Results showed 85 conserved miRNAs belonging to 31 miRNA families and 262 novel miRNAs at 371 loci. Quantitative real-time PCR (qRT-PCR) analysis confirmed the expression pattern of 9 conserved and 5 novel miRNAs in leaves, bark, and male flowers. A total of 332 potential target genes were predicted to be associated with these 113 novel miRNAs. These results provide a basis for further understanding of mulberry miRNAs and the biological processes in which they are involved. © 2014 Jia et al.

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Jia, L., Zhang, D., Qi, X., Ma, B., Xiang, Z., & He, N. (2014). Identification of the conserved and novel miRNAs in mulberry by high-throughput sequencing. PLoS ONE, 9(8). https://doi.org/10.1371/journal.pone.0104409

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