Profiling microRNA expression during multi-staged date palm (Phoenix dactylifera L.) fruit development

Chengqi Xin, Wanfei Liu, Qiang Lin, Xiaowei Zhang, Peng Cui, Fusen Li, Guangyu Zhang, Linlin Pan, Ali Al-Amer, Hailiang Mei, Ibrahim S. Al-Mssallem, Songnian Hu, Hasan Awad Al-Johi, Jun Yu

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

MicroRNAs (miRNAs) play crucial roles in multiple stages of plant development and regulate gene expression at posttranscriptional and translational levels. In this study, we first identified 238 conserved miRNAs in date palm (Phoenix dactylifera) based on a high-quality genome assembly and defined 78 fruit-development-associated (FDA) miRNAs, whose expression profiles are variable at different fruit development stages. Using experimental data, we subsequently detected 276 novel P. dactylifera-specific FDA miRNAs and predicted their targets. We also revealed that FDA miRNAs function mainly in regulating genes involved in starch/sucrose metabolisms and other carbon metabolic pathways; among them, 221 FDA miRNAs exhibit negative correlation with their corresponding targets, which suggests their direct regulatory roles on mRNA targets. Our data define a comprehensive set of conserved and novel FDA miRNAs along with their expression profiles, which provide a basis for further experimentation in assigning discrete functions of these miRNAs in P. dactylifera fruit development.
Original languageEnglish (US)
Pages (from-to)242-251
Number of pages10
JournalGenomics
Volume105
Issue number4
DOIs
StatePublished - Jan 29 2015

ASJC Scopus subject areas

  • Genetics

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