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Current Bioinformatics

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ISSN (Print): 1574-8936
ISSN (Online): 2212-392X

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General Research Article

Bioinformatics Analysis Reveals Functions of MicroRNAs in Rice Under the Drought Stress

Author(s): Yan Peng, Yuewu Liu* and Xinbo Chen*

Volume 15, Issue 8, 2020

Page: [927 - 936] Pages: 10

DOI: 10.2174/1574893615666200207092410

Price: $65

Abstract

Background: Drought is one of the most damaging and widespread abiotic stresses that can severely limit the rice production. MicroRNAs (miRNAs) act as a promising tool for improving the drought tolerance of rice and have become a hot spot in recent years.

Objective: In order to further extend the understanding of miRNAs, the functions of miRNAs in rice under drought stress are analyzed by bioinformatics.

Methods: In this study, we integrated miRNAs and genes transcriptome data of rice under the drought stress. Some bioinformatics methods were used to reveal the functions of miRNAs in rice under drought stress. These methods included target genes identification, differentially expressed miRNAs screening, enrichment analysis of DEGs, network constructions for miRNA-target and target-target proteins interaction.

Results: (1) A total of 229 miRNAs with differential expression in rice under the drought stress, corresponding to 73 rice miRNAs families, were identified. (2) 1035 differentially expressed genes (DEGs) were identified, which included 357 up-regulated genes, 542 down-regulated genes and 136 up/down-regulated genes. (3) The network of regulatory relationships between 73 rice miRNAs families and 1035 DEGs was constructed. (4) 25 UP_KEYWORDS terms of DEGs, 125 GO terms and 7 pathways were obtained. (5) The protein-protein interaction network of 1035 DEGs was constructed.

Conclusion: (1) MiRNA-regulated targets in rice might be mainly involved in a series of basic biological processes and pathways under drought conditions. (2) MiRNAs in rice might play critical roles in Lignin degradation and ABA biosynthesis. (3) MiRNAs in rice might play an important role in drought signal perceiving and transduction.

Keywords: MircoRNA-target, drought stress, protein kinase, ABA, Oryza sativa, rice.

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