Promoter methylation regulates the abundance of osa-miR393a in contrasting rice genotypes under salinity stress

Functional & Integrative Genomics
Showkat Ahmad GanieTapan Kumar Mondal

Abstract

MicroRNAs (miRNAs) are important molecules that regulate gene expression under salinity stress. Despite their evolutionary conservation, these regulatory elements have been shown to behave differently in different plant species under a particular environmental stress. In this study, we investigated the behavior of salt responsive osa-miR393a and its target gene (TIR1, LOC_Os05g05800) in salt-tolerant (FL478) and salt-sensitive (IR29) rice genotypes. It was found that the mature and precursor sequences of osa-miR393a as well as its cleavage site in TIR1 were conserved among salt tolerant and sensitive genotypes. Promoters of different salt-responsive miRNAs were also found to be less variable between salt-tolerant and salt-susceptible genotypes. Analysis of gene expression, promoter methylation, and cis-element abundance showed that osa-miR393a behaves differently in FL478 and IR29. Salt stress altered the expression pattern of osa-miR393a-TIR1 module in a time-dependent manner in the roots and shoots of two genotypes. Promoter methylation of this regulatory module was also altered at different time points under salt stress. Expression analysis in two genotypes indicated the overall down-regulation of osa-miR393a and up-regulati...Continue Reading

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Citations

Jan 14, 2018·Scientific Reports·Tapan Kumar MondalTilak Raj Sharma
Feb 14, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Showkat Ahmad GanieTapan Kumar Mondal
Dec 22, 2017·Functional & Integrative Genomics·Rangjin XieYingtao Ma
Jun 15, 2019·BMC Genomics·Sridhar RavichandranSylvie Cloutier
Jan 4, 2021·Plant Cell Reports·Showkat Ahmad Ganie, Golam Jalal Ahammed
Dec 29, 2020·Frontiers in Plant Science·Junzhong Liu, Zuhua He
Nov 9, 2018·The Science of the Total Environment·Jin XuVinay Kumar
Dec 4, 2021·Plant Molecular Biology·Showkat Ahmad GanieAlessandra Devoto

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