Genome-wide identification and expression profiling of cytosine-5 DNA methyltransferases during drought and heat stress in wheat (Triticum aestivum).

Abstract:

:DNA methylation is a potential epigenetic mechanism that regulates genome stability, development, and stress mitigation in plants. It is mediated by cytosine-5 DNA methyltransferases (C5-MTases). We identified 52 wheat C5-MTases; and based on domain structure and phylogenetics, these 52 C5-MTases were classified into four sub-families including MET, CMT, DRM and DNMT2; and were distributed on 18 chromosomes. Cis-acting regulatory elements analysis identified abiotic stress-responsive, phytohormone-responsive, development-related and light-related elements in the promoters of TaC5-MTases. We also examined the transcript abundance of TaC5-MTases in different tissues, developmental stages and under abiotic stresses. Notably, most of the TaC5-MTases (TaCMT2, TaCMT3b, TaCMT3c, TaMET1, TaDRM10, TaDNMT2) showed differential regulation of their transcript abundance during drought and heat stress. Overall, the above results provide significant insights into the expression and the probable functions of TaC5-MTases and will also expedite future research programs to explore the mechanisms of epigenetic regulation in wheat.

journal_name

Genomics

journal_title

Genomics

authors

Gahlaut V,Samtani H,Khurana P

doi

10.1016/j.ygeno.2020.08.031

subject

Has Abstract

pub_date

2020-11-01 00:00:00

pages

4796-4807

issue

6

eissn

0888-7543

issn

1089-8646

pii

S0888-7543(20)30864-8

journal_volume

112

pub_type

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