Structural and functional divergence of the Mpc1 genes in wheat and barley

BMC Evolutionary Biology
Ksenia V Strygina, Elena K Khlestkina

Abstract

The members of the Triticeae tribe are characterised by the presence of orthologous and homoeologous gene copies regulating flavonoid biosynthesis. Among transcription factors constituting a regulatory MBW complex, the greatest contribution to the regulation of flavonoid biosynthetic pathway is invested by R2R3-Myb-type TFs. Differently expressed R2R3-Myb copies activate the synthesis of various classes of flavonoid compounds in different plant tissues. The aim of this research was the identification, comparison and analysis of full-length sequences of the duplicated R2R3-Myb Mpc1 (Myb protein c1) gene copies in barley and wheat genomes. The Mpc1 genes were identified in homoeologous group 4 and 7 chromosomes: a total of 3 copies in barley (Hordeum vulgare L.) and 8 copies in bread wheat (Triticum aestivum L.) genomes. All Mpc1 genes have a similar two-exon structure, and almost all of them are transcriptionally active. The calculation of the divergence time revealed that first duplication between 4 and 7 chromosomes of the common ancestor of the Triticeae tribe occurred about 35-46 million years ago (MYA); the last duplication arised about 16-19 MYA before the divergence Triticum and Hordeum genera The connection between gene ...Continue Reading

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Citations

Mar 1, 2019·BMC Evolutionary Biology·Yuriy L OrlovLeonid L Moroz
May 1, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Natalia A ShvachkoAlexei V Konarev
Apr 29, 2021·Journal of Agricultural and Food Chemistry·Chenlu ZhouNing Han

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Datasets Mentioned

BETA
NGB22812
KP265977
AB983542

Methods Mentioned

BETA
PCR

Software Mentioned

MEGA
IPK Barley BLAST Server
BLASTN
OLIGO
FGENESH
BLAST

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