# Genome-Wide Identification of the BREVIS RADIX Gene Family in Foxtail Millet: Function, Evolution, and Expression

## TL;DR

This paper identifies and analyzes the BREVIS RADIX gene family in foxtail millet to understand its role in stress resistance and improve crop resilience.

## Contribution

The study introduces new sub-clades, conserved elements, and gene-miRNA interactions in the BRX gene family of foxtail millet.

## Key findings

- Phylogenetic analysis reveals new sub-clades and evolutionary trajectories in the BRX gene family.
- Motif and domain analyses identify new conserved elements and gene-miRNA interactions.
- Expression profiling under stress shows novel gene expression patterns linked to stress responses.

## Abstract

Background: Foxtail millet (Setaria italica), domesticated from green foxtail (Setaria viridis), is crucial for global food security. Given increasing environmental challenges, exploring its stress-resistance mechanisms via researching the BREVIS RADIX (BRX) gene family is urgent. Methods: The study combines advanced bioinformatics and experimental validation. It uses phylogenetic, motif, domain, synteny analyses, miRNA prediction, and quantitative expression profiling under stress. Results: Phylogenetic analysis reveals new sub-clades and trajectories. Motif and domain analyses find new conserved elements. Statistical models show unique selective forces. Synteny analysis identifies genomic architecture and new blocks. miRNA prediction reveals gene-miRNA interactions, and expression profiling shows new patterns. Conclusions: The research offers new insights into the BRX family’s role in foxtail millet’s growth and stress responses, laying a foundation for crop genetic improvement and enhancing stress resilience for global food security.