Comparative structural analysis of BRI 1 receptor in monocot and dicot plants

Brassinosteroids (BRs) play  crucial role in growth and development of plants. The BRI1 receptor is the main receptor for BR hormones, which is a member of the leucine-rich kinase-like receptors. The BRI1 receptor has been reported in multiple plant species, but structural differences between monocots and dicots remain poorly understood. In the present study, bioinformatic analyses of the BRI gene sequence were conducted on dicot and monocot plants with existing genomic data. The analysis of genome data from 95 plants species revealed a presence of 141 BRI1 genes, with 92 being dicot and 49 being monocot. Different evolutionary paths have been identified for BRI1 genes in monocots and dicots through analysis of the phylogenetic tree. Additionally, our analysis of BRI1 orthologs based on physicochemical properties indicated a conserved structure among BRI1 proteins, with distinctions noticeable between monocots and dicots. The majority of BRI1 genes were found to contain a single exon and the average MW and pI values for BRI1 were lower in monocots compared to dicots. However, we predicted a greater number of phosphorylation sites in BRI1 orthologs of monocots. This study offers insights for future research on BRI1 genetic modification.

Comparative structural analysis of BRI 1 receptor in monocot and dicot plants Keywords:

Brassinosteroids , Receptor kinase , Sequence structure , Evolutionary analysis