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Brassinosteroids (BRs) are a group of plant steroid hormones that play crucial roles in a range of plant growth and development processes. BR action includes active BR formation by a complex biosynthesis process and driving BR biological function through signal transduction. Although the characterization of several BR action-related genes has been conducted in a few model plants, systematic information about these genes in bamboo is still lacking. We identified 64 genes related to BR action from the genome of moso bamboo (Phyllostachys edulis), including twenty that participated in BR biosynthesis and forty-four involved in BR signal transduction. The characteristics of all these candidate genes were identified by bioinformatics methods, including the gene structures, basic physical and chemical properties of proteins, conserved domains and evolutionary relationships. Based on the transcriptome data, the candidate genes demonstrated different expression patterns, which were further validated by qRT-PCR using templates from bamboo shoots with different heights. Thirty-four positive and three negative co-expression modules were identified by 44 candidate genes in the newly emerging bamboo shoot. The gene expression patterns and co-expression modules of BR action-related genes in bamboo shoots indicated that they might function to promote bamboo growth through BR biosynthesis and signal transduction processes. This study provides the first step towards the cloning and functional dissection of the role of BR action-related genes in moso bamboo, which also presents an excellent opportunity for genetic engineering using the candidate genes to improve bamboo quantity and quality.
This article was published in the following journal.
Name: Molecular biology reports
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