|Online ISSN : 2349-8080
Issues : 12 per year
Publisher : Excellent Publishers
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2Department of Biosciences, Integral University, Dasuli, Kursi Road, Lucknow-226 026, Uttar Pradesh, India
Brassinosteroids (BRs) are growth-initiating steroidal compound found in pollen, seeds, and young vegetative tissues throughout the plant kingdom. Brassinosteroids (BRs) collectively refers to naturally-occurring 5α cholestane steroids that elicit growth stimulation in nano- or micromolar concentrations. BRs that are biosynthesized using sterols as precursors are structurally similar to the cholesterol-derived, human steroid hormones and insect molting hormones. BRs have been known for decades to be effective in plant growth promotion. However, definitive evidence for their roles in growth and development remained unclear until the recent characterization of BR dwarf mutants isolated from Arabidopsis and other plants. This review inspects essential role of BRs in diverse developmental programs, including cell expansion, vascular differentiation, etiolation, and reproductive development. Current improvements regarding BR-regulated gene expression and signal transduction are also discussed.
Brassinosteroids,Physiological effect,Signaling pathway,Steroidal compounds