A network of plant hormonal signals coordinates plant branching. Brassinosteroids are important in this network, acting as repressors of the strigolactone pathway and .
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How do brassinosteroids fit in bud outgrowth models?
J Exp Bot
January 2024
Waite Research Institute, School of Agriculture Food & Wine, The University of Adelaide, Adelaide, SA 5064, Australia.
A network of plant hormonal signals coordinates plant branching. Brassinosteroids are important in this network, acting as repressors of the strigolactone pathway and .
View Article and Find Full Text PDFMethyl esters of 23,24-Dinor-5α-cholan-22-oic acids as brassinosteroid Analogues. Synthesis, evaluation of plant growth promoting activity and Molecular docking.
Steroids
August 2023
Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México D.F., México, United States. Electronic address:
Five new brassinosteroid analogues were synthetized from 3β-acetoxy-23,24-dinorchol-4-en-22-oic acid. All the obtained compound showed significant activity in the Rice Lamina Inclination Test. Interestingly the effects of the methyl ester of 3β-hydroxy-6-oxo-23,24-dinorcholan-22-oic acid (14) at concentrations of 1 × 10 and 1 × 10 M proved to be higher than those produced by brassinolide.
View Article and Find Full Text PDFStructural insight into brassinosteroid perception by BRI1.
Nature
June 2011
Key Laboratory for Protein Sciences of Ministry of Education School of Life Sciences, Tsinghua University, Beijing 100084, China.
Brassinosteroids are essential phytohormones that have crucial roles in plant growth and development. Perception of brassinosteroids requires an active complex of BRASSINOSTEROID-INSENSITIVE 1 (BRI1) and BRI1-ASSOCIATED KINASE 1 (BAK1). Recognized by the extracellular leucine-rich repeat (LRR) domain of BRI1, brassinosteroids induce a phosphorylation-mediated cascade to regulate gene expression.
View Article and Find Full Text PDFPrediction of transcriptional regulatory elements for plant hormone responses based on microarray data.
BMC Plant Biol
February 2011
Faculty of Applied Biological Sciences, Gifu University, Gifu City, Gifu, Japan.
Background: Phytohormones organize plant development and environmental adaptation through cell-to-cell signal transduction, and their action involves transcriptional activation. Recent international efforts to establish and maintain public databases of Arabidopsis microarray data have enabled the utilization of this data in the analysis of various phytohormone responses, providing genome-wide identification of promoters targeted by phytohormones.
Results: We utilized such microarray data for prediction of cis-regulatory elements with an octamer-based approach.
The ratio of campesterol to sitosterol that modulates growth in Arabidopsis is controlled by STEROL METHYLTRANSFERASE 2;1.
Plant J
March 2001
Institut de Biologie Moléculaire des Plantes du CNRS, Département Biosynthèse et Fonctions des Isoprénoïdes, Institut de Botanique, 28 rue Goethe, 67083 Strasbourg, France.
The Arabidopsis genome contains three distinct genes encoding sterol-C24-methyltransferases (SMTs) involved in sterol biosynthesis. The expression of one of them, STEROL METHYLTRANSFERASE 2;1, was modulated in 35S:SMT2;1 Arabidopsis in order to study its physiological function. Plants overexpressing the transgene accumulate sitosterol, a 24-ethylsterol which is thought to be the typical plant membrane reinforcer, at the expense of campesterol.
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