Auxin-regulated changes in protein phosphorylation in pea epicotyls |
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| Authors: | A S Reddy S Chengappa B W Poovaiah |
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| Affiliation: | 1. School of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, China;2. School of Life Science and Biotechnology, Inner Mongolia University of Science, Baotou 014000, China;3. Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan 430068, China;1. Department of Pediatric Neurology, Government Medical College Trivandrum, Kerala, India;2. Department of Community Medicine, Government Medical College Manjeri, Kerala, India;3. Department of Pediatrics, Government Medical College Konni, Kerala, India;4. KIMS HEALTH, Trivandrum, Kerala, India;1. Foundation for Innovative New Diagnostics, Geneva, Switzerland;2. Drugs for Neglected Diseases Initiative - Latin America, Rio de Janeiro, Brazil;3. Drugs for Neglected Diseases Initiative, Geneva, Switzerland;4. World Health Organization, Department of Neglected Tropical Diseases, Geneva, Switzerland |
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| Abstract: | Auxins regulate various aspects of plant growth and development. However, the mechanism by which these hormones elicit diverse physiological processes is not clear. We present evidence for the role of auxin in protein phosphorylation and the possible involvement of calmodulin in auxin-induced changes. In the presence of auxin, phosphorylation of 23,000, 82,000, 105,000 and 110,000 molecular weight polypeptides markedly decreased whereas phosphorylation of 19,000, 24,000 and 28,000 molecular weight polypeptides increased. These results open up a new experimental approach in understanding the molecular mechanism by which auxins regulate various physiological processes in plants. |
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