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Insulin Accelerates Seedling Growth of Canavalia ensiformis (Jack bean) |
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| Authors: | Antônia E.A. Oliveira Elane S. Ribeiro Maura da Cunha Valdirene M. Gomes Kátia V.S. Fernandes José Xavier-Filho |
| Affiliation: | 1. Laboratório de Química e Fun??o de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, Av. Alberto Lamego 2000, Parque Califórnia, 28013-600, Campos dos Goytacazes, RJ, Brazil 2. Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, Av. Alberto Lamego 2000, Parque Califórnia, 28013-600, Campos dos Goytacazes, RJ, Brazil 3. Laboratório de Fisiologia e Bioquímica de Microorganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, Av. Alberto Lamego 2000, Parque Califórnia, 28013-600, Campos dos Goytacazes, RJ, Brazil |
| Abstract: | Insulin is a 6 kDa peptide hormone that activates several metabolic processes and cellular growth. Germination studies showed that insulin, vanadyl sulphate (an insulin mimetic compound), tyrphostin (an inhibitor of insulin receptor kinase activity), pinitol (a chiro inositol analogue) and glucose were able to accelerate Canavalia ensiformis (Jack bean) seedling radicle and epicotyl development. Immunofluorescence microscopy analysis showed that proteins binding to insulin, insulin receptor and phosphoserine antibodies are localized in an internal layer of the C. ensiformis seed coat. These results and others previously reported from our laboratory suggest that insulin, insulin receptor and phosphoserine proteins could be components of signalling pathways akin to those present in animals. |
| Keywords: | Canavalia ensiformis Germination Insulin Insulin-like growth factors Seed coat |
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