AtGRP2, a cold-induced nucleo-cytoplasmic RNA-binding protein, has a role in flower and seed development
| Autor: | Dirk Inzé, Rose Lucia Braz Ramos, Riet De Rycke, Gilberto Sachetto-Martins, Rosa Maria Barrôco, Adriana Flores Fusaro, Claudia Magioli, Tatiana Cardoso Coutinho, Camila Martins Rangel-Lima, Vanessa Cardeal Jorge, Gilbert Engler, Silvia Nora Bocca |
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| Rok vydání: | 2006 |
| Předmět: |
Genetics
Messenger RNA Protein family biology Arabidopsis Proteins Meristem Arabidopsis RNA-Binding Proteins RNA-binding protein Plant Science Flowers Cold-shock domain biology.organism_classification Cell biology Cold Temperature Protein Transport Gene Expression Regulation Plant Nucleic Acids Seeds Nucleic acid Arabidopsis thaliana Gene Protein Binding |
| Zdroj: | Planta. 225(6) |
| ISSN: | 0032-0935 |
| Popis: | The glycine-rich protein AtGRP2 is one of the four members of the cold-shock domain (CSD) protein family in Arabidopsis. It is characterized by the presence of a nucleic acid-binding CSD domain, two glycine-rich domains and two CCHC zinc-fingers present in nucleic acid-binding proteins. In an attempt to further understand the role of CSD/GRP proteins in plants, we have proceeded to the functional characterization of the AtGRP2 gene. Here, we demonstrate that AtGRP2 is a nucleo-cytoplasmic protein involved in Arabidopsis development with a possible function in cold-response. Expression analysis revealed that the AtGRP2 gene is active in meristematic tissues, being modulated during flower development. Down-regulation of AtGRP2 gene, using gene-silencing techniques resulted in early flowering, altered stamen number and affected seed development. A possible role of AtGRP2 as an RNA chaperone is discussed. |
| Databáze: | OpenAIRE |
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