| Journal: | Electronic journal of biotechnology |
| Database: | PERIÓDICA |
| System number: | 000358911 |
| ISSN: | 0717-3458 |
| Authors: | Rivera Domínguez, Marisela1 Astorga Cienfuegos, Karen Rosalinda1 Tiznado Hernández, Martín Ernesto2 González Aguilar, Gustavo Adolfo2 |
| Institutions: | 1Centro de Investigación en Alimentación y Desarrollo A.C., Coordinación de Ciencia de los Alimentos, Hermosillo, Sonora. México 2Centro de Investigación en Alimentación y Desarrollo A.C., Coordinación de Tecnología de Alimentos de Origen Vegetal, Hermosillo, Sonora. México |
| Year: | 2012 |
| Volumen: | 15 |
| Number: | 5 |
| Country: | Chile |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | The defence mechanisms that are activated by methyl jasmonate (MJ) in fruits are not well understood. In this work, we studied the expression of defence genes in papaya fruit that are induced by the exposure to MJ and/or low temperatures. The papaya fruits Maradol were randomly divided into two groups: one group was the untreated control and the other was treated with 10-4 M of MJ. Half of the fruits from each of the two groups were stored after treatment for 5 days at 5ºC and 2 days at 20ºC. We studied the expression levels of the pdf1.1 and pdf1.2 genes by amplification from expression libraries created from the pulp and skin tissues of the papaya fruit. As a reference, the mRNA level of the 18s ribosomal gene was used. In the skin tissue, the expression levels of the pdf1.1 and pdf1.2 genes were higher immediately after MJ treatment compared to the control. Furthermore, the expression of pdf1.2 remained high after MJ treatment and subsequent storage compared to the control. It was therefore concluded that the activation of the pdf1.1 and pdf1.2 genes forms part of the molecular defence mechanism in fruits that is activated by exposure to MJ. To our knowledge, this is the first study that analyzes the gene expression in papaya fruit that is induced by the exogenous application of methyl jasmonate and cold treatment |
| Disciplines: | Agrociencias, Biología |
| Keyword: | Frutales, Genética, Biotecnología, Papaya, Carica papaya, ARN, ADN, Mecanismos de defensa, Proteínas, Expresión génica, Metil jasmonato, Frío, Plantas transgénicas |
| Keyword: | Agricultural sciences, Biology, Fruit trees, Genetics, Biotechnology, Papaya, Carica papaya, RNA, DNA, Defence systems, Proteins, Genetic expression, Methyl jasmonate, Cold, Transgenic plants |
| Full text: | Texto completo (Ver HTML) |
