| Revue: | Brazilian archives of biology and technology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000374436 |
| ISSN: | 1516-8913 |
| Autores: | Kleinowski, Alitcia Moraes1 Brandao, Isabel Rodrigues1 Einhardt, Patrícia Milech1 Ribeiro, Marcia Vaz1 Peters, Jose Antonio1 Braga, Eugenia Jacira Bolacel1 |
| Instituciones: | 1Universidade Federal de Pelotas, Laboratorio de Cultura de Tecidos de Plantas, Capao do Leao, Rio Grande do Sul. Brasil |
| Año: | 2014 |
| Periodo: | Mar-Abr |
| Volumen: | 57 |
| Número: | 2 |
| Paginación: | 253-260 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | The aim of the present study was to investigate the influence of tyrosine on the in vitro growth and the production of the betacyanin pigment in Alternanthera philoxeroides and A. tenella. Nodal segments were inoculated in MS medium containing different concentrations of tyrosine (0, 25, 50 and 75 μM), and the number of sprouts and buds, height, root length, fresh matter of shoots and roots and betacyanin content were evaluated. In A. philoxeroides , the highest production of betacyanin (51.30 mg 100 g-1 FM) was in the stems with the addition of approximately 45 μM tyrosine, while the increase in the leaves was proportional to the tyrosine concentration, and the best average was obtained with a tyrosine concentration of 75 μM (15.32 mg 100 g-1 FM). Higher tyrosine concentrations were deleterious to the growth of A. tenella plants, and a concentration of 75 μM was considered toxic. However, a tyrosine concentration of 50 μM benefitted betacyanin production, which reached 36.5 mg 100 g-1 FM in the plant shoots. These results showed the positive effect of tyrosine on the production of betacyanin in both species; however, application at high concentrations hampered the growth of Alternanthera plants |
| Disciplinas: | Química, Biología |
| Palabras clave: | Bioquímica, Fisiología vegetal, Betacianinas, Inductores, Propagación in vitro, Lagunilla, Malezas |
| Keyword: | Chemistry, Biology, Biochemistry, Plant physiology, Betacyanins, Elicitors, In vitro propagation, Alligator weed, Weeds |
| Texte intégral: | Texto completo (Ver PDF) |
