| Revue: | Brazilian journal of biology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000275540 |
| ISSN: | 1519-6984 |
| Autores: | Santos, B.A1 Maia, L.C Cavalcante, U.M.T2 Correia, M.T.S Coelho, L.C.B.B |
| Instituciones: | 1Universidade Federal de Pernambuco, Departamento de Micologia, Recife, Pernambuco. Brasil 2Universidade Federal Rural de Pernambuco, Departamento de Bioquímica, Recife, Pernambuco. Brasil |
| Año: | 2001 |
| Periodo: | Nov |
| Volumen: | 61 |
| Número: | 4 |
| Paginación: | 693-700 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | The effects of mycorrhizal inoculation and increasing soil P levels on the expression of total proteins and peroxidase activity on passion fruit roots were evaluated. The experimental design was entirely at random, with four treatments of inoculation (a - control; b - Gigaspora albida; c - Scutellospora heterogama; d - mixture of G. albida, G. margarita, S. heterogama, and Glomus clarum) × three levels of soil P (4, 11, and 30 mg/dm³ of soil), each with three replicates. Plants were harvested 70 days after inoculation, when root colonization, shoot P level, protein content, and enzymatic activity of peroxidase (PAGE - 7%) on root extract were evaluated. Regarding protein, there was no significant difference among the treatments, except between those roots receiving mixed inoculum and 11 mg P/dm³ of soil. Effect of P on protein concentration, when compared with the inoculation effect was observed. For peroxidase, there was an eletrophoretic band common to all treatments (rf: 0.43) and another that was absent only in noncolonized plants, grown in soil with lower P (rf: 0.46). Mycorrhizal specific bands were not present but a small decrease of intensity of bands in noncolonized plants was observed. Conversely, the control roots presented a single band (rf: 0.33) not observed in the other extracts, that may demonstrate an inhibitory effect of AMF on some host activities. The data showed the influence of P level in soil on the protein expression of roots, suggesting the influence of this nutrient on root genetic expression as |
| Disciplinas: | Agrociencias, Biología |
| Palabras clave: | Frutales, Fisiología vegetal, Passiflora edulis, Micorrizas arbusculares, Proteínas, Raíces, Peroxidasas, Fósforo |
| Keyword: | Agricultural sciences, Biology, Fruit trees, Plant physiology, Passiflora edulis, Arbuscular mycorrhizae, Proteins, Peroxidase, Passion fruit |
| Texte intégral: | Texto completo (Ver HTML) |
