INVESTIGADORES
MONTEOLIVA Mariela Ines
congresos y reuniones científicas
Título:
Developmental features and stress-induced responses in knockdown L-proline dehydrogenases plants
Autor/es:
CECCHINI NM; MONTEOLIVA MI; ÁLVAREZ ME
Lugar:
Va. Carlos Paz, Córdoba
Reunión:
Congreso; XLIV Reunión de la Sociedad Argentina de Bioquímica y Biología Celular; 2008
Institución organizadora:
Sociedad Argentina de Bioquímica y Biología Celular
Resumen:
We have recently found that tissues triggering the Hypersensitive Response (HR) upon recognition of avirulent pathogen display early transcriptional of proline (Pro) degradation genes. Activation of ProDH (Pro dehydrogenase) and reduction of P5CDH (P5C dehydrogenase) are detected at the center, but not in the periphery, of the HR lesion. Such responses are induced in wild type plants treated with exogenous salicylic acid (SA). Consistently, sid2 and npr1 mutant plants defective in the SA pathway, do not activate these changes in response to avirulent pathogen. Interestingly, ProDH knockdown plants (siRNAProDH) show reduced cell death during incompatible interactions suggesting the involvement the involvement of ProDH in HR generation. Putative contributions of this enzyme to HR factors are analyzed. We also evaluate developmental features of the siRNAProDH lines. ISSN 0327 - 9545
