INVESTIGADORES
RAPISARDA Viviana Andrea
congresos y reuniones científicas
Título:
DIFFERENTIAL SENSITIVITY OF MENDICAGO SATIVA, ZEA MAYS AND RAPHANUS SATIVUS TO OLIVE CAKE AND SOIL
Autor/es:
HAMMANN, A.; ARIAS, M. E.; RAPISARDA, V. A.; HILAL, M.
Reunión:
Congreso; LII Annual Meeting of SAIB (Argentine Society for Biochemistry and Molecular Biology); 2016
Institución organizadora:
SAIB
Resumen:
Olive cake is a toxic and complex effluent derived from the olive oil industry. Its effect on plants growth has been studied by applying it in mixtures with different substrates. Here, the aim was to analyze the sensitivity of different plant species to fresh and 40 days-composted mixtures of olive cake and soil (FM and CM, respectively). Mendicago sativa (lucerne), Zea mays (corn) and Raphanus sativus (radish) were grown in 5, 10 and 20% of FM and CM during 20 days. Photosynthetic pigments, leaf area, biomass, and anatomical structure of roots were evaluated. M. sativa was the most affected, especially in the presence of the FM, showing a strong diminution of photosynthetic pigments, biomass and leaf area and being killed in 20% FM. R. sativusshowed a less marked decrease of those parameters, with similar values for FM and CM. Z. mays was the less affected, showing a slight growth inhibition. In root cross-sections, the most notable effects of the FM and CM were the development of aerenchyma in corn, and the cell wall thickening of the layer of cortex cells adjacent to endodermis in radish. Thus, Z. mays andR. sativus developed mechanisms of resistance against olive cake. Corn aerenchyma could be induced by anoxia in compact soil mixtures; while the wall thickening would be associated with the restriction of entrance of toxic compounds from the mixtures to radish plants.