Artículo
Growth and photosynthetic responses to copper stress of an invasive cordgrass, Spartina densiflora
Autor/es | Mateos Naranjo, Enrique
Redondo Gómez, Susana Cambrollé Silva, Jesús Figueroa Clemente, Manuel Enrique |
Departamento | Universidad de Sevilla. Departamento de Biología Vegetal y Ecología |
Fecha de publicación | 2008 |
Fecha de depósito | 2023-06-30 |
Publicado en |
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Resumen | Spartina densiflora Brongn. is found in coastal marshes of south-west Spain, growing in sediments with between 300 and 3000 mg Cu kg-1 total soil DW (450-4500 mg Cu kg-1 supposing that the soil porosity is 0.5). An experiment ... Spartina densiflora Brongn. is found in coastal marshes of south-west Spain, growing in sediments with between 300 and 3000 mg Cu kg-1 total soil DW (450-4500 mg Cu kg-1 supposing that the soil porosity is 0.5). An experiment was designed to investigate the effect of copper from 0 to 5000 mg kg-1 (64 mmol l-1) on the photosynthetic apparatus and the growth of S. densiflora. We also determined total ash, copper, calcium, magnesium and phosphorous concentrations, as well as C/N ratio. S. densiflora survived to concentrations as high as 320 mg Cu kg-1 DW in leaves, although excess of Cu diminished water use efficiency and Ca-, Mg- and P-uptake. Also, quantum efficiency of PSII, net photosynthetic rate, stomatal conductance and pigment concentrations declined with increasing external Cu. Finally, the decline in the photosynthetic function resulted in a biomass reduction of between 50 and 80% (for 600 and 5000 mg Cu kg-1, respectively). |
Agencias financiadoras | Ministerio de Ciencia Y Tecnología (MCYT). España Ministerio de Medio Ambiente. España |
Identificador del proyecto | 04212007
PCI2006-A7-0641 |
Cita | Mateos Naranjo, E., Redondo Gómez, S., Cambrollé Silva, J. y Figueroa Clemente, M.E. (2008). Growth and photosynthetic responses to copper stress of an invasive cordgrass, Spartina densiflora. Marine Environmental Research, 66 (4), 459-465. https://doi.org/10.1016/j.marenvres.2008.07.007. |
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