English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/103827
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 3 veces en Web of Knowledge®  |  Pub MebCentral Ver citas en PubMed Central  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

The limit of the genetic adaptation to copper in freshwater phytoplankton

Autor Rouco, Mónica; López-Rodas, Victoria ; Gonzalez, Raquel; Huertas, I. Emma ; García-Sánchez, María J.; Flores Moya, Antonio; Costas, Eduardo
Palabras clave Copper
Cyanobacteria
Genetic adaptation
Ratchet protocol
Chlorophyceans
Fecha de publicación ago-2014
EditorSpringer
Citación Oecologia 175(4): 1179-1188 (2014)
ResumenCopper is one of the most frequently used algaecides to control blooms of toxic cyanobacteria in water supply reservoirs. Among the negative impacts derived from the use of this substance is the increasing resistance of cyanobacteria to copper toxicity, as well as changes in the community structure of native phytoplankton. Here, we used the ratchet protocol to investigate the differential evolution and maximum adaptation capacity of selected freshwater phytoplankton species to the exposure of increasing doses of copper. Initially, a dose of 2.5 μM CuSO4·5H2O was able to completely inhibit growth in three strains of the toxic cyanobacterium Microcystis aeruginosa, whereas growth of the chlorophyceans Dictyosphaerium chlorelloides and Desmodesmus intermedius (represented by two different strains) was completely abolished at 12 μM. A significant increase in resistance was achieved in all derived populations during the ratchet experiment. All the chlorophyceans were able to adapt to up to 270 μM of copper sulfate, but 10 μM was the highest concentration that M. aeruginosa strains were able to cope with, although one of the replicates adapted to 30 μM. The recurrent use and increasing doses of copper in water reservoirs could lead to the selection of copper-resistant mutants of both chlorophyceans and cyanobacteria. However, under high concentrations of copper, the composition of phytoplankton community could undergo a drastic change with cyanobacteria being replaced by copper-resistant chlorophyceans. This result stems from a distinct evolutionary potential of these species to adapt to this substance. © 2014 Springer-Verlag Berlin Heidelberg.
URI http://hdl.handle.net/10261/103827
DOI10.1007/s00442-014-2963-1
Identificadoresdoi: 10.1007/s00442-014-2963-1
issn: 0029-8549
e-issn: 1432-1939
Aparece en las colecciones: (ICMAN) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.