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Endophytic cultivable bacteria of the metal bioaccumulator Spartina maritima improve plant growth but not metal uptake in polluted marshes soils

Opened Access Endophytic cultivable bacteria of the metal bioaccumulator Spartina maritima improve plant growth but not metal uptake in polluted marshes soils

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Autor: Mesa, Jennifer
Mateos-Naranjo, Enrique
Caviedes, Miguel A.
Redondo Gómez, Susana
Pajuelo, Eloisa
Rodríguez Llorente, Ignacio David
Departamento: Universidad de Sevilla. Departamento de Biología Vegetal y Ecología
Universidad de Sevilla. Departamento de Microbiología y Parasitología
Fecha: 2015
Publicado en: Frontiers in Microbiology, 6,  01450
Tipo de documento: Artículo
Resumen: Endophytic bacterial population was isolated from Spartina maritima tissues, a heavy metal bioaccumulator cordgrass growing in the estuaries of Tinto, Odiel, and Piedras River (south west Spain), one of the most polluted areas in the world. Strains were identified and ability to tolerate salt and heavy metals along with plant growth promoting and enzymatic properties were analyzed. A high proportion of these bacteria were resistant toward one or several heavy metals and metalloids including As, Cu, and Zn, the most abundant in plant tissues and soil. These strains also exhibited multiple enzymatic properties as amylase, cellulase, chitinase, protease and lipase, as well as plant growth promoting properties, including nitrogen fixation, phosphates solubilization, and production of indole-3-acetic acid (IAA), siderophores and 1-aminocyclopropane-1-carboxylate (ACC) deaminase. The best performing strains (Micrococcus yunnanensis SMJ12, Vibrio sagamiensis SMJ18, and Salinic...
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Tamaño: 3.213Mb
Formato: PDF

URI: http://hdl.handle.net/11441/40846

DOI: http://dx.doi.org/10.3389/fmicb.2015.01450

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