title: Evaluating phytoextraction efficiency of two high-biomass crops after soil amendment and inoculation with rhizobacterial strains.
abstract: We evaluated the effect of compost amendment and/or bacterial inoculants on the growth and metal accumulation of Salix caprea (clone BOKU 01 AT-004) and Nicotiana tabacum (in vitro-bred clone NBCu10-8). Soil was collected from an abandoned Pb/Zn mine and rhizobacterial inoculants were previously isolated from plants growing at the same site. Plants were grown in untreated or compost-amended (5% w/w) soil and were inoculated with five rhizobacterial strains. Non-inoculated plants were also established as a control. Compost addition increased the shoot DW yield of N. tabacum but not S. caprea, while it decreased soil metal availability and lowered shoot Cd/Zn concentrations in tobacco plants. Compost amendment enhanced the shoot Cd/Zn removal due to the growth promotion of N. tabacum or to the increase in metal concentration in S. caprea leaves. Bacterial inoculants increased photosynthetic efficiency (particularly in N. tabacum) and sometimes modified soil metal availability, but this did not lead to a significant increase in Cd/Zn removal. Compost amendment was more effective in improving the Cd and Zn phytoextraction efficiency than bioaugmentation.
authors.affiliation: Instituto de Investigaciones Agrobiológicas de Galicia, CSIC, Apdo. 122, 15780, Santiago de Compostela, Spain. vanessa@iiag.csic.es.
authors.forename: Álvarez-López
authors.initials: ÁL
authors.lastname: Vanessa
authors.affiliation: Instituto de Investigaciones Agrobiológicas de Galicia, CSIC, Apdo. 122, 15780, Santiago de Compostela, Spain.
authors.forename: Prieto-Fernández
authors.initials: PF
authors.lastname: Ángeles
authors.affiliation: Área de Ecología, Facultad de Ciencias, Campus A Zapateira, Universidad de A Coruña, 15071, A Coruña, Spain.
authors.forename: Roiloa
authors.initials: R
authors.lastname: Sergio
authors.affiliation: Instituto de Investigaciones Agrobiológicas de Galicia, CSIC, Apdo. 122, 15780, Santiago de Compostela, Spain.
authors.forename: Rodríguez-Garrido
authors.initials: RG
authors.lastname: Beatriz
authors.affiliation: Phytotech Foundation, Quartiergasse 12, 3013, Berne, CH, Switzerland.
authors.forename: Herzig
authors.initials: H
authors.lastname: Rolf
authors.affiliation: Department of Forest- and Soil Sciences, University of Natural Resources and Life Sciences, Konrad Lorenzstraße 24, 3430, Tulln, Austria.
authors.forename: Puschenreiter
authors.initials: P
authors.lastname: Markus
authors.affiliation: Instituto de Investigaciones Agrobiológicas de Galicia, CSIC, Apdo. 122, 15780, Santiago de Compostela, Spain.
authors.forename: Kidd Petra
authors.initials: KP
authors.lastname: Susan
mesh_terms: D059827:Agricultural Inoculants; D001673:Biodegradation, Environmental; D018533:Biomass; D002104:Cadmium / Q000378:metabolism*; D018556:Crops, Agricultural; D018515:Plant Leaves / Q000737:chemistry; D018520:Plant Shoots / Q000378:metabolism; D032108:Salix / Q000378:metabolism*; D012987:Soil; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*; D014026:Nicotiana / Q000378:metabolism*; D015032:Zinc / Q000378:metabolism*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium; D015032:Zinc
keywords: Bioaugmentation; Cadmium; Compost; Nicotiana tabacum; Phytoextraction; Salix caprea; Zinc