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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/21665

Title: Inoculation methods using Rhodococcus erythropolis strain P30 affects bacterial assisted phytoextraction capacity of Nicotiana tabacum
Authors: Alvarez-Lopez, Vanessa
Prieto-Fernández, A.
Janssen, Jo
Herzig, R.
Vangronsveld, Jaco
Kidd, P. S.
Issue Date: 2016
Abstract: In this study different bacterial inoculation methods were tested for tobacco plants growing in a mine-soil contaminated with Pb, Zn, and Cd. The inoculation methods evaluated were: seed inoculation, soil inoculation, dual soil inoculation event, and seed+soil inoculation. Each inoculum was added at two bacterial densities (10(6) CFUs mL(-1) and 10(8) CFUs mL(-1)). The objectives were to evaluate whether or not the mode of inoculation or the number of applied microorganisms influences plant response. The most pronounced bacterial-induced effect was found for biomass production, and the soil inoculation treatment (using 10(6) CFUs mL(-1)) led to the highest increase in shoot dry weight yield (up to 45%). Bacterial-induced effects on shoot metal concentrations were less pronounced; although a positive effect was found on shoot Pb concentration when using 10(8) CFUs mL(-1) in the soil inoculation (29% increase) and in the seed+soil inoculation (34% increase). Also shoot Zn concentration increased by 24% after seed inoculation with 10(6) CFUs mL(-1). The best effects on the total metal yield were not correlated with an increasing number of inoculated bacteria. In fact the best results were found after a single soil inoculation using the lower cellular density of 10(6) CFUs mL(-1).
Notes: [Alvarez-Lopez, V.; Prieto-Fernandez, A.; Kidd, P. S.] CSIC, Inst Invest Agrobiol Galicia, Apdo 122, Santiago De Compostela 15780, Spain. [Janssen, J.; Vangronsveld, J.] Hasselt Univ, Ctr Environm Sci, Diepenbeek, Belgium. [Herzig, R.] Phytotech Fdn, Bern, Switzerland. [Herzig, R.] AGB, Bern, Switzerland.
URI: http://hdl.handle.net/1942/21665
DOI: 10.1080/15226514.2015.1109600
ISI #: 000369633200016
ISSN: 1522-6514
Category: A1
Type: Journal Contribution
Validation: ecoom, 2017
Appears in Collections: Research publications

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