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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 | Publisher: | TAYLOR & FRANCIS INC | Source: | INTERNATIONAL JOURNAL OF PHYTOREMEDIATION, 18 (4), p. 406-415 | 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. | Keywords: | bioaugmentation; high biomass crops; inoculation protocols; plant growthpromoting rhizobacteria (PGPR); phytoremediation; trace metal-contaminated soil;bioaugmentation; high biomass crops; inoculation protocols; plant growth-promoting rhizobacteria (PGPR); phytoremediation; trace metal-contaminated soil | Document URI: | http://hdl.handle.net/1942/21665 | ISSN: | 1522-6514 | e-ISSN: | 1549-7879 | DOI: | 10.1080/15226514.2015.1109600 | ISI #: | 000369633200016 | Rights: | © 2016 Taylor & Francis Group, LLC | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2017 |
Appears in Collections: | Research publications |
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