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Inoculating Helianthus annuus (sunflower) grown in zinc and cadmium contaminated soils with plant growth promoting bacteria--effects on phytoremediation strategies.
Chemosphere. 2013 Jun; 92(1):74-83.C

Abstract

Plant growth promoting bacteria (PGPR) may help reducing the toxicity of heavy metals to plants in polluted environments. In this work the effects of inoculating metal resistant and plant growth promoting bacterial strains on the growth of Helianthus annuus grown in Zn and Cd spiked soils were assessed. The PGPR strains Ralstonia eutropha (B1) and Chrysiobacterium humi (B2) reduced losses of weight in metal exposed plants and induced changes in metal bioaccumulation and bioconcentration - with strain B2 decreasing up to 67% Zn accumulation and by 20% Zn bioconcentration factor (BCF) in the shoots, up to 64% Zn uptake and 38% Zn BCF in the roots, and up to 27% Cd uptake and 27% Cd BCF in plant roots. The impact of inoculation on the bacterial communities in the rhizosphere of the plant was also assessed. Bacterial community diversity decreased with increasing levels of metal contamination in the soil, but in rhizosphere soil of plants inoculated with the PGPR strains, a higher bacterial diversity was kept throughout the experimental period. Inoculation of sunflower, particularly with C. humi (B2), appears to be an effective way of enhancing the short term stabilization potential of the plant in metal contaminated land, lowering losses in plant biomass and decreasing aboveground tissue contamination.

Authors+Show Affiliations

CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal. amarques@porto.ucp.ptNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23582407

Citation

Marques, Ana P G C., et al. "Inoculating Helianthus Annuus (sunflower) Grown in Zinc and Cadmium Contaminated Soils With Plant Growth Promoting Bacteria--effects On Phytoremediation Strategies." Chemosphere, vol. 92, no. 1, 2013, pp. 74-83.
Marques AP, Moreira H, Franco AR, et al. Inoculating Helianthus annuus (sunflower) grown in zinc and cadmium contaminated soils with plant growth promoting bacteria--effects on phytoremediation strategies. Chemosphere. 2013;92(1):74-83.
Marques, A. P., Moreira, H., Franco, A. R., Rangel, A. O., & Castro, P. M. (2013). Inoculating Helianthus annuus (sunflower) grown in zinc and cadmium contaminated soils with plant growth promoting bacteria--effects on phytoremediation strategies. Chemosphere, 92(1), 74-83. https://doi.org/10.1016/j.chemosphere.2013.02.055
Marques AP, et al. Inoculating Helianthus Annuus (sunflower) Grown in Zinc and Cadmium Contaminated Soils With Plant Growth Promoting Bacteria--effects On Phytoremediation Strategies. Chemosphere. 2013;92(1):74-83. PubMed PMID: 23582407.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Inoculating Helianthus annuus (sunflower) grown in zinc and cadmium contaminated soils with plant growth promoting bacteria--effects on phytoremediation strategies. AU - Marques,Ana P G C, AU - Moreira,Helena, AU - Franco,Albina R, AU - Rangel,António O S S, AU - Castro,Paula M L, Y1 - 2013/04/09/ PY - 2012/10/22/received PY - 2013/02/01/revised PY - 2013/02/17/accepted PY - 2013/4/16/entrez PY - 2013/4/16/pubmed PY - 2013/11/8/medline SP - 74 EP - 83 JF - Chemosphere JO - Chemosphere VL - 92 IS - 1 N2 - Plant growth promoting bacteria (PGPR) may help reducing the toxicity of heavy metals to plants in polluted environments. In this work the effects of inoculating metal resistant and plant growth promoting bacterial strains on the growth of Helianthus annuus grown in Zn and Cd spiked soils were assessed. The PGPR strains Ralstonia eutropha (B1) and Chrysiobacterium humi (B2) reduced losses of weight in metal exposed plants and induced changes in metal bioaccumulation and bioconcentration - with strain B2 decreasing up to 67% Zn accumulation and by 20% Zn bioconcentration factor (BCF) in the shoots, up to 64% Zn uptake and 38% Zn BCF in the roots, and up to 27% Cd uptake and 27% Cd BCF in plant roots. The impact of inoculation on the bacterial communities in the rhizosphere of the plant was also assessed. Bacterial community diversity decreased with increasing levels of metal contamination in the soil, but in rhizosphere soil of plants inoculated with the PGPR strains, a higher bacterial diversity was kept throughout the experimental period. Inoculation of sunflower, particularly with C. humi (B2), appears to be an effective way of enhancing the short term stabilization potential of the plant in metal contaminated land, lowering losses in plant biomass and decreasing aboveground tissue contamination. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/23582407/Inoculating_Helianthus_annuus__sunflower__grown_in_zinc_and_cadmium_contaminated_soils_with_plant_growth_promoting_bacteria__effects_on_phytoremediation_strategies_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(13)00363-9 DB - PRIME DP - Unbound Medicine ER -