Role of ACC-deaminase and/or nitrogen fixing rhizobacteria in growth promotion of wheat (Triticum aestivum L.) under cadmium pollution

Excessive cadmium concentrations in agricultural soils result in minimizing the soil fertility and health which leads to decrease in crop production. Plant growth promoting rhizobacteria (PGPR) are beneficial bacteria, which can protect the plants against many abiotic stresses. Current study aimed t...

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Bibliographic Details
Published in:Environmental earth sciences 2016-02, Vol.75 (3), p.1, Article 267
Main Authors: Hassan, Waseem, Bashir, Safdar, Ali, Farhan, Ijaz, Muhammad, Hussain, Mubshar, David, Julie
Format: Article
Language:English
Subjects:
Abiotic stress
Agricultural land
Bioavailability
Biogeosciences
Cadmium
Carotenoids
Chlorophyll
Crop production
Earth and Environmental Science
Earth Sciences
Environmental Science and Engineering
Geochemistry
Geology
Hydrology/Water Resources
Nitrogen
Original Article
Plant growth
Plant protection
Seedlings
Soil contamination
Soil fertility
Soil microorganisms
Soils
Terrestrial Pollution
Wheat
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Summary:Excessive cadmium concentrations in agricultural soils result in minimizing the soil fertility and health which leads to decrease in crop production. Plant growth promoting rhizobacteria (PGPR) are beneficial bacteria, which can protect the plants against many abiotic stresses. Current study aimed to identify important rhizobacterial strains by using enrichment technique and examine their inoculation effects on the growth and physiological parameters of wheat, under cadmium pollution. Cadmium was added to 3 kg soil in each pot (with 6 seeds/pot) using cadmium chloride at the rate of 0, 50, 100, 150, and 200 mg kg −1 with three replications in completely randomized design. Rhizobacterial isolates performed considerably better under all cadmium levels, i.e. 50–200 mg kg −1 soil, compared to control. Nevertheless, rhizobacterial isolates containing both abilities, i.e. deaminase and nitrogen fixing, e.g. SAN1 had the highest effect and caused a significant ( P  
ISSN:1866-6280
1866-6299
DOI:10.1007/s12665-015-4902-9