Abstract
The effect of inoculation with Pseudomonas brassicacearum Am3, Pseudomonas marginalis Dp1 and Rhodococcus sp. Fp2 containing 1-aminocyclopropane-1-carboxylate deaminase (ACCD) on growth and uptake of N, P, K, Ca, S, Fe and Cd in shoots of pea (Pisum sativum) genotypes VIR188, VIR1658, VIR3429 and VIR4488 was studied in pot experiment with non-polluted and Cd-supplemented (10 mg Cd kg−1) sod-podzolic soil. The growth-promoting effect of bacteria depended on plant genotype and bacterial strain. Only Rhodococcus sp. Fp2 had no ACCD activity in vitro in the presence of Cd and did not stimulate pea growth in Cd-supplemented soil. Inoculation with bacteria counteracted the Cd-induced inhibition of nutrient uptake by plants probably through stimulation of root growth and enhancement of nutrient uptake processes. Nutritional effects of the bacteria were specific with respect to the nutrient.
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Acknowledgements
The authors are grateful to Ms. N.L. Yablunina for determination of total N in plants and to Dr. I.C. Dodd for critical reading of this manuscript. This work was supported by the EU-RTD INCO Copernicus (project IC15-CT 98-0116).
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Safronova, V.I., Stepanok, V.V., Engqvist, G.L. et al. Root-associated bacteria containing 1-aminocyclopropane-1-carboxylate deaminase improve growth and nutrient uptake by pea genotypes cultivated in cadmium supplemented soil. Biol Fertil Soils 42, 267–272 (2006). https://doi.org/10.1007/s00374-005-0024-y
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DOI: https://doi.org/10.1007/s00374-005-0024-y