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Journal of soil science and plant nutrition

versión On-line ISSN 0718-9516

Resumen

SIROHI, G; UPADHYAY, A; SRIVASTAVA, P.S  y  SRIVASTAVA, S. PGPR mediated Zinc biofertilization of soil and its impact on growth and productivity of wheat. J. Soil Sci. Plant Nutr. [online]. 2015, vol.15, n.1, pp.202-216.  Epub 24-Feb-2014. ISSN 0718-9516.  http://dx.doi.org/10.4067/S0718-95162015005000017.

Objectives: This study describes Zinc biofortification of wheat using a rhizospheric isolate, Pseudomonas fluorescens strain Psd. Methods: The strain was used as a bio-ionculant in soil deficient in zinc and the plant-growth promoting potential and biofortification was assessed using a number of physical and biochemical parameters. The enzymatic studies indicated towards the zinc supply mediated by the strain Result: This plant-growth-promoting strain, apart from the Zn accumulation potential, has the ability to solubilise Zn and was also able to leach out Zn from ore-tailings. The application of a Zn-laden biomass of the strain in soil resulted in increased growth and productivity of wheat crop as demonstrated by pot experiments. The beneficial effect was also reflected in increased activities of some enzymes. In addition, grain Zn2+ content was enhanced by ~85% in comparison to wheat grown in Zn2+-deficient soil.

Palabras clave : Biofortification; Zinc; plant-growth-promoting rhizobacteria; biofertilization.

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