Abstract
The role of plant growth-promoting rhizobacteria (PGPR) in phytoremediation strategies in trace element-contaminated soils is not well understood. It is known that these bacteria have many abilities, which characterize them as a special tool in the plant rhizosphere. They stimulate plant root growth directly or indirectly through production of indole-3-acetic acid, siderophores, 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, and defense against soil-borne pathogens. This chapter is a review on the role of PGPR in the management of soils contaminated with trace elements. Special attention is paid to the interactions with plant roots in phytoextraction and phytoimmobilization strategies in contaminated soils. Finally, the ultimate achievements in the efforts to transfer the ACC deaminase gene into plants used in phytoremediation to regulate ethylene level under abiotic stress have been discussed.
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We acknowledge the financial support of Fund “Science investigation” of the Bulgarian Ministry of Education, Youth and Science for the Bulgarian part of the project COST Action FA0905 “Mineral improved crop production for health food and feed.”
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Shilev, S., Naydenov, M., Prieto, M.S., Vassilev, N., Sancho, E.D. (2012). PGPR as Inoculants in Management of Lands Contaminated with Trace Elements. In: Maheshwari, D. (eds) Bacteria in Agrobiology: Stress Management. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23465-1_13
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