RT Dissertation/Thesis
T1 Role of plant-associated bacteria in the remediation of contaminated soils
A1 Becerra Castro, Cristina
K1 Phytoremediation
K1 Rhizosphere
K1 Heavy metals
K1 Bacterias asociadas a plantas
K1 Hexachlorocyclohexan
AB The global objective of this doctoral thesis consisted in the study and optimisation ofthe plant-soil-microorganism system within phytoremediation strategies for soilscontaminated with organic and inorganic compounds. Phytoremediation can be definedas a group of techniques based on the use of plants and their associated microorganismsfor the clean-up of contaminated soils. In recent years, studies aimed at optimising theefficiency of these techniques have been increasingly more focused on the importanceof the role of plant-associated bacteria in these processes. It is well known that bacteriaare commonly associated with plants, either surface-dwelling (epiphytic bacteria) or inthe plant interior (endophytic bacteria). Exploiting these plant-bacterial associations inthe field of phytoremediation has been centred in two areas. On one hand, theseapproaches use bacterial strains which are capable of influencing the general status ofthe plant, enhancing their establishment and growth in the contaminated soils. This typeof bacteria are denominated as plant growth-promoting bacteria (PGPB) and influenceplant growth via various mechanisms, such as through an increase in nutrientavailability (e.g. nitrogen, iron or phosphorus), or through the synthesis ofphytohormones (e.g. indoleacetic acid, IAA). On the other hand, bacterial strains can beemployed which act directly on the contaminant in question, for example, strainscapable of degrading contaminants (in the case of organic pollutants), or those whichcan modify the bioavailability of contaminants (e.g. through the production ofbiosurfactants), thus affecting contaminant fate and/or absorption by the plant.
YR 2013
FD 2013-02-11
LK http://hdl.handle.net/10347/7273
UL http://hdl.handle.net/10347/7273
LA eng
DS Minerva
RD 24 abr 2026