Acta Univ. Agric. Silvic. Mendelianae Brun. 2011, 59, 303-308
Published online 2014-07-10

Action of plant root exudates in bioremediations: a review

Peter Dundek, Ladislav Holík, Ladislav Hromádko, Tomáš Rohlík, Valerie Vranová, Klement Rejšek, Pavel Formánek

Ústav geologie a pedologie, Mendelova univerzita v Brně, Zemědělská 3, 613 00 Brno, Česká republika

This work presents a summary of literature dealing with the use of plant root exudates in bioremediations. Bioremediation using plants (phytoremediation or rhizoremediation) and associate rhizosphere to decontaminate polluted soil is a method based on the catabolic potential of root-associated microorganisms, which are supported by the organic substrates released from roots. These substrates are called “root exudates”. Root exudates support metabolism of pollutants-decomposing microorganisms in the rhizosphere, and affect sorption / desorption of pollutants. Awareness of exudation rates is necessary for testing soil decontamination. Commonly, water-soluble root exudates of different plants are studied for their qualitative composition which should be related to total carbon of exuded water-soluble compounds. This paper presents the determined rate of plant root exudation and the amount of root exudates carbon used to form artificial rhizosphere.


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