2021/04/29 by Sterckeman, Thibault, Gossiaux, Lucas, Guimont, Sophie +2
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paper · doi:10.15454/rje8-3254
Chronic overexposure of populations to Cd in vegetal foods must be reduced. Phytoextraction is currently the only solution to decontaminate huge areas of farmland that are contaminated by this metal. To implement it, we have a plant with an exceptional bioconcentration capacity, the hyperaccumulator Noccaea caerulescens, for which the improvement of useful traits, particularly its biomass production, has been shown. Reasonable simulations indicated the efficiency of phytoextraction as an intermediate fall crop. The study allowed a first definition of the necessary ideotypes. Existing or proposed processes suggest that with adaptations, the biomass of the hyperaccumulator could be used to produce energy or materials, which would reduce the cost of soil remediation. However, there are still many scientific and technological obstacles to overcome to reach this solution: Creation of cultivars with high biomass production, the seeds of which could be produced at an acceptable cost; Development of a treatment sector that would use the biomass from phytoextraction cultures; Designing of agricultural practices allowing the insertion of phytoextraction in field cropping.