TRANSCRIPTIONAL RESPONSES OF SOYBEAN (GLYCINE MAX) AND THALE CRESS (ARABIDOPSIS THALIANA) PLANTS EXPOSED TO DIFFERENT CLASSES OF ENVIRONMENTAL CONTAMINANTS [article]

(:Unkn) Unknown, Benoit Van Aken, University, My
2020
Plants are exposed to various environmental contaminants through irrigation with reclamation water and land application of municipal biosolids. Plants have been shown to take up contaminants from soil and groundwater, and to some extent, metabolize them in their tissues. These mechanisms have potential important implications for the environment and human health. First, as plants constitute the basis of the terrestrial food chain, accumulation of toxic chemicals or their metabolites inside plant
more » ... olites inside plant tissues may lead to contamination of animals and humans. Second, the recognition of the capability of plants to take up and metabolize contaminants has led to the development of a plant-based remediation technology, referred to as phytoremediation. Phytoremediation is defined as the use of higher plants for the removal of environmental contaminants from soil and groundwater. Although phytoremediation is conceptually attractive as a green, environmental-friendly technology, the metabolism of xenobiotic compounds by plants is often slow and incomplete, possibly resulting in the accumulation of toxic pollutants and/or their metabolites inside plant tissues. Without further detoxification, phytoremediation may result in pollution transfer, potentially threatening the food chain, and eventually humans. Gaining further knowledge about the fate of environmental contaminants inside plant tissues is therefore of paramount importance for conducting environmental risk assessment and enhancing the efficiency of phytoremediation applications. It's an attractive concept today to cultivate plants on contaminated lands, in order to combine the benefits of phytoremediation with plant-based biofuel production. Unlike conventional plant bioenergy production, plant biomass grown on marginal contaminated soil will not compete with land for food production. However, the effect of contaminants on the plant biomass and bioenergy feedstock yield have received little attention. Molecular biology techniques, such as high-throughput gene expression a [...]
doi:10.34944/dspace/3075 fatcat:kdipc4rooraphnszjw25xntsaa