Abstract
It is vital to study the chemical speciation of chromium, an indispensable environmental contaminant in plants to understand its phytoavailability, toxicity and transfer through agricultural food chains and also to exploit plants for phytoremediation. In vitro studies were performed by mixing radiotagged Cr(III) with xylem sap (pure and carboxylic acid fraction) of maize plants (winter crop) at three stages of plant growth. Xylem sap transports both nutrient and non-nutrient ions after absorption by roots to the aerial parts of the plant. Speciation analysis by paper electrophoresis revealed cationic Cr(III) to react with organic ligands, evidently carboxylates to form anionic complexes which were most likely citrate complexes. These mobile and soluble complexes may get stored in leaves and other edible plant parts. This may also be a detoxification mechanism used by plants whereby toxic Cr(VI) may get reduced and then complexed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
