title: Removal of chromium by some multipurpose tree seedlings of Indian thar desert.
abstract: An experiment was conducted to study the potential of chromium (Cr) phytoaccumulatory capabilities of four tree species viz., Anogeissus latifolia, Terminalia arjuna, Tecomella undulata, and Salvadora persica Possibility of enhancement of Cr uptake by citric acid and vesicular arbuscular mycorrhizal fungi (VAM) amendments were also tried. Cr is a major pollutant of the environment. Chromium can exist in oxidation states from III to VI, but the most stable and common forms of Cr are trivalent and hexavalent species. Cr(VI) was more toxic to the tree growth in terms of collar diameter (CD) increment in all the tree species than Cr(lll). Roots accumulated more Cr than shoots in all the tree species. There was more than 10 fold increase in root Cr content in comparison with shoot Cr content in all the trees at all the concentration of Cr and all sources of Cr. Citric acid significantly increased the Cr content in the tissues of roots in all the species under both speciation of Cr. The highest increase in Cr content brought by 20 mM citric acid addition was in A. latifolia Results suggest that Anogeissus latifolia is a potential Cr accumulator with citric acid as soil amendment.
authors.affiliation: Microbial Biotechnology and Biofertilizer Laboratory, Department of Botany, J N V University, Jodhpur, India.
authors.forename: Nishi
authors.initials: N
authors.lastname: Mathur
authors.forename: Joginder
authors.initials: J
authors.lastname: Singh
authors.forename: Sachendra
authors.initials: S
authors.lastname: Bohra
authors.forename: Avinash
authors.initials: A
authors.lastname: Bohra
authors.forename: Anil
authors.initials: A
authors.lastname: Vyas
mesh_terms: D002274:Carcinogens, Environmental / Q000378:metabolism*; D002857:Chromium / Q000378:metabolism*; D019343:Citric Acid / Q000378:metabolism / Q000494:pharmacology; D003889:Desert Climate; D007194:India; D038821:Mycorrhizae / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D018517:Plant Roots / Q000378:metabolism; D018520:Plant Shoots / Q000378:metabolism; D032121:Salvadoraceae / Q000378:metabolism / Q000382:microbiology; D036226:Seedlings / Q000378:metabolism*; D013045:Species Specificity; D029766:Terminalia / Q000378:metabolism / Q000382:microbiology; D014197:Trees / Q000378:metabolism* / Q000382:microbiology
chemical_list: D002274:Carcinogens, Environmental; D002857:Chromium; D019343:Citric Acid