An assessment of heavy metal remediation potential of Lawsonia inermis L. from iron ore tailings

    The present study aimed at studying the growth and physiological response of L. inermis on iron ore tailings. Pot experiments were conducted to investigate the effect of iron ore tailings both individually as well as in combination with soil (at different proportions) on the growth, pigment production as well as accumulation and translocation of various heavy metals from the tailings. The results suggested a decrease in the growth and chlorophyll content but increase in the carotenoids as well as metal accumulation capacity of L.inermis with increasing proportion of tailings in the soil. Furthermore, an increase in antioxidant (Carotenoids, Catalase, Peroxidase and Super Oxide Dismutase) activities in plants grown on tailings as compared to control was observed which suggests plant efficiency to overcome any stress generated due to excess of heavy metals. The order of accumulation of various heavy metals in the plant parts was observed to be Cr>Cu>Fe> Zn> Pb>Ni. However, the hundred percent survival rates of all the plants in all the treatments suggest its efficiency to survive metal stress. Thus the plant can be used for the reclamation of moderately contaminate areas. ÂÂ

Effect of chelating agents and metal ions on nickel bioavailability and chlorophyll fluorescence response in wheat- An approach for attenuation of Ni stress

The objectives of the study are to analyze the physiological changes, biochemical alterations and attenuation of nickel toxicity effects in wheat seedlings under combined applications of Ni ions, metal chelators (EDTA/Citric Acid) and metal ions (Zn2+ /Mg2+). Wheat (Triticum aestivum L cv UP262) seedlings were grown hydroponically using different concentrations of Ni up to 7 days along with chelators and metal ions for study. The seedling growth was maximum with NiCl2–Zn2+ (100μM) and minimum with NiCl2–EDTA (100μM) treatments. Total chlorophyll content was maximum in the seedlings treated with NiCl2-Zn2+ (100μM) and minimum in NiCl2-EDTA (100μM) treatments. NiCl2–EDTA (100μM) showed less Fo and Fm values and therefore, a trend in the decrease in OJIP transient indicates the maximum alteration of photochemical activity of PS-II in presence of NiCl2–EDTA (100μM) treatment. Similar observation was found by NiCl2 –EDTA (200μM) treatment where Fo and Fm values were noted to decline. High nickel content in roots of the seedlings was noted as compared to shoots

sj-docx-1-ijs-10.1177_10668969241246463 - Supplemental material for Iron-Associated Mucosal Changes: A Potentially Under Recognized Entity in Upper Gastrointestinal Endoscopic Biopsies

Supplemental material, sj-docx-1-ijs-10.1177_10668969241246463 for Iron-Associated Mucosal Changes: A Potentially Under Recognized Entity in Upper Gastrointestinal Endoscopic Biopsies by Susama Patra, Ajit Sahu, Somanath Padhi, Hemanta Kumar Nayak and Subash Chandra Samal in International Journal of Surgical Pathology</p