تلخیص
Extensive use of chromium in tanning and leather industry has created serious concerns for human health and environment. The tannery industry in Pakistan is one of the most developed industry therefore results in discharge of large amount of untreated water in water courses and surrounding soils. The contamination may lead to many phytotoxic effects however certain bacteria may potentially ameliorate the phytotoxic effect of chromium. The present work was designed to check the toxic effects of various concentrations of chromium (ranging from 0 to 100 mg/l of Cr) on growth of Triticum aestivum in multiple sets of experiments. The reduction in phytotoxicity through bacterial inoculation was also assessed in the study. The growth parameters such as shoot length, root length, shoot fresh and dry weights were recorded. It was observed that the increasing concentration of chromium significantly reduced the plant growth. As the minimum growth in terms of root and shoot length and plant biomass was observed at chromium concentration of 100 mg/l. However the study also revealed that inoculation with plant growth promoting bacteria (CC7+ACC-14) reduced the toxic effects of chromium and significantly promoted root and shoot growth under controlled conditions. Thus it is finally concluded that wastewater containing chromium could potentially be utilized for plants when inoculated with certain plant growth promoting bacteria
Saima Batool Rai, Azeem Khalid, Samia Qadeer, Shahid Mahmood, Irfan Aziz. (2016) Reduction in phytotoxicity of chromium using ACC-deaminase containing bacteria, The Journal Soil & Environment , Volume 35, Issue 2.
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