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Transgenic tobacco-bearing p-cV-ChMTIIGFP gene accumulated more lead compared to wild type

100%

Eren A., Daghan H.

Polish Journal of Environmental Studies

2014

tom 23

nr 2

Heavy metal pollution, including lead (Pb), is a common global pollution problem. Transgenic (p-cVChMTIIGFP) and non-transgenic (Nicotiana tabacum L. cv Petit Havana SR-1) tobacco plants grown for 6 weeks in pot experiments containing 0, 25, 50, 100, 200, and 400 mg Pb kg·soil⁻¹ were investigated. Lead toxicity symptoms, chlorophyll content, dry weight, and Pb concentration of plants were measured in order to evaluate phytoremediative potential of the plants. Neither plant showed any toxicity symptoms during the growth period. The p-cV-ChMTIIGFP tobacco plant accumulated more Pb (5.6 mg·kg⁻¹) than the wild type tobacco (3.6 mg·kg⁻¹). Therefore, the transgenic p-cV-ChMTIIGFP tobacco has promising potential for reclaiming slightly lead-contaminated soils.

Phytoremediative potential of tobacco under deficit irrigation conditions for Ni-polluted soil

80%

Daghan H., Uygur V., Onder D., Onder S.

Polish Journal of Environmental Studies

2014

tom 23

nr 4

The aim of this study was to investigate the possibility of reclaiming Ni-polluted soils by phytoremediation under deficit irrigation conditions. Tobacco, Nicotiana rustica, was grown for 6 weeks at four different irrigation rates (100, 80, 60, and 40% of irrigation requirement) and four nickel concentrations (0, 50, 100, and 200 mg Ni·kg-1 soil) applied from NiSO4. Nickel toxicity, water stress symptoms, dry shoot biomass, Ni concentration, and Ni uptake were followed. Neither Ni treatment nor water stress-induced Ni toxicity were observed, and there was no treatment-induced difference in chlorophyll content of leaves. With the increasing Ni application, there was a gradual increase in Ni concentration of the shoots from the 40% irrigation through 100% irrigation. As a result, the ability of tobacco to accumulate Ni at high concentration can enable it to be used for phytoremediation of Ni-polluted soils despite the fact that water deficit limits Ni accumulation to some extent.

Ograniczanie wyników

2 Polish Journal of Environmental Studies

2 Daghan H.

1 Eren A.

1 Onder D.

1 Onder S.

1 Uygur V.

2 2014

Wyniki wyszukiwania

Transgenic tobacco-bearing p-cV-ChMTIIGFP gene accumulated more lead compared to wild type

Phytoremediative potential of tobacco under deficit irrigation conditions for Ni-polluted soil