Publikacje
Influence of lead, chromium and cadmium toxicity on the nutrient uptake by switchgrass and linear regression analyses
„Çelebi Ş.Z., Zorer Ö.S., Yeşilova A. 2022. Influence of lead, chromium and cadmium toxicity on the nutrient uptake by switchgrass and linear regression analyses. J. Elem., 27(4): . DOI: 10.5601/jelem.2022.27.4.2280”
DOI: 10.5601/jelem.2022.27.4.2280
Mining, urban or industrial solid, gas and liquid wastes, pesticide and artificial fertilizer use, paint industry and car exhaust gases cause the release of heavy metals to the nature. This heavy metal stress caused by environmental pollutants limits the growth of plants and reduces product yield and quality. At the same time, heavy metal stress interferes with the uptake, transport and utilization of plant nutrients by plants. This study was performed to evaluate toxicity and tolerance of lead, cadmium and chromium in switchgrass, a plant that can adapt to a wide range of habitats and climates. In order to determine the effects of heavy metals on the nutrient uptake, the switchgrass plant (Panicum virgatum L.) was grown in artificially contaminated soil with different concentrations of Cd, Pb, Cr solutions. The changes in the macro- and micro-nutrient content in switchgrass as affected by the different concentrations of the applied metals were evaluated. Although chromium, cadmium and lead have a phytotoxic effect and are non-essential elements for plants, it was observed that they were easily absorbed and accumulated in the aerial parts of switchgrass. In general, it was found that macro- and micro-nutrient concentrations in switchgrass significantly or relatively decreased in response to the different doses of Pb, Cd and Cr. Only Ca concentrations in the plant increased significantly with the applied different Pb doses, due to the competition of Ca2+ and Pb2+ for entry to the stem cells. The results were interpreted using linear regression and the Pearson correlation.
Słowa kluczowe: lead, cadmium, chromium, mineral nutrient, switchgrass
