Response of canary grass (Phalaroides arundinacea) to soil contaminated with oil | Реакция корневищного злака Phalaroides arundinacea на загрязнение почвы нефтью
2010
Maslova, S.P. | Tabalenkova, G.N., Russian Academy of Sciences, Syktyvkar (Russian Federation). Komi Science Centre. Inst. of Biology
The effect of soil pollution by petroleum on growth, resistance and physiological and biochemical parameters of Phalaroides arundinaceae (PA) was studied in the Komi Republic. A decrease of contents of chlorophylls, carotenoids, total nitrogen, amino acids was detected in the organs of PA under the influence of oil pollution. Effects of pollutants on components of the antioxidant system of leaves and rhizomes was different. Accumulation of lipid peroxidation products and a decrease of peroxidase activity processed, indicating a damage of cell membranes and destruction of photosynthetic pigments. The rhizomes, in contrast to the leaves, did not have a strong oxidative stress, as evidenced by absence of changes in a content of malondialdehyde and by raised peroxidase activity. It was assumed that the rhizomes of PA had a better antiradical protection compared with the leaves. Pollution of soil by petroleum did not have a significant impact on morphological parameters and biomass accumulation of PA. At 5% level of pollution stimulation of root growth was observed, that could be a result of the impact of petroleum biodegradation by microorganisms. The received results have shown a stability of PA to high levels of pollution by petroleum and allow to recommend this species for remediation of soils polluted by petroleum.
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