Resistance of different plant species to oil pollution
Yu. V. Savinykh, S. P. Zadorozhnykh, V. S. Ovsyannikova
Institute of Petroleum Chemistry of SB RAS, Тоmsk, Russia
Keywords: soil, oil pollution, remediation, plant test objects, photosynthetic pigments, oil-destructing microorganisms
Abstract
The paper presents data on the effect of hydrocarbon vapors and oil pollution of soil on morphological parameters and the content of the main photosynthetic pigments - chlorophylls and carotenoids - in green parts of plants of different systematic position. Under laboratory experimental conditions, an increase in the content of chlorophylls and carotenoids in the above-ground parts of leafy moss (brium), plants of the umbrella family (chervil and femur) and cereals (foxtail) during growth in the atmosphere of oil vapors and in soil containing 0.75-3.21 % oil was observed. Under field conditions, an increased content of photosynthetic pigments in the leaves of Ledum and fagus was detected, and below background - in the leaves of plantain. Addition of hydrocarbon-oxidizing bacteria (HOB) to the soil with oil increased the concentration of pigments by 30-40 %, indicating an additional stimulating effect of HOB introduction.
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