engleski

Physiological response of dandelion (Taraxacum officinale Weber) to environmental factors in urban areas

In urban areas plants are most often exposed to various abiotic stress factors. Dandelion (Taraxacum officinal Weber) is a very abundant species which can grow in urban areas. In this study we collected samples from 30 locations in city of Osijek which included traffic zones and parks (polluted and less polluted locations). Analyses included total chlorophylls, carotenoid, polyphenols and ascorbic acid content as well as antioxidant capacity measured by FRAP (Ferric Reducing Antioxidant Power) and iRAC (Iron (III) Reducing Antioxidant Capacity) assays. Results showed decrease in all measured biochemical parameters and antioxidant capacity in dandelion plants growing on/near traffic locations in comparison to less polluted locations such as parks and meadows. Observed results suggest suppression of metabolic processes and higher sensitivity to ecological stress in dandelion plants exposed to traffic zones. Results of this work will contribute to the understanding of physiological and biochemical responses of dandelion to environmental stress and its role as a bioindicator of environmental pollution in urban areas.

abiotic stress, pollution, dandelion, antioxidant capacity

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