Black locust and white poplar ecophysiological adaptations to pollution stress at the fly ash deposits of the ‘Nikola Tesla – A’ thermoelectric plant (Obrenovac, Serbia)
2015
Аутори:
Kostić, OlgaMitrović, Miroslava
Jarić, Snežana
Đurđević, Lola
Gajić, Gordana
Pavlović, Dragana
Matić, Marija
Pavlović, Pavle
Остала ауторства
Uzelac, BrankaТип документа:
Конференцијски прилог (Објављена верзија)
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© 2015 by the Serbian Plant Physiology Society
Метаподаци
Приказ свих података о документуАпстракт:
The ecophysiological traits of two woody species, Robinia pseudoacacia L. (planted) and Populus alba L. (naturally colonized), were assessed in terms of trace element (As, B) accumulation, photosynthetic efficiency (Fv/Fm), total chlorophyll (Chla+b) and carotenoid (Tot Carot) content, and MDA levels in populations grow-ing at the ‘Nikola Tesla – A’ thermoelectric power plant’s fly ash ponds, weathered for 3 (L1) and 11 years (L2), compared to their natural habitat. Research showed that the trace element content in leaves of both species at the ash deposits was higher compared to plants from the reference site (p<0.001). Despite decreasing as ash aged, the B content in leaves of both species at both ponds was at toxic levels for plants. As ash age in-creased, so did As concentrations in both species, with levels in white poplar leaves at L2 and black locust leaves at L1 and L2 being in the toxic range. In such conditions, white poplar exhibited stable photosynthet-ic efficiency at both ponds due to the stable photosynthetic pigment content and the functional integrity of cell membranes. At L2, symptoms of oxidative stress in black locust manifested in the form of reduced Fv/Fm (p<0.001), elevated levels of lipid peroxidation (p<0.05), and lower levels of chlorophyll and total carotenoids (p<0.001) compared to plants at the reference site. The results show that white poplar exhibited higher adap-tive potential at L1 and L2, while black locust had reduced adaptive potential to the stressful conditions on the weathered ash at L2 of the ‘TENT-A’ ash deposit site.
Кључне речи:
fly ash; Robinia pseudoacacia L.; Populus alba L.; pollutants; adaptationsФинансирање / пројекти:
- Екофизиолошке адаптивне стратегије биљака у условима мултипног стреса (RS-MESTD-Basic Research (BR or ON)-173018)
У:
- Uzelac B, editor. Book of Abstracts: 2nd International Conference on Plant Biology, 21th Symposium of the Serbian Plant Physiology Society, and CОST Action FA1106 Quality Fruit Workshop; 2015 Jun 17-20; Petnica, Serbia. Belgrade: Serbian Plant Physiology Society: Institute for Biological Research “Siniša Stanković”; 2015. p. 168.