Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 122, Issue -, Pages 31-36Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2015.07.002
Keywords
Fluoranthene; Photomodified fluoranthene; Polycyclic aromatic hydrocarbon; Wheat
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Funding
- Department of Science and Technology (DST), India under Assured Opportunity for Research Careers (AORC) [IF-120412]
- DST [DST/RUS/RFBR/P-173]
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Polycyclic aromatic hydrocarbons (PAHs) are toxic to plants. Exposure of PAHs to sunlight can result in the formation of photomodified PAHs, which are generally more toxic than the parent compounds. In the present study, biochemical and physiological effects of intact fluoranthene (FLT) and photomodified FLT (P.FLT) in wheat were investigated. Our results demonstrated that the treatment of FLT and P.FLT, inhibited germination, seedling growth and pigment content. However, inhibition observed on primary photochemistry and photosystem II heterogeneity was more prominent in P.FLT treated plants. Both FLT and P.FLT affected the levels of antioxidant enzymes such as POD, SOD, CAT and GR to similar extent. Greater inhibitory effects of P.FLT than FLT may be ascribed to its effects on growth parameters and photochemistry rather than on the activities of various antioxidant enzymes. (C) 2015 Elsevier Inc. All rights reserved.
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