A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Inhibitory effects of polycyclic aromatic hydrocarbons (PAHs) on photosynthetic performance are not related to their aromaticity




TekijätAnjana Jajoo, Nageswara Rao Mekala, Rupal Singh Tomar, Michele Grieco, Mikko Tikkanen, Eva-Mari Aro

KustantajaELSEVIER SCIENCE SA

KustannuspaikkaLAUSANNE; PO BOX 564, 1001 LAUSANNE, SWITZERLAND

Julkaisuvuosi2014

JournalJournal of Photochemistry and Photobiology B: Biology

Tietokannassa oleva lehden nimiJOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY

Lehden akronyymiJ PHOTOCH PHOTOBIO B

Vuosikerta137

Aloitussivu151

Lopetussivu155

Sivujen määrä5

ISSN1011-1344

DOIhttps://doi.org/10.1016/j.jphotobiol.2014.03.011


Tiivistelmä

Polycyclic aromatic hydrocarbons (PAHs) are very toxic and highly persistent environmental pollutants which accumulate in soil and affect growth of the plants adversely. This study aims to investigate inhibitory effects of 3 major PAH particularly on photosynthetic processes in Arabidopsis thaliana grown in soil treated with PAH. The 3 PAH chosen differ from each other in aromaticity (number of rings) comprising their structure (2 rings: naphthalene, 3 rings: anthracene and 4 rings: pyrene). Several growth parameters and Chlorophyll a fluorescence was monitored in PAH treated plants. BN-PAGe analysis was done in order to get information about change in the protein conformation. PAH treatment led to increased value of Fo which collaborated with increase in the amount of free LHC as seen through EN-Page analysis. Thus PAH were found to inhibit PS II photochemistry and caused distinct change in pigment composition. However the results led us to infer that 3-ring anthracence is more inhibitory as compared to 2-ring naphthalene and 4-ring pyrene. This indicates that aromaticity of PAH is unrelated to their response on photosynthetic processes. (C) 2014 Elsevier B.V. All rights reserved.




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