Atmospheric phenanthrene pollution modulates carbon allocation in red clover (Trifolium pratense L.)

Root and foliar uptake, translocation, and distribution of [14C] fluoranthene in pea plants (Pisum sativum)

“…After only 2 h of exposure, 14 C activity was found (except for the contaminated leaf) in the middle part of the stem (the first internodium with leaves) and then in its apical and basal parts. This finding confirms both acropetal and basipetal transport via phloem [39]. Studies devoted to foliar uptake of PAHs and their transport usually consider only the basipetal direction.…”

“…This finding could be connected to transport of compounds arising from possible conjugation of PAH transformation products with endogenous metabolites (e.g., saccharides). Photosynthetic products are preferentially transported from leaves to the primary sink and subsequently to places of intensive growth . This finding is supported particularly by translocation factor values , which express the ratio of 14 C activity in the apical part of both the root and stem to its level in the contaminated leaf (Figure B).…”

Uptake and phytotoxicity of anthracene and benzo[k]fluoranthene applied to the leaves of celery plants (Apium graveolens var. secalinum L.)

“…Research results indicate that exposure to atmospheric PAHs influences plant biomass and physiological processes in plants, such as photosynthesis and transpiration (Huang et al, 1996;Wieczorek and Wieczorek, 2007;Oguntimehin and Sakugawa, 2008;Desalme et al, 2011b;G.J. Ahammed et al, 2012a).…”

“…Ahammed et al, 2012a). Modelbased experiments revealed a decrease in the chlorophyll content of leaves when the above-ground parts of plants were exposed to ANT, benzo[a]pyrene (BaP), benz[a]anthracene (BaA) and phenanthrene (PHE) in the form of aerosol or as air pollution (Huang et al, 1996;Desalme et al, 2011b). The reduction in chlorophyll concentrations was accompanied by reduced biomass yield (Desalme et al, 2011b;G.J.…”

Assessing Ecotoxicity of Aerosol Samples Using Higher Plants as Test Organisms

“…Fumigation chambers have been in use since the 1950's [6]. In these chambers, phytotoxic effect of either individual components such as polyaromatic hydrocarbons (PAHs) can be assessed [7], [8], but model gases can also be used as sample. Simulated diesel exhaust emissions were tested in a solardome fumigation facility on native herbaceous species [9], [10].…”