Role of sooty mold fungi in accumulation of fine-particle-associated PAHs and metals on deciduous leaves
| Autor: | John P. Hassett, David J. Nowak, Dana Barbarossa, Venera A. Jouraeva, Natalia A. Shipunova, David L. Johnson |
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| Rok vydání: | 2006 |
| Předmět: |
Air Pollutants
Wax biology Tiliaceae Moho Chemistry Rosaceae Sooty mold Temperature Particle (ecology) biology.organism_classification Biochemistry Plant Leaves Pyrus Deciduous Ascomycota Metals Tilia visual_art Botany visual_art.visual_art_medium Particulate Matter Polycyclic Aromatic Hydrocarbons General Environmental Science |
| Zdroj: | Environmental Research. 102:272-282 |
| ISSN: | 0013-9351 |
| Popis: | The focus of this research was on elucidation of the role of deciduous tree ecosystems in accumulation of fine-particle-associated polycyclic aromatic hydrocarbons (PAHs) and heavy metals on leaves of deciduous trees. The studied species were Tilia x euchlora (frequently infested by sooty mold fungi) and Pyrus calleryana (unaffected by sooty mold fungi). The selected species have similar leaf morphology and were exposed to identical environmental conditions. Intra-species comparison showed that moldy linden leaves accumulate significantly higher amounts of PAHs and metals than unaffected linden leaves. Inter-species comparison revealed that in the absence of sooty mold fungi, physico-chemical properties of epicuticular waxes, rather than the amounts of waxes, might play an important role in accumulation of particulate matter on leaves. The accumulation and/or degradation of a number of high-molecular-weight (HMW) PAHs on leaves was temperature dependent. The results show that the presence of sooty mold fungi on deciduous leaves alters either the accumulation modes and/or degradation pathways of PAHs on deciduous leaves. r 2006 Elsevier Inc. All rights reserved. |
| Databáze: | OpenAIRE |
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