Trace elements present in airborne particulate matter--stressors of plant metabolism
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
22212345
DOI
10.1016/j.ecoenv.2011.12.009
PII: S0147-6513(11)00466-0
Knihovny.cz E-resources
- MeSH
- Biomass MeSH
- Nitrates metabolism MeSH
- Nitrogen metabolism MeSH
- Photosynthesis drug effects MeSH
- Stress, Physiological MeSH
- Plant Physiological Phenomena drug effects MeSH
- Soil Pollutants analysis toxicity MeSH
- Air Pollutants analysis toxicity MeSH
- Plant Leaves drug effects metabolism MeSH
- Particulate Matter analysis toxicity MeSH
- Soil chemistry MeSH
- Plants drug effects metabolism MeSH
- Lactuca metabolism MeSH
- Trace Elements analysis toxicity MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Nitrates MeSH
- Nitrogen MeSH
- Soil Pollutants MeSH
- Air Pollutants MeSH
- Particulate Matter MeSH
- Soil MeSH
- Trace Elements MeSH
Changes of amino acid concentrations (glutamic acid, glutamine, asparagine, aspartate, proline, tryptophan, alanine, glycine, valine and serine), gas-exchange parameters (net photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO(2) concentration) and nitrate levels in Lactuca serriola L. under airborne particulate matter (PM) contamination reported here reveal their role in plant chronic stress adaptation. Results of the pot experiment confirmed the toxic effect of trace elements present in PM for lettuce. PM applied to soil or on the lettuce leaves were associated with the strong inhibition of above-ground biomass and with the enhancement of plant trace element contents. The significant changes of amino acid levels and leaf gas-exchange parameters of the plants showed strong linear dependences on PM contamination (R(2)=0.60-0.99). PM application on leaves intensified toxic effect of trace elements (As, Pb, Cr and Cd) originating from PM by shading of the leaf surface. The plant accumulation of nitrate nitrogen after PM contamination confirmed to block nitrate assimilation.
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