1. Arsenic- and mercury-induced phytotoxicity in the Mediterranean shrubs Pistacia lentiscus and Tamarix gallica grown in hydroponic culture.
- Author
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Moreno-Jiménez E, Esteban E, Carpena-Ruiz RO, and Peñalosa JM
- Subjects
- Arsenic metabolism, Chlorophyll metabolism, Lipid Peroxidation drug effects, Manganese metabolism, Mercury metabolism, Phosphorus metabolism, Pistacia growth & development, Pistacia metabolism, Plant Roots drug effects, Plant Roots metabolism, Plant Shoots drug effects, Plant Shoots metabolism, Stress, Physiological, Tamaricaceae growth & development, Tamaricaceae metabolism, Arsenic toxicity, Mercury toxicity, Pistacia drug effects, Tamaricaceae drug effects, Water Pollutants, Chemical toxicity
- Abstract
Hg and As resistance and bioaccumulation were studied in hydroponically grown Pistacia lentiscus and Tamarix gallica plants. Both elements caused growth inhibition in roots and shoots, with mercury showing greater phytotoxicity than arsenic. Accumulation of both elements by plants increased in response to element supply, with the greatest uptake found in T. gallica. Both elements affected P and Mn status in plants, reduced chlorophyll a concentration and increased MDA and thiol levels. These stress indices showed good correlations with As and Hg concentration in plant tissues, especially in the roots. Toxic responses to mercury were more evident than for arsenic, especially in shoot tissues. T. gallica showed higher resistance to both Hg and As than P. lentiscus, as well accumulating more As and Hg.
- Published
- 2009
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