Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System.
Identifieur interne : 00E322 ( Main/Curation ); précédent : 00E321; suivant : 00E323Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System.
Auteurs : Muhammad Shahid [Pakistan] ; Camille Dumat [France] ; Sana Khalid [Pakistan] ; Nabeel Khan Niazi [Pakistan] ; Paula M C. Antunes [Canada]Source :
- Reviews of environmental contamination and toxicology [ 0179-5953 ]
Descripteurs français
- KwdFr :
- MESH :
- analyse : Cadmium.
- métabolisme : Plantes.
- pharmacocinétique : Cadmium, Polluants du sol.
- toxicité : Cadmium, Polluants du sol.
- Hormèse, Inactivation métabolique, Peroxydation lipidique, Plantes, Stress oxydatif.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Cadmium.
- chemical , pharmacokinetics : Cadmium, Soil Pollutants.
- chemical , toxicity : Cadmium, Soil Pollutants.
- drug effects : Lipid Peroxidation, Oxidative Stress, Plants.
- metabolism : Plants.
- Hormesis, Inactivation, Metabolic.
Abstract
This review summarizes the findings of the most recent studies, published from 2000 to 2016, which focus on the biogeochemical behavior of Cd in soil-plant systems and its impact on the ecosystem. For animals and people not subjected to a Cd-contaminated environment, consumption of Cd contaminated food (vegetables, cereals, pulses and legumes) is the main source of Cd exposure. As Cd does not have any known biological function, and can further cause serious deleterious effects both in plants and mammalian consumers, cycling of Cd within the soil-plant system is of high global relevance.The main source of Cd in soil is that which originates as emissions from various industrial processes. Within soil, Cd occurs in various chemical forms which differ greatly with respect to their lability and phytoavailability. Cadmium has a high phytoaccumulation index because of its low adsorption coefficient and high soil-plant mobility and thereby may enter the food chain. Plant uptake of Cd is believed to occur mainly via roots by specific and non-specific transporters of essential nutrients, as no Cd-specific transporter has yet been identified. Within plants, Cd causes phytotoxicity by decreasing nutrient uptake, inhibiting photosynthesis, plant growth and respiration, inducing lipid peroxidation and altering the antioxidant system and functioning of membranes. Plants tackle Cd toxicity via different defense strategies such as decreased Cd uptake or sequestration into vacuoles. In addition, various antioxidants combat Cd-induced overproduction of ROS. Other mechanisms involve the induction of phytochelatins, glutathione and salicylic acid.
DOI: 10.1007/398_2016_8
PubMed: 27300014
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pubmed:27300014Le document en format XML
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Jaurès-Toulouse II, 5 Allée Antonio Machado, 31058, Toulouse Cedex 9, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. 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For animals and people not subjected to a Cd-contaminated environment, consumption of Cd contaminated food (vegetables, cereals, pulses and legumes) is the main source of Cd exposure. As Cd does not have any known biological function, and can further cause serious deleterious effects both in plants and mammalian consumers, cycling of Cd within the soil-plant system is of high global relevance.The main source of Cd in soil is that which originates as emissions from various industrial processes. Within soil, Cd occurs in various chemical forms which differ greatly with respect to their lability and phytoavailability. Cadmium has a high phytoaccumulation index because of its low adsorption coefficient and high soil-plant mobility and thereby may enter the food chain. Plant uptake of Cd is believed to occur mainly via roots by specific and non-specific transporters of essential nutrients, as no Cd-specific transporter has yet been identified. Within plants, Cd causes phytotoxicity by decreasing nutrient uptake, inhibiting photosynthesis, plant growth and respiration, inducing lipid peroxidation and altering the antioxidant system and functioning of membranes. Plants tackle Cd toxicity via different defense strategies such as decreased Cd uptake or sequestration into vacuoles. In addition, various antioxidants combat Cd-induced overproduction of ROS. Other mechanisms involve the induction of phytochelatins, glutathione and salicylic acid.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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