Chromium speciation, bioavailability, uptake, toxicity and detoxification in soil-plant system: A review
| Autor: | Muhammad Shahid, Camille Dumat, Sana Khalid, Nabeel Khan Niazi, Muhammad Rashid, Irshad Bibi, Marina Rafiq, Saliha Shamshad |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Chromium
Environmental Engineering Antioxidant Health Toxicology and Mutagenesis medicine.medical_treatment 0211 other engineering and technologies Biological Availability Plant Development chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Biology Photosynthesis Plant Roots 01 natural sciences Nutrient Metals Heavy medicine Humans Soil Pollutants Environmental Chemistry 0105 earth and related environmental sciences 021110 strategic defence & security studies Chromate conversion coating Poisoning fungi Public Health Environmental and Occupational Health food and beverages General Medicine General Chemistry Plants Pollution Bioavailability Heavy Metal Poisoning chemistry Environmental chemistry Inactivation Metabolic Phytotoxicity |
| Zdroj: | Chemosphere. 178:513-533 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2017.03.074 |
| Popis: | Chromium (Cr) is a potentially toxic heavy metal which does not have any essential metabolic function in plants. Various past and recent studies highlight the biogeochemistry of Cr in the soil-plant system. This review traces a plausible link among Cr speciation, bioavailability, phytouptake, phytotoxicity and detoxification based on available data, especially published from 2010 to 2016. Chromium occurs in different chemical forms (primarily as chromite (Cr(III)) and chromate (Cr(VI)) in soil which vary markedly in term of their biogeochemical behavior. Chromium behavior in soil, its soil-plant transfer and accumulation in different plant parts vary with its chemical form, plant type and soil physico-chemical properties. Soil microbial community plays a key role in governing Cr speciation and behavior in soil. Chromium does not have any specific transporter for its uptake by plants and it primarily enters the plants through specific and non-specific channels of essential ions. Chromium accumulates predominantly in plant root tissues with very limited translocation to shoots. Inside plants, Cr provokes numerous deleterious effects to several physiological, morphological, and biochemical processes. Chromium induces phytotoxicity by interfering plant growth, nutrient uptake and photosynthesis, inducing enhanced generation of reactive oxygen species, causing lipid peroxidation and altering the antioxidant activities. Plants tolerate Cr toxicity via various defense mechanisms such as complexation by organic ligands, compartmentation into the vacuole, and scavenging ROS via antioxidative enzymes. Consumption of Cr-contaminated-food can cause human health risks by inducing severe clinical conditions. Therefore, there is a dire need to monitor biogeochemical behavior of Cr in soil-plant system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect