Related Experiment Video
Updated: Feb 25, 2026
06:29
A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging
Published on: February 15, 2021
4.0K
Arsenic Hyperaccumulation Strategies: An Overview
Zahra Souri1, Naser Karimi1, Luisa M Sandalio2
1Laboratory of Plant Physiology, Department of Biology, Faculty of Science, Razi UniversityKermanshah, Iran.
Frontiers in Cell and Developmental Biology
|August 4, 2017
Summary
Arsenic hyperaccumulator plants use complex strategies to manage arsenic (As) toxicity. This review details their uptake, transport, and detoxification mechanisms, crucial for environmental remediation.
Area of Science:
- Environmental Science
- Plant Biology
- Biotechnology
Background:
- Arsenic (As) pollution is a growing global environmental threat.
- Phytoremediation using hyperaccumulator plants offers a green technology solution.
- Plants have evolved sophisticated mechanisms to cope with As stress.
Purpose of the Study:
- To review recent advancements in understanding As uptake, translocation, chelation, and detoxification in hyperaccumulator plants.
- To highlight the importance of studying As transport and detoxification mechanisms in detail.
- To update knowledge on plant-based arsenic remediation strategies.
Main Methods:
- Literature review of studies on arsenic hyperaccumulator plants.
- Analysis of molecular and biochemical mechanisms of As tolerance.
- Focus on As uptake, transport, chelation, and detoxification pathways.
Main Results:
- Hyperaccumulator plants form AsIII complexes with GSH and phytochelatins for vacuolar transport.
- Oxidative stress from reactive oxygen species (ROS) is a key As toxicity effect.
- Antioxidative defenses and nitric oxide signaling enhance As tolerance.
Conclusions:
- Understanding As detoxification in hyperaccumulators is vital for effective phytoremediation.
- Further research is needed on the intricate mechanisms of As transport and detoxification.
- Phytoremediation holds significant potential for mitigating arsenic contamination.
Related Concept Videos
01:26Pharmaceutical Poisoning: Treatment Strategies
72
Treatment strategies for poisoning are a critical aspect of emergency medicine, focusing on preventing the absorption of toxins and enhancing their elimination. When a poisoning incident occurs, the first response is to halt exposure and decontaminate the patient, particularly through gastrointestinal (GI) methods if the poison was ingested.Gastrointestinal Decontamination Techniques:Activated charcoal is the cornerstone of GI decontamination. It works through adsorption, binding the toxin to...
72
01:14Prevention of Further Absorption of Poison
1.3K
In cases of acute poisoning, the primary objective is to prevent further absorption of the toxic substance into the body. Immediate interventions using various decontamination techniques targeting the gastrointestinal (GI) tract can achieve this. Decontamination is crucial to prevent poison from entering the systemic circulation, which involves washing affected areas with water and mild soap and removing contaminated clothing. Once external decontamination is done, attention must be turned to...
1.3K
01:26Anticholinesterase Agents: Poisoning and Treatment
1.8K
Anticholinesterases, also known as cholinesterase inhibitors, work by blocking the breakdown of acetylcholine, leading to its accumulation in the synaptic cleft. This accumulation indirectly enhances both muscarinic and nicotinic actions. These agents are classified as reversible or irreversible based on their mechanism of action.
Irreversible agents form a strong bond with the cholinesterase enzyme, making it inactive. The breakdown of the phosphorylated enzyme is...
Irreversible agents form a strong bond with the cholinesterase enzyme, making it inactive. The breakdown of the phosphorylated enzyme is...
1.8K
01:26Enhanced Elimination of Poison
974
Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
974
00:46Bioremediation
22.6K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
22.6K