Simultaneous inhibition of Cd and As absorption and transport in rice via coordinated cell wall sequestration, transporter regulation, and chelating ligand synthesis
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View abstract on PubMed
Summary
This summary is machine-generated.Dicarboxylicdimethylammonium chloride ([Glu][Cl]) effectively reduced cadmium and arsenic accumulation in rice plants. This compound offers a new strategy for safe rice production in heavy metal-contaminated environments.
Area Of Science
- Agricultural Science
- Environmental Science
- Plant Physiology
Background
- Cadmium (Cd) and arsenic (As) contamination in rice poses a significant threat to food security.
- Simultaneous inhibition of Cd and As uptake and transport in rice is a critical challenge.
- Understanding the physiological and molecular mechanisms of mitigation is essential.
Purpose Of The Study
- To investigate the mitigating effects of dicarboxylicdimethylammonium chloride ([Glu][Cl]) on combined Cd and As stress in rice.
- To identify the physiological and molecular mechanisms underlying [Glu][Cl]'s protective effects.
- To evaluate [Glu][Cl] as a strategy for safe rice production.
Main Methods
- Hydroponic experiments were conducted to assess the impact of exogenous [Glu][Cl] on rice seedlings.
- Cd and As accumulation in roots and shoots were quantified.
- Gene expression analysis (OsNramp5, OsGLR3, OsLsi1,2) and quantum chemical calculations were performed.
Main Results
- Exogenous [Glu][Cl] significantly reduced Cd and As accumulation in both roots and shoots of rice seedlings.
- [Glu][Cl] increased the sequestration of Cd and As in the rice cell wall.
- Application of [Glu][Cl] modulated the expression of key genes involved in Cd and As transport (OsNramp5, OsGLR3, OsLsi1,2).
- Quantum chemical calculations supported the chelation of Cd/As by substances whose synthesis was promoted by [Glu][Cl].
Conclusions
- [Glu][Cl] effectively inhibits Cd and As absorption and transport in rice.
- The mechanism involves enhanced cell wall sequestration, regulation of relevant gene expression, and promotion of chelating ligand synthesis.
- [Glu][Cl] presents a promising strategy for safe rice production in contaminated environments.
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