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Zinc toxicity in plants: a review
1Department of Botany, Akal University, Bathinda, 151302, Punjab, India.
Planta
|May 27, 2021
Summary
Excess zinc (Zn) in soil harms plants, affecting growth and metabolism. This review details Zn phytotoxicity, uptake, and plant responses to excess Zn, aiding agricultural sustainability.
Area of Science:
- Environmental Science
- Plant Biology
- Biochemistry
Background:
- Zinc (Zn) is essential for plant growth but toxic at high levels.
- Soil Zn contamination arises from natural and anthropogenic sources.
- Understanding Zn essentiality vs. toxicity is crucial for agricultural sustainability.
Purpose of the Study:
- To review recent findings on Zn phytotoxicity in plants.
- To explore Zn uptake, transport, and homeostasis mechanisms.
- To identify plant strategies for coping with Zn stress.
Main Methods:
- Literature review of recent scientific publications.
- Analysis of physiological, biochemical, and molecular data.
- Synthesis of information on Zn homeostasis and toxicity.
Main Results:
- High Zn levels impair plant growth, photosynthesis, and respiration.
- Zn uptake and transport mechanisms are complex and regulated.
- Plants exhibit molecular and physiological adaptations to Zn stress.
Conclusions:
- Zn phytotoxicity significantly impacts plant health and agricultural productivity.
- Further research into Zn homeostasis and tolerance mechanisms is vital.
- Findings support breeding programs for enhanced Zn tolerance in crops.
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