Effect of metal toxicity on plant growth and metabolism: I. Zinc

By G. R. Rout, P. Das. 2003

488 citations recorded by the source corpus.

Zinc toxicity and problems with regard to tolerance and ecological significance are briefly discussed. Differential tolerance of plant genotypes exposed to zinc toxicity is a promising approach to enrich our understanding of zinc tolerance in plants. Knowledge concerning the physiology and biochemistry with regard to phytotoxicity, uptake and transport of zinc and tolerance and its characterization are also discussed. The cytotoxic effects of zinc on plants are elucidated. The major change was seen in the nucleus of the root tip cells due to zinc toxicity. The chromatin material was highly condensed and some of the cortical cells showed disruption and dilation of nuclear membrane in presence of 7.5 mM zinc. The cytoplasm became structureless, disintegration of cell organelles and the development of vacuoles were also observed. The number of nucleoli also increased in response to zinc resulting in the synthesis of new protein involved in heavy metal tolerance. This review may help in interdisciplinary studies to assess the ecological significance of metal stress.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/462a82551300bd6ba0c5d02dd19047a60b8ea7d4

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In Plant Science

1. M. S. Khan
2. A. Zaidi
3. Mohammad Oves
4. P. A. Wani
5. M. Ashraf
6. Sandeep Singh
7. Nand K. Singh
8. N. Garg

Citations in the corpus

• Structural, physiological, and biochemical profiling of tea plantlets under zinc stress (2013, background): “Alternatively, under excess supply of Zn, the chromatin materials condensed, nuclear membrane of cortical cells disrupted, cytoplasm as well as cell organelles disintegrated, vacuoles developed, and number of nucleolus increased (Rout and Das 2003).”
• Arbuscular Mycorrhiza Rhizophagus irregularis and Silicon Modulate Growth, Proline Biosynthesis and Yield in Cajanus cajan L. Millsp. (pigeonpea) Genotypes Under Cadmium and Zinc Stress (2018, background): “Zinc interferes at the loading site of roots and decreases the rate of translocation or absorption of essential nutrients to plants which causes mineral imbalances (Rout and Das 2003).”
• Zinc oxide nanoparticles: a review of their biological synthesis, antimicrobial activity, uptake, translocation and biotransformation in plants (2017, background): “Zinc being essential micronutrient plays an important role in many integralmetabolic processes [4].”
• Role of plant growth promoting rhizobacteria in the remediation of metal contaminated soils (2009, background): “In soils heavily contaminated with metals, plants suffer various injuries leading to the death of the plants (Rout and Das, 2003; Wani et al., 2006) by inactivation of photosynthesis (Wani et al.”
• Formation of Zn-Ca phyllomanganate nanoparticles in grass roots (2008, unknown): “2 – Rout and Das, 2003).”
• Heavy metals accumulation in plants growing in ex tin mining catchment (2011, background): “Plants growing on soils with higher metal value, exhibit characteristics of unhealthy growth (Rout and Das, 2003).”