Heavy metal pollution causes a number of toxic symptoms both in higher plants and algae, e.g. growth retardation, inhibition of photosynthesis, induction and inhibition of enzymes, generation of oxidative stress. All plants cope with heavy metal stress by exploiting broad range of different response mechanisms acting in additive and/or synergistic way. Most common and important mechanisms comprise synthesis of metal-complexing peptides (glutathione, phytochelatins and related peptides), increased antioxidative enzymatic activity, synthesis of stress proteins (HSP), intracellular metal binding to nonprotein metal chelators like organic acids and phytate, release of extracellular, metal -binding exudates (composed of organic acids, amino acids, peptides, sugars and polysaccharides). Phytochelatins are regarded as potential biomarkers of heavy metal stress in plants.

Response to heavy metals in plants: a molecular approach (chapter 6)

SANITA' di TOPPI, LUIGI;
2003-01-01

Abstract

Heavy metal pollution causes a number of toxic symptoms both in higher plants and algae, e.g. growth retardation, inhibition of photosynthesis, induction and inhibition of enzymes, generation of oxidative stress. All plants cope with heavy metal stress by exploiting broad range of different response mechanisms acting in additive and/or synergistic way. Most common and important mechanisms comprise synthesis of metal-complexing peptides (glutathione, phytochelatins and related peptides), increased antioxidative enzymatic activity, synthesis of stress proteins (HSP), intracellular metal binding to nonprotein metal chelators like organic acids and phytate, release of extracellular, metal -binding exudates (composed of organic acids, amino acids, peptides, sugars and polysaccharides). Phytochelatins are regarded as potential biomarkers of heavy metal stress in plants.
2003
SANITA' di TOPPI, Luigi; Gremigni, P.; PAWLIK SKOWRONSKA, B.; Prasad, M. N. V.; Cobbett, C. S.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/830572
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