The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

Dorina Podar; Frans J. M. Maathuis

doi:10.1111/pce.14188

journal article Oct 07, 2021

The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

Dorina Podar

Frans J. M. Maathuis

Plant, Cell & Environment Vol. 45 No. 3 pp. 719-736 · Wiley

View at Publisher Save 10.1111/pce.14188

Abstract

AbstractHuman activity and natural processes have led to the widespread dissemination of metals and metalloids, many of which are toxic and have a negative impact on plant growth and development. Roots, as the first point of contact, are essential in endowing plants with tolerance to excess metal(loid) in the soil. The most important root processes that contribute to tolerance are: adaptation of transport processes that affect uptake efflux and long‐distance transport of metal(loid)s; metal(loid) detoxification within root cells via conjugation to thiol rich compounds and subsequent sequestration in the vacuole; plasticity in root architecture; the presence of bacteria and fungi in the rhizosphere that impact on metal(loid) bioavailability; the role of root exudates. In this review, we provide details on these processes and assess their relevance on the detoxification of arsenic, cadmium, mercury and zinc in crops. Furthermore, we assess which of these strategies have been tested in field conditions and whether they are effective in terms of improving crop metal(loid) tolerance.

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Citations

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References

Details

Published: Oct 07, 2021
Vol/Issue: 45(3)
Pages: 719-736
License: View

Authors

D

Dorina Podar

Department of Molecular Biology and Biotechnology, Faculty of Biology‐Geology Babeș‐Bolyai University Cluj Romania

F

Frans J. M. Maathuis

Biology Department University of York York UK

Cite This Article

Dorina Podar, Frans J. M. Maathuis (2021). The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids. Plant, Cell & Environment, 45(3), 719-736. https://doi.org/10.1111/pce.14188

The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

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