Cited by 275Plant Micronutrient Interactions and EffectsHeavy metals in environmentTrace Elements in Health

Zinc hyperaccumulation in plants: A review

Open access
Balafrej, Habiba, Bogusz, Didier, Triqui, Zine-El Abidine, Guedira, Abdelkarim, Bendaou, Najib, Smouni, Abdelaziz, Fahr, Mouna·2020·Plants

Abstract

Zinc is an essential microelement involved in many aspects of plant growth and development. Abnormal zinc amounts, mostly due to human activities, can be toxic to flora, fauna, and humans. In plants, excess zinc causes morphological, biochemical, and physiological disorders. Some plants have the ability to resist and even accumulate zinc in their tissues. To date, 28 plant species have been described as zinc hyperaccumulators. These plants display several morphological, physiological, and biochemical adaptations resulting from the activation of molecular Zn hyperaccumulation mechanisms. These adaptations can be varied between species and within populations. In this review, we describe the physiological and biochemical as well as molecular mechanisms involved in zinc hyperaccumulation in plants.

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Crossref · 10.3390/plants9050562

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  • Upon expression profiling of two hyperaccumulators, overexpression of genes occurred, which are involved in Zn/Cd uptake, their loading to xylem, transport, and chelation.

    “Upon expression profiling of two hyperaccumulators, overexpression of genes occurred, which are involved in Zn/Cd uptake, their loading to xylem, transport, and chelation (Balafrej et al., 2020; Sharma et al., 2021a).”

    From Plant hyperaccumulators: a state-of-the-art review on mechanism of heavy metal transport and sequestration (2025) · cites this paper as Balafrej et al., 2020

    Sections 5.1 and 5.2 report elevated expression of Zn-uptake and xylem-loading genes in the two hyperaccumulators, A. halleri and N. caerulescens, and discuss expression of genes involved in Zn chelation and transport. The review does not establish the same full set of uptake, xylem-loading, transport, and chelation findings for Cd; its account of these processes is chiefly about Zn. Page numbers were not available in our copy. (LLM, conf=0.83)

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Authors
Balafrej, H., Bogusz, D., Triqui, Z.-E. A., Guedira, A., Bendaou, N., Smouni, A., & Fahr, M.
Affiliations
  • Mohammed V University (MA)
  • Diversité, adaptation et développement des plantes (FR)
  • Laboratoire de Biotechnologie et Physiologie Végétales, Centre de biotechnologie végétale et microbienne biodiversité et environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Maroc
Corresponding author
  • Balafrej, Habiba
  • Fahr, Mouna
Venue
Plants
Publisher
MDPI AG
Published
2020-04-29
Volume
9
Issue
5
Pages
562
ISSN
2223-7747 (ISSN-L)
OpenAlex
W3023227170
Cited by
275
References
183
Citations by year
2026: 30 · 2025: 40 · 2024: 79 · 2023: 50 · 2022: 38 · 2021: 31 · 2020: 7
FWCI
2.66
Type
journal article
Language
en
Open access
Locations
  • Plants (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • IRD: JEAI - PhytoMet 2018-2020 (0000)
  • Programme Prioritaire de recherche PPR- Ministère de l’Enseignement Supérieur, de la Recherche Scientifique et de la Formation des Cadres (0000)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Micronutrient Interactions and Effects
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
Keywords
zinc hyperaccumulation, zinc toxicity, biochemical adaptation, physiological adaptation, essential micronutrients

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