Comprehensive insights in thallium ecophysiology in the hyperaccumulator Biscutella laevigata

Remigio, Amelia Corzo; Poščić, Filip; Nkrumah, Philip Nti; Edraki, Mansour; Spiers, Kathryn; Brueckner, Dennis; Ent, Antony van der

doi:10.1016/j.scitotenv.2022.155899

Cited by 11 publications

(9 citation statements)

References 66 publications

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“…3 and 4), and are abundant as expected from observations of leaves from European populations (Blair and Wolfe 2004). Similar to the B. laevigata population from Saint-Laurent-le-Minier (Corzo Remigio et al 2022), Tl was not present in Values are concentrations in weight percent (wt%) ± error of analysis (σ uncertainty). LOD denotes the limit of detection (0.1 wt%) the trichomes themselves, but in the trichome bases (Fig.…”

Section: Discussionsupporting

confidence: 59%

“…1), suggesting a stimulatory effect as observed for other toxic elements at low concentrations -a phenomenon known as hormesis (Agathokleous et al 2019;Jalal et al 2021;Salinitro et al 2021). This has also been found in the Tl hyperaccumulator B. laevigata (Corzo Remigio et al 2022). However, with exposure to higher Tl concentrations, some individuals developed necrotic older leaves.…”

Section: Discussionsupporting

confidence: 58%

“…Thallium distribution in hydrated leaves of S. latifolia (Figs. 3 and 4) differs from that of B. laevigata (Corzo Remigio et al 2022). In young leaves, Tl is predominantly localized in the mid-rib and the surrounding vascular bundles, whereas in B. laevigata Tl is localized at the foliar margins.…”

Section: Discussionmentioning

confidence: 83%

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Thallium accumulation and distribution in Silene latifolia (Caryophyllaceae) grown in hydroponics

et al. 2022

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Purpose Thallium (Tl) is one of the most toxic elements known and its contamination is an emerging environmental issue associated with base metal (zinc-lead) mining wastes. This study investigated the nature of Tl tolerance and accumulation in Silene latifolia, which has so far only been reported from field-collected samples. Methods Silene latifolia was grown in hydroponics at different Tl concentrations (0, 2.5, 5, 30 and 60 μM Tl). Elemental analysis with Inductively coupled plasma atomic emission spectroscopy (ICP-AES) and laboratory-based micro-X-ray fluorescence spectroscopy (μ-XRF) were used to determine Tl accumulation and distribution in hydrated organs and tissues. Results This study revealed unusually high Tl concentrations in the shoots of S. latifolia, reaching up to 35,700 μg Tl g−1 in young leaves. The species proved to have exceptionally high levels of Tl tolerance and had a positive growth response when exposed to Tl dose rates of up to 5 μM. Laboratory-based μXRF analysis revealed that Tl is localized mainly at the base of the midrib and in the veins of leaves. This distribution differs greatly from that in other known Tl hyperaccumulators. Conclusions Our findings show that S. latifolia is among the strongest known Tl hyperaccumulators in the world. The species has ostensibly evolved mechanisms to survive excessive concentrations of Tl accumulated in its leaves, whilst maintaining lower Tl concentrations in the roots. This trait is of fundamental importance for developing future phytoextraction technologies using this species to remediate Tl-contaminated mine wastes.

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Section: Discussionsupporting

confidence: 59%

Section: Discussionsupporting

confidence: 58%

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Thallium accumulation and distribution in Silene latifolia (Caryophyllaceae) grown in hydroponics

et al. 2022

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“…Thallium hyperaccumulation is generally a very rare phenomenon and has only been observed in a few taxa belonging to two main groups. In the family Brassicaceae, high Tl concentrations have been observed in species of Iberis and Biscutella in Southern France (LaCoste et al 1999;Leblanc et al 1999;Corzo Remigio et al 2022). High Tl concentrations have also been recorded in Viola species within the borders of the Balkan Peninsula near the Allchar mine on Mount Kožuf in North Macedonia (Bačeva et al 2014).…”

Section: Thallium Hyperaccumulatorsmentioning

confidence: 99%

Hyperaccumulator plant discoveries in the Balkans: Accumulation, distribution, and practical applications

et al. 2022

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Hyperaccumulator plants are able to tolerate extremely high concentrations of metals/metalloids in the soil in which they grow and to accumulate high concentrations in their shoots. To date, a total of 31 hyperaccumulator plant species have been identified in the Balkans, the centre of diversity and speciation in the European flora which is particularly rich in ultramafic areas. A further 8 species have yet to be confirmed through additional studies. Most of the 31 hyperaccumulator taxa (13 taxa or 41.9%) are species of the genus Odontarrhena, all hyperaccumulating Ni, but concentrations of this element above the hyperaccumulation threshold were also found in the genera Bornmuellera and Noccaea (all Brassicaceae), Orobanche (Orobanchaceae), Centaurea (Asteraceae) and Viola (Violaceae). The existence of hyperaccumulators of Tl and Zn is of particular interest because very few species worldwide hyperaccumulate these elements. Multiple metal hyperaccumulation was found in Noccaea kovatsii, as the hyperaccumulation of Zn was found in this species in addition to Ni, the primary accumulated element. Metal hyperaccumulation is discussed in terms of phylogenetic relationships and species distributions, with special attention to their systematics, the detection and recognition of new hyperaccumulating species and the possibilities for their future practical applications in phytotechnologies.

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“…Tl-induced toxicity is commonly a symptom of the replacement of K with Tl [ 44 ]. While in Arabidopsis thaliana Tl and K have antagonistic effects in that they mutually interfere with each other’s absorption [ 45 ], in Biscutella laevigata, increased K does not inhibit the uptake of Tl and, therefore, it seems that the absorption of Tl would not be carried out through the same systems as K, but it will be carried out through specific transporters [ 46 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thallium(I) on Growth, Nutrient Absorption, Photosynthetic Pigments, and Antioxidant Response of Dittrichia Plants

et al. 2023

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Dittrichia plants were exposed to thallium (Tl) stress (10, 50, and 100 µM) for 7 days. The Tl toxicity altered the absorption and accumulation of other nutrients. In both the roots and the leaves, there was a decline in K, Mg, and Fe content, but an increase in Ca, Mn, and Zn. Chlorophylls decreased, as did the photosynthetic efficiency, while carotenoids increased. Oxidative stress in the roots was reflected in increased lipid peroxidation. There was more production of superoxide (O2.−), hydrogen peroxide (H2O2), and nitric oxide (NO) in the roots than in the leaves, with increases in both organs in response to Tl toxicity, except for O2.− production in the roots, which fluctuated. There was increased hydrogen sulfide (H2S) production, especially in the leaves. Superoxide dismutase (SOD), ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), monodehydroascorbate reductase (MDHAR), and glutathione reductase (GR) showed increased activities, except for APX and MDHAR in the roots and GR in the leaves. The components of the ascorbate–glutathione cycle were affected. Thus, ascorbate (AsA) increased, while dehydroascorbate (DHA), reduced glutathione (GSH), and oxidized glutathione (GSSG) decreased, except for in the roots at 100 µM Tl, which showed increased GSH. These Tl toxicity-induced alterations modify the AsA/DHA and GSH/GSSG redox status. The NO and H2S interaction may act by activating the antioxidant system. The effects of Tl could be related to its strong affinity for binding with -SH groups, thus altering the functionality of proteins and the cellular redox state.

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Comprehensive insights in thallium ecophysiology in the hyperaccumulator Biscutella laevigata

Cited by 11 publications

References 66 publications

Thallium accumulation and distribution in Silene latifolia (Caryophyllaceae) grown in hydroponics

Thallium accumulation and distribution in Silene latifolia (Caryophyllaceae) grown in hydroponics

Hyperaccumulator plant discoveries in the Balkans: Accumulation, distribution, and practical applications

Effect of Thallium(I) on Growth, Nutrient Absorption, Photosynthetic Pigments, and Antioxidant Response of Dittrichia Plants

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