Nutritional disorder in Pfaffia glomerata by mercury excess in nutrient solution

Calgaroto, Nicéia Spanholi; Nicoloso, Fernando Teixeira; Pereira, Luciane Belmonte; Cargnelutti, Denise; Antes, Fabiane Goldschmidt; Dressler, Valderi L.

doi:10.1590/0103-8478cr20141733

Cited by 3 publications

(1 citation statement)

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“…These ndings imply that Hg and Zn share a nity for the same transporters (Schaefer et al 2014;Szczuka et al 2015). In plants, the effect of Zn nutrient addition under Hg exposure depends on plant species, soil properties and growth conditions (Calgaroto et al 2016;Debeljak et al 2018). More importantly, AMF are considered as a critical regulator of Zn nutrient uptake via regulating Zn transporters (Ruytinx et al 2020).…”

Section: Introductionmentioning

confidence: 96%

Role of arbuscular mycorrhizal fungi (Rhizophagus irregularis) on mercury tolerance of Medicago truncatula in relation to mercury and zinc concentration

Rasche

Sommer

Martin

et al. 2022

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Mercury (Hg) pollution of soils is a critical environmental problem. To rehabilitate Hg contaminated soils, arbuscular mycorrhizal fungi (AMF)-based phytoremediation may be supportive, yet the functional potential of AMF in response to Hg exposure is unclear. In a greenhouse experiment, we assessed the response of Medicago truncatula (biomass, Hg tolerance index (TI), Hg partitioning) to different Hg concentrations [0 (Hg0), 25 (Hg25), 50 (Hg50) µg g-1] in treatments with (AM) and without (NM) inoculation of the AMF Rhizophagus irregularis. Additionally, zinc (Zn) uptake and the expression of two Zn transporter genes (MtZIP2, MTZIP6) were examined, because Hg and Zn share the same outer electronic configuration, inferring a potential competition for the same transporters. Although AM plants revealed lower biomass than NM plants, they showed a higher Hg TI. Plant roots were identified as dominant Hg reservoirs. At Hg25, R. irregularis decreased the Hg translocation from roots to stems, while Hg translocation was increased at Hg50. Hg in leaves originated mainly from atmospheric uptake. A lower Hg concentration in leaves of AM than NM plants was found, indicating a regulatory effect of R. irregularis on stomata functioning. The negative relationship between Hg and Zn concentrations in the roots of AM and NM plants implied a potential competition for the same transporters, although the expression of Zn transporters was upregulated by AMF inoculation at all Hg levels. In conclusion, this baseline study demonstrated that R. irregularis contributed to Hg tolerance of M. truncatula, suggesting the potential of R. irregularis for Hg-contaminated phytoremediation.

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Section: Introductionmentioning

confidence: 96%

Role of arbuscular mycorrhizal fungi (Rhizophagus irregularis) on mercury tolerance of Medicago truncatula in relation to mercury and zinc concentration

Rasche

Sommer

Martin

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

The role of arbuscular mycorrhiza in mercury and mineral nutrient uptake in maize

et al. 2018

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Plants’ genetic variation approach applied to zinc contamination: secondary metabolites and enzymes of the antioxidant system in Pfaffia glomerata accessions

et al. 2020

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Nutritional disorder in Pfaffia glomerata by mercury excess in nutrient solution

Abstract: The mineral nutritional homeostasis in response to different concentrations of Hg (0, 25 and 50μM)

Cited by 3 publications

References 20 publications

Role of arbuscular mycorrhizal fungi (Rhizophagus irregularis) on mercury tolerance of Medicago truncatula in relation to mercury and zinc concentration

Role of arbuscular mycorrhizal fungi (Rhizophagus irregularis) on mercury tolerance of Medicago truncatula in relation to mercury and zinc concentration

The role of arbuscular mycorrhiza in mercury and mineral nutrient uptake in maize

Plants’ genetic variation approach applied to zinc contamination: secondary metabolites and enzymes of the antioxidant system in Pfaffia glomerata accessions

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