How does NaCl improve tolerance to cadmium in the halophyte Sesuvium portulacastrum ?

Wali, Mariem; Kilani, Ben Rjab; Gunsè, Benet; Abdelbasset, Lakdhar; Lutts, Stanley; Poschenrieder, Charlotte; Abdelly, Chédly; Ghnaya, Tahar

doi:10.1016/j.chemosphere.2014.07.041

Cited by 71 publications

(38 citation statements)

References 40 publications

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“…In the present study, both vetiver species were not suitable for phytoextraction due to their comparatively high BCF but low TF values with increasing Cd concentrations under salinity. Although many researchers reported high salinity which could enhance the heavy metal translocation from roots to shoots of halophyte species (Ghnaya et al, 2007;Han et al, 2012b;Mariem et al, 2014). However, Vetiveria spp.…”

Section: Figmentioning

confidence: 99%

Phytoremediation and Accumulation of Cadmium from Contaminated Saline Soils by Vetiver Grass

Jampasri

Saeng-ngam

2019

Environmental Control in Biology

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A soil-culture study was conducted to investigate the phytoextraction of cadmium (Cd) (20, 60, and 100 mg/kg) in two species of upland and lowland vetiver grass (Vetiveria nemoralis and V. zizanioides) with salinity levels of 1,000 mg/kg NaCl salt for 2 months. The two species of grass were highly tolerant to Cd and salt with little adverse effect on growth. Cd and salt treatments imposed significant negative effects on root length, shoot height and total dry biomass. Cd accumulation in the roots and shoots all increased significantly with increasing Cd concentration. The combined treatments of Cd and salt showed the highest root Cd accumulation in V. nemoralis (226 862 mg/kg) at Cd concentrations ranging from 20 to 100 mg/kg. Salt did not affect the accumulation of Cd but decreased the root-to-shoot Cd translocation. This was confirmed by the bioconcentration factor in root Ͼ 1 and the translocation factor Ͻ 1, which indicated the plant's suitability for phytostabilization of Cd under saline conditions. The experiment pointed out that V. nemoralis was a better accumulator of Cd than V. zizanioides.

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Section: Figmentioning

confidence: 99%

Phytoremediation and Accumulation of Cadmium from Contaminated Saline Soils by Vetiver Grass

Jampasri

Saeng-ngam

2019

Environmental Control in Biology

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“…This group of plants includes species adapted to high salinity. Recent studies revealed that the mechanisms enabling plant growth under salt stress ameliorate also plant response to other abiotic stresses, including heavy metal treatment (Mariem et al 2014 ; Taamalli et al 2014 ; Guo et al 2017 ). Metalothionein gene IlMt2a was successfully identified and characterized in a halophyte Iris lactea var.…”

Section: Strategies For Improved Efficiency Of Phytoremediationmentioning

confidence: 99%

Recent strategies of increasing metal tolerance and phytoremediation potential using genetic transformation of plants

Koźmińska

Wiszniewska

Hanus-Fajerska

et al. 2018

Plant Biotechnol Rep

145

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Avoidance and reduction of soil contamination with heavy metals is one of the most serious global challenges. Nowadays, science offers us new opportunities of utilizing plants to extract toxic elements from the soil by means of phytoremediation. Plant abilities to uptake, translocate, and transform heavy metals, as well as to limit their toxicity, may be significantly enhanced via genetic engineering. This paper provides a comprehensive review of recent strategies aimed at the improvement of plant phytoremediation potential using plant transformation and employing current achievements in nuclear and cytoplasmic genome transformation. Strategies for obtaining plants suitable for effective soil clean-up and tolerant to excessive concentrations of heavy metals are critically assessed. Promising directions in genetic manipulations, such as gene silencing and cis- and intragenesis, are also discussed. Moreover, the ways of overcoming disadvantages of phytoremediation using genetic transformation approachare proposed. The knowledge gathered here could be useful for designing new research aimed at biotechnological improvement of phytoremediation efficiency.

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“…The predialysis plasma sodium gradient (DPNa + ) changes with the environmental NaCl and contributes to cell activities. It regulates the internal solute concentration, peritrichous flagella development and swimming ability, and promotes protective immune responses such as Hsp60, and tolerance to heavy metals such as cadmium (Ulitzur, 1975;Unemoto and Hayashi, 1979;Xu et al, 2004;Yang et al, 2013;Mariem et al, 2014). However, information regarding the relationship between antibiotic resistance and NaCl concentration is not available in the slightly halophilic marine bacteria that are significant in marine aquaculture and human health.…”

Section: Introductionmentioning

confidence: 99%

NaCl promotes antibiotic resistance by reducing redox states in Vibrio alginolyticus

Yang

Zeng

Yang

et al. 2018

Environmental Microbiology

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Summary The development of antibiotic resistance in Vibrio alginolyticus represents a threat to human health and fish farming. Environmental NaCl regulation of bacterial physiology is well documented, but whether the regulation contributes to antibiotic resistance remains unknown. To explore this, we compared minimum inhibitory concentration (MIC) of V. alginolyticus cultured in different media with 0.5%–10% NaCl, and found that the MIC increased as the NaCl concentration increased, especially for aminoglycoside antibiotics. Consistent with this finding, internal NaCl also increased, while intracellular gentamicin level decreased. GC–MS‐based metabolomics showed different distributions of pyruvate cycle intermediates among 0.5%, 4% and 10% NaCl. Differential activity of enzymes in the pyruvate cycle and altered expression of Na(+)‐NQR led to a reducing redox state, characterized by decreased levels of NADH, proton motive force (PMF) and ATP. Meanwhile, NaCl negatively regulated PMF as a consequence of the reducing redox state. These together are responsible for the decreased intracellular gentamicin level with the increased external level of NaCl. Our study reveals a previously unknown redox state‐dependent mechanism regulated by NaCl in V. alginolyticus that impacts antibiotic resistance.

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How does NaCl improve tolerance to cadmium in the halophyte Sesuvium portulacastrum ?

Cited by 71 publications

References 40 publications

Phytoremediation and Accumulation of Cadmium from Contaminated Saline Soils by Vetiver Grass

Phytoremediation and Accumulation of Cadmium from Contaminated Saline Soils by Vetiver Grass

Recent strategies of increasing metal tolerance and phytoremediation potential using genetic transformation of plants

NaCl promotes antibiotic resistance by reducing redox states in Vibrio alginolyticus

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