Chromate and phosphate inhibited each other's uptake and translocation in arsenic hyperaccumulator Pteris vittata L.

Oliveira, Luciana Magda de; Lessl, Jason T.; Gress, Julia; Tisarum, Rujira; Guilherme, Luiz Roberto Guimarães; Lena, Q.

doi:10.1016/j.envpol.2014.11.009

Cited by 29 publications

(8 citation statements)

References 37 publications

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“…Previously, different authors have reported that Cu and Cr showed competitive behavior when applied with some other elements like nickel and phosphorus [ 49 , 50 ]. However, in this study, application of individual treatment of Cu enhanced the slight accumulation of Cr in leaves with strong elevation in the roots.…”

Section: Discussionmentioning

confidence: 99%

Ecotoxicological and Interactive Effects of Copper and Chromium on Physiochemical, Ultrastructural, and Molecular Profiling in Brassica napus L.

Zhang

Gill

et al. 2018

BioMed Research International

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Heavy metal accumulation causes huge environmental problems, particularly in agricultural ecosystems which have deteriorative effects on the yield and quality of crops. Individual copper (Cu) and chromium (Cr) effects have been investigated extensively in plants; however, co-contamination of Cu and Cr induced stress on Brassica napus L. is still unclear. In the present experiment, the interactive effects of Cu and Cr were studied in two B. napus cultivars (Zheda 622 and ZS 758). Results showed that the application of Cr was more toxic than Cu, and their combined stress had shown a significant adverse effect on plant growth. Biomass and photosynthetic pigment were decreased remarkably under all metal treatments. Individual treatments of Cu and Cr and their combination cause the accumulation of ROS and lipid peroxidation. Moreover, the activities of antioxidant enzymes and their mRNA transcription levels, such as catalase (CAT), ascorbate peroxidase, glutathione reductase, superoxide dismutase, and peroxidase, were increased, especially when treated with Cr alone or under Cu+Cr combined treatment in both cultivars, except for the CAT activity which was decreased in both leaves and roots of sensitive cultivar Zheda 622 as compared with their respective controls. Additionally, nonenzymatic antioxidants like reduced and oxidized glutathione showed a differential activity pattern in roots and leaves of both cultivars. A more pronounced modification in chloroplast ultrastructure was observed in both cultivars under Cu+Cr treatment followed by Cr and Cu alone treatments. Furthermore, synergistic effects of Cu and Cr were prominent; this may be due to the enhanced metals uptake under combined treatment, which suggests that Cr and Cu interaction is not competitive but is rather additive and genotypic-dependent.

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Section: Discussionmentioning

confidence: 99%

Ecotoxicological and Interactive Effects of Copper and Chromium on Physiochemical, Ultrastructural, and Molecular Profiling in Brassica napus L.

Zhang

Gill

et al. 2018

BioMed Research International

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“…Air-dried plant samples (∼0.50 g) were digested on a graphite digestion block (Environmental Express, Mt. Pleasant, SC) using the USEPA Method 3050B via HNO 3 –H 2 O 2 digestion . After filtering through 0.45 μm filters, total Se and As concentrations were determined by inductively coupled plasma mass spectrometry (ICP-MS, NexION300X, Perkin Elmer, Waltham, MA).…”

Section: Methodsmentioning

confidence: 99%

Selenium Increased Arsenic Accumulation by Upregulating the Expression of Genes Responsible for Arsenic Reduction, Translocation, and Sequestration in Arsenic Hyperaccumulator Pteris vittata

Dai

Peng

Ding

et al. 2022

Environ. Sci. Technol.

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Selenate enhances arsenic (As) accumulation in Ashyperaccumulator Pteris vittata, but the associated molecular mechanisms are unclear. Here, we investigated the mechanisms of selenate-induced arsenic accumulation by exposing P. vittata to 50 μM arsenate (AsV 50 ) and 1.25 (Se 1.25 ) or 5 μM (Se 5 ) selenate in hydroponics. After 2 weeks, plant biomass, plant As and Se contents, As speciation in plant and growth media, and important genes related to As detoxification in P. vittata were determined. These genes included P transporters PvPht1;3 and PvPht1;4 (AsV uptake), arsenate reductases PvHAC1 and PvHAC2 (AsV reduction), and arsenite (AsIII) antiporters PvACR3 and PvACR3;2 (AsIII translocation) in the roots, and AsIII antiporters PvACR3;1 and PvACR3;3 (AsIII sequestration) in the fronds. The results show that Se 1.25 was more effective than Se 5 in increasing As accumulation in both P. vittata roots and fronds, which increased by 27 and 153% to 353 and 506 mg kg −1 . The As speciation analyses show that selenate increased the AsIII levels in P. vittata, with 124−282% more AsIII being translocated into the fronds. The qPCR analyses indicate that Se 1.25 upregulated the gene expression of PvHAC1 by 1.2-fold, and PvACR3 and PvACR3;2 by 1.0-to 2.5-fold in the roots, and PvACR3;1 and PvACR3;3 by 0.6-to 1.1-fold in the fronds under AsV 50 treatment. Though arsenate enhanced gene expression of P transporters PvPht1;3 and PvPht1;4, selenate had little effect. Our results indicate that selenate effectively increased As accumulation in P. vittata, mostly by increasing reduction of AsV to AsIII in the roots, AsIII translocation from the roots to fronds, and AsIII sequestration into the vacuoles in the fronds. The results suggest that selenate may be used to enhance phytoremediation of As-contaminated soils using P. vittata.

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“…The uptake of nonessential heavy metals is mainly through the transporters for essential nutrients. For instance, fungi take up As(V) through P transporters (Catarecha et al, 2007) and Cr(VI) through sulfate transporters (de María Guillén-Jiménez et al, 2008;Holland and Avery, 2011) or phosphate transporters (de Oliveira et al, 2015).…”

Section: Cr Uptake and Stabilization By Extraradical Myceliummentioning

confidence: 99%

“…Cr stress may reduce plant nutrient uptake and cause nutrient deficiency, because Cr uptake competes for transporters of essential nutrients, such as sulfate and phosphate transporters (Holland and Avery, 2011). For examples, Cr(VI) exposure may result in S or P deficiencies (Pereira et al, 2008;de Oliveira et al, 2015). However, AM fungi may assist nutrient uptake by plants, such as P (Karandashov and Bucher, 2005), N (Govindarajulu et al, 2005), or S (Allen and Shachar-Hill, 2009), alleviating nutrient deficiency in infertile soil.…”

Section: Am Symbiosis Improves Plant Mineral Nutrition Under Cr Contamentioning

confidence: 99%

Arbuscular mycorrhiza and plant chromium tolerance

Zhang

Huang

et al. 2019

Soil Ecol. Lett.

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REVIEW A B S T R A C T Arbuscular mycorrhizal (AM) fungi are ubiquitous soil fungi that form symbiotic associations with most terrestrial plants. The growth and functions of AM fungi depend on carbohydrates supplied by the plants, in return, the fungi assist the plants to acquire mineral nutrients (e.g., phosphorus) from soil. The AM symbiosis also improves plant survival in various unfavorable environments, such as metal (loid) contaminated soil. It has been well demonstrated that AM symbiosis improved plant adaptation to Cr contamination, which would have a great potential in phytoremediation and ecological restoration of Cr contaminated soils. In this paper, we have reviewed the role of AM fungi in alleviation of Cr phytotoxicity and associated factors influencing plant Cr tolerance. AM symbiosis improves plant Cr tolerance through its direct roles in Cr stabilization and transformation and indirect roles via AM symbiosis mediated nutrient acquisition and physiological regulation. Future research on physiological and molecular mechanisms underlying Cr behavior and detoxification in AM symbiosis, as well as potential use of AM fungi in ecological restoration and agriculture production in Cr contaminated soils were also proposed.

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Chromate and phosphate inhibited each other's uptake and translocation in arsenic hyperaccumulator Pteris vittata L.

Cited by 29 publications

References 37 publications

Ecotoxicological and Interactive Effects of Copper and Chromium on Physiochemical, Ultrastructural, and Molecular Profiling in Brassica napus L.

Ecotoxicological and Interactive Effects of Copper and Chromium on Physiochemical, Ultrastructural, and Molecular Profiling in Brassica napus L.

Selenium Increased Arsenic Accumulation by Upregulating the Expression of Genes Responsible for Arsenic Reduction, Translocation, and Sequestration in Arsenic Hyperaccumulator Pteris vittata

Arbuscular mycorrhiza and plant chromium tolerance

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