Lanthanum reduces the cadmium accumulation by suppressing expression of transporter genes involved in cadmium uptake and translocation in wheat

Yang, Hua; Xu, Zhong-Rui; Liu, Rongxiang; Zhou, Xiong

doi:10.1007/s11104-019-04112-y

Cited by 27 publications

(18 citation statements)

References 61 publications

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“…the results of Tan et al [20] showing that the overexpression of HMA2 in wheat and rice increased the root-shoot translocation of Zn/Cd. A recent report showed that La decreased Cd accumulation in wheat, which may be related to the TaHMA2 down-regulation [42]. In our study, Se supply signi cantly decreased the expression of TaHMA2 in root, indicating that the down-regulated TaHMA2 by Se supply might contribute to the inhibited Cd root-to-shoot translocation and nal decreased Cd accumulation in shoot of winter wheat.…”

supporting

confidence: 60%

1 Selenium Supply Alters Subcellular Distribution and Chemical Forms of Cadmium and Expression of Transporter Genes Involved in Cadmium Uptake and Translocation in Winter Wheat (Triticum Aestivum)

Zhu

Zhao

Nie

et al. 2020

Preprint

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Background Cadmium (Cd) accumulation in crops will affect the yield and quality of crops, and also harm human health. The application of selenium (Se) can reduce the absorption and transport of Cd in winter wheat. Results The result showed that increasing Se supply significantly decreased Cd concentration and accumulation in shoots and roots of winter wheat, and the root to shoot translocation of Cd. The Se supply increased the root length, surface area and root volume, but decreased the root average diameter. Increasing Se supply significantly decreased Cd concentration in cell wall, soluble fraction and cell organelle in roots and shoots. An increase of Se supply inhibited Cd distribution in the organelle of shoot and root, but enhanced Cd distribution in the soluble fraction of shoot and the cell wall of root. The Se supply also decreased the proportion of active Cd (ethanol-extractable (FE) Cd and deionized water-extractable (FW) Cd) in roots. In addition, the expression of TaNramp5-a, TaNramp5-b, TaHMA3-a, TaHMA3-b and TaHMA2 were significantly increased with the increase of Cd concentration in roots, and the expression of TaNramp5-a, TaNramp5-b and TaHMA2 in roots were down-regulated by increasing Se supply, regardless of Se supply or Cd stress, respectively. The expression of TaHMA3-b in root was significantly down-regulated by Se10 treatment at both Cd5 and Cd25 but up-regulated by Se5 treatment at Cd25. The expression of TaNramp5-a, TaNramp5-b, TaHMA3-a, TaHMA3-b and TaHMA2 in shoot were down-regulated by increasing Se supply at Cd5, and Se5 treatment up-regulated the expression of those genes in shoot at Cd25. Conclusions The results confirm that Se application limit Cd accumulation in wheat via regulating subcellular distribution and the chemical forms of Cd in tissues of winter wheat, as well as the expression of TaNramp5-a, TaNramp5-b and TaHMA2 in root.

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supporting

confidence: 60%

1 Selenium Supply Alters Subcellular Distribution and Chemical Forms of Cadmium and Expression of Transporter Genes Involved in Cadmium Uptake and Translocation in Winter Wheat (Triticum Aestivum)

Zhu

Zhao

Nie

et al. 2020

Preprint

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“…Such as the expression levels of OsNramp1, OsN-ramp5, OsHMA2 and OsHMA3, which were increased in rice roots exposure to Cd stress (Chen et al 2019). And Yang et al (2019) found Lanthanum reduced Cd accumulation in wheat by down-regulation the expression levels of TaNramp5 and TaHMA2. Consistent with these, the expression levels of these Cd transporters were elevated in wheat plants to further understand the molecular mechanism of how GSH regulates the absorption, translocation, and allocation of Cd in wheat plants.…”

Section: Resultsmentioning

confidence: 92%

Exogenous Glutathione Alleviates Cadmium Toxicity in Wheat by Influencing the Absorption and Translocation of Cadmium

Chen

et al. 2021

Bull Environ Contam Toxicol

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Cadmium (Cd), a toxic heavy metal, is harmful to plants and human health. Glutathione (GSH) could alleviate Cd toxicity of plant species, whereas its mechanism responsible for wheat remains poorly understood. Here, we found that exogenous GSH application significantly increased the fresh and dry weight, root elongation, chlorophyll contents, while decreased the contents of malondialdehyde (MDA) and GSH, and translocation factor of Cd compared with Cd treatment. Moreover, GSH application significantly increased activities of antioxidant enzymes and expression of related genes, which involved in GSH synthesis, especially in roots. In addition, we found that GSH application suppressed Cd-induced expression of metal transporter genes TaNramp1, TaNramp5, TaHMA2, TaHMA3, TaLCT1 and TaIRT2 in roots. Taken together, our results suggested that GSH could alleviate Cd toxicity in wheat by increasing GSH synthesis gene expression or suppressing Cd transporter genes expression, and further affecting Cd uptake and translocation in wheat plants.

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“…For example, an extensive field experiment also revealed that low concentrations of engineered Si nanoparticles alleviated negative effects of reduced watering on plant growth and leaf greenness, and increased yields in a hormetic manner (Alsaeedi et al, 2019). Nanomaterials may reduce or increase the accumulation of heavy metals by suppressing or enhancing the expression of transporter genes involved in heavy metal uptake and translocation (Yang et al, 2019).…”

Section: Preconditioning or Not?mentioning

confidence: 99%

The two faces of nanomaterials: A quantification of hormesis in algae and plants

Agathokleous

Feng

Iavicoli

et al. 2019

Environment International

126

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The rapid progress in nanotechnology has dramatically promoted the application of engineered nanomaterials in numerous sectors. The wide application of nanomaterials and the potential accumulation in the environment sparked interest in studying the effects of nanomaterials on algae and plants. Hormesis is a dose response phenomenon characterized by a biphasic dose response with a low dose stimulation and a high dose inhibition. This paper quantifies for the first time nanomaterial-induced hormesis in algae and plants. Five hundred hormetic concentration-response relationships were mined from the published literature. The median maximum stimulatory response (MAX) was 123%, and commonly below 200%, of control response. It was also lower in algae than in plants, and occurred commonly at concentrations < 100 mg L −1 . The no-observed-adverse-effectlevel (NOAEL) to MAX ratio was 2.4 for algae and 1.7 for plants, and the two distributions differed significantly. Ag nanoparticles induced higher MAX than TiO 2 and ZnO nanoparticles. The MAX varied upon nanomaterial application methods, growth stage of application (seed versus vegetative), type of endpoint and time window. While nanomaterial size did not affect significantly the MAX, sizes ≤50 nm appeared to have lower NOAEL:MAX ratio than sizes ≥100 nm, suggesting higher risks from incorrect application. The mechanisms underlying nanomaterial-induced hormetic concentration responses are discussed. This paper provides a strong foundation for enhancing research protocols of studies on nanomaterial effects on algae and plants as well as for incorporating hormesis into the risk assessment practices.

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Lanthanum reduces the cadmium accumulation by suppressing expression of transporter genes involved in cadmium uptake and translocation in wheat

Cited by 27 publications

References 61 publications

1 Selenium Supply Alters Subcellular Distribution and Chemical Forms of Cadmium and Expression of Transporter Genes Involved in Cadmium Uptake and Translocation in Winter Wheat (Triticum Aestivum)

1 Selenium Supply Alters Subcellular Distribution and Chemical Forms of Cadmium and Expression of Transporter Genes Involved in Cadmium Uptake and Translocation in Winter Wheat (Triticum Aestivum)

Exogenous Glutathione Alleviates Cadmium Toxicity in Wheat by Influencing the Absorption and Translocation of Cadmium

The two faces of nanomaterials: A quantification of hormesis in algae and plants

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