Elemental distribution by cryo-micro-PIXE in the zinc and cadmium hyperaccumulator Sedum plumbizincicola grown naturally

Hu, Pengjie; Wang, Yaodong; Przybyłowicz, W.J.; Li, Zhu; Barnabas, Alban D.; Wu, Longhua; Luo, Yongming; Mesjasz‐Przybyłowicz, Jolanta

doi:10.1007/s11104-014-2321-4

Cited by 23 publications

(12 citation statements)

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“…Therefore using Cd-K X-ray lines, free of interferences, is advantageous. In the first example of Cd analysis, the concentration of this element in roots, stems and leaves of Sedum plumbizincicola (Crassulaceae), a Zn/Cd hyperaccumulator, was too low for effective elemental mapping in frozen-hydrated state, but average concentrations in various tissues were obtained without problems (Hu et al, 2015). In the second example, for freeze-dried leaf cross sections of a field-collected Thlaspi praecox (Brassicaceae), the elemental maps obtained on the basis of K X-ray lines properly reflected the Cd distribution (Vogel-Miku s et al, 2008).…”

Section: Pixe Case Studiesmentioning

confidence: 99%

X‐ray elemental mapping techniques for elucidating the ecophysiology of hyperaccumulator plants

et al. 2017

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Contents Summary432I.Introduction433II.Preparation of plant samples for X‐ray micro‐analysis433III.X‐ray elemental mapping techniques438IV.X‐ray data analysis442V.Case studies443VI.Conclusions446Acknowledgements449Author contributions449References449 Summary Hyperaccumulators are attractive models for studying metal(loid) homeostasis, and probing the spatial distribution and coordination chemistry of metal(loid)s in their tissues is important for advancing our understanding of their ecophysiology. X‐ray elemental mapping techniques are unique in providing in situ information, and with appropriate sample preparation offer results true to biological conditions of the living plant. The common platform of these techniques is a reliance on characteristic X‐rays of elements present in a sample, excited either by electrons (scanning/transmission electron microscopy), protons (proton‐induced X‐ray emission) or X‐rays (X‐ray fluorescence microscopy). Elucidating the cellular and tissue‐level distribution of metal(loid)s is inherently challenging and accurate X‐ray analysis places strict demands on sample collection, preparation and analytical conditions, to avoid elemental redistribution, chemical modification or ultrastructural alterations. We compare the merits and limitations of the individual techniques, and focus on the optimal field of applications for inferring ecophysiological processes in hyperaccumulator plants. X‐ray elemental mapping techniques can play a key role in answering questions at every level of metal(loid) homeostasis in plants, from the rhizosphere interface, to uptake pathways in the roots and shoots. Further improvements in technological capabilities offer exciting perspectives for the study of hyperaccumulator plants into the future.

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Section: Pixe Case Studiesmentioning

confidence: 99%

X‐ray elemental mapping techniques for elucidating the ecophysiology of hyperaccumulator plants

et al. 2017

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“…Heavy metals can be transported up to seeds and new leaves through the phloem, and can also be transported down to root cells [22] . Thirdly, after the heavy metals accumulate in the roots, they are transported to the leaves and stems to achieve the enrichment and isolation of heavy metals through the vacuoles above the ground 23 . The heavy metals are mainly stored in the vacuoles of the leaves, so as to avoid damage to the important physiological processes of the cells [23][24] .…”

Section: Mechanism Of Heavy Metal Accumulation By Hyperaccumulatorsmentioning

confidence: 99%

The current knowledge of hyperaccumulator plants

Ding

Han

et al. 2021

E3S Web Conf.

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In recent years, heavy metal pollution in soil has become a serious problem. Remediation technologies have been developed, such as physical remediation, chemical remediation, microbial remediation and other technologies. Among them, phytoremediation has been widely used in practice. In this paper, the present situation of heavy metal pollution in soil in China, the research progress of remediation technology of heavy metal contaminated soil and the remediation of heavy metal contaminated soil by hyperaccumulators are reviewed, to help with follow-up research in this area.

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“…Rice aleurone layer and embryo (containing more thiamine than endosperm) has been removed in the process of grain polishing, which leads to the further decrease of thiamine content in milled rice (mainly endosperm). Therefore, the lack of thiamine may cause beriberi in the population with milled rice as the only staple food [71]. In recent years, important progress has been made in the biosynthetic pathway of thiamine in plants [72]; [73], the synthesis of thiamine occurs in plastids.…”

Section: The Synthesis and Regulation Of Vitamin In Rice Grainsmentioning

confidence: 99%

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2018

JBR

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Amino acids, vitamins and lipids are the important micronutrients in rice grains. Their synthesis and regulation have important effects on the normal growth and development in rice seeds. This review has mainly summarized the new advances in the synthesis and regulation of amino acids, vitamins and lipids in rice grains. Simultaneously, the challenges of the synthesis and accumulation of the micronutrients in rice grains were also discussed. This review provides important information for genetic improvement of grain quality in rice and, potentially, other staple cereals.

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Elemental distribution by cryo-micro-PIXE in the zinc and cadmium hyperaccumulator Sedum plumbizincicola grown naturally

Cited by 23 publications

References 44 publications

X‐ray elemental mapping techniques for elucidating the ecophysiology of hyperaccumulator plants

X‐ray elemental mapping techniques for elucidating the ecophysiology of hyperaccumulator plants

The current knowledge of hyperaccumulator plants

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