Direct measurement of lanthanum uptake and distribution in internodal cells of Chara

Li, Zijie; Zhang, Zhi Yong; Jiang, Wenjun; Yu, Ming; Yunlong, Zhou; Zhao, Yuliang; Chai, Zhifang

doi:10.1016/j.plantsci.2008.01.013

Cited by 24 publications

(15 citation statements)

References 14 publications

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“…In addition, little consensus has yet been reached regarding the life cycle of REEs in plant cells. Some studies report that REEs cannot enter the plant cells but only be localized in apoplast (8)(9)(10)(11)(12)(13)(14); other studies, however, argue that REEs cannot only enter the plant cells, but also be deposited inside the cells, such as in the membranes of chloroplast, vacuole, cytoplasm, and nucleus (15)(16)(17)(18)(19)(20)(21). The discrepancy may be because of different experimental methods and different concentrations of REE ions used in separate studies.…”

mentioning

confidence: 99%

Rare earth elements activate endocytosis in plant cells

Wang

Zhou

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

125

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It has long been observed that rare earth elements (REEs) regulate multiple facets of plant growth and development. However, the underlying mechanisms remain largely unclear. Here, using electron microscopic autoradiography, we show the life cycle of a light REE (lanthanum) and a heavy REE (terbium) in horseradish leaf cells. Our data indicate that REEs were first anchored on the plasma membrane in the form of nanoscale particles, and then entered the cells by endocytosis. Consistently, REEs activated endocytosis in plant cells, which may be the cellular basis of REE actions in plants. Moreover, we discovered that a portion of REEs was successively released into the cytoplasm, self-assembled to form nanoscale clusters, and finally deposited in horseradish leaf cells. Taken together, our data reveal the life cycle of REEs and their cellular behaviors in plant cells, which shed light on the cellular mechanisms of REE actions in living organisms.activation | endocytic vesicle S ome trace elements, such as rare earth elements (REEs), have been observed for a long time to be beneficial to plant growth (1, 2). REEs are f-block elements in the periodic table, including 15 lanthanides, plus scandium and yttrium (2). The beneficial effect of REEs on plants was first reported in 1917, when it was found that cerium, an REE, improved physiological activities of water-floss (Spirogyra) (3). Since the 1970s, REEs have been widely used in agriculture as plant growth stimulants (4). Currently, more than 100 of crop species have been applied with REEs, which has increased crop yields by 5-15% (4). In addition, REEs also serve to protect plants against certain plant diseases and some stresses, such as drought, cold, acid rain, or heavy metals (2). The wide use of REEs has caused an overaccumulation of REEs in the ecosystem, including soil (5), atmosphere (6), and water (7). Moreover, it was shown that REEs have dual effects on plant growth: low concentrations of REEs exert positive effects on growth and yield of crops, whereas high concentrations of REEs seem to be harmful for plants, indicating that REEs are not absolutely good for plants (2). Therefore, it is imperative to elucidate how REEs act on plant cells to ensure food safety.Despite of many advances achieved in recent years, the action mechanisms of REEs on plant cells still remain poorly understood (2). Several explanations, which are mainly focused on the physiological roles of REEs in plant cells, have been proposed (2). These mechanisms include the possible changes of photosynthesis, mineral nutrient uptake and metabolism, catalytic activities of some enzymes, hormonal balance, and so forth (2). However, these hypotheses are not connected to any cellular or molecular principles and are therefore far from explaining the action mechanisms of REEs in plants (2,8). In addition, little consensus has yet been reached regarding the life cycle of REEs in plant cells. Some studies report that REEs cannot enter the plant cells but only be localized in apoplast (8-14); other st...

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confidence: 99%

Rare earth elements activate endocytosis in plant cells

Wang

Zhou

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

125

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“…The cell contents were flushed out by injecting about 1 mL of Milli-Q water, leaving a clear sleeve of cell wall and cell membrane (cell-wall fraction). In the case of La determination in the cell contents, to minimize the contamination of extracellular La during the separation, internodal cells were rinsed in APW (pH=6.0) with 6 mM citric acid for 1 h before the sampling [13].…”

Section: Measurement Of La Ca and Mg Concentrations In The Cell Conmentioning

confidence: 99%

“…The large and cylinder internodal cells of this species offer a possibility to directly analyze subcellular distribution of polyvalent cations, e.g., Ca 2+ , Al 3+ , Sc 3+ , and Ga 3+ [11,12]. Taking advantage of these cells, we have successfully studied La 3+ uptake, distribution at a cellular level and its effects on absorption of mineral nutrients [13,14]. In this article, we report the effects of La 3+ treatments on calcium and magnesium concentrations in the cell content and cell wall of C. corallina.…”

Section: Introductionmentioning

confidence: 99%

Effects of Lanthanum on Calcium and Magnesium Contents and Cytoplasmic Streaming of Internodal Cells of Chara corallina

Zhang

et al. 2010

Biol Trace Elem Res

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Biological and environmental effects of lanthanide series of elements have received much attention recently due to their wide applications. In this study, effects of La(3+) treatments on calcium and magnesium concentrations as well as cytoplasmic streaming of internodal cells of Chara corallina were investigated. At all treatment concentrations (10, 100, and 1,000 μM), La(3+) significantly decreased calcium concentrations in the cell-wall fractions after 5-h treatments. Calcium concentrations in the cell contents and magnesium concentrations in the cell-wall fractions were reduced by 100 and 1,000 μM La(3+) treatments. However, cytoplasmic streaming as an indicator of [Ca(2+)](cyt) was only inhibited at the highest La(3+) concentration (1,000 μM). The results suggest that La(3+) may affect cellular calcium homeostasis by actions other than as a simple Ca(2+) antagonist. La(3+) could partially compensate for calcium deficiency at certain concentrations.

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“…Rare earth elements (REEs) assumed the importance of indispensable metals mainly because of its fast growing demand in various fields [2], as the chemical engineering, metallurgy, nuclear energy, optical, magnetic, luminescence, laser materials, high temperature superconductors, secondary batteries, catalysis, petroleum cracking and ceramics [3,4]. Their wide applications in industrial sectors, may lead to the depletion of their ores.…”

Section: Introductionmentioning

confidence: 99%

Neodymium(III) removal by functionalized magnetic nanoparticles

Miraoui

Didi

Villemin

2015

J Radioanal Nucl Chem

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In this paper, neodymium removed by liquidsolid extraction is made by magnetic nanoparticles functionalized by the poly(aminoethylene N-methyl 1-formic acid, 1-phosphonic acid) (PAEMFP), with two different sizes. For a quantity of 0.01 g of magnetic particles some parameters were studied. Optimal extraction yield was achieved in a initial pH equal at 7.0 for fine particles and pH 6.0 for the large particles. The experimental capacity obtained was 25 mg g -1 for larges particles and 23 mg g -1 for fines particles. The quantitative elution study of neodymium(III) can be realized with acetic acid 0.5 mol L -1 after 120 min of shaking for two sizes.

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Direct measurement of lanthanum uptake and distribution in internodal cells of Chara

Cited by 24 publications

References 14 publications

Rare earth elements activate endocytosis in plant cells

Rare earth elements activate endocytosis in plant cells

Effects of Lanthanum on Calcium and Magnesium Contents and Cytoplasmic Streaming of Internodal Cells of Chara corallina

Neodymium(III) removal by functionalized magnetic nanoparticles

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