Zn Accumulation and Subcellular Distribution in the Zn Hyperaccumulator Sedum alfredii Hance1
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Nickel (Ni) phytotoxicity and detoxification mechanisms: A review
2023, ChemosphereA comparison study of physiological response and TaZIPs expression in seedlings of two wheat (Triticum aestivum L.) cultivars with contrasting grain zinc accumulation
2022, Plant ScienceCitation Excerpt :Gas exchange parameters, including net photosynthetic rate (Pn), intercellular CO2 concentration (Ci), stomatal conductance (gs), and transpiration rate (Tr), were measured on the third fully expanded leaves by using an open infrared gas analyzer (IRGA; Licor-6400 system, LICOR, Inc., USA) as described previously [58]. Using the methods of Weigel and Jäger [62] and Li et al. [63], frozen materials (roots and shoots) were pretreated. A 0.25 g portion of the frozen root or shoot was placed in a mortar and homogenized in 8 mL extraction buffer [50 mM Tris-HCl (pH 7.5), 250 mM sucrose, and 1.0 mM dithioerythritol] and then transferred to 10 mL polypropylene centrifuge tubes.
Temperature effects on Zn-responses and Zn-reclamation capacity of two native Brazilian plant species: Implications of climate change
2018, Environmental and Experimental BotanyCitation Excerpt :These results suggest that vacuoles may be the main storage sites for Zn in situations of plant exposure to an excess of the metal. Similar results were observed for the Zn-hyper-accumulator Sedum alfreddi (Li et al., 2006). The vacuole is a dynamic organelle and can comprise up to 90% of the total volume of some cells.
Combined effects of elevated temperature and CO<inf>2</inf> concentration on Cd and Zn accumulation dynamics in Triticum aestivum L.
2016, Journal of Environmental Sciences (China)Citation Excerpt :We found that most of the Cd and Zn in the shoots and roots accumulated in the soluble fraction (shoot Cd: 47.4%–50.5%, root Cd: 60.6%–63.9%; shoot Zn: 42.8%–51.2%, root Zn: 44.1%–48.1%), whereas only a small amount was found in the cell wall fractions (shoot Cd: 29.4%–32.6%, root Cd: 18.4%–21.2%; shoot Zn: 25.3%–31.5%, root Zn: 27.9%–32.3%) and organelle fractions (shoot Cd: 18.3%–23.0%, root Cd: 17.4%–18.8%; shoot Zn: 22.1%–27.8%; root Zn: 23.6%–27.4%). This result partially agrees with other investigations (Wu et al., 2005; Li et al., 2006), which showed that over 65% of the total Cd and Zn were bound to cell walls or transported into the vacuole (major constituent of the soluble fraction). The largest amount was found in the soluble fraction (mainly in vacuoles), which further confirmed the claim that the vacuole could be the main storage site for metals in plant cells (Yang et al., 2005).
Alleviation of chromium toxicity in rice seedlings by applying exogenous glutathione
2013, Journal of Plant PhysiologyCitation Excerpt :In the Cr + GSH treatment, the absorbed Cr was mainly located in the root epidermis, suggesting the immobilization and segmentation of epidermal cells to the heavy metal ions, and its important role in metal tolerance and detoxification (Hall, 2002). In addition, we found that Cr was mainly located in cell walls, followed by enrichment in the soluble composition, confirming the previous reports (Peng et al., 2005; Li et al., 2006; Liu et al., 2009). The results demonstrated that cell walls and vacuoles are the main plant subcellular compartments for accumulating Cr.
Mechanisms of nickel uptake and hyperaccumulation by plants and implications for soil remediation
2012, Advances in Agronomy
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Project supported by the National Natural Science Foundation of China (No. 20277035) and the National Key Basic Research Program (973 Program) of China (No. 2002CB410804).