Effects of Surface Charge and Functional Groups on the Adsorption and Binding Forms of Cu and Cd on Roots of indica and japonica Rice Cultivars

Liu, Zhaodong; Zhou, Qin; Hong, Zhineng; Xu, Runsheng

doi:10.3389/fpls.2017.01489

Cited by 28 publications

(8 citation statements)

References 43 publications

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“…Lowering pH increases the concentration of cationic species, whereas increasing pH tends to decrease cationic species and increase anionic species. However, changes of solution pH also affect the protonation status of functional groups on the cell wall (Liu et al 2017), and then the binding of metals to the cell wall becomes complex and highly dependent on the value of pH.…”

Section: Discussionmentioning

confidence: 99%

Effect of pH on Cr(III) accumulation, biomass production, and phenolic profile in 2 Salvinia species

Ponce

Prado

Pagano

et al. 2018

Environmental Toxicology and Chemistry

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We analyzed the effect of pH on Cr(III) accumulation, biomass production, and phenolic profile of Salvinia rotundifolia and Salvinia minima plants grown in the presence of increasing concentrations of CrCl3. Biomass accumulation, metal tolerance index, and photosynthetic pigment contents indicate that Salvinia rotundifolia seems to be more tolerant of Cr(III) than S. minima at different pHs. Increased metal accumulation by Salvinia species under increasing pH could be explained by changes of the protonation status of cell wall functional groups because both the highest and the lowest pH values used in the present study were outside of the levels at which Cr(III) species start to precipitate. The metal translocation factor indicates that in buffered conditions S. rotundifolia tend to retain more Cr(III) in lacinias than S. minima, probably through the involvement of insoluble phenolics. The results of the present study could be useful to the management of solution pH to maximize the removal of Cr(III) by aquatic plants. Environ Toxicol Chem 2019;38:167–176. © 2018 SETAC

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Section: Discussionmentioning

confidence: 99%

Effect of pH on Cr(III) accumulation, biomass production, and phenolic profile in 2 Salvinia species

Ponce

Prado

Pagano

et al. 2018

Environmental Toxicology and Chemistry

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“…Ion exchange and chemical complexation with functional groups on root surfaces are the main mechanisms controlling metal ions adsorption by plant roots. 12,13 The exchangeable Mn(II) of plant roots is active and the complexed Mn(II) is inactive as a result of complexation with the functional groups on the surfaces of various plant roots. Thus, the former can be taken up into plant roots, whereas the latter is not easy to be absorbed by the same plant roots.…”

Section: Discussionmentioning

confidence: 99%

“…11 The formation of complexes between ions and functional groups on the plant roots is an important mechanism for the adsorption of metal ions by plant roots. 12,13 It has been reported that ion exchange on plant roots is closely related to uronic acid levels in the cell walls of plant roots. 14 The adsorption of metal ions by the cell walls and membranes of plant roots and its effect on toxicity and the uptake of these metals has been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

“…Nutrients and toxic ions are adsorbed from soil solution onto plant roots and then taken up by plants 11 . The formation of complexes between ions and functional groups on the plant roots is an important mechanism for the adsorption of metal ions by plant roots 12,13 . It has been reported that ion exchange on plant roots is closely related to uronic acid levels in the cell walls of plant roots 14 .…”

Section: Introductionmentioning

confidence: 99%

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More negative charges on roots enhanced manganese(II) uptake in leguminous and non‐leguminous poaceae crops

Nkoh

et al. 2023

J Sci Food Agric

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BACKGROUND: Manganese (Mn) is an essential micronutrient for plants, whereas excess Mn(II) in soils leads to its toxicity to crops. Mn(II) is adsorbed onto plant roots from soil solution and then absorbed by plants. Root charge characteristics should affect Mn(II) toxicity to crops and Mn(II) uptake by the roots of the crops. However, the differences in the effects of root surface charge on the uptake of Mn(II) among various crop species are not well understood. RESULTS:The roots of nine legumes and six non-legume poaceae were obtained by hydroponics and the streaming potential method and spectroscopic analysis were used to measure the zeta potentials and functional groups on the roots, respectively. The results indicate that the exchangeable Mn(II) adsorbed by plant roots was significantly positively correlated with the Mn(II) accumulated in plant shoots. Legume roots carried more negative charges and functional groups than non-legume poaceae roots, which was responsible for the larger amounts of exchangeable Mn(II) on legume roots in 2 h and the Mn(II) accumulated in their shoots in 48 h. Coexisting cations, such as Ca 2+ and Mg 2+ , were most effective in decreasing Mn(II) taken up by roots and accumulated in shoots than K + and Na + . This was because Ca 2+ and Mg 2+ could compete with Mn(II) for active sites on plant roots more strongly compared to K + and Na + . CONCLUSION: The root surface charge and functional groups are two important factors influencing Mn(II) uptake by roots and accumulation in plant shoots.

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“…The intensity of absorption peak in the spectrum represents the number of functional groups. As shown in Figure 3, the gradual peaks at 3,400, 1,635, 1,543, 1,247, and 1,031 cm −1 can be attributed to the polysaccharides (-OH stretching vibration), amide I (antisymmetric stretching vibrations of carboxyl), amide II (N-H bending vibrations), amide III (C-N stretching and N-H bending vibrations), and hemicelluloses (C-OH bending vibrations) (Xu et al, 2015;Liu et al, 2017;Ren et al, 2020). Under Al treatment, the intensity of characteristic peaks on the cell walls of both genotypes was significantly increased, indicating that Al induced the increase in the number of functional groups on the cell walls.…”

Section: Snp Regulated the Functional Groups Of The Cell Wall In Rice...mentioning

confidence: 97%

Using brefeldin A to disrupt cell wall polysaccharide components in rice and nitric oxide to modify cell wall structure to change aluminum tolerance

et al. 2022

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The components and structure of cell wall are closely correlated with aluminum (Al) toxicity and tolerance for plants. However, the cell wall assembly and function construction in response to Al is not known. Brefeldin A (BFA), a macrolide, is used to disrupt cell wall polysaccharide components, and nitric oxide (NO), a signal molecule, is used to modify the cell wall structure. Pretreatment with BFA accelerated Al accumulation in root tips and Al-induced inhibition of root growth of two rice genotypes of Nipponbare and Zhefu 802, and significantly decreased the cell wall polysaccharide content including pectin, hemicellulose 1, and hemicellulose 2, indicating that BFA inhibits the biosynthesis of components in the cell wall and makes the root cell wall lose the ability to resist Al. The addition of NO donor (SNP) significantly alleviated the toxic effects of Al on root growth, Al accumulation, and oxidative damage, and decreased the content of pectin polysaccharide and functional groups of hydroxyl, carboxyl, and amino in the cell wall via FTIR analysis, while had no significant effect on hemicellulose 1 and hemicellulose 2 content compared with Al treatment. Furthermore, NO didn't change the inhibition effect of BFA-induced cell wall polysaccharide biosynthesis and root growth. Taken together, BFA disrupts the integrity of cell wall and NO modifies partial cell wall composition and their functional groups, which change the Al tolerance in rice.

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Effects of Surface Charge and Functional Groups on the Adsorption and Binding Forms of Cu and Cd on Roots of indica and japonica Rice Cultivars

Cited by 28 publications

References 43 publications

Effect of pH on Cr(III) accumulation, biomass production, and phenolic profile in 2 Salvinia species

Effect of pH on Cr(III) accumulation, biomass production, and phenolic profile in 2 Salvinia species

More negative charges on roots enhanced manganese(II) uptake in leguminous and non‐leguminous poaceae crops

Using brefeldin A to disrupt cell wall polysaccharide components in rice and nitric oxide to modify cell wall structure to change aluminum tolerance

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