Transformation of 14C‐Labeled Graphene to 14CO2 in the Shoots of a Rice Plant

Huang, Chi‐Cheng; Xia, Tian; Niu, Junfeng; Yang, Yu; Lin, Sijie; Wang, Xiangke; Yang, Guoqing; Mao, Liang; Xing, Baoshan

doi:10.1002/anie.201805099

Cited by 52 publications

(38 citation statements)

References 37 publications

(17 reference statements)

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“…Conversely, GO mainly accumulated in the roots and low levels in leaves. Besides root accumulation and translocation from root to shoot, Huang et al (2018) further discovered that ~9% of the accumulated FLG was degraded to CO 2 in the rice plant, and that the hydroxyl radical in the leaf played an important role in degrading FLG. Earlier studies have demonstrated that CO 2 was the final product of the complete enzymatic catalyzed oxidation of GO (Kotchey et al, 2011), and H 2 O 2 was a key component of this degradation process (Xing et al, 2014).…”

Section: Phytotoxicity Of Gfnsmentioning

confidence: 99%

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Phytotoxicity of Graphene Family Nanomaterials and Its Mechanisms: A Review

Wang

et al. 2019

Front. Chem.

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Graphene family nanomaterials (GFNs) have experienced significant development in recent years and have been used in many fields. Despite the benefits, they bring to society and the economy, their potential for posing environmental and health risks should also be considered. The increasing release of GFNs into the ecosystem is one of the key environmental problems that humanity is facing. Although most of these nanoparticles are present at low concentrations, many of them raise considerable toxicological concerns, particularly regarding their accumulation in plants and the consequent toxicity introduced at the bottom of the food chain. Here, we review the recent progress in the study of toxicity caused by GFNs to plants, as well as its influencing factors. The phytotoxicity of GFNs is mainly manifested as a delay in seed germination and a severe loss of morphology of the plant seedling. The potential mechanisms of phytotoxicity were summarized. Key mechanisms include physical effects (shading effect, mechanical injury, and physical blockage) and physiological and biochemical effects (enhancement of reactive oxygen species (ROS), generation and inhibition of antioxidant enzyme activities, metabolic disturbances, and inhibition of photosynthesis by reducing the biosynthesis of chlorophyll). In the future, it is necessary to establish a widely accepted phytotoxicity evaluation system for safe manufacture and use of GFNs.

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Section: Phytotoxicity Of Gfnsmentioning

confidence: 99%

“…Compared to assessing their toxicity, the uptake, transport, distribution, and degradation of GFNs within plants remains poorly understood (Huang et al, 2018). Their transformation pathways and fate in water/soil-plant systems requires additional research, which will contribute to prevention of environmental risks.…”

Section: Problems and Prospectsmentioning

confidence: 99%

Phytotoxicity of Graphene Family Nanomaterials and Its Mechanisms: A Review

Wang

et al. 2019

Front. Chem.

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“…Kah et al (2017) reviewed the sorption of ionic and ionizable organic compounds (IOCs) on carbonaceous materials (activated carbon, biochar, carbon nanotubes and graphene) and concluded that the adsorption of IOCs was mainly dominated by electrostatic interactions, electron donor-acceptor interactions, charge-assisted hydrogen bonds and cation-π assisted π-π interactions. They also suggested the possible transformation of IOCs may occur through different mechanisms, which should receive attention in the context of environmental remediation (Hu et al 2019;Huang et al 2018;Zhao et al 2019a). Yang et al (2019a) reviewed different kinds of heavy metal ions on carbon materials and the surface introduction of oxygen, nitrogen and sulfur functional groups onto carbon materials to improve the sorption capacities of metal ions.…”

Section: Introductionmentioning

confidence: 99%

Efficient elimination of organic and inorganic pollutants by biochar and biochar-based materials

Jin

et al. 2020

Biochar

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301

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Biochar have received multidisciplinary attention because of their extraordinary physicochemical properties. In this review, the application of biochar and biochar-based materials for the efficient elimination of organic and inorganic pollutants are summarized. The sorption of organic chemicals and heavy metal ions/radionuclides, degradation/transformation of organic pollutants, and sorption-reduction-solidification of high-valent metal ions are described in detail. The interaction mechanism at molecular level from advanced spectroscopic techniques and theoretical calculations is discussed. Finally, the challenges in the application of biochar and biochar-supported materials in the immobilization of heavy metal ions and photocatalytic degradation of persistent organic pollutants in soils or wastewater are pointed out. This review is helpful for the graduate students to understand the recent works about biochar and biochar-supported materials in environmental pollutants management.

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“…Importantly, in this study, the comparison with MICA highlighted that FLG can be considered as safe as a naturally occurring planar NM, not uncommon in soil particulate matter. However, before excluding FLG from the ecotoxicologically relevant substances for seed plants, biodistribution and transformation in the plant body [ 78 , 79 ] still need to be thoroughly investigated.…”

Section: Discussionmentioning

confidence: 99%

Effects of Few-Layer Graphene on the Sexual Reproduction of Seed Plants: An In Vivo Study with Cucurbita pepo L.

et al. 2020

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Products containing graphene-related materials (GRMs) are becoming quite common, raising concerns for environmental safety. GRMs have varying effects on plants, but their impact on the sexual reproduction process is largely unknown. In this study, the effects of few-layer graphene (FLG) and a similarly layered phyllosilicate, muscovite mica (MICA), were tested in vivo on the reproductive structures, i.e., pollen and stigma, of Cucurbita pepo L. ssp. pepo ‘greyzini’ (summer squash, zucchini). Pollen was exposed to FLG or MICA, after careful physical-chemical characterization, at concentrations of 0.5 and 2 mg of nanomaterial (NM) per g of pollen for up to six hours. Following this, pollen viability was tested. Stigmas were exposed to FLG or MICA for three hours and then analyzed by environmental scanning electron microscopy to verify possible alterations to their surface. Stigmas were then hand-pollinated to verify the effects of the two NMs on pollen adhesion and in vivo pollen germination. FLG and MICA altered neither pollen viability nor the stigmatic surface. However, both NMs equivalently decreased pollen adhesion and in vivo germination compared with untreated stigmas. These effects deserve further attention as they could impact on production of fruits and seeds. Importantly, it was shown that FLG is as safe as a naturally occurring nanomaterial.

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Transformation of ¹⁴C‐Labeled Graphene to ¹⁴CO₂ in the Shoots of a Rice Plant

Cited by 52 publications

References 37 publications

Phytotoxicity of Graphene Family Nanomaterials and Its Mechanisms: A Review

Phytotoxicity of Graphene Family Nanomaterials and Its Mechanisms: A Review

Efficient elimination of organic and inorganic pollutants by biochar and biochar-based materials

Effects of Few-Layer Graphene on the Sexual Reproduction of Seed Plants: An In Vivo Study with Cucurbita pepo L.

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