Microplastics promoted cadmium accumulation in maize plants by improving active cadmium and amino acid synthesis

Zhao, Meng; Xu, Li; Wang, Xuexia; Li, Congping; Zhao, Yujie; Cao, Bing; Zhang, Caigui; Zhang, Jiajia; Wang, Jiachen; Chen, Yanhua; Zou, Guoyuan

doi:10.1016/j.jhazmat.2023.130788

Cited by 56 publications

(1 citation statement)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Z. mays is both an economic grain crop and an energy plant, which has a high biomass yield, strong environmental adaptability, and good absorption capacity for chromium. 19,20 Z. mays is used to absorb chromium, nanopolystyrene (nano-PS) particles, and nanocarboxylic polystyrene (nano-PS-COOH) particles in the environment. In addition, nano-PS and nano-PS-COOH are used as chelating agents to promote Z. mays to absorb chromium ions.…”

Section: ■ Introductionmentioning

confidence: 99%

Optimization of Electrode Materials Using Nanocarboxylic Polystyrene Promotes Accumulation for Chromium in Zea mays from Water and Soil Contamination

Wu,

Sangaraju

et al. 2024

Langmuir

View full text Add to dashboard Cite

Chromium is a multivalent metal with great development in the energy storage field because it can effectively improve the electrochemical performance of the material. However, chromium(VI) is soluble in water and toxic, which causes serious metal pollution in the environment. In addition, nanoplastics are difficult to degrade and easy to accumulate, which is an urgent environmental problem to be solved. Therefore, we choose Zea mays to absorb chromium ions, nanopolystyrene, nanocarboxylic polystyrene, and their complexes, which can coordinate and decompose with various polymers in Z. mays, and produce coordination, conjugation, mixed valence, and adjacent group effects. Due to the above effects, the UV−vis spectrum of the material is blueshifted; the X-ray photoelectron spectroscopy peaks of Cr 2p have a chemical shift; the pore structure is optimized; the graphitization degree is improved; the content of N, O, and Cr in the material increases; and the elements are evenly distributed. The series of optimization processes makes the electrodes exhibit excellent electrochemical performance in both supercapacitors and lithium-ion batteries. At 0.5 A•g −1 , the specific capacitance of the electrode reaches 490 F•g −1 . After 10,000 cycles, its specific capacitance remains at 429.3 F•g −1 , and the Coulombic efficiency is 89.9%. In lithium-ion batteries, the initial discharging capacity of the electrode is 1071.7 mAh•g −1 at 0.05 A•g −1 . After 5000 cycles, its specific capacity can still reach 242 mAh•g −1 at 0.2 A•g −1 , and the Coulombic efficiency is above 95%.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Optimization of Electrode Materials Using Nanocarboxylic Polystyrene Promotes Accumulation for Chromium in Zea mays from Water and Soil Contamination

Wu,

Sangaraju

et al. 2024

Langmuir

View full text Add to dashboard Cite

show abstract

Joint toxicity of cadmium (II) and microplastic leachates on wheat seed germination and seedling growth

Du,

Wu,

Yang

et al. 2024

Environ Geochem Health

Self Cite

View full text Add to dashboard Cite

Cadmium (Cd) and microplastics are widely distributed in soil and pose potential threats to agricultural production and human health. However, the joint toxicity of Cd and microplastics on crop growth remain largely unknown. In this study, the toxic effects of Cd 2+ solution and two kinds of microplastic leachates, polyvinyl chloride (PVC) and lowdensity polyethylene (LDPE), on wheat seeds germination and seedlings' growth were explored under the single and combined conditions. The results showed that Cd 2+ solution and two kinds of microplastic leachates stimulated wheat seeds germination process but inhibited the germination rate by 0-8.6%. The combined treatments promoted wheat seeds germination but inhibited the growth of wheat seedlings on different degree. In especial, the combination of 2.0 mg L -1 Cd 2+ and 1.0 mgC L -1 PVC could promote both wheat seeds germination and seedlings' growth, but they synergistically increased the antioxidant enzyme activity of seedlings. The physiological and biochemical indicators showed that the possible mechanism through which Cd 2+ and microplastics leachates and their combination affected wheat seedlings involved oxidative stress. The toxicity of the PVC leachate to wheat seedlings was stronger than LDPE leachate. The addition of Cd 2+ could alleviate the toxicity of PVC leachate on wheat seedlings, and reduce the toxicity of LDPE leachate on wheat seedlings under the same concentration class combinations but aggravated stress under different concentration class combinations, consistent with the effect on wheat seedlings' growth. Overall, our study has important implications for the joint toxicity of Cd 2+ solution and microplastic leachates in agriculture. HighlightsThe germination rate of wheat seeds was inhibited by 0-8.6% under single treatments All Cd 2+ -PVC combined treatments enhanced wheat seeds germination Cd 2+ -PVC promoted wheat seeds germination better than Cd 2+ -LDPE The possible mechanism that affects wheat seedlings' growth involves oxidative stress Cd2 + PVC1 promoted both wheat seeds germination and seedlings' growth

show abstract

Effects of microplastics on 3,5-dichloroaniline adsorption, degradation, bioaccumulation and phytotoxicity in soil-chive systems

Yang,

Li,

Guo

et al. 2024

Environ Geochem Health

View full text Add to dashboard Cite

Microplastics promoted cadmium accumulation in maize plants by improving active cadmium and amino acid synthesis

Cited by 56 publications

References 61 publications

Optimization of Electrode Materials Using Nanocarboxylic Polystyrene Promotes Accumulation for Chromium in Zea mays from Water and Soil Contamination

Optimization of Electrode Materials Using Nanocarboxylic Polystyrene Promotes Accumulation for Chromium in Zea mays from Water and Soil Contamination

Joint toxicity of cadmium (II) and microplastic leachates on wheat seed germination and seedling growth

Effects of microplastics on 3,5-dichloroaniline adsorption, degradation, bioaccumulation and phytotoxicity in soil-chive systems

Contact Info

Product

Resources

About