Effects of Polystyrene Nanoplastics and Pcb-44 Exposure on Growth and Physiological Biochemistry of Chlorella Vulgaris DOI

Qingzhi Zheng,

Maochun Wei,

Lei Yan

et al.

Published: Jan. 1, 2023

Both NPs and PCBs are emerging contaminants widely distributed in the environment, it is worth exploring whether combination of two causes serious pollution harm. Therefore, we studied effects PS-NPs PCB-44 alone together after 96 h 21 d exposure to C. pyrenoidosa. The results showed that affected cell cycle pyrenoidosa inhibited its normal growth. Physiologically, increased relative conductivity algal solution, decreased surface hydrophobicity cells, reduced synthesis chlorophyll a b. Biochemically, induced oxidative stress with significant changes enzymatic activities SOD CAT MDA content. Moreover, expression photosynthesis-related genes (psbA, rbcL, rbcS) all responded, negatively affecting photosynthesis. In particular, toxic were observed single co-exposure PCB-44, similar trends acute chronic experiments. Taken together, caused negative on growth physiological biochemistry These provide scientific information further explore aquatic organisms ecosystems.

Language: Английский

Nanoplastics Elicit Stage-Specific Physiological, Biochemical, and Gut Microbiome Responses in a Freshwater Mussel DOI Creative Commons

Yujie Chi,

Hui Zhang, Jian Gao

et al.

Toxics, Journal Year: 2025, Volume and Issue: 13(5), P. 374 - 374

Published: May 5, 2025

Mussels are highly efficient filter feeders, playing a crucial role in managing eutrophication and assessing pollution. Although research on nanoplastic (NP) toxicity marine organisms is expanding, studies freshwater species remain limited despite ecosystems being disproportionately biodiverse vulnerable to pollutants. Here, we quantified the effects of polystyrene nanoplastics (PS-NPs, 50 nm) at concentrations 0, 2, 20, 200 μg/L different growth stages mussel Cristaria plicata. After 45-day exposure, PS-NPs ≥ 20 damaged intestinal epithelial cilia both age groups. Exposure significantly increased malondialdehyde levels decreased superoxide dismutase activity groups, with adults showing significant rise total protein content juveniles exhibiting marked increases respiratory ammonia excretion rates. Additionally, PS-NP exposure altered relative abundance gut microbial phyla, including Proteobacteria, Firmicutes, Verrucomicrobiota, Bacteroidota, Fusobacteriota also affected adults. Juveniles were more sensitive physiological changes, whereas exhibited greater microbiota shifts response exposure. Therefore, this study provides new insights into stage-specific integrity biochemical health mussels, underscoring need for targeted management strategies protect ecosystems.

Language: Английский

Citations

0
Dysregulation of gut barrier and microbiota in Asiatic hard clams (Meretrix petechialis) exposed to environmentally relevant Bisphenol A DOI
Xiaotian Wang, Zhongxu Wei,

Ruixin Ma

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121913 - 121913

Published: May 1, 2025

Language: Английский

Citations

0
Combined Toxicity of Polystyrene Nanoplastics and Pyriproxyfen to Daphnia magna DOI Open Access

Hua-Bing Jia,

Yuhang Zhang,

Rong-Yao Gao

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(10), P. 4066 - 4066

Published: May 13, 2024

In recent years, the adverse effects of nanoplastics (NPs) and pyriproxyfen on aquatic environments have attracted widespread attention. However, research their combined exposure to organisms could be more extensive. This work evaluated acute chronic toxic polystyrene NPs (PS-NPs) Daphnia magna (D. magna) under conditions. The addition PS-NPs within 24 h reduced toxicity D. magna, resulting in an increase 24-h EC50 values from 0.24 mg/L 0.35, 0.51, 1.26 mg/L, respectively when 1, 5, 10 were added. Compared with PS-NPs, significantly disturbed growth reproduction test at 21 days. caused by alleviated co-exposed. addition, it was observed that resulted less uptake using a time-gated imaging technique. These findings provide new insight into is important understand complex pollutants systems. Moreover, has provided scientific basis for environmental protection sustainable development.

Language: Английский

Citations

3
Biochar Alleviates Nanoplastics and Bisphenol a Mediated Immunological, Neurological and Gut Microbial Toxicity in Channel Catfish Ictalurus Punctatus DOI

Qingzhi Zheng,

Yufeng Zheng, Muhammad Junaid

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Application of Fluorescent Tracing Technology for Investigating the Effect of Microplastics and Nanoplastics on Biological Organisms DOI
Xueyi Li, Jun Li,

Haifeng Meng

et al.

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: 181, P. 118039 - 118039

Published: Nov. 5, 2024

Language: Английский

Citations

0
Effects of Polystyrene Nanoplastics and Pcb-44 Exposure on Growth and Physiological Biochemistry of Chlorella Vulgaris DOI

Qingzhi Zheng,

Maochun Wei,

Lei Yan

et al.

Published: Jan. 1, 2023

Both NPs and PCBs are emerging contaminants widely distributed in the environment, it is worth exploring whether combination of two causes serious pollution harm. Therefore, we studied effects PS-NPs PCB-44 alone together after 96 h 21 d exposure to C. pyrenoidosa. The results showed that affected cell cycle pyrenoidosa inhibited its normal growth. Physiologically, increased relative conductivity algal solution, decreased surface hydrophobicity cells, reduced synthesis chlorophyll a b. Biochemically, induced oxidative stress with significant changes enzymatic activities SOD CAT MDA content. Moreover, expression photosynthesis-related genes (psbA, rbcL, rbcS) all responded, negatively affecting photosynthesis. In particular, toxic were observed single co-exposure PCB-44, similar trends acute chronic experiments. Taken together, caused negative on growth physiological biochemistry These provide scientific information further explore aquatic organisms ecosystems.

Language: Английский

Citations

0