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28 results on '"Li, Qipei"'

10. Environmental Concentrations of Herbicide Prometryn Render Stress-Tolerant Corals Susceptible to Ocean Warming

Author

Zhou, Yanyu, Li, Qiuli, Zhang, Quan, Yuan, Meile, Zhu, Xiaoshan, Li, Yuanchao, Li, Qipei, Downs, Craig A., Huang, Danwei, Chou, Loke-Ming, and Zhao, Hongwei

Abstract

Global warming has caused the degradation of coral reefs around the world. While stress-tolerant corals have demonstrated the ability to acclimatize to ocean warming, it remains unclear whether they can sustain their thermal resilience when superimposed with other coastal environmental stressors. We report the combined impacts of a photosystem II (PSII) herbicide, prometryn, and ocean warming on the stress-tolerant coral Galaxea fascicularisthrough physiological and omics analyses. The results demonstrate that the heat-stress-induced inhibition of photosynthetic efficiency in G. fascicularisis exacerbated in the presence of prometryn. Transcriptomics and metabolomics analyses indicate that the prometryn exposure may overwhelm the photosystem repair mechanism in stress-tolerant corals, thereby compromising their capacity for thermal acclimation. Moreover, prometryn might amplify the adverse effects of heat stress on key energy and nutrient metabolism pathways and induce a stronger response to oxidative stress in stress-tolerant corals. The findings indicate that the presence of prometryn at environmentally relevant concentrations would render corals more susceptible to heat stress and exacerbate the breakdown of coral Symbiodiniaceae symbiosis. The present study provides valuable insights into the necessity of prioritizing PSII herbicide pollution reduction in coral reef protection efforts while mitigating the effects of climate change.

Published
2024
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11. A Simulation Framework of Unmanned Aerial Vehicles Route Planning Design and Validation for Landslide Monitoring.

Author

Xie, Dongmei, Hu, Ruifeng, Wang, Chisheng, Zhu, Chuanhua, Xu, Hui, and Li, Qipei

Subjects
FLIGHT planning (Aeronautics), AIRLINE routes, LANDSLIDES, FLIGHT testing, ONLINE monitoring systems, DRONE aircraft
Abstract

Unmanned aerial vehicles (UAVs) have emerged as a highly efficient means of monitoring landslide-prone regions, given the growing concern for urban safety and the increasing occurrence of landslides. Designing optimal UAV flight routes is crucial for effective landslide monitoring. However, in real-world scenarios, the testing and validating of flight path planning algorithms incur high cost and safety concerns, making overall flight operations challenging. Therefore, this paper proposes the use of the Unreal Engine simulation framework to design UAV flight path planning specifically for landslide monitoring. It aims to validate the authenticity of the simulated flight paths and the correctness of the algorithms. Under the proposed simulation framework, we then test a novel flight path planning algorithm. The simulation results demonstrate that the model reconstruction obtained using the novel flight path algorithm exhibits more detailed textures, with a 3D model simulation accuracy ranging from 10 to 14 cm. Among them, the RMSE value of the novel flight route algorithm falls within the range of 10 to 11 cm, exhibiting a 2 to 3 cm improvement in accuracy compared to the traditional flight path algorithm. Additionally, it effectively reduces the flight duration by 9.3% under the same flight path compared to conventional methods. The results confirm that the simulation framework developed in this paper meets the requirements for landslide damage monitoring and validates the feasibility and correctness of the UAV flight path planning algorithm. [ABSTRACT FROM AUTHOR]

Published
2023
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21. Using mussel as a global bioindicator of coastal microplastic pollution

Author

Li, Jiana, Lusher, Amy L, Rotchell, Jeanette M, Deudero, S. (Salud), Turra, Alexander, Bråte, Inger Lise N, Sun, Chengjun, Hossain, M Shahadat, Li, Qipei, and Kolandhasamy, Prabhu

Subjects
Bioindicator, Plastic pollution, Microplastic, Mussel
Abstract

The ubiquity and high bioavailability of microplastics have an unknown risk on the marine environment. Biomonitoring should be used to investigate biotic impacts of microplastic exposure. While many studies have used mussels as indicators for marine microplastic pollution, a robust and clear justification for their selection as indicator species is still lacking. Here, we review published literature from field investigations and laboratory experiments on microplastics in mussels and critically discuss the suitability and challenges of mussels as bioindicator for microplastic pollution. Mussels are suitable bioindicator for microplastic pollution because of their wide distribution, vital ecological niches, susceptibility to microplastic uptake and close connection with marine predators and human health. Field investigations highlight a wide occurrence of microplastics in mussels from all over the world, yet their abundance varies enormously. Problematically, these studies are not comparable due to the lack of a standardized approach, as well as temporal and spatial variability. Interestingly, microplastic abundance in field-collected mussels is closely related to human activity, and there is evidence for a positive and quantitative correlation between microplastics in mussels and surrounding waters. Laboratory studies collectively demonstrate that mussels may be good model organisms in revealing microplastic uptake, accumulation and toxicity. Consequently, we propose the use of mussels as target species to monitor microplastics and call for a uniform, efficient and economical approach that is suitable for a future large-scale monitoring program.

Published
2019

24. Using mussel as a global bioindicator of coastal microplastic pollution

Author

Li, Jiana, primary, Lusher, Amy L., additional, Rotchell, Jeanette M., additional, Deudero, Salud, additional, Turra, Alexander, additional, Bråte, Inger Lise N., additional, Sun, Chengjun, additional, Shahadat Hossain, M., additional, Li, Qipei, additional, Kolandhasamy, Prabhu, additional, and Shi, Huahong, additional

Published
2019
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25. Natural and Induced Mitochondrial Phosphate Carrier Loss

Author

Seifert, Erin L., primary, Gál, Aniko, additional, Acoba, Michelle G., additional, Li, Qipei, additional, Anderson-Pullinger, Lauren, additional, Golenár, Tunde, additional, Moffat, Cynthia, additional, Sondheimer, Neal, additional, Claypool, Steven M., additional, and Hajnóczky, György, additional

Published
2016
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26. Natural and Induced Mitochondrial Phosphate Carrier Loss: DIFFERENTIAL DEPENDENCE OF MITOCHONDRIAL METABOLISM AND DYNAMICS AND CELL SURVIVAL ON THE EXTENT OF DEPLETION.

Author

Seifert, Erin L., Gál, Aniko, Acoba, Michelle G., Li, Qipei, Anderson-Pullinger, Lauren, Golenár, Tünde, Moffat, Cynthia, Sondheimer, Neal, Claypool, Steven M., Hajnóczky, György, Seifert, Erin L., Gál, Aniko, Acoba, Michelle G., Li, Qipei, Anderson-Pullinger, Lauren, Golenár, Tünde, Moffat, Cynthia, Sondheimer, Neal, Claypool, Steven M., and Hajnóczky, György

Abstract

The relevance of mitochondrial phosphate carrier (PiC), encoded by SLC25A3, in bioenergetics is well accepted. However, little is known about the mechanisms mediating the cellular impairments induced by pathological SLC25A3 variants. To this end, we investigated the pathogenicity of a novel compound heterozygous mutation in SLC25A3 First, each variant was modeled in yeast, revealing that substituting GSSAS for QIP within the fifth matrix loop is incompatible with survival on non-fermentable substrate, whereas the L200W variant is functionally neutral. Next, using skin fibroblasts from an individual expressing these variants and HeLa cells with varying degrees of PiC depletion, PiC loss of ∼60% was still compatible with uncompromised maximal oxidative phosphorylation (oxphos), whereas lower maximal oxphos was evident at ∼85% PiC depletion. Furthermore, intact mutant fibroblasts displayed suppressed mitochondrial bioenergetics consistent with a lower substrate availability rather than phosphate limitation. This was accompanied by slowed proliferation in glucose-replete medium; however, proliferation ceased when only mitochondrial substrate was provided. Both mutant fibroblasts and HeLa cells with 60% PiC loss showed a less interconnected mitochondrial network and a mitochondrial fusion defect that is not explained by altered abundance of OPA1 or MFN1/2 or relative amount of different OPA1 forms. Altogether these results indicate that PiC depletion may need to be profound (>85%) to substantially affect maximal oxphos and that pathogenesis associated with PiC depletion or loss of function may be independent of phosphate limitation when ATP requirements are not high.

Published
2016

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