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Establishment of a multiplex polymerase chain reaction detection assay for three common harmful microalgae in the East China Sea

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Abstract

It is urgent to develop techniques that can simultaneously detect multiple microalgae, due to the diversity of harmful algal blooms (HABs)-forming algal species. The target algae species in this study are Heterosigma akashiwo, Prorocentrum donghaiense and Karenia mikimotoi. These algae are the dominant species that cause HABs in the East China Sea, and the multiple detection technique focusing on these three algae is not common. Therefore, this study established a multiplex polymerase chain reaction(mPCR) to diagnose the three algae, which is simple and low cost. First, the corresponding specific primers were designed based on the D1-D2 region of the large subunit (LSU) ribosomal DNA sequence. Then, mPCR was established and the reaction conditions were optimized. And the specificity, sensitivity, and stability of mPCR were evaluated. The result of specificity test showed that the established mPCR had good specificity for the target microalgae and did not cross-react with eighteen non-target microalgae. The sensitivity of experiment was 3.3 × 10−1 ng μL−1, and the established mPCR was not affected by the interfering microalgae. Moreover, the practicability evaluation of mPCR by using the simulated natural water samples showed that the detection limit of target microalgae was 100 cells mL−1, which could meet the demand for early warning of HABs. In summary, the established mPCR is characterized by strong specificity, good stability, and multiple analysis to detect H. akashiwo, P. donghaiense, and K. mikimotoi.

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Acknowledgements

This work was supported by Shandong Provincial Natural Science Foundation, China (ZR2020MD081); the National Science Foundation of China (No. 31600309, 41476086); HIT Scientific Research Innovation Fund (No. 2022KYCXJJ07); and HIT Environment and Ecology Innovation Special Funds (No. HSCJ201622).

Funding

This work was supported by Shandong Provincial Natural Science Foundation, China (ZR2020MD081); the National Scientific Foundation of China (No. 31600309, 41476086); HIT Scientific Research Innovation Fund (No. 2022KYCXJJ07); and HIT Environment and Ecology Innovation Special Funds (No. HSCJ201622).

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Conceived and designed the experiments: Chunyun Zhang and Guofu Chen; Performed the experiments: Ganlin Wu; Analyzed the data: Yuanyuan Wang. Contributed reagents/ materials/analysis tools: Fuguo Liu. Wrote the paper: Ganlin Wu and Yihan Wang.

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Correspondence to Chunyun Zhang.

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All the authors would like to seriously state that: (a) the material used in this MS has not been published in whole or in part elsewhere; (b) the paper is not currently being considered for 372 publication elsewhere; (c) all authors have been personally and actively involved in substantive work leading to the report, and will hold themselves jointly and individually responsible for its content; and (d) all relevant ethical safeguards have been met in this study.

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We seriously declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work. There is also no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in or the review of the manuscript entitled “Establishment of a multiplex polymerase chain reaction detection assay for three common harmful microalgae in the East China Sea”.

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Wu, G., Liu, F., Chen, G. et al. Establishment of a multiplex polymerase chain reaction detection assay for three common harmful microalgae in the East China Sea. Environ Sci Pollut Res 30, 60500–60513 (2023). https://doi.org/10.1007/s11356-023-26821-9

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  • DOI: https://doi.org/10.1007/s11356-023-26821-9

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