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Article

L-Cysteine Synthase Enhanced Sulfide Biotransformation in Subtropical Marine Mangrove Sediments as Revealed by Metagenomics Analysis

1
State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Research Center for Microbial and Enzyme Engineering Technology, College of Life Science and Technology, Guangxi University, Nanning 530004, China
2
Guangxi Key Lab of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, China
3
School of Computer and Information Engineering, Nanning Normal University, Nanning 530299, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: Nicoletta Ademollo, Jasmin Rauseo, Luisa Patrolecco and Francesca Spataro
Water 2021, 13(21), 3053; https://doi.org/10.3390/w13213053
Received: 8 October 2021 / Revised: 22 October 2021 / Accepted: 29 October 2021 / Published: 1 November 2021
High sulfides concentrations can be poisonous to environment because of anthropogenic waste production or natural occurrences. How to elucidate the biological transformation mechanisms of sulfide pollutants in the subtropical marine mangrove ecosystem has gained increased interest. Thus, in the present study, the sulfide biotransformation in subtropical mangroves ecosystem was accurately evaluated using metagenomic sequencing and quantitative polymerase chain reaction analysis. Most abundant genes were related to the organic sulfur transformation. Furthermore, an ecological model of sulfide conversion was constructed. Total phosphorus was the dominant environmental factor that drove the sulfur cycle and microbial communities. We compared mangrove and non-mangrove soils and found that the former enhanced metabolism that was related to sulfate reduction when compared to the latter. Total organic carbon, total organic nitrogen, iron, and available sulfur were the key environmental factors that effectively influenced the dissimilatory sulfate reduction. The taxonomic assignment of dissimilatory sulfate-reducing genes revealed that Desulfobacterales and Chromatiales were mainly responsible for sulfate reduction. Chromatiales were most sensitive to environmental factors. The high abundance of cysE and cysK could contribute to the coping of the microbial community with the toxic sulfide produced by Desulfobacterales. Collectively, these findings provided a theoretical basis for the mechanism of the sulfur cycle in subtropical mangrove ecosystems. View Full-Text
Keywords: sulfate-reduction gene families; subtropical mangrove sediment; sulfide; metagenomics; L-cysteine synthase sulfate-reduction gene families; subtropical mangrove sediment; sulfide; metagenomics; L-cysteine synthase
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MDPI and ACS Style

Mo, S.; Li, J.; Li, B.; Kashif, M.; Nie, S.; Liao, J.; Su, G.; Jiang, Q.; Yan, B.; Jiang, C. L-Cysteine Synthase Enhanced Sulfide Biotransformation in Subtropical Marine Mangrove Sediments as Revealed by Metagenomics Analysis. Water 2021, 13, 3053. https://doi.org/10.3390/w13213053

AMA Style

Mo S, Li J, Li B, Kashif M, Nie S, Liao J, Su G, Jiang Q, Yan B, Jiang C. L-Cysteine Synthase Enhanced Sulfide Biotransformation in Subtropical Marine Mangrove Sediments as Revealed by Metagenomics Analysis. Water. 2021; 13(21):3053. https://doi.org/10.3390/w13213053

Chicago/Turabian Style

Mo, Shuming, Jinhui Li, Bin Li, Muhammad Kashif, Shiqing Nie, Jianping Liao, Guijiao Su, Qiong Jiang, Bing Yan, and Chengjian Jiang. 2021. "L-Cysteine Synthase Enhanced Sulfide Biotransformation in Subtropical Marine Mangrove Sediments as Revealed by Metagenomics Analysis" Water 13, no. 21: 3053. https://doi.org/10.3390/w13213053

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