Depth heterogeneity of lignin-degrading microbiome and organic carbon processing in mangrove sediments
Abstract Mangrove ecosystems are globally recognized for their blue carbon (C) sequestration capacity. Lignocellulosic detritus constitutes the primary C input to mangrove sediments, but the microbial processes involved in its bioprocessing remain unclear. Using lignocellulosic analysis and metageno...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | npj Biofilms and Microbiomes |
| Online Access: | https://doi.org/10.1038/s41522-024-00638-x |
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| author | Jijuan Ding Fei Liu Jiaxiong Zeng Hang Gu Jing Huang Bo Wu Longfei Shu Qingyun Yan Zhili He Cheng Wang |
| author_facet | Jijuan Ding Fei Liu Jiaxiong Zeng Hang Gu Jing Huang Bo Wu Longfei Shu Qingyun Yan Zhili He Cheng Wang |
| author_sort | Jijuan Ding |
| collection | DOAJ |
| description | Abstract Mangrove ecosystems are globally recognized for their blue carbon (C) sequestration capacity. Lignocellulosic detritus constitutes the primary C input to mangrove sediments, but the microbial processes involved in its bioprocessing remain unclear. Using lignocellulosic analysis and metagenomic sequencing across five 100-cm sediment cores, we found a high proportion of lignin (95.0–97.7%) within sediments’ lignocellulosic detritus, with a small fraction of lignin-degrading genes (1.24–1.98%) of lignin-degrading genes within the carbohydrate-active enzyme coding genes. Depth stratification was observed in genes and microbial communities involved in lignin depolymerization and mineralization of lignin monomer derivatives. Further microbe-centered analyses of biomass production rates and adaptive metabolism revealed diminished microbial C use efficiency potential and augmented “enzyme latch” with increasing sediment depths. These findings enhance our understanding of sedimentary organic C cycling and storage in coastal blue C ecosystems. |
| format | Article |
| id | doaj-art-b2c8338f325f4bc4b736eff3c2b3346c |
| institution | Kabale University |
| issn | 2055-5008 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Biofilms and Microbiomes |
| spelling | doaj-art-b2c8338f325f4bc4b736eff3c2b3346c2025-01-12T12:10:02ZengNature Portfolionpj Biofilms and Microbiomes2055-50082025-01-0111111310.1038/s41522-024-00638-xDepth heterogeneity of lignin-degrading microbiome and organic carbon processing in mangrove sedimentsJijuan Ding0Fei Liu1Jiaxiong Zeng2Hang Gu3Jing Huang4Bo Wu5Longfei Shu6Qingyun Yan7Zhili He8Cheng Wang9School of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversitySchool of Environmental Science and Engineering, Marine Synthetic Ecology Research Center, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory for Biocontrol, Sun Yat-sen UniversityAbstract Mangrove ecosystems are globally recognized for their blue carbon (C) sequestration capacity. Lignocellulosic detritus constitutes the primary C input to mangrove sediments, but the microbial processes involved in its bioprocessing remain unclear. Using lignocellulosic analysis and metagenomic sequencing across five 100-cm sediment cores, we found a high proportion of lignin (95.0–97.7%) within sediments’ lignocellulosic detritus, with a small fraction of lignin-degrading genes (1.24–1.98%) of lignin-degrading genes within the carbohydrate-active enzyme coding genes. Depth stratification was observed in genes and microbial communities involved in lignin depolymerization and mineralization of lignin monomer derivatives. Further microbe-centered analyses of biomass production rates and adaptive metabolism revealed diminished microbial C use efficiency potential and augmented “enzyme latch” with increasing sediment depths. These findings enhance our understanding of sedimentary organic C cycling and storage in coastal blue C ecosystems.https://doi.org/10.1038/s41522-024-00638-x |
| spellingShingle | Jijuan Ding Fei Liu Jiaxiong Zeng Hang Gu Jing Huang Bo Wu Longfei Shu Qingyun Yan Zhili He Cheng Wang Depth heterogeneity of lignin-degrading microbiome and organic carbon processing in mangrove sediments npj Biofilms and Microbiomes |
| title | Depth heterogeneity of lignin-degrading microbiome and organic carbon processing in mangrove sediments |
| title_full | Depth heterogeneity of lignin-degrading microbiome and organic carbon processing in mangrove sediments |
| title_fullStr | Depth heterogeneity of lignin-degrading microbiome and organic carbon processing in mangrove sediments |
| title_full_unstemmed | Depth heterogeneity of lignin-degrading microbiome and organic carbon processing in mangrove sediments |
| title_short | Depth heterogeneity of lignin-degrading microbiome and organic carbon processing in mangrove sediments |
| title_sort | depth heterogeneity of lignin degrading microbiome and organic carbon processing in mangrove sediments |
| url | https://doi.org/10.1038/s41522-024-00638-x |
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