1
|
Yang M, Liu N, Wang B, Li Y, Li W, Shi X, Yue X, Liu CQ. Stepwise degradation of organic matters driven by microbial interactions in China΄s coastal wetlands: Evidence from carbon isotope analysis. WATER RESEARCH 2024; 250:121062. [PMID: 38157604 DOI: 10.1016/j.watres.2023.121062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 12/05/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
The microbial "unseen majority" as drivers of carbon cycle represent a significant source of uncertain climate change. To comprehend the resilience of life forms on Earth to climate change, it is crucial to incorporate knowledge of intricate microbial interactions and their impact to carbon transformation. Combined with carbon stable isotope analysis and high-throughput sequencing technology, the underlying mechanism of microbial interactions for organic carbon degradation has been elucidated. Niche differentiation enabled archaea to coexist with bacteria mainly in a cooperative manner. Bacteria composed of specialists preferred to degrade lighter carbon, while archaea were capable of utilizing heavier carbon. Microbial resource-dependent interactions drove stepwise degradation of organic matter. Bacterial cooperation directly facilitated the degradation of algae-dominated particulate organic carbon, while competitive feeding of archaea caused by resource scarcity significantly promoted the mineralization of heavier particulate organic carbon and then the release of dissolved inorganic carbon. Meanwhile, archaea functioned as a primary decomposer and collaborated with bacteria in the gradual degradation of dissolved organic carbon. This study emphasized microbial interactions driving carbon cycle and provided new perspectives for incorporating microorganisms into carbon biogeochemical models.
Collapse
Affiliation(s)
- Meiling Yang
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China; Bohai Coastal Critical Zone National Observation and Research Station, Tianjin University, Tianjin 300072, China
| | - Na Liu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Baoli Wang
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China; Bohai Coastal Critical Zone National Observation and Research Station, Tianjin University, Tianjin 300072, China.
| | - Yajun Li
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Wanzhu Li
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Xinjie Shi
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Xinrui Yue
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Cong-Qiang Liu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China; Bohai Coastal Critical Zone National Observation and Research Station, Tianjin University, Tianjin 300072, China
| |
Collapse
|
2
|
Li Q, Song Z, Xia S, Kuzyakov Y, Yu C, Fang Y, Chen J, Wang Y, Shi Y, Luo Y, Li Y, Chen J, Wang W, Zhang J, Fu X, Vancov T, Van Zwieten L, Liu CQ, Wang H. Microbial Necromass, Lignin, and Glycoproteins for Determining and Optimizing Blue Carbon Formation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:468-479. [PMID: 38141044 DOI: 10.1021/acs.est.3c08229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
Coastal wetlands contribute to the mitigation of climate change through the sequestration of "blue carbon". Microbial necromass, lignin, and glycoproteins (i.e., glomalin-related soil proteins (GRSP)), as important components of soil organic carbon (SOC), are sensitive to environmental change. However, their contributions to blue carbon formation and the underlying factors remain largely unresolved. To address this paucity of knowledge, we investigated their contributions to blue carbon formation along a salinity gradient in coastal marshes. Our results revealed decreasing contributions of microbial necromass and lignin to blue carbon as the salinity increased, while GRSP showed an opposite trend. Using random forest models, we showed that their contributions to SOC were dependent on microbial biomass and resource stoichiometry. In N-limited saline soils, contributions of microbial necromass to SOC decreased due to increased N-acquisition enzyme activity. Decreases in lignin contributions were linked to reduced mineral protection offered by short-range-ordered Fe (FeSRO). Partial least-squares path modeling (PLS-PM) further indicated that GRSP could increase microbial necromass and lignin formation by enhancing mineral protection. Our findings have implications for improving the accumulation of refractory and mineral-bound organic matter in coastal wetlands, considering the current scenario of heightened nutrient discharge and sea-level rise.
Collapse
Affiliation(s)
- Qiang Li
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300192, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
| | - Zhaoliang Song
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300192, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
| | - Shaopan Xia
- Institute of Resource, Ecosystem and Environment of Agriculture, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yakov Kuzyakov
- Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Goettingen, Göttingen 37077, Germany
- Institute of Environmental Sciences, Kazan Federal University, Kazan 420049, Russia
- Peoples Friendship University of Russia (RUDN University), Moscow 117198, Russia
| | - Changxun Yu
- Department of Biology and Environmental Science, Linnaeus University, Kalmar 39231, Sweden
| | - Yunying Fang
- Australian Rivers Institute, School of Environment and Science, Griffith University, Nathan 4111, Australia
| | - Ji Chen
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
- Department of Agroecology, Aarhus University, Tjele 8830, Denmark
| | - Yidong Wang
- Tianjin Key Laboratory of Water Resources and Environment, & School of Geographic and Environmental Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Yu Shi
- School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Yu Luo
- Institute of Soil & Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Yongchun Li
- School of Environmental and Resource Sciences, Zhejiang A&F University, Zhejiang, Hangzhou 311300, China
| | - Junhui Chen
- School of Environmental and Resource Sciences, Zhejiang A&F University, Zhejiang, Hangzhou 311300, China
| | - Wei Wang
- Department of Ecology, College of Urban and Environmental Sciences and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China
| | - Jianchao Zhang
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300192, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
| | - Xiaoli Fu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300192, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
| | - Tony Vancov
- NSW Department of Planning, Industry & Environment, Elizabeth Macarthur Agricultural Institute, Menangle, NSW 2568, Australia
| | - Lukas Van Zwieten
- Wollongbar Primary Industries Institute, NSW Department of Primary Industries, Wollongbar, NSW 2477, Australia
| | - Cong-Qiang Liu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300192, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
| | - Hailong Wang
- Institute of Soil & Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
- School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, China
| |
Collapse
|