Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions | |
Feng, Xuehui1; Qin, Shuqi1; Zhang, Dianye; Chen, Pengdong1,2; Hu, Jie1; Wang, Guanqin1; Liu, Yang; Wei, Bin1; Li, Qinlu1; Yang, Yuanhe1 | |
刊名 | GLOBAL CHANGE BIOLOGY |
2022 | |
卷号 | 28期号:16页码:4845-4860 |
关键词 | carbon use efficiency carbon-nitrogen interaction microbial growth microbial physiology mineral protection soil C accessibility |
ISSN号 | 1354-1013 |
DOI | 10.1111/gcb.16229 |
文献子类 | Article |
英文摘要 | Microbial growth and respiration are at the core of the soil carbon (C) cycle, as these microbial physiological performances ultimately determine the fate of soil C. Microbial C use efficiency (CUE), a critical metric to characterize the partitioning of C between microbial growth and respiration, thus controls the sign and magnitude of soil C-climate feedback. Despite its importance, the response of CUE to nitrogen (N) input and the relevant regulatory mechanisms remain poorly understood, leading to large uncertainties in predicting soil C dynamics under continuous N input. By combining a multi-level field N addition experiment with a substrate-independent O-18-H2O labelling approach as well as high-throughput sequencing and mineral analysis, here we elucidated how N-induced changes in plant-microbial-mineral interactions drove the responses of microbial CUE to N input. We found that microbial CUE increased significantly as a consequence of enhanced microbial growth after 6-year N addition. In contrast to the prevailing view, the elevated microbial growth and CUE were not mainly driven by the reduced stoichiometric imbalance, but strongly associated with the increased soil C accessibility from weakened mineral protection. Such attenuated organo-mineral association was further linked to the N-induced changes in the plant community and the increased oxalic acid in the soil. These findings provide empirical evidence for the tight linkage between mineral-associated C dynamics and microbial physiology, highlighting the need to disentangle the complex plant-microbe-mineral interactions to improve soil C prediction under anthropogenic N input. |
学科主题 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
电子版国际标准刊号 | 1365-2486 |
出版地 | HOBOKEN |
WOS关键词 | SOIL ORGANIC-MATTER ; FUMIGATION-EXTRACTION METHOD ; BIOMASS CALIBRATION ; STOICHIOMETRY ; DEPOSITION ; DIVERSITY ; TURNOVER ; FERTILIZATION ; UNCERTAINTY ; ADDITIONS |
WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
语种 | 英语 |
出版者 | WILEY |
WOS记录号 | WOS:000804481900001 |
资助机构 | National Natural Science Foundation of China [31825006, 31922054, 31988102, 42141006] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA26010101] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program [2019QZKK0106, 2019QZKK0302] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences [Y2021031] |
内容类型 | 期刊论文 |
源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28625] |
专题 | 植被与环境变化国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan, Peoples R China |
推荐引用方式 GB/T 7714 | Feng, Xuehui,Qin, Shuqi,Zhang, Dianye,et al. Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions[J]. GLOBAL CHANGE BIOLOGY,2022,28(16):4845-4860. |
APA | Feng, Xuehui.,Qin, Shuqi.,Zhang, Dianye.,Chen, Pengdong.,Hu, Jie.,...&Chen, Leiyi.(2022).Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions.GLOBAL CHANGE BIOLOGY,28(16),4845-4860. |
MLA | Feng, Xuehui,et al."Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions".GLOBAL CHANGE BIOLOGY 28.16(2022):4845-4860. |
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