TY - JOUR
T1 - Long-term elevated precipitation induces grassland soil carbon loss via microbe-plant–soil interplay
AU - Wang, Mengmeng
AU - Sun, Xin
AU - Cao, Baichuan
AU - Chiariello, Nona R.
AU - Docherty, Kathryn M.
AU - Field, Christopher B.
AU - Gao, Qun
AU - Gutknecht, Jessica L.M.
AU - Guo, Xue
AU - He, Genhe
AU - Hungate, Bruce A.
AU - Lei, Jiesi
AU - Niboyet, Audrey
AU - Le Roux, Xavier
AU - Shi, Zhou
AU - Shu, Wensheng
AU - Yuan, Mengting
AU - Zhou, Jizhong
AU - Yang, Yunfeng
N1 - Funding Information:
The authors wish to thank the staff of the Jasper Ridge Global Change Experiment for site preservation and sampling assistance. This study was supported the National Natural Science Foundation of China grant (41825016/32161123002/42007297), Office of the Vice President for Research at the University of Oklahoma, Office of Science and Office of Biological and Environmental Research (DOE‐BER) of the U.S. Department of Energy Genomic Science Program grant DE‐SC0004601 and DE‐SC0010715, the US National Science Foundation grant DEB‐0092642/0445324, the Packard Foundation, the Morgan Family Foundation, the Second Tibetan Plateau Scientific Expedition and Research (STEP) Program grant 2019QZKK0503, Guangdong Basis and Applied Basic Research Foundation grant (2019A1515110345/2021A1515011497), Science & Technology Fundamental Resources Investigation Program grant 2019FY100700, the Key Technology R&D Program of Jiangxi Province grant 20223BBG74S02, G. Evelyn Hutchinson postdoctoral fellowship from Yale Institute for Biospheric Studies at Yale University, the Simons Foundation postdoctoral fellowship in Marine Microbial Ecology, the French Institute of Agriculture, Food and Environment Research (INRAE, ECODIV Department), and the French CNRS/INSU—EC2CO Program (project INTERACT).
Funding Information:
The authors wish to thank the staff of the Jasper Ridge Global Change Experiment for site preservation and sampling assistance. This study was supported the National Natural Science Foundation of China grant (41825016/32161123002/42007297), Office of the Vice President for Research at the University of Oklahoma, Office of Science and Office of Biological and Environmental Research (DOE-BER) of the U.S. Department of Energy Genomic Science Program grant DE-SC0004601 and DE-SC0010715, the US National Science Foundation grant DEB-0092642/0445324, the Packard Foundation, the Morgan Family Foundation, the Second Tibetan Plateau Scientific Expedition and Research (STEP) Program grant 2019QZKK0503, Guangdong Basis and Applied Basic Research Foundation grant (2019A1515110345/2021A1515011497), Science & Technology Fundamental Resources Investigation Program grant 2019FY100700, the Key Technology R&D Program of Jiangxi Province grant 20223BBG74S02, G. Evelyn Hutchinson postdoctoral fellowship from Yale Institute for Biospheric Studies at Yale University, the Simons Foundation postdoctoral fellowship in Marine Microbial Ecology, the French Institute of Agriculture, Food and Environment Research (INRAE, ECODIV Department), and the French CNRS/INSU—EC2CO Program (project INTERACT).
Publisher Copyright:
© 2023 John Wiley & Sons Ltd.
PY - 2023/9
Y1 - 2023/9
N2 - Global climate models predict that the frequency and intensity of precipitation events will increase in many regions across the world. However, the biosphere-climate feedback to elevated precipitation (eP) remains elusive. Here, we report a study on one of the longest field experiments assessing the effects of eP, alone or in combination with other climate change drivers such as elevated CO2 (eCO2), warming and nitrogen deposition. Soil total carbon (C) decreased after a decade of eP treatment, while plant root production decreased after 2 years. To explain this asynchrony, we found that the relative abundances of fungal genes associated with chitin and protein degradation increased and were positively correlated with bacteriophage genes, suggesting a potential viral shunt in C degradation. In addition, eP increased the relative abundances of microbial stress tolerance genes, which are essential for coping with environmental stressors. Microbial responses to eP were phylogenetically conserved. The effects of eP on soil total C, root production, and microbes were interactively affected by eCO2. Collectively, we demonstrate that long-term eP induces soil C loss, owing to changes in microbial community composition, functional traits, root production, and soil moisture. Our study unveils an important, previously unknown biosphere-climate feedback in Mediterranean-type water-limited ecosystems, namely how eP induces soil C loss via microbe-plant–soil interplay.
AB - Global climate models predict that the frequency and intensity of precipitation events will increase in many regions across the world. However, the biosphere-climate feedback to elevated precipitation (eP) remains elusive. Here, we report a study on one of the longest field experiments assessing the effects of eP, alone or in combination with other climate change drivers such as elevated CO2 (eCO2), warming and nitrogen deposition. Soil total carbon (C) decreased after a decade of eP treatment, while plant root production decreased after 2 years. To explain this asynchrony, we found that the relative abundances of fungal genes associated with chitin and protein degradation increased and were positively correlated with bacteriophage genes, suggesting a potential viral shunt in C degradation. In addition, eP increased the relative abundances of microbial stress tolerance genes, which are essential for coping with environmental stressors. Microbial responses to eP were phylogenetically conserved. The effects of eP on soil total C, root production, and microbes were interactively affected by eCO2. Collectively, we demonstrate that long-term eP induces soil C loss, owing to changes in microbial community composition, functional traits, root production, and soil moisture. Our study unveils an important, previously unknown biosphere-climate feedback in Mediterranean-type water-limited ecosystems, namely how eP induces soil C loss via microbe-plant–soil interplay.
KW - elevated precipitation
KW - microbial functional trait
KW - resource acquisition
KW - soil carbon loss
KW - viral shunt
KW - water-limited ecosystems
UR - http://www.scopus.com/inward/record.url?scp=85161813002&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85161813002&partnerID=8YFLogxK
U2 - 10.1111/gcb.16811
DO - 10.1111/gcb.16811
M3 - Article
C2 - 37317051
AN - SCOPUS:85161813002
SN - 1354-1013
VL - 29
SP - 5429
EP - 5444
JO - Global change biology
JF - Global change biology
IS - 18
ER -