In this section
@article{Liang:2023:10.1038/s41467-023-40768-y,
author = {Liang, G and Stark, J and Waring, B},
doi = {10.1038/s41467-023-40768-y},
journal = {Nature Communications},
pages = {1--10},
title = {Mineral reactivity determines root effects on soil organic carbon},
url = {http://dx.doi.org/10.1038/s41467-023-40768-y},
volume = {14},
year = {2023}
}
TY - JOUR
AB - Modern conceptual models of soil organic carbon (SOC) cycling focus heavily on the microbe-mineral interactions that regulate C stabilization. However, the formation of ‘stable’ (i.e. slowly cycling) soil organic matter, which consists mainly of microbial residues associated with mineral surfaces, is inextricably linked to C loss through microbial respiration. Therefore, what is the net impact of microbial metabolism on the total quantity of C held in the soil? To address this question, we constructed artificial root-soil systems to identify controls on C cycling across the plant-microbe-mineral continuum, simultaneously quantifying the formation of mineral-associated C and SOC losses to respiration. Here we show that root exudates and minerals interacted to regulate these processes: while roots stimulated respiratory C losses and depleted mineral-associated C pools in low-activity clays, root exudates triggered formation of stable C in high-activity clays. Moreover, we observed a positive correlation between the formation of mineral-associated C and respiration. This suggests that the growth of slow-cycling C pools comes at the expense of C loss from the system.
AU - Liang,G
AU - Stark,J
AU - Waring,B
DO - 10.1038/s41467-023-40768-y
EP - 10
PY - 2023///
SN - 2041-1723
SP - 1
TI - Mineral reactivity determines root effects on soil organic carbon
T2 - Nature Communications
UR - http://dx.doi.org/10.1038/s41467-023-40768-y
UR - https://www.nature.com/articles/s41467-023-40768-y
UR - http://hdl.handle.net/10044/1/106090
VL - 14
ER -
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