@article{fdi:010073627,
  title = {{H}igh carbon use efficiency and low priming effect promote soil {C} stabilization under reduced tillage},
  author = {{S}auvadet, {M}arie and {L}ashermes, {G}. and {A}lavoine, {G}. and {R}ecous, {S}. and {C}hauvat, {M}. and {M}aron, {P}. {A}. and {B}ertrand, {I}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}ncreasing the accumulation of organic carbon ({C}) in soils is a crucial challenge both for soil fertility and for climate change mitigation. {H}eterotrophic microbial communities are key drivers of {C} cycling in the soil and are influenced by cultural practices, among other factors. {H}owever, whether changes in microbial communities in turn affect their {C} degradation functions is not well understood. {H}ere, we studied the effects of prior soil management on the microbial taxonomic composition and activity of soils amended with wheat litter. {P}rior soil management was either conventional ({CONV}) (i.e., full inversion ploughing) or reduced tillage ({RT}) during a 5 year period in the same loamy soil in northern {F}rance. {S}oil samples taken from the top 5 cm of field plots were incubated with {C}-13-labelled litter of either flowering wheat or mature wheat for 29 days at 15 degrees {C}. {W}e measured the {C}-{CO}2 and {C}-13-{CO}2, microbial biomass {C} ({MBC}) and {C}-13, and hydrolytic enzyme activities during decomposition. {T}he initial bacterial and fungal community diversity was studied via high-throughput sequencing of ribosomal genes. {T}he results showed that the {MBC} in the {RT} soil was initially 1.5-fold greater than that in the {CONV} soil; contrasting taxonomic compositions were also recorded. {T}he soil biotic legacy impacted the degradation functions when the soils were amended with wheat litter. {C}ompared with that in the {CONV} soil, the enzymatic efficiency of microorganisms in the {RT} soil increased by 49% and 61% in the presence of mature and flowering wheat litter, respectively. {E}nzyme efficiency was positively correlated with microbial litter {C} use efficiency ({CUE}) (r = 0.92, {P}-{V}alue < 0.001) but negatively associated with the priming effect ({PE}) (r = -0.85, {P} value < 0.001) across all soils and litter treatments. {T}hese findings demonstrated that the {RT} soil benefited both from an increase in litter {C} incorporated in the microbial biomass and from a reduction in soil {C} loss due to the {PE}, regardless of the quality of the decomposed litter. {O}ur study indicated that agricultural practices such as {RT}, which enriches the amount of soil organic {C} ({SOC}) in the topsoil layer, can lead to positive feedback against {C} stabilization functions.},
  keywords = {{S}oil ; {D}ecomposition ; {L}itter ; {CUE} ; {E}nzymes ; {P}riming effect ; {C}-13 ; {FRANCE}},
  booktitle = {},
  journal = {{S}oil {B}iology and {B}iochemistry},
  volume = {123},
  numero = {},
  pages = {64--73},
  ISSN = {0038-0717},
  year = {2018},
  DOI = {10.1016/j.soilbio.2018.04.026},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073627},
}