@article{fdi:010055742,
  title = {{D}ynamics of bacterial communities in relation to soil aggregate formation during the decomposition of {C}-13-labelled rice straw},
  author = {{B}laud, {A}. and {L}erch, {T}. {Z}. and {C}hevallier, {T}iphaine and {N}unan, {N}. and {C}henu, {C}. and {B}rauman, {A}lain},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he addition of fresh organic matter is known to modify both microbial community structure and soil aggregation. {T}he objective of this study was to understand the relationship between the dynamics of the soil microbial community structure in relation to that of their habitats during the decomposition of straw. {S}oil samples, ground (<200 mu m) to remove macroaggregates, were amended with uniformly {C}-13-labelled powdered rice straw (<500 mu m) and incubated for 21 days. {U}namended control samples were also incubated under the same conditions. {T}otal {C} and rice straw {C} ({C}-{S}traw) mineralised or remaining in different soil fractions (0-50, 50-200, 200-2000 and >2000 mu m) were measured. {F}atty acid methyl ester ({FAME}) profiling was used to determine total bacterial community structure and {FAME} based stable isotope probing ({FAME}-{SIP}) was used to characterise the straw degrader communities. {T}he mineralisation rate of the native {C} and the {C}-{S}traw was high. {T}he formation of macroaggregates (>2000 mu m) occurred within 2 days in amended and unamended samples but did so to a greater extent in the amended samples. {T}he {C}-{S}traw was mainly located in fractions >200 mu m, where degraders were the most abundant. {T}he {C}-13-{FAME} profiles followed the same trends as total {FAME} profiles through time and within soil fractions, suggesting common dynamics between straw degraders and total bacterial communities: {G}ram-negative were more important in fraction >200 mu m and during the early stages of the incubation while {G}ram-positive and actinobacteria dominated in fine fractions and at the end of the incubation. {B}acterial community structure changed rapidly (within 2 days) in conjunction with the formation of new microbial habitats, suggesting that the relationship between the two is very close.},
  keywords = {{S}oil bacterial communities structure ; {C}-13-labelling ; {FAME}-{SIP} ; {S}oil aggregation ; {M}ineralisation ; {M}icroscale biogeography},
  booktitle = {},
  journal = {{A}pplied {S}oil {E}cology},
  volume = {53},
  numero = {},
  pages = {1--9},
  ISSN = {0929-1393},
  year = {2012},
  DOI = {10.1016/j.apsoil.2011.11.005},
  URL = {https://www.documentation.ird.fr/hor/fdi:010055742},
}