@article{fdi:010049468,
  title = {{S}hifts in size, genetic structure and activity of the soil denitrifier community by nematode grazing},
  author = {{D}jigal, {D}jibril and {B}audoin, {E}z{\'e}kiel and {P}hilippot, {L}. and {B}rauman, {A}lain and {V}illenave, {C}{\'e}cile},
  editor = {},
  language = {{ENG}},
  abstract = {{B}acterial-feeding nematodes represent an important driver of the soil microbial activity and diversity. {T}his study aimed at characterizing the impact of nematode grazing on a model functional bacterial guild involved in {N}-cycling, the denitrifiers. {B}acterial-feeding nematodes ({C}ephalobus pseudoparvus) were inoculated into soil microcosms whose indigenous nematofauna had previously been removed. {T}he size, genetic structure and activity of the soil denitrifier community were characterized 15 and 45 days after nematodes inoculation using quantitative {PCR} of the nir{K}, nir{S} and nos{Z} denitrification genes, fingerprinting of the nir{K} and nir{S} genes and denitrification enzyme activity measurements, respectively. {A} significant impact of {C} pseudoparvus was observed on genetic structure of the nir{K} community, mainly due to shifts in the relative abundance of the dominant populations, but not on the nir{S} community. {T}he grazing pressure also tended to decrease the density of all denitrification genes as well as that of 165 r{RNA} genes. {D}espite being non-significant, the extent of this decline in gene copy numbers ranged between 60 and 80% of the control microcosm genes densities. {F}inally, compared to non-inoculated microcosms, denitrification activity significantly decreased by 8% in response to the nematodes inoculation. {T}he herewith data showed that predation by a single species of bacterial-feeding nematode can affect the soil denitrifier community.},
  keywords = {{S}oil bacterial-feeding nematodes ; {C}ephalobus pseudoparvus ; {D}enitrifiers ; q{PCR} ; {DGGE}},
  booktitle = {},
  journal = {{E}uropean {J}ournal of {S}oil {B}iology},
  volume = {46},
  numero = {2},
  pages = {112--118},
  ISSN = {1164-5563},
  year = {2010},
  DOI = {10.1016/j.ejsobi.2009.12.001},
  URL = {https://www.documentation.ird.fr/hor/fdi:010049468},
}