title: Abundance, diversity and spatio-temporal dynamics of nirS gene-harbouring denitrifiers in a potato field over the course of a growth season.
abstract: The abundance and diversity of nirS-harbouring bacteria were evaluated in a potato field during a growth season using culture-independent techniques. A total of 182 operational taxonomical units were identified and most had low homology to known nirS sequences, which suggested the discovery of new denitrifiers. The diversity was significantly higher in the furrow, followed by the hill and the near-plant region and was inversely proportional to the denitrification enzyme activity. In contrast, the abundance was not altered by soil locations but was significantly lower at the end of the growth season.
authors.affiliation: Université de Moncton, Department of Biology, Moncton, NB, Canada E1A 3E9.
authors.forename: Amy
authors.initials: A
authors.lastname: Novinscak
authors.forename: Claudia
authors.initials: C
authors.lastname: Goyer
authors.forename: Catherine E
authors.initials: CE
authors.lastname: Dandie
authors.forename: Martin
authors.initials: M
authors.lastname: Filion
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000302:isolation & purification* / Q000378:metabolism; D001426:Bacterial Proteins / Q000235:genetics*; D044822:Biodiversity; D058440:Denitrification; D008969:Molecular Sequence Data; D012621:Seasons; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D011198:Solanum tuberosum / Q000382:microbiology*
chemical_list: D001426:Bacterial Proteins