Linked Life Data

18689522

Source:http://linkedlifedata.com/resource/pubmed/id/18689522

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
19
pubmed:dateCreated
2008-9-26
pubmed:abstractText
This study measured total bacterial and denitrifier community abundances over time in an agricultural soil cropped to potatoes (Solanum tuberosum L.) by using quantitative PCR. Samples were collected on 10 dates from spring to autumn and from three spatial locations: in the potato "hill" between plants (H), close to the plant (H(p)), and in the "furrow" (F). The denitrification rates, N(2)O emissions, and environmental parameters were also measured. Changes in denitrifier abundance over time and spatial location were small (1.7- to 2.7-fold for the nirK, nosZ, and cnorB(B) guilds), whereas the cnorB(P) community (Pseudomonas mandelii and closely related spp.) showed an approximately 4.6-fold change. The seasonal patterns of denitrifier gene numbers varied with the specific community: lower nosZ gene numbers in April and May than in June and July, higher cnorB(P) gene numbers in May and June than in March and April and September and November, higher nirK gene numbers in early spring than in late autumn, and no change in cnorB(B) gene numbers. Gene numbers were higher for the H(p) than the H location for the nosZ and nirK communities and for the cnorB(P) community on individual dates, presumably indicating an effect of the plant on denitrifier abundance. Higher cnorB(P) gene numbers for the H location than the F location and for nosZ and cnorB(B) on individual dates reflect the effect of spatial location on abundance. Denitrifier abundance changes were not related to any environmental parameter, although a weak relationship exists between cnorB(P) gene numbers, extractable organic carbon values, and temperature. Denitrification and N(2)O emissions were mostly regulated by inorganic nitrogen availability and water-filled pore space but were uncoupled from denitrifier community abundances measured in this system.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-11055900, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-14766583, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-15488276, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-15939345, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-16417493, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-16689721, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-16793234, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-16885263, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-16957216, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-17014499, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-17205893, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-17449686, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-17686032, http://linkedlifedata.com/resource/pubmed/commentcorrection/18689522-18393993
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1098-5336
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
74
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5997-6005
pubmed:dateRevised
2010-9-22
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Changes in bacterial denitrifier community abundance over time in an agricultural field and their relationship with denitrification activity.
pubmed:affiliation
Agriculture and Agri-Food Canada, Potato Research Centre, Fredericton, New Brunswick, Canada E3B 4Z7.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't