Constraining the conditions conducive to dissimilatory nitrate reduction to ammonium in temperate arable soils

Christoph S. Schmidt, David J. Richardson, Elizabeth M. Baggs

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Here we offer the first assessment of conditions conducive to dissimilatory nitrate reduction to ammonium (DNRA) in temperate arable soils, through an examination of the potential for this process to occur in a range of soils of contrasting characteristics. (NH4NO3)-N-15 (6.2 g N m(-2), 25 atom % excess N-15) was applied, and recovery of N-15 in the NH4+ pool taken as indicative of occurrence of DNRA. Up to 5% of applied N-15 was recovered in the NH4+ pool 2 d after addition of N, glucose (44.6 g C m(-2)) and L-cysteine (7.7 g m(-2), 0.9 g N m(-2), 2.3 g C m(-2)). N-15-NH4+ concentrations were positively correlated with soil pH, C-to-NO3- ratio, bulk density, sand content and NO2- concentration, but negatively correlated with soil C and organic N content. Our results demonstrate the potential for DNRA to contribute to N cycling in temperate arable soils, but its detection and significance is likely to depend on the provision of a low molecular weight C source. (C) 2011 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1607-1611
Number of pages5
JournalSoil Biology and Biochemistry
Volume43
Issue number7
DOIs
Publication statusPublished - Jul 2011

Keywords

  • dissimilatory nitrate reduction to ammonium
  • nitrate ammonification
  • nitrous oxide
  • stable isotopes
  • Chilean nothofagus forest
  • humid tropical foest
  • escherichia-coli
  • nitrous-oxide
  • nitrite
  • denitrification
  • accumulation
  • competition
  • sediments
  • plants

Cite this

Constraining the conditions conducive to dissimilatory nitrate reduction to ammonium in temperate arable soils. / Schmidt, Christoph S.; Richardson, David J.; Baggs, Elizabeth M.

In: Soil Biology and Biochemistry, Vol. 43, No. 7, 07.2011, p. 1607-1611.

Research output: Contribution to journalArticle

Schmidt, Christoph S. ; Richardson, David J. ; Baggs, Elizabeth M. / Constraining the conditions conducive to dissimilatory nitrate reduction to ammonium in temperate arable soils. In: Soil Biology and Biochemistry. 2011 ; Vol. 43, No. 7. pp. 1607-1611.
@article{2d5a605a904f42158bf2fbbb3f26bef3,
title = "Constraining the conditions conducive to dissimilatory nitrate reduction to ammonium in temperate arable soils",
abstract = "Here we offer the first assessment of conditions conducive to dissimilatory nitrate reduction to ammonium (DNRA) in temperate arable soils, through an examination of the potential for this process to occur in a range of soils of contrasting characteristics. (NH4NO3)-N-15 (6.2 g N m(-2), 25 atom {\%} excess N-15) was applied, and recovery of N-15 in the NH4+ pool taken as indicative of occurrence of DNRA. Up to 5{\%} of applied N-15 was recovered in the NH4+ pool 2 d after addition of N, glucose (44.6 g C m(-2)) and L-cysteine (7.7 g m(-2), 0.9 g N m(-2), 2.3 g C m(-2)). N-15-NH4+ concentrations were positively correlated with soil pH, C-to-NO3- ratio, bulk density, sand content and NO2- concentration, but negatively correlated with soil C and organic N content. Our results demonstrate the potential for DNRA to contribute to N cycling in temperate arable soils, but its detection and significance is likely to depend on the provision of a low molecular weight C source. (C) 2011 Elsevier Ltd. All rights reserved.",
keywords = "dissimilatory nitrate reduction to ammonium, nitrate ammonification, nitrous oxide, stable isotopes, Chilean nothofagus forest, humid tropical foest, escherichia-coli, nitrous-oxide, nitrite, denitrification, accumulation, competition, sediments, plants",
author = "Schmidt, {Christoph S.} and Richardson, {David J.} and Baggs, {Elizabeth M.}",
year = "2011",
month = "7",
doi = "10.1016/j.soilbio.2011.02.015",
language = "English",
volume = "43",
pages = "1607--1611",
journal = "Soil Biology and Biochemistry",
issn = "0038-0717",
publisher = "Elsevier Limited",
number = "7",

}

TY - JOUR

T1 - Constraining the conditions conducive to dissimilatory nitrate reduction to ammonium in temperate arable soils

AU - Schmidt, Christoph S.

AU - Richardson, David J.

AU - Baggs, Elizabeth M.

PY - 2011/7

Y1 - 2011/7

N2 - Here we offer the first assessment of conditions conducive to dissimilatory nitrate reduction to ammonium (DNRA) in temperate arable soils, through an examination of the potential for this process to occur in a range of soils of contrasting characteristics. (NH4NO3)-N-15 (6.2 g N m(-2), 25 atom % excess N-15) was applied, and recovery of N-15 in the NH4+ pool taken as indicative of occurrence of DNRA. Up to 5% of applied N-15 was recovered in the NH4+ pool 2 d after addition of N, glucose (44.6 g C m(-2)) and L-cysteine (7.7 g m(-2), 0.9 g N m(-2), 2.3 g C m(-2)). N-15-NH4+ concentrations were positively correlated with soil pH, C-to-NO3- ratio, bulk density, sand content and NO2- concentration, but negatively correlated with soil C and organic N content. Our results demonstrate the potential for DNRA to contribute to N cycling in temperate arable soils, but its detection and significance is likely to depend on the provision of a low molecular weight C source. (C) 2011 Elsevier Ltd. All rights reserved.

AB - Here we offer the first assessment of conditions conducive to dissimilatory nitrate reduction to ammonium (DNRA) in temperate arable soils, through an examination of the potential for this process to occur in a range of soils of contrasting characteristics. (NH4NO3)-N-15 (6.2 g N m(-2), 25 atom % excess N-15) was applied, and recovery of N-15 in the NH4+ pool taken as indicative of occurrence of DNRA. Up to 5% of applied N-15 was recovered in the NH4+ pool 2 d after addition of N, glucose (44.6 g C m(-2)) and L-cysteine (7.7 g m(-2), 0.9 g N m(-2), 2.3 g C m(-2)). N-15-NH4+ concentrations were positively correlated with soil pH, C-to-NO3- ratio, bulk density, sand content and NO2- concentration, but negatively correlated with soil C and organic N content. Our results demonstrate the potential for DNRA to contribute to N cycling in temperate arable soils, but its detection and significance is likely to depend on the provision of a low molecular weight C source. (C) 2011 Elsevier Ltd. All rights reserved.

KW - dissimilatory nitrate reduction to ammonium

KW - nitrate ammonification

KW - nitrous oxide

KW - stable isotopes

KW - Chilean nothofagus forest

KW - humid tropical foest

KW - escherichia-coli

KW - nitrous-oxide

KW - nitrite

KW - denitrification

KW - accumulation

KW - competition

KW - sediments

KW - plants

U2 - 10.1016/j.soilbio.2011.02.015

DO - 10.1016/j.soilbio.2011.02.015

M3 - Article

VL - 43

SP - 1607

EP - 1611

JO - Soil Biology and Biochemistry

JF - Soil Biology and Biochemistry

SN - 0038-0717

IS - 7

ER -