Influence of denitrifiers abundance on N2O emissions in long term tillage system under a rainfed legume crop

Téllez del Río, Ángela and García Marco, Sonia and Navas, M. and Ábalos Rodríguez, Diego and Rodriguez Palenzuela, Pablo and Lopez Solanilla, Emilia and Tenorio, J. L. and Vallejo Garcia, Antonio (2013). Influence of denitrifiers abundance on N2O emissions in long term tillage system under a rainfed legume crop. In: "V International Conference on Environmental, Industria and Applied Microbiology. BioMicroWorld 2013.", 02/10/2013 - 04/10/2013, Madrid (España). ISBN 978-90-8686-243-6.

Description

Title: Influence of denitrifiers abundance on N2O emissions in long term tillage system under a rainfed legume crop
Author/s:
  • Téllez del Río, Ángela
  • García Marco, Sonia
  • Navas, M.
  • Ábalos Rodríguez, Diego
  • Rodriguez Palenzuela, Pablo
  • Lopez Solanilla, Emilia
  • Tenorio, J. L.
  • Vallejo Garcia, Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: V International Conference on Environmental, Industria and Applied Microbiology. BioMicroWorld 2013.
Event Dates: 02/10/2013 - 04/10/2013
Event Location: Madrid (España)
Title of Book: Industrial, medical and environmental applications of microorganisms. Current status and trends.
Date: 2013
ISBN: 978-90-8686-243-6
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Química y Análisis Agrícola [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Current studies about nitrous oxide (N2O) emissions from legume crops have raised considerable doubt, observing a high variability between sites (0.03-7.09 kg N2O–N ha−1 y -1) [1]. This high variability has been associated to climate and soil conditions, legume species and soil management practices (e.g. conservation or conventional tillage). Conservation tillage (i.e. no tillage (NT) and minimum tillage (MT)) has spread during the last decades because promotes several positive effects (increase of soil organic content, reduction of soil erosion and enhancement of carbon (C) sequestration). However, these benefits could be partly counterbalanced by negative effects on the release of N2O emissions. Among processes responsible for N2O production and consumption in soils, denitrification plays an importantrole both in tilled and no-tilled ropping systems [2]. Recently, amplification of functional bacterial genes involved in denitrification is being used to examine denitrifiers abundance and evaluate their influence on N2O emissions. NirK and nirS are functional genes encoding the cytochrome cd1 and copper nitrite reductase, which is the key enzyme regulating the denitrification process.

More information

Item ID: 26366
DC Identifier: http://oa.upm.es/26366/
OAI Identifier: oai:oa.upm.es:26366
Deposited by: Memoria Investigacion
Deposited on: 01 Jul 2014 15:39
Last Modified: 22 Sep 2014 11:41
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