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Suppression of soil nitrification by plants

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Relation http://oar.icrisat.org/8670/
http://dx.doi.org/10.1016/j.plantsci.2015.01.012
 
Title Suppression of soil nitrification by plants
 
Creator Subbarao, G V
Yoshihashi, T
Worthington, M
Nakahara, K
Ando, Y
Sahrawat, K L
Rao, I M
Lata, J C
Kishii, M
Braun, H J
 
Subject Soil Science
 
Description Nitrification, the biological oxidation of ammonium to nitrate, weakens the soil’s ability to retain N and
facilitates N-losses from production agriculture through nitrate-leaching and denitrification. This process
has a profound influence on what form of mineral-N is absorbed, used by plants, and retained in the soil,
or lost to the environment, which in turn affects N-cycling, N-use efficiency (NUE) and ecosystem health
and services. As reactive-N is often the most limiting in natural ecosystems, plants have acquired a range
of mechanisms that suppress soil-nitrifier activity to limit N-losses via N-leaching and denitrification.
Plants’ ability to produce and release nitrification inhibitors from roots and suppress soil-nitrifier activity
is termed ‘biological nitrification inhibition’ (BNI). With recent developments in methodology for insitu
measurement of nitrification inhibition, it is now possible to characterize BNI function in plants.
This review assesses the current status of our understanding of the production and release of biological
nitrification inhibitors (BNIs) and their potential in improving NUE in agriculture. A suite of genetic, soil
and environmental factors regulate BNI activity in plants. BNI-function can be genetically exploited to
improve the BNI-capacity of major food- and feed-crops to develop next-generation production systems
with reduced nitrification and N2O emission rates to benefit both agriculture and the environment. The
feasibility of such an approach is discussed based on the progresses made.
 
Publisher Elsevier
 
Date 2015
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/8670/1/PlantSci_233_155-164_2015.pdf
Subbarao, G V and Yoshihashi, T and Worthington, M and Nakahara, K and Ando, Y and Sahrawat, K L and Rao, I M and Lata, J C and Kishii, M and Braun, H J (2015) Suppression of soil nitrification by plants. Plant Science, 233. pp. 155-164. ISSN 0168-9452