ArticleAoB PLANTS2010
Nitrification inhibition activity, a novel trait in root exudates of rice.
Article in AoB PLANTS, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Evidence of biological nitrification inhibition in barley to support sustainable nitrogen management.Sustainable microbiology · 2026Article
- Genetic variation among elite inbred lines suggests potential to breed for BNI-capacity in maize.Scientific reports · 2023Article
- Will crops with biological nitrification inhibition capacity be favored under future atmospheric COFrontiers in plant science · 2023Article
- Improved Nitrogen Use Efficiency and Greenhouse Gas Emissions in Agricultural Soils as Producers of Biological Nitrification Inhibitors.Frontiers in plant science · 2022Review
- Improving Nitrogen Use Efficiency in Aerobic Rice Based on Insights Into the Ecophysiology of Archaeal and Bacterial Ammonia Oxidizers.Frontiers in plant science · 2022Review
- A review of root exudates and rhizosphere microbiome for crop production.Environmental science and pollution research international · 2021Review
- Nitrifying Microbes in the Rhizosphere of Perennial Grasses are Modified by Biological Nitrification Inhibition.Microorganisms · 2020Article
- Biological Nitrification Inhibition (BNI): Phenotyping of a Core Germplasm Collection of the Tropical Forage GrassFrontiers in plant science · 2020Article
- Improving the Yield and Nutritional Quality of Forage Crops.Frontiers in plant science · 2018Review
- Article
- Changes in diversity and functional gene abundances of microbial communities involved in nitrogen fixation, nitrification, and denitrification in a tidal wetland versus paddy soils cultivated for different time periods.Applied and environmental microbiology · 2011Article
- Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsNitrification is an important process in soil--plant systems for providing plant-available nitrate (NO(3) (-)). However, NO(3) (-) is less stable in soils compared with ammonium (NH(4) (+)) and is more easily lost through leaching, runoff or denitrification. This study tested whether biological nitrification inhibition (BNI) activity is present in the root exudates of rice (Oryza sativa) and also the extent of variation between different genotypes. METHODOLOGY: The BNI activity of root exudates was estimated by a bioluminescence assay using a recombinant Nitrosomonas europaea strain. Afterwards, the effect of a single application of concentrated root exudates and that of exudates deposited in the rhizosphere soil was tested on BNI using soil incubation. Soil was added with (NH(4))(2)SO(4) and water to reach 60 % of the water-holding capacity and incubated at 30 °C for different periods. Amounts of NH(4) (+) and NO(3) (-) were determined using a continuous-flow auto-analyser. PRINCIPAL
resultsIn an initial screening experiment, BNI activity in the exudates of 36 different rice genotypes was evaluated using a bioassay based on a recombinant Nitrosomonas strain. Significant genotypic variation was detected with the upland cultivar IAC25 demonstrating consistently high BNI activity, while modern lowland varieties like Nipponbare or IR64 exhibited lower activity. Subsequent experiments ruled out the possibility that BNI activity is simply due to non-specific (solute) leakage from roots. Soil incubation studies with concentrated root exudates of IAC25 showed significant reductions in NO(3) (-) formation. This effect was confirmed by detecting lower NO(3) (-) levels in incubation experiments using rhizosphere soil obtained from IAC25.
conclusionsOur results provide first evidence that root exudates of rice can reduce nitrification rates in soil. Having shown this for a model crop, rice, offers possibilities for further exploitation of this phenomenon through molecular and genetic tools.
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Registered trials
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