ArticleProceedings of the National Academy of Sciences of the United States of America2016
Aridity and plant uptake interact to make dryland soils hotspots for nitric oxide (NO) emissions.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed.
- Coevolution of host resistance and pathogen exploitation in a propagule-mediated infection model.PLoS computational biology · 2026Article
- Climate warming reduces soil gaseous nitrogen losses in a temperate forest.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Abiotic reactions drive post-wetting soil emissions of NScientific reports · 2025Article
- Nitrogen Availability and Changes in Precipitation Alter Microbially Mediated NO and NGlobal change biology · 2025Article
- Fire influence on land-water interactions in aridland catchments.Bioscience · 2025Article
- Widespread detoxifying NO reductases impart a distinct isotopic fingerprint on NProceedings of the National Academy of Sciences of the United States of America · 2024Article
- NO and HInternational journal of molecular sciences · 2024Review
- Bacterial denitrification drives elevated NScience advances · 2023Article
- Warming and redistribution of nitrogen inputs drive an increase in terrestrial nitrous oxide emission factor.Nature communications · 2022Article
- Microbial Biogeochemical Cycling of Nitrogen in Arid Ecosystems.Microbiology and molecular biology reviews : MMBR · 2022Review
- Soil gas probes for monitoring trace gas messengers of microbial activity.Scientific reports · 2021Article
- Muted responses to chronic experimental nitrogen deposition on the Colorado Plateau.Oecologia · 2021Article
- Isotopic advances in understanding reactive nitrogen deposition and atmospheric processing.The Science of the total environment · 2019Article
- Microbial mechanisms and ecosystem flux estimation for aerobic NOProceedings of the National Academy of Sciences of the United States of America · 2019Article
- Hydroxylamine released by nitrifying microorganisms is a precursor for HONO emission from drying soils.Scientific reports · 2018Article
- Agriculture is a major source of NOScience advances · 2018Article
- Chronic N enrichment and drought alter plant cover and community composition in a Mediterranean-type semi-arid shrubland.Oecologia · 2017Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nitric oxide (NO) is an important trace gas and regulator of atmospheric photochemistry. Theory suggests moist soils optimize NO emissions, whereas wet or dry soils constrain them. In drylands, however, NO emissions can be greatest in dry soils and when dry soils are rewet. To understand how aridity and vegetation interact to generate this pattern, we measured NO fluxes in a California grassland, where we manipulated vegetation cover and the length of the dry season and measured [δ(15)-N]NO and [δ(18)-O]NO following rewetting with (15)N-labeled substrates. Plant N uptake reduced NO emissions by limiting N availability. In the absence of plants, soil N pools increased and NO emissions more than doubled. In dry soils, NO-producing substrates concentrated in hydrologically disconnected microsites. Upon rewetting, these concentrated N pools underwent rapid abiotic reaction, producing large NO pulses. Biological processes did not substantially contribute to the initial NO pulse but governed NO emissions within 24 h postwetting. Plants acted as an N sink, limiting NO emissions under optimal soil moisture. When soils were dry, however, the shutdown in plant N uptake, along with the activation of chemical mechanisms and the resuscitation of soil microbial processes upon rewetting, governed N loss. Aridity and vegetation interact to maintain a leaky N cycle during periods when plant N uptake is low, and hydrologically disconnected soils favor both microbial and abiotic NO-producing mechanisms. Under increasing rates of atmospheric N deposition and intensifying droughts, NO gas evasion may become an increasingly important pathway for ecosystem N loss in drylands.
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