ReviewApplied and environmental microbiology2019
To Fix or Not To Fix: Controls on Free-Living Nitrogen Fixation in the Rhizosphere.
Review in Applied and environmental microbiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 66 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
66 citing papers in PubMed, 273 citations in OpenAlex.
- PGPR inoculation and growth enhancement of crops cultivated in hydroponic systems.World journal of microbiology & biotechnology · 2026Review
- Interaction Mechanisms Among Soil Environmental Factors, Microbial Communities, and Nitrogen-Cycling Functional Genes in Cool-Climate Maize Fields.Microorganisms · 2026Article
- Global variation of plant nitrogen acquisition strategies and their responses to decreasing nitrogen availability.Nature communications · 2026Article
- Stress-resilient endospore-forming diazotrophs from red lateritic soils of India: functional profiling and first evidence of Priestia abyssalis and Bacillus gaemokensis as nitrogen-fixers with multifunctional PGPR traits.World journal of microbiology & biotechnology · 2026Article
- Soil microbial communities shift in response to cropping sequence diversification with perennial seed crops.Frontiers in microbiomes · 2026Article
- Enhancing biological nitrogen fixation in rice paddy ecosystems: challenges, opportunities, and sustainable strategies.Frontiers in microbiology · 2026Review
- Ecological constraints and evolutionary trade-offs shape nitrogen fixation across habitats.ISME communications · 2026Article
- Signatures of local nitrogen adaptation in the Brachypodium distachyon root microbiome.The New phytologist · 2026Article
- Concomitant responses of free-living nitrogen fixation and diazotrophic community composition to soil moisture in two soils.Frontiers in microbiology · 2026Article
- Symbiotic N-Fixing Bacteria in the Root and Leaf of Typical Alpine Grassland Plants.Microbial ecology · 2025Article
- Key Challenges in Plant Microbiome Research in the Next Decade.Microorganisms · 2025Review
- Ecosystem consequences of a nitrogen-fixing proto-organelle.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Arginine-iron-hexametaphosphate complex as a novel nitrogen plant nutrition reducing nitrate leaching in Scots pine (Pinus sylvestris) seedling production.Scientific reports · 2025Article
- Rotation Alleviated the Continuous Cropping Obstacle of Peanut (Plants (Basel, Switzerland) · 2025Article
- Soil microclimate and vegetation dynamics shape elevational and seasonal variations of diazotrophic communities in alpine grasslands.Frontiers in plant science · 2025Article
- SoilFrontiers in microbiology · 2025Article
- Excessive Extracellular Ammonium Production by a Free-Living Nitrogen-Fixing SoilMicroorganisms · 2024Article
- Deciphering Molecular Mechanisms and Diversity of Plant Holobiont Bacteria: Microhabitats, Community Ecology, and Nutrient Acquisition.International journal of molecular sciences · 2024Review
- Article
- Soil nitrogen-related functional genes undergo abundance changes during vegetation degradation in a Qinghai-Tibet Plateau wet meadow.Applied and environmental microbiology · 2024Article
6 more citing papers are in PubMed but not listed here.
Corrections and comments
- Erratum issued
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Free-living nitrogen fixation (FLNF) in the rhizosphere, or N fixation by heterotrophic bacteria living on/near root surfaces, is ubiquitous and a significant source of N in some terrestrial systems. FLNF is also of interest in crop production as an alternative to chemical fertilizer, potentially reducing production costs and ameliorating negative environmental impacts of fertilizer N additions. Despite this interest, a mechanistic understanding of controls (e.g., carbon, oxygen, nitrogen, and nutrient availability) on FLNF in the rhizosphere is lacking but necessary. FLNF is distinct from and occurs under more diverse and dynamic conditions than symbiotic N fixation; therefore, predicting FLNF rates and understanding controls on FLNF has proven difficult. This has led to large gaps in our understanding of FLNF, and studies aimed at identifying controls on FLNF are needed. Here, we provide a mechanistic overview of FLNF, including how various controls may influence FLNF in the rhizosphere in comparison with symbiotic N fixation occurring in plant nodules where environmental conditions are moderated by the plant. We apply this knowledge to a real-world example, the bioenergy crop switchgrass (
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.