ArticleProceedings of the National Academy of Sciences of the United States of America2016
Root exudates drive interspecific facilitation by enhancing nodulation and N2 fixation.
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. An erratum has been issued. Cited by 81 papers, 1 of them a synthesis that pooled it.
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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.
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Who cites it
81 citing papers in PubMed, 1 synthesis or guideline pooled it, 417 citations in OpenAlex.
- Survey of scientific production on bio-inputs in Northern and Northeastern Brazil (2010-2025): A focus on plant growth-promoting microorganisms in legumes and grasses.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2026Pooled it
- Nitrogen-modulated intercropping boosts yield and quality in Codonopsis pilosula.BMC plant biology · 2026Article
- 3D reconstruction analysis of maize-soybean intercropping competition under water stress.Plant phenomics (Washington, D.C.) · 2026Article
- Microbial mechanisms of rhizosphere nitrogen cycling mediated by cotton root exudates under nitrogen reduction: roles of thiamine and L-lysine.BMC plant biology · 2026Article
- Beyond desalinization: root interactions with halophyteFrontiers in plant science · 2026Article
- Rice varietal intercropping mediates resistance to rice blast (Magnaporthe Oryzae) through core root exudates.BMC plant biology · 2025Article
- Integrated strategies for enhancing agrifood productivity, lowering greenhouse gas emissions, and improving soil health.Innovation (Cambridge (Mass.)) · 2025Review
- How to harness the effects of exudates and microbes that support beneficial plant-plant interactions for sustainable agriculture.PLoS biology · 2025Review
- Application of root exudates derived from peanut/maize intercropping system promotes peanut growth and yield via modulating nitrogen turnover processes.BMC plant biology · 2025Article
- Long-Term Year-Interval Effect of Continuous Maize/Soybean Intercropping on Maize Yield and Phosphorus Use Efficiency.Plants (Basel, Switzerland) · 2025Article
- Suppressing maize stalk rot through promoted rhizosphere microbial recruitment in cultivar mixtures.Frontiers in microbiology · 2025Article
- The influence of intercroppingFrontiers in microbiology · 2025Article
- Enhancing the Resilience of Agroecosystems Through Improved Rhizosphere Processes: A Strategic Review.International journal of molecular sciences · 2024Review
- Synthetic Microbial Community Isolated from Intercropping System Enhances P Uptake in Rice.International journal of molecular sciences · 2024Article
- Effects of Sugarcane/Peanut Intercropping on Root Exudates and Rhizosphere Soil Nutrient.Plants (Basel, Switzerland) · 2024Article
- Volatile-mediated interspecific plant interaction promotes root colonization by beneficial bacteria via induced shifts in root exudation.Microbiome · 2024Article
- Seasonal soil health dynamics in soy-wheat relay intercropping.Scientific reports · 2024Article
- Factors Influencing the Emergence of Heterogeneous Populations of Common Bean (Plants (Basel, Switzerland) · 2024Review
- Legume rhizodeposition promotes nitrogen fixation by soil microbiota under crop diversification.Nature communications · 2024Article
- Diversity of the Maize Root Endosphere and Rhizosphere Microbiomes Modulated by the Inoculation withPlants (Basel, Switzerland) · 2024Article
21 more citing papers are in PubMed but not listed here.
Corrections and comments
- Erratum issued
Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plant diversity in experimental systems often enhances ecosystem productivity, but the mechanisms causing this overyielding are only partly understood. Intercropping faba beans (Vicia faba L.) and maize (Zea mays L.) result in overyielding and also, enhanced nodulation by faba beans. By using permeable and impermeable root barriers in a 2-y field experiment, we show that root-root interactions between faba bean and maize significantly increase both nodulation and symbiotic N2 fixation in intercropped faba bean. Furthermore, root exudates from maize promote faba bean nodulation, whereas root exudates from wheat and barley do not. Thus, a decline of soil nitrate concentrations caused by intercropped cereals is not the sole mechanism for maize promoting faba bean nodulation. Intercropped maize also caused a twofold increase in exudation of flavonoids (signaling compounds for rhizobia) in the systems. Roots of faba bean treated with maize root exudates exhibited an immediate 11-fold increase in the expression of chalcone-flavanone isomerase (involved in flavonoid synthesis) gene together with a significantly increased expression of genes mediating nodulation and auxin response. After 35 d, faba beans treated with maize root exudate continued to show up-regulation of key nodulation genes, such as early nodulin 93 (ENOD93), and promoted nitrogen fixation. Our results reveal a mechanism for how intercropped maize promotes nitrogen fixation of faba bean, where maize root exudates promote flavonoid synthesis in faba bean, increase nodulation, and stimulate nitrogen fixation after enhanced gene expression. These results indicate facilitative root-root interactions and provide a mechanism for a positive relationship between species diversity and ecosystem productivity.
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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.