ArticleFrontiers in plant science2023
Systemic regulation of nodule structure and assimilated carbon distribution by nitrate in soybean.
Article in Frontiers in plant science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 14 citations in OpenAlex.
- The Interplay of Light and Microbial Symbiosis in Shaping Plant Economic Spectrum Strategies.Microbial ecology · 2026Article
- Nitrogen-Controlled Host Gatekeeping: Regulatory Chokepoints Across Four Windows for Diazotroph Access.International journal of molecular sciences · 2026Article
- Impact ofPlants (Basel, Switzerland) · 2026Article
- The indirect effect of nitrate on the soybean nodule growth and nitrogen fixation activity in relation to carbon supply.BMC plant biology · 2025Article
- Role of Environmental Factors in Legume-Biomolecules · 2025Review
- A Study on the Effect of Indirect Nitrate Supply on the Nitrogen Fixation Capacity of Soybean Nodules.Plants (Basel, Switzerland) · 2024Article
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Authors and funding
12 authors at 1 institution in 1 country.
Funding
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Abstract
Background: The nitrate regulates soybean nodulation and nitrogen fixation systemically, mainly in inhibiting nodule growth and reducing nodule nitrogenase activity, but the reason for its inhibition is still inconclusive. Methods: The systemic effect of nitrate on nodule structure, function, and carbon distribution in soybean ( Results: Elevated concentrations of nitrate applied on the non-nodulating side caused a decrease in the number of bacteroids, fusion of symbiosomes, enlargement of the peribacteroid spaces, and onset of degradation of poly-β-hydroxybutyrate granules, which is a form of carbon storage in bacteroids. These microscopic observations were associated with a strong decrease in the nitrogenase activity of nodules. Furthermore, our data demonstrate that the assimilated carbon is more likely to be allocated to the non-nodulating roots, as follows from the competition for carbon between the symbiotic and non-symbiotic sides of the dual-root system. Conclusion: We propose that there is no carbon competition between roots and nodules when they are indirectly supplied with nitrate, and that the reduction of carbon fluxes to nodules and roots on the nodulating side is the mechanism by which the plant systemically suppresses nodulation under nitrogen-replete conditions.
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