ArticlePlant physiology2015
GmEXPB2, a Cell Wall β-Expansin, Affects Soybean Nodulation through Modifying Root Architecture and Promoting Nodule Formation and Development.
Article in Plant physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.
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Who cites it
53 citing papers in PubMed, 89 citations in OpenAlex.
- An integrated WGCNA-XGBoost framework for prioritizing candidate stress-responsive hub genes in soybean under nutrient and heavy metal stress conditions.Journal of applied genetics · 2026Article
- Telomere-to-telomere genome of Stylosanthes guianensis uncovers symbiotic adaptation to phosphorus-deficient soils.Genome biology · 2026Article
- Plant-Associated Microbiomes: Crosstalk and Engineering to Improve Nutrient Use Efficiency (NUE) in Crops of Global Importance.Plants (Basel, Switzerland) · 2026Review
- Identification of nodule number-related loci and the candidate gene GmbHLH135 in soybean under low phosphorus stress.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Breeding Climate-Resilient Soybeans for 2050 and Beyond: Leveraging Novel Technologies to Mitigate Yield Stagnation and Climate Change Impacts.Plants (Basel, Switzerland) · 2026Review
- Genome-wide identification and expression analysis of the expansin gene family in Brassica napus L.Scientific reports · 2026Article
- Root cell wall remodeling during symbiotic microbial colonization.Frontiers in plant science · 2026Review
- The Lotus japonicus alpha-expansin EXPA1 is recruited during intracellular and intercellular rhizobial colonization.The Plant journal : for cell and molecular biology · 2025Article
- Single-Cell Transcriptome Atlas and Dynamic Regulatory Mechanisms of Anther Development in Alfalfa (Medicago sativa L.).Plant biotechnology journal · 2025Article
- Modulation of morphogenesis and metabolism by plant cell biomechanics: from model plants to traditional herbs.Horticulture research · 2025Article
- GmERF13 mediates salt inhibition of nodulation through interacting with GmLBD16a in soybean.Nature communications · 2025Article
- Article
- Characterization of Root Hair Curling and Nodule Development in Soybean-Rhizobia Symbiosis.Sensors (Basel, Switzerland) · 2024Article
- Overexpression of Wild Soybean Expansin GenePlants (Basel, Switzerland) · 2024Article
- Genome-Wide Identification, Phylogenetic and Expression Analysis of Expansin Gene Family inInternational journal of molecular sciences · 2024Article
- Overexpression of GmPAP4 Enhances Symbiotic Nitrogen Fixation and Seed Yield in Soybean under Phosphorus-Deficient Condition.International journal of molecular sciences · 2024Article
- UnregulatedInternational journal of molecular sciences · 2024Article
- Understanding the Molecular Regulatory Networks of Seed Size in Soybean.International journal of molecular sciences · 2024Review
- Benzoic acid facilitates ANF in monocot crops by recruiting nitrogen-fixing Paraburkholderia.The ISME journal · 2024Article
- Relay intercropped soybean promotes nodules development and nitrogen fixation by root exudates deposition.Frontiers in plant science · 2024Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nodulation is an essential process for biological nitrogen (N2) fixation in legumes, but its regulation remains poorly understood. Here, a β-expansin gene, GmEXPB2, was found to be critical for soybean (Glycine max) nodulation. GmEXPB2 was preferentially expressed at the early stage of nodule development. β-Glucuronidase staining further showed that GmEXPB2 was mainly localized to the nodule vascular trace and nodule vascular bundles, as well as nodule cortical and parenchyma cells, suggesting that GmEXPB2 might be involved in cell wall modification and extension during nodule formation and development. Overexpression of GmEXPB2 dramatically modified soybean root architecture, increasing the size and number of cortical cells in the root meristematic and elongation zones and expanding root hair density and size of the root hair zone. Confocal microscopy with green fluorescent protein-labeled rhizobium USDA110 cells showed that the infection events were significantly enhanced in the GmEXPB2-overexpressing lines. Moreover, nodule primordium development was earlier in overexpressing lines compared with wild-type plants. Thereby, overexpression of GmEXPB2 in either transgenic soybean hairy roots or whole plants resulted in increased nodule number, nodule mass, and nitrogenase activity and thus elevated plant N and phosphorus content as well as biomass. In contrast, suppression of GmEXPB2 in soybean transgenic composite plants led to smaller infected cells and thus reduced number of big nodules, nodule mass, and nitrogenase activity, thereby inhibiting soybean growth. Taken together, we conclude that GmEXPB2 critically affects soybean nodulation through modifying root architecture and promoting nodule formation and development and subsequently impacts biological N2 fixation and growth of soybean.
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