ArticleProceedings of the National Academy of Sciences of the United States of America2012
Sieve element occlusion (SEO) genes encode structural phloem proteins involved in wound sealing of the phloem.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.
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Who cites it
56 citing papers in PubMed, 113 citations in OpenAlex.
- Comparative Wound Healing Processes in Plants and Animals: Bioinspired Strategies for Advancing Regenerative Medicine.International journal of molecular sciences · 2026Review
- Genetic architecture of the sieve element occlusion (SEO) family underlying potential regulatory mechanisms in citrus stress response.Journal of applied genetics · 2026Article
- Regulatory DNA Sequences Controlling Gene Expression in Leaf Phloem Cells.Methods in molecular biology (Clifton, N.J.) · 2026Review
- A Dual-Reporter System for the Analysis of Phloem Structural and Signaling Responses In Vivo.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Viral Systemic Movement Is Enhanced by Alteration of a Structural Phloem Protein by the Insect Vector.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Nicotiana benthamiana VASCULAR-RELATED NAC-DOMAIN7-2 (NbVND7-2) has a role in xylem formation during interfamily grafting.Journal of experimental botany · 2025Article
- SEOR2 in Arabidopsis mediates CaScientific reports · 2025Article
- Identification of phloem-specific proteinaSEOus structure heterogeneity in sieve element of Populus trichocarpa.BMC plant biology · 2025Article
- The cis-prenyltransferase protein family in Taraxacum koksaghyz.The Plant journal : for cell and molecular biology · 2025Article
- Phloem cell responses to the feeding activity ofFrontiers in plant science · 2025Article
- Characterization of the Cannabis sativa glandular trichome epigenome.BMC plant biology · 2024Article
- Cytoplasmic zoning by protein phase transition after membrane permeabilization.Journal of biochemistry · 2024Review
- Multi-trait modeling and machine learning discover new markers associated with stem traits in alfalfa.Frontiers in plant science · 2024Article
- Analysis of huanglongbing-associated RNA-seq data reveals disturbances in biological processes withinFrontiers in plant science · 2024Article
- Interactions between plant-beneficial microorganisms in a consortium: Streptomyces microflavus and Trichoderma harzianum.Microbial biotechnology · 2023Article
- Phloem Sap Composition: What Have We Learnt from Metabolomics?International journal of molecular sciences · 2023Review
- CRISPR technology towards genome editing of the perennial and semi-perennial crops citrus, coffee and sugarcane.Frontiers in plant science · 2023Review
- Parallel repair mechanisms in plants and animals.Disease models & mechanisms · 2023Article
- Revealing the transitory and local effect of zebularine on development and on proteome dynamics ofFrontiers in plant science · 2023Article
- Proteomics of isolated sieve tubes fromProceedings of the National Academy of Sciences of the United States of America · 2022Article
Corrections and comments
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Authors and funding
10 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The sieve element occlusion (SEO) gene family originally was delimited to genes encoding structural components of forisomes, which are specialized crystalloid phloem proteins found solely in the Fabaceae. More recently, SEO genes discovered in various non-Fabaceae plants were proposed to encode the common phloem proteins (P-proteins) that plug sieve plates after wounding. We carried out a comprehensive characterization of two tobacco (Nicotiana tabacum) SEO genes (NtSEO). Reporter genes controlled by the NtSEO promoters were expressed specifically in immature sieve elements, and GFP-SEO fusion proteins formed parietal agglomerates in intact sieve elements as well as sieve plate plugs after wounding. NtSEO proteins with and without fluorescent protein tags formed agglomerates similar in structure to native P-protein bodies when transiently coexpressed in Nicotiana benthamiana, and the analysis of these protein complexes by electron microscopy revealed ultrastructural features resembling those of native P-proteins. NtSEO-RNA interference lines were essentially devoid of P-protein structures and lost photoassimilates more rapidly after injury than control plants, thus confirming the role of P-proteins in sieve tube sealing. We therefore provide direct evidence that SEO genes in tobacco encode P-protein subunits that affect translocation. We also found that peptides recently identified in fascicular phloem P-protein plugs from squash (Cucurbita maxima) represent cucurbit members of the SEO family. Our results therefore suggest a common evolutionary origin for P-proteins found in the sieve elements of all dicotyledonous plants and demonstrate the exceptional status of extrafascicular P-proteins in cucurbits.
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