ArticlePlant physiology2000
Expression of an expansin is associated with endosperm weakening during tomato seed germination.
Article in Plant physiology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.
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Who cites it
79 citing papers in PubMed, 246 citations in OpenAlex.
- Evolution of the expansin superfamily in bryophytes and green algae.Protoplasma · 2026Article
- Acidic and Alkaline pH Stresses Impair Tomato Seed Germination and Seedling Growth via Disruption of Reactive Oxygen Species and Auxin Homeostasis.Plants (Basel, Switzerland) · 2026Article
- The initiation of embryo growth in imbibed celery mericarps marks a key mechanism by which temperature signals are integrated to regulate germination timing.Journal of experimental botany · 2026Article
- Molecular and biochemical mechanisms regulating seed germination in Tectona grandis.Molecular biology reports · 2026Article
- Pleiotropic SNPs and genes linked to enhanced seed longevity and vigor for climate resilient pearl millet production.Frontiers in plant science · 2026Article
- Distinct Molecular Biomechanical Mechanisms Inhibit Endosperm Cell-Wall Weakening and Seed Germination at Cold and Warm Nonoptimal Temperatures.Plant, cell & environment · 2025Article
- Overexpression of the Wild Soybean Expansin GenePlants (Basel, Switzerland) · 2025Article
- Transcription factor ERF1 promotes seed germination by repressing jasmonic acid (JA) signaling pathway.Plant cell reports · 2025Article
- A DOF transcriptional repressor-gibberellin feedback loop plays a crucial role in modulating light-independent seed germination.Plant communications · 2025Article
- Role of functional genes for seed vigor related traits through genome-wide association mapping in finger millet (Eleusine coracana L. Gaertn.).Scientific reports · 2025Article
- Overexpression of Wild Soybean Expansin GenePlants (Basel, Switzerland) · 2024Article
- EXPANSIN15 is involved in flower and fruit development in Arabidopsis.Plant reproduction · 2024Article
- Transcriptome- and genome-wide systematic identification of expansin gene family and their expression in tuberous root development and stress responses in sweetpotato (Frontiers in plant science · 2024Article
- Transcription factor VviWOX13C regulates fruit set by directly activating VviEXPA37/38/39 in grape (Vitis vinifera L).Plant cell reports · 2023Article
- Comparative bioinformatics analysis and abiotic stress responses of expansin proteins in Cucurbitaceae members: watermelon and melon.Protoplasma · 2023Article
- Transcriptome Analyses Reveal the Role of Light in Releasing the Morphological Dormancy of Celery Seed by Integrating Plant Hormones, Sugar Metabolism and Endosperm Weakening.International journal of molecular sciences · 2022Article
- Genome-Wide Identification of Expansin Genes in Wild Soybean (International journal of molecular sciences · 2022Article
- Cold-induced secondary dormancy and its regulatory mechanisms in Beta vulgaris.Plant, cell & environment · 2022Article
- RNA-seq analysis reveals key genes associated with seed germination ofFrontiers in plant science · 2022Article
- Genome-wide identification of expansin gene family in barley and drought-related expansins identification based on RNA-seq.Genetica · 2021Article
19 more citing papers are in PubMed but not listed here.
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Expansins are extracellular proteins that facilitate cell wall extension, possibly by disrupting hydrogen bonding between hemicellulosic wall components and cellulose microfibrils. In addition, some expansins are expressed in non-growing tissues such as ripening fruits, where they may contribute to cell wall disassembly associated with tissue softening. We have identified at least three expansin genes that are expressed in tomato (Lycopersicon esculentum Mill.) seeds during germination. Among these, LeEXP4 mRNA is specifically localized to the micropylar endosperm cap region, suggesting that the protein might contribute to tissue weakening that is required for radicle emergence. In gibberellin (GA)-deficient (gib-1) mutant seeds, which germinate only in the presence of exogenous GA, GA induces the expression of LeEXP4 within 12 hours of imbibition. When gib-1 seeds were imbibed in GA solution combined with 100 microM abscisic acid, the expression of LeEXP4 was not reduced, although radicle emergence was inhibited. In wild-type seeds, LeEXP4 mRNA accumulation was blocked by far-red light and decreased by low water potential but was not affected by abscisic acid. The presence of LeEXP4 mRNA during seed germination parallels endosperm cap weakening determined by puncture force analysis. We hypothesize that LeEXP4 is involved in the regulation of seed germination by contributing to cell wall disassembly associated with endosperm cap weakening.
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