ArticlePlant physiology2015
Gibberellic Acid-Stimulated Arabidopsis6 Serves as an Integrator of Gibberellin, Abscisic Acid, and Glucose Signaling during Seed Germination in Arabidopsis.
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 76 papers.
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76 citing papers in PubMed, 118 citations in OpenAlex.
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- Touch-Responsive CsaGASAs Regulate Tendril Length During the Climbing Stage in Cucumber.Plant, cell & environment · 2026Article
- Seed-specific overexpression of DREB2G alters seed morphology, oil accumulation, and germination in Arabidopsis.Plant cell reports · 2026Article
- A multi-omics approach to maize (Zea mays) tassel development.BMC plant biology · 2026Article
- Laminar patterning transcription factors orchestrate spatial metabolite partitioning in Capsicum fruit.Nature plants · 2026Article
- AtGASA1 positively regulates Arabidopsis response to salt stress by suppressing accumulation of reactive oxygen species.Plant cell reports · 2026Article
- Early Plant Development as a Systems-Level Trait: Integrating Omics, Artificial Intelligence, and Emerging Biotechnologies.Plants (Basel, Switzerland) · 2026Review
- Fumarylacetoacetate Hydrolase Regulates Seed Dormancy and Germination Through the Gibberellin Pathway in Arabidopsis.Plants (Basel, Switzerland) · 2025Article
- Unraveling the contribution of GASA gene family in sunflower under diverse stress conditions.Molecular biology reports · 2025Article
- Genome-wide association study of pre-harvest sprouting resistance and grain color in common wheat (Triticum aestivum L.).BMC plant biology · 2025Article
- Genome-Wide Identification and Expression Analysis ofInternational journal of molecular sciences · 2025Article
- Differential Gene Expression and Unbalanced Homeolog Expression Bias in 4 Million-Year-Old Allopolyploids of Nicotiana Section Repandae.Genome biology and evolution · 2025Article
- The Roadmap of Plant Antimicrobial Peptides Under Environmental Stress: From Farm to Bedside.Probiotics and antimicrobial proteins · 2024Review
- Article
- Sorbitol mediates age-dependent changes in apple plant growth strategy through gibberellin signaling.Horticulture research · 2024Article
- The Stylo Cysteine-Rich PeptideInternational journal of molecular sciences · 2024Article
- GhGASA14 regulates the flowering time of upland cotton in response to GAPlant cell reports · 2024Article
- Genome-Wide Identification of GAST Family Members and Their Potential Roles in Epicotyl Dormancy in Chinese Cork Oak (Plants (Basel, Switzerland) · 2024Article
- A GASA Protein Family Gene,International journal of molecular sciences · 2024Article
16 more citing papers are in PubMed but not listed here.
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The DELLA protein REPRESSOR OF ga1-3-LIKE2 (RGL2) plays an important role in seed germination under different conditions through a number of transcription factors. However, the functions of the structural genes associated with RGL2-regulated germination are less defined. Here, we report the role of an Arabidopsis (Arabidopsis thaliana) cell wall-localized protein, Gibberellic Acid-Stimulated Arabidopsis6 (AtGASA6), in functionally linking RGL2 and a cell wall loosening expansin protein (Arabidopsis expansin A1 [AtEXPA1]), resulting in the control of embryonic axis elongation and seed germination. AtGASA6-overexpressing seeds showed precocious germination, whereas transfer DNA and RNA interference mutant seeds displayed delayed seed germination under abscisic acid, paclobutrazol, and glucose (Glc) stress conditions. The differences in germination rates resulted from corresponding variation in cell elongation in the hypocotyl-radicle transition region of the embryonic axis. AtGASA6 was down-regulated by RGL2, GLUCOSE INSENSITIVE2, and ABSCISIC ACID-INSENSITIVE5 genes, and loss of AtGASA6 expression in the gasa6 mutant reversed the insensitivity shown by the rgl2 mutant to paclobutrazol and the gin2 mutant to Glc-induced stress, suggesting that it is involved in regulating both the gibberellin and Glc signaling pathways. Furthermore, it was found that the promotion of seed germination and length of embryonic axis by AtGASA6 resulted from a promotion of cell elongation at the embryonic axis mediated by AtEXPA1. Taken together, the data indicate that AtGASA6 links RGL2 and AtEXPA1 functions and plays a role as an integrator of gibberellin, abscisic acid, and Glc signaling, resulting in the regulation of seed germination through a promotion of cell elongation.
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