ArticlePloS one2014
AtEXP2 is involved in seed germination and abiotic stress response in Arabidopsis.
Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.
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60 citing papers in PubMed, 1 synthesis or guideline pooled it, 132 citations in OpenAlex.
- Comparative transcriptome meta-analysis of Arabidopsis thaliana under drought and cold stress.PloS one · 2018Pooled it
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- Molecular and biochemical mechanisms regulating seed germination in Tectona grandis.Molecular biology reports · 2026Article
- Stage-specific regulation of seed germination under saline-alkali stress and implications for sequential emergence capacity.Frontiers in plant science · 2026Review
- Comprehensive genomic analysis of the expansin gene family in pecan (Carya illinoinensis) and their transcriptional responses to stresses and fruit abscission.BMC plant biology · 2025Article
- Distinct Molecular Biomechanical Mechanisms Inhibit Endosperm Cell-Wall Weakening and Seed Germination at Cold and Warm Nonoptimal Temperatures.Plant, cell & environment · 2025Article
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- Function diversity of the expansin subfamily genes inFrontiers in plant science · 2025Article
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- OsEXPA7 Encoding an Expansin Affects Grain Size and Quality Traits in Rice (Oryza sativa L.).Rice (New York, N.Y.) · 2024Article
- Genome-Wide Identification, Phylogenetic and Expression Analysis of Expansin Gene Family inInternational journal of molecular sciences · 2024Article
- Autophagy maintains endosperm quality during seed storage to preserve germination ability in Arabidopsis.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Identification and expression analysis of expansin gene family in Salvia miltiorrhiza.Chinese medicine · 2024Article
- Genome-wide identification of the expansin gene family in netted melon and their transcriptional responses to fruit peel cracking.Frontiers in plant science · 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
- Hormone-regulated expansins: Expression, localization, and cell wall biomechanics in Arabidopsis root growth.Plant physiology · 2023Article
- A Travel through Landscapes of Seed Dormancy.Plants (Basel, Switzerland) · 2023Review
- Genome-Wide Identification of Expansin Gene Family and Their Response under Hormone Exposure inInternational journal of molecular sciences · 2023Article
- Transcriptome and proteome analyses reveal the potential mechanism of seed dormancy release in Amomum tsaoko during warm stratification.BMC genomics · 2023Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Expansins are cell wall proteins that promote cell wall loosening by inducing pH-dependent cell wall extension and stress relaxation. Expansins are required in a series of physiological developmental processes in higher plants such as seed germination. Here we identified an Arabidopsis expansin gene AtEXPA2 that is exclusively expressed in germinating seeds and the mutant shows delayed germination, suggesting that AtEXP2 is involved in controlling seed germination. Exogenous GA application increased the expression level of AtEXP2 during seed germination, while ABA application had no effect on AtEXP2 expression. Furthermore, the analysis of DELLA mutants show that RGL1, RGL2, RGA, GAI are all involved in repressing AtEXP2 expression, and RGL1 plays the most dominant role in controlling AtEXP2 expression. In stress response, exp2 mutant shows higher sensitivity than wild type in seed germination, while overexpression lines of AtEXP2 are less sensitive to salt stress and osmotic stress, exhibiting enhanced tolerance to stress treatment. Collectively, our results suggest that AtEXP2 is involved in the GA-mediated seed germination and confers salt stress and osmotic stress tolerance in Arabidopsis.
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