ArticlePlant physiology2006
Ectopic expression of pumpkin gibberellin oxidases alters gibberellin biosynthesis and development of transgenic Arabidopsis plants.
Article in Plant physiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 54 citations in OpenAlex.
- The ga3ox1b mutation reveals the crosstalk between gibberellin and other phytohormones in controlling the growth and development of female flowers in Cucurbita pepo.Journal of experimental botany · 2026Article
- Comparative Analysis of Phytohormone Biosynthesis Genes Responses to Long-Term High Light in Tolerant and Sensitive Wheat Cultivars.Plants (Basel, Switzerland) · 2024Article
- Adaptive Responses of Hormones to Nitrogen Deficiency inPlants (Basel, Switzerland) · 2024Article
- Characterization of the gibberellic oxidase geneFrontiers in plant science · 2024Article
- DWARF AND ROBUST PLANT regulates plant height via modulating gibberellin biosynthesis in chrysanthemum.Plant physiology · 2022Article
- The Class III Gibberellin 2-Oxidases AtGA2ox9 and AtGA2ox10 Contribute to Cold Stress Tolerance and Fertility.Plant physiology · 2020Article
- Cucumber gibberellin 1-oxidase/desaturase initiates novel gibberellin catabolic pathways.The Journal of biological chemistry · 2020Article
- Comprehensive Analysis of Cucumber Gibberellin Oxidase Family Genes and Functional Characterization ofInternational journal of molecular sciences · 2018Article
- Ectopic expression a tomato KNOX Gene Tkn4 affects the formation and the differentiation of meristems and vasculature.Plant molecular biology · 2015Article
- Molecular characterization and functional analysis of barley semi-dwarf mutant Riso no. 9265.BMC genomics · 2015Article
- Overexpression of Arabidopsis thaliana gibberellic acid 20 oxidase (AtGA20ox) gene enhance the vegetative growth and fiber quality in kenaf (Hibiscus cannabinus L.) plants.Breeding science · 2015Article
- Gibberellin 3-oxidase gene expression patterns influence gibberellin biosynthesis, growth, and development in pea.Plant physiology · 2013Article
- Proper gibberellin localization in vascular tissue is required to regulate adventitious root development in tobacco.Journal of experimental botany · 2013Article
- Genetic engineering and sustainable production of ornamentals: current status and future directions.Plant cell reports · 2012Review
- Engineering gibberellin metabolism in Solanum nigrum L. by ectopic expression of gibberellin oxidase genes.Plant cell reports · 2012Article
- Stamen-derived bioactive gibberellin is essential for male flower development of Cucurbita maxima L.Journal of experimental botany · 2012Article
- Genetic analysis reveals that C19-GA 2-oxidation is a major gibberellin inactivation pathway in Arabidopsis.The Plant cell · 2008Article
- Over-expression of a gibberellin 2-oxidase gene from Phaseolus coccineus L. enhances gibberellin inactivation and induces dwarfism in Solanum species.Plant cell reports · 2008Article
- Gibberellins and heterosis of plant height in wheat (Triticum aestivum L.).BMC genetics · 2007Article
- Long-term submergence-induced elongation in Rumex palustris requires abscisic acid-dependent biosynthesis of gibberellin1.Plant physiology · 2006Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Immature pumpkin (Cucurbita maxima) seeds contain gibberellin (GA) oxidases with unique catalytic properties resulting in GAs of unknown function for plant growth and development. Overexpression of pumpkin GA 7-oxidase (CmGA7ox) in Arabidopsis (Arabidopsis thaliana) resulted in seedlings with elongated roots, taller plants that flower earlier with only a little increase in bioactive GA4 levels compared to control plants. In the same way, overexpression of the pumpkin GA 3-oxidase1 (CmGA3ox1) resulted in a GA overdose phenotype with increased levels of endogenous GA4. This indicates that, in Arabidopsis, 7-oxidation and 3-oxidation are rate-limiting steps in GA plant hormone biosynthesis that control plant development. With an opposite effect, overexpression of pumpkin seed-specific GA 20-oxidase1 (CmGA20ox1) in Arabidopsis resulted in dwarfed plants that flower late with reduced levels of GA4 and increased levels of physiological inactive GA17 and GA25 and unexpected GA34 levels. Severe dwarfed plants were obtained by overexpression of the pumpkin GA 2-oxidase1 (CmGA2ox1) in Arabidopsis. This dramatic change in phenotype was accompanied by a considerable decrease in the levels of bioactive GA4 and an increase in the corresponding inactivation product GA34 in comparison to control plants. In this study, we demonstrate the potential of four pumpkin GA oxidase-encoding genes to modulate the GA plant hormone pool and alter plant stature and development.
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