ArticleScientific reports2019
Gibberellins negatively regulate the development of Medicago truncatula root system.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 42 citations in OpenAlex.
- Exogenous Hormone Treatments Reveal Species-Specific Regulation of Individual Components of Root Architecture and Salt Ion Accumulation in Cultivated and Wild Tomatoes.Plant direct · 2026Article
- Gibberellin biosynthesis inFrontiers in plant science · 2026Article
- A mobile DELLA controls Medicago truncatula root cortex patterning to host arbuscular mycorrhizal fungi.Nature plants · 2025Article
- Response of hidden architects to salt stress.Planta · 2025Review
- Gibberellin dynamics governing nodulation revealed using GIBBERELLIN PERCEPTION SENSOR 2 in Medicago truncatula lateral organs.The Plant cell · 2024Article
- Nitrate Starvation Induces Lateral Root Organogenesis inInternational journal of molecular sciences · 2024Article
- Phytohormones and related genes function as physiological and molecular switches regulating water stress response in the sunflower.Physiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Overexpression of SlPRE3 alters the plant morphologies in Solanum lycopersicum.Plant cell reports · 2023Article
- Effects of arbuscular mycorrhizal fungus inoculation on the growth and nitrogen metabolism ofFrontiers in plant science · 2023Article
- Plant Development and Crop Yield: The Role of Gibberellins.Plants (Basel, Switzerland) · 2022Review
- Response characteristics of root to moisture change at seedling stage ofFrontiers in plant science · 2022Article
- It's Time for a Change: The Role of Gibberellin in Root Meristem Development.Frontiers in plant science · 2022Review
- Multifarious and Interactive Roles of GRAS Transcription Factors During Arbuscular Mycorrhiza Development.Frontiers in plant science · 2022Review
- Gibberellin in tomato: metabolism, signaling and role in drought responses.Molecular horticulture · 2021Review
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The root system displays a remarkable plasticity that enables plants to adapt to changing environmental conditions. This plasticity is tightly linked to the activity of root apical meristems (RAMs) and to the formation of lateral roots, both controlled by related hormonal crosstalks. In Arabidopsis thaliana, gibberellins (GAs) were shown to positively control RAM growth and the formation of lateral roots. However, we showed in Medicago truncatula that GAs negatively regulate root growth and RAM size as well as the number of lateral roots depending at least on the MtDELLA1 protein. By using confocal microscopy and molecular analyses, we showed that GAs primarily regulate RAM size by affecting cortical cell expansion and additionally negatively regulate a subset of cytokinin-induced root expansin encoding genes. Moreover, GAs reduce the number of cortical cell layers, resulting in the formation of both shorter and thinner roots. These results suggest contrasting effects of GA regulations on the root system architecture depending on plant species.
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