ArticleThe Plant journal : for cell and molecular biology2019
MtABCG20 is an ABA exporter influencing root morphology and seed germination of Medicago truncatula.
Article in The Plant journal : for cell and molecular biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
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31 citing papers in PubMed, 72 citations in OpenAlex.
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- Identification and intra-genus conservation analysis of non-conventional peptides in hybrid poplar 84K.Forestry research · 2026Article
- Response of hidden architects to salt stress.Planta · 2025Review
- The triggering mechanism for predominant hormonal signal production in fleshy fruit ripening.Molecular horticulture · 2025Review
- Plant Signaling Hormones and Transcription Factors: Key Regulators of Plant Responses to Growth, Development, and Stress.Plants (Basel, Switzerland) · 2025Review
- ABA importers ABCG17 and ABCG18 redundantly regulate seed size in Arabidopsis.The Plant journal : for cell and molecular biology · 2025Article
- Plant hormones and membrane transporters: integrating nutrient uptake, ion homeostasis, and stress responses through hormonal cross-talk.Frontiers in plant science · 2025Review
- Spatiotemporal transcriptomic plasticity in barley roots: unravelling water deficit responses in distinct root zones.BMC genomics · 2024Article
- Cryo-EM structure and molecular mechanism of abscisic acid transporter ABCG25.Nature plants · 2023Article
- Structural basis for abscisic acid efflux mediated by ABCG25 in Arabidopsis thaliana.Nature plants · 2023Article
- Red LED Light Improves Pepper (International journal of molecular sciences · 2023Article
- Tomato ABA-IMPORTING TRANSPORTER 1.1 inhibits seed germination under high salinity conditions.Plant physiology · 2023Article
- GmABCG5, an ATP-binding cassette G transporter gene, is involved in the iron deficiency response in soybean.Frontiers in plant science · 2023Article
- Article
- In Dormant Red Rice Seeds, the Inhibition of Early Seedling Growth, but Not of Germination, Requires Extracellular ABA.Plants (Basel, Switzerland) · 2022Article
- Salicylic Acid in Root Growth and Development.International journal of molecular sciences · 2022Review
- Screening of ABA Transporters by a Yeast Two-Hybrid System-Based Screening Using the Receptor Complex as a Sensor.Methods in molecular biology (Clifton, N.J.) · 2022Article
- Updated role of ABA in seed maturation, dormancy, and germination.Journal of advanced research · 2022Review
- A roadmap of plant membrane transporters in arbuscular mycorrhizal and legume-rhizobium symbioses.Plant physiology · 2021Review
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Abscisic acid (ABA) integrates internal and external signals to coordinate plant development, growth and architecture. It plays a central role in stomatal closure, and prevents germination of freshly produced seeds and germination of non-dormant seeds under unfavorable circumstances. Here, we describe a Medicago truncatula ATP-binding cassette (ABC) transporter, MtABCG20, as an ABA exporter present in roots and germinating seeds. In seeds, MtABCG20 was found in the hypocotyl-radicle transition zone of the embryonic axis. Seeds of mtabcg20 plants were more sensitive to ABA upon germination, due to the fact that ABA translocation within mtabcg20 embryos was impaired. Additionally, the mtabcg20 produced fewer lateral roots and formed more nodules compared with wild-type plants in conditions mimicking drought stress. Heterologous expression in Arabidopsis thaliana provided evidence that MtABCG20 is a plasma membrane protein that is likely to form homodimers. Moreover, export of ABA from Nicotiana tabacum BY2 cells expressing MtABCG20 was faster than in the BY2 without MtABCG20. Our results have implications both in legume crop research and determination of the fundamental molecular processes involved in drought response and germination.
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