ArticleJournal of experimental botany2013
The Arabidopsis small GTPase AtRAC7/ROP9 is a modulator of auxin and abscisic acid signalling.
Article in Journal of experimental botany, 2013. 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, 32 citations in OpenAlex.
- A GhSnRK10-GhRopGEF5-GhROP10 signaling pathway regulates cotton fiber cell growth.Plant communications · 2025Article
- Review
- Article
- GWAS of adventitious root formation in roses identifies a putative phosphoinositide phosphatase (SAC9) for marker-assisted selection.PloS one · 2023Article
- Genome-wide association analysis reveals the optimal genomic regions for pod size in bean.Frontiers in plant science · 2023Article
- ROP signaling regulates spatial pattern of cell division and specification of meristem notch.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- eIF4E1 RegulatesFrontiers in plant science · 2022Article
- Expression Levels of Genes Encoding Proteins Involved in the Cell Wall-Plasma Membrane-Cytoskeleton Continuum Are Associated With the Maturation-Related Adventitious Rooting Competence of Pine Stem Cuttings.Frontiers in plant science · 2021Article
- Guanine Nucleotide Exchange Factor 7B (RopGEF7B) is involved in floral organ development in Oryza sativa.Rice (New York, N.Y.) · 2018Article
- ROP GTPases Structure-Function and Signaling Pathways.Plant physiology · 2018Review
- An Arabidopsis kinase cascade influences auxin-responsive cell expansion.The Plant journal : for cell and molecular biology · 2017Article
- Annexins as Overlooked Regulators of Membrane Trafficking in Plant Cells.International journal of molecular sciences · 2017Review
- Abscisic Acid: Hidden Architect of Root System Structure.Plants (Basel, Switzerland) · 2015Review
- The crystal structure of the plant small GTPase OsRac1 reveals its mode of binding to NADPH oxidase.The Journal of biological chemistry · 2014Article
Corrections and comments
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Authors and funding
5 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rac-like GTPases or Rho-related GTPases from plants (RAC/ROPs) are important components of hormone signalling pathways in plants. Based on phylogeny, several groups can be distinguished, and the underlying premise is that members of different groups perform distinct functions in the plant. AtRAC7/ROP9 is phylogenetically unique among 11 Arabidopsis RAC/ROPs, and here it was shown that it functions as a modulator of auxin and abscisic acid (ABA) signalling, a dual role not previously assigned to these small GTPases. Plants with reduced levels of AtRAC7/ROP9 had increased sensitivity to auxin and were less sensitive to ABA. On the other hand, overexpressing AtRAC7/ROP9 activated ABA-induced gene expression but repressed auxin-induced gene expression. In addition, both hormones regulated the activity of the AtRAC7/ROP9 promoter, suggesting a feedback mechanism to modulate the signalling output from the AtRAC7/ROP9-controlled molecular switch. High levels of AtRAC7/ROP9 were detected specifically in embryos and lateral roots, underscoring the important role of this protein during embryo development and lateral root formation. These results place AtRAC7/ROP9 as an important signal transducer in recently described pathways that integrate auxin and ABA signalling in the plant.
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