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Orosa-Puente B, Leftley N, von Wangenheim D, Banda J, Srivastava AK, Hill K, Truskina J, Bhosale R, Morris E, Srivastava M, Kümpers B, Goh T, Fukaki H, Vermeer JEM, Vernoux T, Dinneny JR, French AP, Bishopp A, Sadanandom A, Bennett MJ. Root branching toward water involves posttranslational modification of transcription factor ARF7. Science 2018; 362:1407-1410. [PMID: 30573626 DOI: 10.1126/science.aau3956] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 11/06/2018] [Indexed: 01/01/2023]
Abstract
Plants adapt to heterogeneous soil conditions by altering their root architecture. For example, roots branch when in contact with water by using the hydropatterning response. We report that hydropatterning is dependent on auxin response factor ARF7. This transcription factor induces asymmetric expression of its target gene LBD16 in lateral root founder cells. This differential expression pattern is regulated by posttranslational modification of ARF7 with the small ubiquitin-like modifier (SUMO) protein. SUMOylation negatively regulates ARF7 DNA binding activity. ARF7 SUMOylation is required to recruit the Aux/IAA (indole-3-acetic acid) repressor protein IAA3. Blocking ARF7 SUMOylation disrupts IAA3 recruitment and hydropatterning. We conclude that SUMO-dependent regulation of auxin response controls root branching pattern in response to water availability.
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Affiliation(s)
| | - Nicola Leftley
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
| | - Daniel von Wangenheim
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
| | - Jason Banda
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
| | | | - Kristine Hill
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
| | - Jekaterina Truskina
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
- Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, F-69342, Lyon, France
| | - Rahul Bhosale
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
| | - Emily Morris
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
| | | | - Britta Kümpers
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
| | - Tatsuaki Goh
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
- Department of Biology, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Hidehiro Fukaki
- Department of Biology, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Joop E M Vermeer
- Department of Plant and Microbial Biology, University of Zurich, CH-8008 Zurich, Switzerland
- Developmental Biology, Wageningen University and Research, Wageningen, Netherlands
| | - Teva Vernoux
- Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, F-69342, Lyon, France
| | - José R Dinneny
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Andrew P French
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
- School of Computer Science, Jubilee Campus, University of Nottingham, Nottingham NG8 1BB, UK
| | - Anthony Bishopp
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK
| | - Ari Sadanandom
- Department of Biosciences, University of Durham, Durham DH1 3LE, UK.
| | - Malcolm J Bennett
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK.
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