Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 545437
Title Root branching toward water involves posttranslational modification of transcription factor ARF7
Author(s) Orosa-Puente, Beatriz; Leftley, Nicola; Wangenheim, Daniel von; Banda, Jason; Srivastava, Anjil K.; Hill, Kristine; Truskina, Jekaterina; Bhosale, Rahul; Morris, Emily; Srivastava, Moumita; Kümpers, Britta; Goh, Tatsuaki; Fukaki, Hidehiro; Vermeer, Joop E.M.; Vernoux, Teva; Dinneny, José R.; French, Andrew P.; Bishopp, Anthony; Sadanandom, Ari; Bennett, Malcolm J.
Source Science 362 (2018)6421. - ISSN 0036-8075 - p. 1407 - 1410.
DOI https://doi.org/10.1126/science.aau3956
Department(s) Laboratory of Cell Biology
Publication type Refereed Article in a scientific journal
Publication year 2018
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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