A conserved superlocus regulates above- and belowground root initiation

Omary, Moutasem, Gil-Yarom, Naama, Yahav, Chen, Steiner, Evyatar, Hendelman, Anat, Efroni, Idan (March 2022) A conserved superlocus regulates above- and belowground root initiation. Science, 375 (6584). eabf4368. ISSN 0036-8075

URL: https://www.ncbi.nlm.nih.gov/pubmed/35239373
DOI: 10.1126/science.abf4368


Plants continuously form new organs in different developmental contexts in response to environmental cues. Underground lateral roots initiate from prepatterned cells in the main root, but cells can also bypass the root-shoot trajectory separation and generate shoot-borne roots through an unknown mechanism. We mapped tomato (Solanum lycopersicum) shoot-borne root development at single-cell resolution and showed that these roots initiate from phloem-associated cells through a unique transition state. This state requires the activity of a transcription factor that we named SHOOTBORNE ROOTLESS (SBRL). Evolutionary analysis reveals that SBRL's function and cis regulation are conserved in angiosperms and that it arose as an ancient duplication, with paralogs controlling wound-induced and lateral root initiation. We propose that the activation of a common transition state by context-specific regulators underlies the plasticity of plant root systems.

Item Type: Paper
Subjects: organism description > plant behavior > plant orientation
organs, tissues, organelles, cell types and functions > tissues types and functions > root
organism description > plant > tomato
CSHL Authors:
Communities: CSHL labs > Lippman lab
SWORD Depositor: CSHL Elements
Depositing User: CSHL Elements
Date: 4 March 2022
Date Deposited: 10 Mar 2022 14:47
Last Modified: 10 Mar 2022 14:47
URI: https://repository.cshl.edu/id/eprint/40546

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