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A conserved superlocus regulates above- and belowground root initiation.
- Source :
-
Science (New York, N.Y.) [Science] 2022 Mar 04; Vol. 375 (6584), pp. eabf4368. Date of Electronic Publication: 2022 Mar 04. - Publication Year :
- 2022
-
Abstract
- 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.
- Subjects :
- Gene Expression Regulation, Plant
Genetic Loci
Solanum lycopersicum genetics
Solanum lycopersicum metabolism
Magnoliopsida genetics
Magnoliopsida growth & development
Magnoliopsida metabolism
Meristem growth & development
Meristem metabolism
Plant Proteins genetics
Plant Roots cytology
Plant Roots metabolism
Plant Shoots cytology
Plant Shoots metabolism
RNA-Seq
Single-Cell Analysis
Transcription, Genetic
Genes, Plant
Solanum lycopersicum growth & development
Plant Roots growth & development
Plant Shoots growth & development
Subjects
Details
- Language :
- English
- ISSN :
- 1095-9203
- Volume :
- 375
- Issue :
- 6584
- Database :
- MEDLINE
- Journal :
- Science (New York, N.Y.)
- Publication Type :
- Academic Journal
- Accession number :
- 35239373
- Full Text :
- https://doi.org/10.1126/science.abf4368