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Related Experiment Video

Updated: Oct 1, 2025

Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

A conserved superlocus regulates above- and belowground root initiation.

Moutasem Omary¹, Naama Gil-Yarom¹, Chen Yahav¹

¹The Institute of Plant Science and Genetics in Agriculture, Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel.

Science (New York, N.Y.)

|March 3, 2022

Summary

This summary is machine-generated.

Plants can grow roots from shoots, not just underground. A new study reveals a key gene, SHOOTBORNE ROOTLESS (SBRL), controls this process, offering insights into plant development.

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Area of Science:

Plant Biology
Developmental Biology
Genetics

Background:

Plants exhibit remarkable plasticity in organ formation, adapting to environmental cues.
While lateral roots develop underground, the mechanism for shoot-borne root formation remains unclear.

Purpose of the Study:

To elucidate the cellular and molecular mechanisms underlying shoot-borne root development in tomato (Solanum lycopersicum).
To identify key genetic factors regulating this unique developmental pathway.

Main Methods:

Single-cell resolution mapping of tomato shoot-borne root development.
Identification and characterization of a novel transcription factor, SHOOTBORNE ROOTLESS (SBRL).
Evolutionary analysis of SBRL and its paralogs.

Main Results:

Shoot-borne roots originate from phloem-associated cells via a distinct transition state.
The transcription factor SBRL is essential for activating this transition state.
SBRL's function and regulatory elements are conserved across angiosperms, with paralogs involved in other root formation processes.

Conclusions:

A conserved transition state, regulated by context-specific factors like SBRL, underlies the plasticity of plant root systems.
Understanding SBRL provides insights into the evolution of root development and organogenesis.