Skip to Main content Skip to Navigation
Journal articles

Local and Systemic Regulation of Plant Root System Architecture and Symbiotic Nodulation by a Receptor-Like Kinase

Abstract : In plants, root system architecture is determined by the activity of root apical meristems, which control the root growth rate, and by the formation of lateral roots. In legumes, an additional root lateral organ can develop: the symbiotic nitrogen-fixing nodule. We identified in Medicago truncatula ten allelic mutants showing a compact root architecture phenotype (cra2) independent of any major shoot phenotype, and that consisted of shorter roots, an increased number of lateral roots, and a reduced number of nodules. The CRA2 gene encodes a Leucine-Rich Repeat Receptor-Like Kinase (LRR-RLK) that primarily negatively regulates lateral root formation and positively regulates symbiotic nodulation. Grafting experiments revealed that CRA2 acts through different pathways to regulate these lateral organs originating from the roots, locally controlling the lateral root development and nodule formation systemically from the shoots. The CRA2 LRR-RLK therefore integrates short-and long-distance regulations to control root system architecture under non-symbiotic and symbiotic conditions.
Document type :
Journal articles
Complete list of metadatas

Cited literature [52 references]  Display  Hide  Download

https://hal-cnrs.archives-ouvertes.fr/hal-02410348
Contributor : Pascal Ratet <>
Submitted on : Wednesday, May 27, 2020 - 11:53:18 AM
Last modification on : Wednesday, November 18, 2020 - 4:42:05 PM

File

2014_Huault_Plos Genetics_1.pd...
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Emeline Huault, Carole Laffont, Jiangqi Wen, Kirankumar Mysore, Pascal Ratet, et al.. Local and Systemic Regulation of Plant Root System Architecture and Symbiotic Nodulation by a Receptor-Like Kinase. PLoS Genetics, Public Library of Science, 2014, 10 (12), pp.e1004891. ⟨10.1371/journal.pgen.1004891⟩. ⟨hal-02410348⟩

Share

Metrics

Record views

107

Files downloads

84