title: CLE peptide signaling and nitrogen interactions in plant root development.
abstract: The CLAVATA signaling pathway is essential for the regulation of meristem activities in plants. This signaling pathway consists of small signaling peptides of the CLE family interacting with CLAVATA1 and leucine-rich repeat receptor-like kinases (LRR-RLKs). The peptide-receptor relationships determine the specificities of CLE-dependent signals controlling stem cell fate and differentiation that are critical for the establishment and maintenance of shoot and root apical meristems. Plants root systems are highly organized into three-dimensional structures for successful anchoring and uptake of water and mineral nutrients from the soil environment. Recent studies have provided evidence that CLE peptides and CLAVATA signaling pathways play pivotal roles in the regulation of lateral root development and systemic autoregulation of nodulation (AON) integrated with nitrogen (N) signaling mechanisms. Integrations of CLE and N signaling pathways through shoot-root vascular connections suggest that N demand modulates morphological control mechanisms and optimize N uptake as well as symbiotic N fixation in roots.
authors.affiliation: Leibniz Institute of Plant Genetics and Crop Plant Research, 06466, Gatersleben, Germany.
authors.forename: Takao
authors.initials: T
authors.lastname: Araya
authors.affiliation: Leibniz Institute of Plant Genetics and Crop Plant Research, 06466, Gatersleben, Germany.
authors.forename: Nicolaus
authors.initials: N
authors.lastname: von Wirén
authors.affiliation: Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, MI, 48824, USA. htakaha@msu.edu.
authors.forename: Hideki
authors.initials: H
authors.lastname: Takahashi
mesh_terms: D018519:Meristem / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D008954:Models, Biological; D009584:Nitrogen / Q000494:pharmacology*; D010455:Peptides / Q000378:metabolism*; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development*; D015398:Signal Transduction / Q000187:drug effects*
chemical_list: D010455:Peptides; D009584:Nitrogen
keywords: CLAVATA; CLE; Nitrogen; Nodule development; Root development; Small signaling peptide