Receptor kinase module targets PIN-dependent auxin transport during canalization.
Science
; 370(6516): 550-557, 2020 10 30.
Article
em En
| MEDLINE
| ID: mdl-33122378
ABSTRACT
Spontaneously arising channels that transport the phytohormone auxin provide positional cues for self-organizing aspects of plant development such as flexible vasculature regeneration or its patterning during leaf venation. The auxin canalization hypothesis proposes a feedback between auxin signaling and transport as the underlying mechanism, but molecular players await discovery. We identified part of the machinery that routes auxin transport. The auxin-regulated receptor CAMEL (Canalization-related Auxin-regulated Malectin-type RLK) together with CANAR (Canalization-related Receptor-like kinase) interact with and phosphorylate PIN auxin transporters. camel and canar mutants are impaired in PIN1 subcellular trafficking and auxin-mediated PIN polarization, which macroscopically manifests as defects in leaf venation and vasculature regeneration after wounding. The CAMEL-CANAR receptor complex is part of the auxin feedback that coordinates polarization of individual cells during auxin canalization.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Proteínas Quinases
/
Arabidopsis
/
Ácidos Indolacéticos
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Science
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Áustria