期刊
SCIENCE
卷 370, 期 6516, 页码 550-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aba3178
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资金
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [742985]
- Austrian Science Fund (FWF) [I 3630-B25]
- Austrian Academy of Science through the Gregor Mendel Institute
- Austrian Agency for International Cooperation in Education and Research
- Netherlands Organization for Scientific Research (NWO) [VIDI864.13.001]
- Research Foundation-Flanders (FWO) [Odysseus II G0D0515N]
- European Research Council (ERC) [714055]
- Hertha Firnberg Programme postdoctoral fellowship from the FWF Austrian Science Fund [T-947]
- Austrian Academy of Sciences at IST Austria
- European Research Council (ERC) [714055] Funding Source: European Research Council (ERC)
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.
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