Directional auxin transport mechanisms in early diverging land plants
- Viaene, Tom Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Genetics, Ghent University, Belgium
- Landberg, Katarina Department of Plant Biology, Uppsala BioCenter, Linnean Centre of Plant Biology in Uppsala, Swedish University of Agricultural Sciences, Sweden
- Thelander, Mattias Department of Plant Biology, Uppsala BioCenter, Linnean Centre of Plant Biology in Uppsala, Swedish University of Agricultural Sciences, Sweden
- Medvecka, Eva Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Genetics, Ghent University, Belgium - Mendel Centre for Genomics and Proteomics of Plants Systems, Central European Institute of Technology (CEITEC MU), Masaryk University, Brno, Czech Republic
- Pederson, Eric Department of Plant Biology, Uppsala BioCenter, Linnean Centre of Plant Biology in Uppsala, Swedish University of Agricultural Sciences, Sweden
- Feraru, Elena Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Genetics, Ghent University, Belgium -
- Cooper, Endymion D. Cell Biology and Molecular Genetics and the Maryland Agricultural Experiment Station, University of Maryland, College Park, USA
- Karimi, Mansour Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Genetics, Ghent University, Belgium
- Delwiche, Charles F. Cell Biology and Molecular Genetics and the Maryland Agricultural Experiment Station, University of Maryland, College Park, USA
- Ljung, Karin Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå, Sweden
- Geisler, Markus Plant Biology, Department of Biology, University of Fribourg, Switzerland
- Sundberg, Eva Department of Plant Biology, Uppsala BioCenter, Linnean Centre of Plant Biology in Uppsala, Swedish University of Agricultural Sciences, Sweden
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01.12.2014
Published in:
- Current Biology. - 2014, vol. 24, no. 23, p. 2786–2791
English
The emergence and radiation of multicellular land plants was driven by crucial innovations to their body plans [1]. The directional transport of the phytohormone auxin represents a key, plant-specific mechanism for polarization and patterning in complex seed plants [2, 3, 4 and 5]. Here, we show that already in the early diverging land plant lineage, as exemplified by the moss Physcomitrella patens, auxin transport by PIN transporters is operational and diversified into ER-localized and plasma membrane-localized PIN proteins. Gain-of-function and loss-of-function analyses revealed that PIN-dependent intercellular auxin transport in Physcomitrella mediates crucial developmental transitions in tip-growing filaments and waves of polarization and differentiation in leaf-like structures. Plasma membrane PIN proteins localize in a polar manner to the tips of moss filaments, revealing an unexpected relation between polarization mechanisms in moss tip-growing cells and multicellular tissues of seed plants. Our results trace the origins of polarization and auxin-mediated patterning mechanisms and highlight the crucial role of polarized auxin transport during the evolution of multicellular land plants.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Biologie
- Language
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- English
- Classification
- Biological sciences
- License
- License undefined
- Identifiers
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- RERO DOC 234196
- DOI 10.1016/j.cub.2014.09.056
- Persistent URL
- https://folia.unifr.ch/unifr/documents/304040
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