Author
Listed:
- Zhaojun Ding
(Ghent University
The Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Sciences, Shandong University)
- Bangjun Wang
(Plant Biology, University of Fribourg)
- Ignacio Moreno
(Center for Genome Regulation, Center of Plant Biotechnology, Facultad de Ciencias Biologicas, Universidad Andres Bello)
- Nikoleta Dupláková
(Institute of Experimental Botany ASCR)
- Sibu Simon
(Ghent University)
- Nicola Carraro
(Purdue University)
- Jesica Reemmer
(Purdue University)
- Aleš Pěnčík
(Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University)
- Xu Chen
(Ghent University)
- Ricardo Tejos
(Ghent University)
- Petr Skůpa
(Institute of Experimental Botany ASCR)
- Stephan Pollmann
(Ruhr-Universität Bochum, Lehrstuhl für Pflanzenphysiologie)
- Jozef Mravec
(Ghent University)
- Jan Petrášek
(Institute of Experimental Botany ASCR)
- Eva Zažímalová
(Institute of Experimental Botany ASCR)
- David Honys
(Institute of Experimental Botany ASCR)
- Jakub Rolčík
(Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University)
- Angus Murphy
(Purdue University)
- Ariel Orellana
(Center for Genome Regulation, Center of Plant Biotechnology, Facultad de Ciencias Biologicas, Universidad Andres Bello)
- Markus Geisler
(Plant Biology, University of Fribourg)
- Jiří Friml
(Ghent University
Faculty of Science, and CEITEC, Masaryk University)
Abstract
Auxin is a key coordinative signal required for many aspects of plant development and its levels are controlled by auxin metabolism and intercellular auxin transport. Here we find that a member of PIN auxin transporter family, PIN8 is expressed in male gametophyte of Arabidopsis thaliana and has a crucial role in pollen development and functionality. Ectopic expression in sporophytic tissues establishes a role of PIN8 in regulating auxin homoeostasis and metabolism. PIN8 co-localizes with PIN5 to the endoplasmic reticulum (ER) where it acts as an auxin transporter. Genetic analyses reveal an antagonistic action of PIN5 and PIN8 in the regulation of intracellular auxin homoeostasis and gametophyte as well as sporophyte development. Our results reveal a role of the auxin transport in male gametophyte development in which the distinct actions of ER-localized PIN transporters regulate cellular auxin homoeostasis and maintain the auxin levels optimal for pollen development and pollen tube growth.
Suggested Citation
Zhaojun Ding & Bangjun Wang & Ignacio Moreno & Nikoleta Dupláková & Sibu Simon & Nicola Carraro & Jesica Reemmer & Aleš Pěnčík & Xu Chen & Ricardo Tejos & Petr Skůpa & Stephan Pollmann & Jozef Mravec , 2012.
"ER-localized auxin transporter PIN8 regulates auxin homeostasis and male gametophyte development in Arabidopsis,"
Nature Communications, Nature, vol. 3(1), pages 1-11, January.
Handle:
RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1941
DOI: 10.1038/ncomms1941
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