Skip to main content

Research Repository

See what's under the surface

Rice auxin influx carrier OsAUX1 facilitates root hair elongation in response to low external phosphate

Giri, Jitender; Bhosale, Rahul; Huang, Guoqiang; Pandey, Bipin K.; Parker, Helen; Zappala, Susan; Yang, Jing; Dievart, Anne; Bureau, Charlotte; Ljung, Karin; Price, Adam; Rose, Terry; Larrieu, Antoine; Mairhofer, Stefan; Sturrock, Craig J.; White, Philip; Dupuy, Lionel; Hawkesford, Malcolm; Perin, Christophe; Liang, Wanqi; Peret, Benjamin; Hodgman, Charlie T.; Lynch, Jonathan; Wissuwa, Matthias; Zhang, Dabing; Pridmore, Tony; Mooney, Sacha J.; Guiderdoni, Emmanuel; Swarup, Ranjan; Bennett, Malcolm J.

Authors

Jitender Giri

Rahul Bhosale

Guoqiang Huang

Bipin K. Pandey

Helen Parker

Susan Zappala

Profile Image

JING YANG jing.yang@nottingham.ac.uk
Assistant Professor

Anne Dievart

Charlotte Bureau

Karin Ljung

Adam Price

Terry Rose

Antoine Larrieu

Stefan Mairhofer

Craig J. Sturrock

Philip White

Lionel Dupuy

Malcolm Hawkesford

Christophe Perin

Wanqi Liang

Benjamin Peret benjamin.peret@cnrs.fr

Charlie T. Hodgman

Jonathan Lynch

Matthias Wissuwa

Dabing Zhang

Tony Pridmore

Sacha J. Mooney

Emmanuel Guiderdoni

Ranjan Swarup



Abstract

Root traits such as root angle and hair length influence resource acquisition particularly for immobile nutrients like phosphorus (P). Here, we attempted to modify root angle in rice by disrupting the OsAUX1 auxin influx transporter gene in an effort to improve rice P acquisition efficiency. We show by X-ray microCT imaging that root angle is altered in the osaux1 mutant, causing preferential foraging in the top soil where P normally accumulates, yet surprisingly, P acquisition efficiency does not improve. Through closer investigation, we reveal that OsAUX1 also promotes root hair elongation in response to P limitation. Reporter studies reveal that auxin response increases in the root hair zone in low P environments. We demonstrate that OsAUX1 functions to mobilize auxin from the root apex to the differentiation zone where this signal promotes hair elongation when roots encounter low external P. We conclude that auxin and OsAUX1 play key roles in promoting root foraging for P in rice.

Journal Article Type Article
Publication Date 2018-12
Journal Nature Communications
Electronic ISSN 2041-1723
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 9
Issue 1408
APA6 Citation Giri, J., Bhosale, R., Huang, G., Pandey, B. K., Parker, H., Zappala, S., …Bennett, M. J. (2018). Rice auxin influx carrier OsAUX1 facilitates root hair elongation in response to low external phosphate. Nature Communications, 9(1408), doi:10.1038/s41467-018-03850-4
DOI https://doi.org/10.1038/s41467-018-03850-4
Publisher URL https://www.nature.com/articles/s41467-018-03850-4
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
Additional Information Received: 9 January 2017; Accepted: 16 March 2018; First Online: 12 April 2018; Change Date: 1 May 2018; Change Type: Correction; Change Details: The original version of this Article omitted the following from the Acknowledgements:‘We also thank DBT-CREST BT/HRD/03/01/2002.’This has been corrected in both the PDF and HTML versions of the Article.; : The authors declare no competing interests.

Files

s41467-018-03850-4.pdf (2 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





You might also like



Downloadable Citations