Jing Yang
Dynamic regulation of auxin response during rice development revealed by newly established hormone biosensor markers
Yang, Jing; Yuan, Zheng; Meng, Qingcai; Huang, Guoqiang; P�rin, Christophe; Bureau, Charlotte; Meunier, Anne-C�cile; Ingouff, Mathieu; Bennett, Malcolm J.; Liang, Wanqi; Zhang, Dabing
Authors
Zheng Yuan
Qingcai Meng
Guoqiang Huang
Christophe P�rin
Charlotte Bureau
Anne-C�cile Meunier
Mathieu Ingouff
MALCOLM BENNETT malcolm.bennett@nottingham.ac.uk
Professor of Plant Science
Wanqi Liang
Dabing Zhang
Abstract
© 2017 Yang, Yuan, Meng, Huang, Périn, Bureau, Meunier, Ingouff, Bennett, Liang and Zhang. The hormone auxin is critical for many plant developmental processes. Unlike the model eudicot plant Arabidopsis (Arabidopsis thaliana), auxin distribution and signaling in rice tissues has not been systematically investigated due to the absence of suitable auxin response reporters. In this study we observed the conservation of auxin signaling components between Arabidopsis and model monocot crop rice (Oryza sativa), and generated complementary types of auxin biosensor constructs, one derived from the Aux/IAA-based biosensor DII-VENUS but constitutively driven by maize ubiquitin-1 promoter, and the other termed DR5-VENUS in which a synthetic auxin-responsive promoter (DR5rev) was used to drive expression of the yellow fluorescent protein (YFP). Using the obtained transgenic lines, we observed that during the vegetative development, accumulation of DR5-VENUS signal was at young and mature leaves, tiller buds and stem base. Notably, abundant DR5-VENUS signals were observed in the cytoplasm of cortex cells surrounding lateral root primordia (LRP) in rice. In addition, auxin maxima and dynamic re-localization were seen at the initiation sites of inflorescence and spikelet primordia including branch meristems (BMs), female and male organs. The comparison of these observations among Arabidopsis, rice and maize suggests the unique role of auxin in regulating rice lateral root emergence and reproduction. Moreover, protein localization of auxin transporters PIN1 homologs and GFP tagged OsAUX1 overlapped with DR5-VENUS during spikelet development, helping validate these auxin response reporters are reliable markers in rice. This work firstly reveals the direct correspondence between auxin distribution and rice reproductive and root development at tissue and cellular level, and provides high-resolution auxin tools to probe fundamental developmental processes in rice and to establish links between auxin, development and agronomical traits like yield or root architecture.
Citation
Yang, J., Yuan, Z., Meng, Q., Huang, G., Périn, C., Bureau, C., …Zhang, D. (2017). Dynamic regulation of auxin response during rice development revealed by newly established hormone biosensor markers. Frontiers in Plant Science, 8, https://doi.org/10.3389/fpls.2017.00256
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 10, 2017 |
Online Publication Date | Mar 7, 2017 |
Publication Date | Mar 7, 2017 |
Deposit Date | Jul 26, 2017 |
Publicly Available Date | Jul 26, 2017 |
Journal | Frontiers in Plant Science |
Electronic ISSN | 1664-462X |
Publisher | Frontiers Media |
Peer Reviewed | Peer Reviewed |
Volume | 8 |
DOI | https://doi.org/10.3389/fpls.2017.00256 |
Keywords | rice, auxin, reporter, lateral root formation, inflorescence, spikelet, meristem |
Public URL | https://nottingham-repository.worktribe.com/output/848909 |
Publisher URL | http://journal.frontiersin.org/article/10.3389/fpls.2017.00256/full |
Contract Date | Jul 26, 2017 |
Files
fpls-08-00256.pdf
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
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