H2O2 regulates root system architecture by modulating the polar transport and redistribution of auxin

Su, Chao, Liu, Liu, Liu, Haipei, Ferguson, Brett J., Zou, Yanmin, Zhao, Yankun, Wang, Tao, Wang, Youning and Li, Xia (2016) H2O2 regulates root system architecture by modulating the polar transport and redistribution of auxin. Journal of Plant Biology, 59 3: 260-270. doi:10.1007/s12374-016-0052-1


Author Su, Chao
Liu, Liu
Liu, Haipei
Ferguson, Brett J.
Zou, Yanmin
Zhao, Yankun
Wang, Tao
Wang, Youning
Li, Xia
Title H2O2 regulates root system architecture by modulating the polar transport and redistribution of auxin
Formatted title
H2O2 regulates root system architecture by modulating the polar transport and redistribution of auxin
Journal name Journal of Plant Biology   Check publisher's open access policy
ISSN 1226-9239
1867-0725
Publication date 2016-06-01
Year available 2016
Sub-type Article (original research)
DOI 10.1007/s12374-016-0052-1
Open Access Status Not Open Access
Volume 59
Issue 3
Start page 260
End page 270
Total pages 11
Place of publication New York, NY, United States
Publisher Springer New York LLC
Collection year 2017
Language eng
Formatted abstract
The accumulation and redistribution of the plant hormone auxin plays a crucial role in root development and patterning. Plants can alter their root system architecture (RSA) to adapt to different biotic and abiotic stresses. In addition, reactive oxygen species (ROS), such as H2O2, are known to increase in plants undergoing stress. Here, we present evidence that H2O2 can regulate auxin accumulation and redistribution through modulating polar auxin transport, leading to changes in RSA. Plants exposed to different concentrations of H2O2 formed a highly branched root system with abundant lateral roots and a shorter primary root. Monitoring of the auxin responsive DR5::GUS indicated that auxin accumulation decreased in lateral root primordia (LRP) and emerging lateral root tips. In addition, polar auxin transport, including both basipetal and acropetal transport modulated by AUX1 and PIN protein carriers, was involved in the process. Taken together, our results suggest that H2O2 could regulate plastic RSA by perturbing polar auxin transport as a means of modulating the accumulation and distribution of auxin.
Keyword Auxin
Auxin redistribution
H2O2
Polar auxin transport
Root system architecture
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Agriculture and Food Sciences
 
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