Skip to main content

Research Repository

See what's under the surface

Advanced Search

LARGE ROOT ANGLE1, encoding OsPIN2, is involved in root system architecture in rice

Wang, Lingling; Guo, Mengxue; Li, Yong; Ruan, Wenyuan; Mo, Xiaorong; Wu, Zhongchang; Sturrock, Craig; Yu, Hao; Lu, Chungui; Peng, Jinrong; Mao, Chuanzao

Authors

Lingling Wang

Mengxue Guo

Yong Li

Wenyuan Ruan

Xiaorong Mo

Zhongchang Wu

Craig Sturrock craig.sturrock@nottingham.ac.uk

Hao Yu

Chungui Lu chungui.lu@ntu.ac.uk

Jinrong Peng

Chuanzao Mao mcz@zju.edu.cn



Abstract

Root system architecture is very important for plant growth and crop yield. It is essential for nutrient and water uptake, anchoring, and mechanical support. Root growth angle (RGA) is a vital constituent of root system architecture and is used as a parameter for variety evaluation in plant breeding. However, little is known about the underlying molecular mechanisms that determine root growth angle in rice (Oryza sativa). In this study, a rice mutant large root angle1 (lra1) was isolated and shown to exhibit a large RGA and reduced sensitivity to gravity. Genome resequencing and complementation assays identified OsPIN2 as the gene responsible for the mutant phenotypes. OsPIN2 was mainly expressed in roots and the base of shoots, and showed polar localization in the plasma membrane of root epidermal and cortex cells. OsPIN2 was shown to play an important role in mediating root gravitropic responses in rice and was essential for plants to produce normal RGAs. Taken together, our findings suggest that OsPIN2 plays an important role in root gravitropic responses and determining the root system architecture in rice by affecting polar auxin transport in the root tip.

Journal Article Type Article
Journal Journal of Experimental Botany
Print ISSN 0022-0957
Electronic ISSN 1460-2431
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
APA6 Citation Wang, L., Guo, M., Li, Y., Ruan, W., Mo, X., Wu, Z., …Mao, C. (in press). LARGE ROOT ANGLE1, encoding OsPIN2, is involved in root system architecture in rice. Journal of Experimental Botany, https://doi.org/10.1093/jxb/erx427
DOI https://doi.org/10.1093/jxb/erx427
Keywords Auxin, gravitropism, OsPIN2, rice, root growth angle, root system architecture
Publisher URL https://academic.oup.com/jxb/advance-article/doi/10.1093/jxb/erx427/4773865
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

Files

erx427.pdf (1.5 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

;