Early selection of bZIP73 facilitated adaptation of japonica rice to cold climates

Authors

Citao Liu, Chinese Academy of Sciences
Shujun OU, Chinese Academy of Sciences
Bigang Mao, China National Hybrid Rice Research and Development Center
Jiuyou Tang, Chinese Academy of Sciences
Wei Wang, Chinese Academy of Sciences
Hongru Wang, Chinese Academy of Sciences
Shouyun Cao, Chinese Academy of Sciences
Michael Schläppi, Marquette UniversityFollow
Bingran Zhao, China National Hybrid Rice Research and Development Center
Guoying Xiao, Institute of Subtropical Agriculture Chinese Academy of Sciences
Xiping Wang, Beijing Normal University
Chengeai Chu, Chinese Academy of SciencesFollow

Document Type

Article

Language

eng

Publication Date

8-17-2018

Publisher

Nature Publishing Group

Source Publication

Nature Communications

Source ISSN

2041-1723

Abstract

Cold stress is a major factor limiting production and geographic distribution of rice (Oryza sativa). Although the growth range of japonica subspecies has expanded northward compared to modern wild rice (O. rufipogon), the molecular basis of the adaptation remains unclear. Here we report bZIP73, a bZIP transcription factor-coding gene with only one functional polymorphism (+511 G>A) between the two subspecies japonica and indica, may have facilitated japonica adaptation to cold climates. We show the japonica version of bZIP73 (bZIP73^Jap) interacts with bZIP71 and modulates ABA levels and ROS homeostasis. Evolutionary and population genetic analyses suggest bZIP73 has undergone balancing selection; the bZIP73^Jap allele has firstly selected from standing variations in wild rice and likely facilitated cold climate adaptation during initial japonica domestication, while the indica allele bZIP73^Ind was subsequently selected for reasons that remain unclear. Our findings reveal early selection of bZIP73^Jap may have facilitated climate adaptation of primitive rice germplasms.

Comments

Published version. Nature Communications, Vol. 9, No. 3302 (August 17, 2018). DOI. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/..

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

Liu, Citao; OU, Shujun; Mao, Bigang; Tang, Jiuyou; Wang, Wei; Wang, Hongru; Cao, Shouyun; Schläppi, Michael; Zhao, Bingran; Xiao, Guoying; Wang, Xiping; and Chu, Chengeai, "Early selection of bZIP73 facilitated adaptation of japonica rice to cold climates" (2018). Biological Sciences Faculty Research and Publications. 692.
https://epublications.marquette.edu/bio_fac/692