Abstract

Background

High soil salinity can cause significant losses in rice productivity worldwide, mainly because salt inhibits plant growth and reduces grain yield. To cope with environmental changes, plants have evolved several adaptive mechanisms that involve the regulation of many stress-responsive genes.

Results

In this study, we identified OsSTAP1, which encodes an AP2/ERF-type transcription factor, was rapidly induced by ABA, ACC, salt, cold, and PEG treatments. OsSTAP1 is localized to the nucleus and acts as a transcriptional activator in plant cells. Compared with wild type, transgenic lines overexpressing OsSTAP1 exhibited increased tolerance to salt stress with higher SOD, POD, and CAT activities, and lower Na+/K+ ratios in the shoots. In addition, many other stress-responsive genes, including other ERF- and peroxidase-encoding genes, were upregulated in the OsSTAP1-overexpression lines.

Conclusion

This study suggests that OsSTAP1 functions as an AP2/ERF transcriptional activator, and plays a positive role in salt tolerance by decreasing the Na+/K+ ratio and maintaining cellular redox homeostasis.

Details

Title
Overexpression of the Transcription Factor Gene OsSTAP1 Increases Salt Tolerance in Rice
Author
Wang, Yinxiao 1 ; Wang, Juan 2 ; Zhao Xiuqin 1 ; Yang, Sheng 1 ; Huang, Liyu 3 ; Du Fengping 1 ; Li, Zhikang 4 ; Zhao Xiangqiang 5 ; Fu Binying 1 ; Wang, Wensheng 4   VIAFID ORCID Logo 

1  Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China (GRID:grid.410727.7) (ISNI:0000 0001 0526 1937) 
2  Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China (GRID:grid.410727.7) (ISNI:0000 0001 0526 1937); School of Life Sciences, Nantong University, Nantong, China (GRID:grid.260483.b) (ISNI:0000 0000 9530 8833) 
3  School of Agriculture, Yunnan University, Kunming, China (GRID:grid.440773.3) (ISNI:0000 0000 9342 2456) 
4  Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, China (GRID:grid.410727.7) (ISNI:0000 0001 0526 1937); Anhui Agricultural University, Hefei, China (GRID:grid.411389.6) (ISNI:0000 0004 1760 4804) 
5  School of Life Sciences, Nantong University, Nantong, China (GRID:grid.260483.b) (ISNI:0000 0000 9530 8833) 
Publication year
2020
Publication date
Dec 2020
Publisher
Springer Nature B.V.
ISSN
19398425
e-ISSN
19348037
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1186/s12284-020-00405-4
ProQuest document ID
2426355030
Copyright
© The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.