文献类型： 外文期刊
作者： Zhao, Yiting 1 ; Wu, Lixia 1 ; Fu, Qijing 1 ; Wang, Dong 6 ; Li, Jing 7 ; Yao, Baolin 7 ; Yu, Si 1 ; Jiang, Li 1 ; Qian, Jie 1 ;
作者机构： 1.Yunnan Agr Univ, Coll Plant Protect, Kunming 650201, Yunnan, Peoples R China
2.Yunnan Agr Univ, State Key Lab Conservat & Utilizat Bioresources Y, Kunming, Yunnan, Peoples R China
3.Yunnan Agr Univ, Educ Minist China, Key Lab Agrobiodivers & Pest Management, Kunming, Yunnan, Peoples R China
4.Inst Sci & Technol Austria IST Austria, Klosterneuburg, Austria
5.Chinese Acad Sci, Kunming Inst Bot, Yunnan Key Lab Res & Dev Wild Plant Resources, Key Lab Econ Plants & Biotechnol, Kunming, Yunnan, Peoples R China
6.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming, Yunnan, Peoples R China
7.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Plant Resources & Sustainable Us, Mengla, Yunnan, Peoples R China
8.Shanxi Agr Univ, Shanxi Acad Agr Sci, Ind Crop Inst, Fenyang, Peoples R China
9.Yunnan Acad Agr Sci, Int Agr Res Inst, Kunming, Yunnan, Peoples R China
关键词： DNA transposable elements; indoleacetic acid; Oryza; stress
期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.228； 五年影响因子：7.791 ）
ISSN： 0140-7791
年卷期： 2021 年 44 卷 6 期
页码：
收录情况： SCI
摘要： Transposable elements exist widely throughout plant genomes and play important roles in plant evolution. Auxin is an important regulator that is traditionally associated with root development and drought stress adaptation. The DEEPER ROOTING 1 (DRO1) gene is a key component of rice drought avoidance. Here, we identified a transposon that acts as an autonomous auxin-responsive promoter and its presence at specific genome positions conveys physiological adaptations related to drought avoidance. Rice varieties with a high and auxin-mediated transcription of DRO1 in the root tip show deeper and longer root phenotypes and are thus better adapted to drought. The INDITTO2 transposon contains an auxin response element and displays auxin-responsive promoter activity; it is thus able to convey auxin regulation of transcription to genes in its proximity. In the rice Acuce, which displays DRO1-mediated drought adaptation, the INDITTO2 transposon was found to be inserted at the promoter region of the DRO1 locus. Transgenesis-based insertion of the INDITTO2 transposon into the DRO1 promoter of the non-adapted rice variety Nipponbare was sufficient to promote its drought avoidance. Our data identify an example of how transposons can act as promoters and convey hormonal regulation to nearby loci, improving plant fitness in response to different abiotic stresses.
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