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Editing and genome-wide analysis upstream open reading frames contributes to enhancing salt tolerance in tomato

文献类型： 外文期刊

作者： Jia, Chunping 1 ; Wang, Juan 1 ; Guo, Bin 1 ; Yang, Tao 1 ; Yang, Haitao 1 ; Wang, Baike 1 ; Yu, Qinghui 1 ;

作者机构： 1.Xinjiang Acad Agr Sci, Inst Hort Crops, Key Lab Genome Res & Genet Improvement Xinjiang Ch, Urumqi, Peoples R China

2.Xinjiang Univ, Coll Life Sci & Technol, Urumqi, Peoples R China

3.Xinjiang Agr Univ, Coll Comp & Informat Engn, Urumqi, Peoples R China

关键词： uORFs; gene editing; Ribo-seq; translational regulation; salt stress

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：10.1； 五年影响因子：11.6 ）

ISSN： 1467-7644

年卷期： 2024 年

页码：

收录情况： SCI

摘要： The salinization of soil constitutes a substantial hindrance to the advancement of sustainable agriculture. Our research seeks to elucidate the role of a Rab GTPase-activating protein (RabGAP) family member, SlRabGAP22, in salt tolerance and its translational regulation under salt stress in tomatoes, employing gene-editing techniques and ribosome profiling methodologies. Findings demonstrate that SlRabGAP22 acts as a positive regulator of tomato salt tolerance, with four predicted upstream open reading frames (uORFs) classified into three categories. Functional uORFs were found to be negative regulation. Editing these uORFs along with altering their classifications and characteristics mitigated the inhibitory effects on primary ORFs and fine-tuned gene expression. Enhanced tomato salt tolerance was attributed to improved scavenging of reactive oxygen species, reduced toxicity Na+, and diminished osmotic stress effects. Furthermore, we conducted genome-wide analysis of ORFs to lay the foundation for further research on uORFs in tomatoes. In summary, our findings offer novel perspectives and important data for the enhancement of genetic traits via uORF-based strategies and translational regulation against the backdrop of salt stress.

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