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Improvement of plant tolerance to salt stress by GhRL192 mRNA through long-distance movement

文献类型： 外文期刊

作者： Zhang, Xinjie 1 ; Liu, Wenqian 2 ; Zhang, Tianen 1 ; Li, Jinzhu 1 ; He, Jie 1 ; Liu, Yuanyuan 1 ; Yang, Lu 2 ; Wang, Yuan 1 ; Peng, Jun 1 ; Li, Zhanshuai 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Cotton Res, State Key Lab Cotton Biobreeding & Integrated Util, Anyang 455000, Peoples R China

2.Chinese Acad Agr Sci, Natl Nanfan Res Inst Sanya, Sanya 572024, Peoples R China

3.Hainan Seed Ind Lab, Sanya 572024, Peoples R China

关键词： Grafting; Long-distance movement; mRNA; RL192; Salt stress

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.2； 五年影响因子：6.2 ）

ISSN： 0926-6690

年卷期： 2025 年 227 卷

页码：

收录情况： SCI

摘要： Salt stress poses a major restricting factor for sustainable agricultural development, limiting crop productivity and adversely affecting crop productivity. Grafting is a commonly used technique to improve the quality and stress resilience of horticultural crops. However, limited research has utilized grafting to explore the role of key mobile mRNAs in response to salt stress for molecular breeding applications. In this study, grafting systems were established between cotton and okra or tobacco. Through these systems, the 60S Ribosomal Protein L19-2 (RL192) mRNA was identified as a mobile molecule moved from cotton (rootstock) to okra (scion). Fluorescence quantification and beta-glucuronidase (GUS) staining analyses showed that GhRL192 expression was significantly induced by salt stress. Silencing GhRL192 in cotton significantly reduced salt stress tolerance, whereas overexpression of GhRL192 in tobacco or Arabidopsis improved seed germination and root development and the survival rate of seedlings under salt stress. This novel grafting strategy between horticultural and agricultural crops provides new insights and methodologies for studying mobile mRNAs that enhance crop stress resistance, yield, and quality. The identification and analysis of GhRL192 mRNA in relation to salt tolerance confirmed the feasibility of this approach, laying the groundwork for further exploration of transport mechanisms and molecular regulatory networks.

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