数字农科院2.0

Identification and analysis of long non-coding RNAs response to quinclorac stress in tobacco

文献类型： 外文期刊

作者： Li, Zefeng;Lv, Jing;Wang, Zhong;Li, Feng;Wang, Shuaibin;He, Xinxi;Wu, Mingzhu;Dai, Changbo;Xu, Xin;Xie, Xiaodong;Sun, Yuhe;Yang, Jun;Luo, Zhaopeng;Gao, Junping

作者机构：

关键词： LncRNA;Auxinic herbicide;Quinclorac stress;Nicotiana tabacum

期刊名称： GENOMICS

ISSN： 0888-7543

年卷期： 2025 年 117 卷 6 期

页码：

收录情况： SCIE（2025版）

摘要： Quinclorac is a widely used herbicide known to inhibit tobacco growth, yet its molecular impact remains poorly understood. To elucidate tobacco's response mechanisms, we profiled long non-coding RNAs (lncRNAs) under quinclorac stress. A total of 1867 lncRNAs were identified, including 1337 novel transcripts. Differential expression analysis revealed 672 lncRNAs significantly altered by quinclorac treatment. Co-expression clustering grouped these into 20 distinct expression profiles. Target prediction indicated that 415 lncRNAs potentially regulate mRNAs via cis- and/or trans-acting interactions. Functional enrichment of their targets highlighted overrepresentation of photosynthesis and stress-response pathways. Moreover, we constructed regulatory networks linking lncRNAs to quinclorac-resistance-associated genes involved in hormone biosynthesis and signaling, molecular transport, and xenobiotic metabolism. These findings uncover a repertoire of lncRNAs responsive to quinclorac and suggest their roles in mediating herbicide tolerance in tobacco.

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