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Crosstalk Between Abscisic Acid (ABA) and Brassinosteroid (BR) Signaling Pathways Is Revealed by Competing Endogenous RNA (ceRNA) Network in Brassica napus

文献类型： 外文期刊

作者： Chen, Yaqia 1 ; Wu, Jinfeng 1 ; Ma, Changrui 1 ; Zeng, Yuqing 1 ; Zhang, Dawei 1 ; Zhou, Dinggang 1 ; Zhang, Jihong 1 ; Liu, Lili 1 ; Li, Mei 2 ; Yan, Mingli 2 ;

作者机构： 1.Hunan Univ Sci & Technol, Sch Life & Hlth Sci, Xiangtan 411201, Peoples R China

2.Yuelushan Lab, Changsha 410125, Peoples R China

3.Hunan Acad Agr Sci, Hunan Res Ctr Heterosis Utilizat Rapeseed Crop Res, Changsha 410125, Peoples R China

4.Hunan Univ Sci & Technol, Hunan Key Lab Econ Crops Genet Improvement & Integ, Xiangtan 411201, Peoples R China

关键词： Brassica napus; ABA; BR; LncRNA; CeRNA

期刊名称：PLANT MOLECULAR BIOLOGY REPORTER （ 影响因子：1.4； 五年影响因子：1.8 ）

ISSN： 0735-9640

年卷期： 2025 年

页码：

收录情况： SCI

摘要： The antagonistic and synergistic effects between phytohormone abscisic acid (ABA) and brassinosteroid (BR) have been reported in plants. However, the underlying mechanisms of action in rapeseed have not been well characterized. To understand the crosstalk between ABA and BR signaling transduction pathways, we performed the whole transcriptome analysis in rapeseed. Then we further explored differentially expressed lncRNA (DE lncRNA) and differentially expressed miRNA (DE miRNA) in mock/ABA-treated and mock/BR-treated combinations. To explore the functions of lncRNAs and miRNAs, we predicted the target genes of DE lncRNAs and DE miRNAs. We found that trans regulation was the main way in which lncRNAs regulated gene expression. Compared with BR treatment, ABA treatment could regulate a wide range of gene expression at the lncRNA level. The gene ontology (GO) enrichment analyses suggested that the water deprivation pathway and auxin-related pathways were the most important pathways for non-coding RNA (ncRNA) to regulate gene expression during early seedling development under ABA or BR treatment, respectively. Interestingly, we found that the ABA and BR responsive pathways were not completely independent. Through competing endogenous RNA (ceRNA) network analyses, we uncovered that there was a local regulatory network co-expressed under ABA and BR signals. It is suggested that the auxin pathway is the key pathway in the crosstalk between ABA and BR, based on the analysis of ceRNA network and target genes. Similarly, the four transcription factor (TF) families (MYB, ERF, NAC, and bZIP) associated with plant growth and stress responses also shared similarities under ABA and BR treatment. Our findings provided insights into the molecular mechanism of phytohormone balance and environmental adaptation at the early seedling development stage in rapeseed.

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