数字农科院2.0

Physiological, biochemical, and multi-omics analyses reveal the mechanism underlying strigolactone-mediated waterlogging response in rapeseed

文献类型： 外文期刊

作者： Ximin Zhi;Xiaohua Bian;Yuexia Zhang;Yuxi Li;Aqarahim Wasim;Guangsheng Zhou;Chen Chen;Ni Ma

作者机构：

关键词： Metabolome;Physio-chemical characteristics;Rapeseed;Strigolactones;Transcriptome;Waterlogging stress

期刊名称： Industrial Crops and Products

ISSN： 0926-6690

年卷期： 2026 年 240 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Global climate change has caused an increasing frequency of extreme rainfall events, which aggravates the waterlogging risk to pose serious threats to the production of rapeseed. Strigolactones (SLs) have been demonstrated to enhance crop stress resistance by modulating physiochemical processes and gene expression. However, little is known about the molecular mechanisms through which SLs alleviate waterlogging damage in rapeseed. Here, we comprehensively analyzed the regulatory effects of SLs on the phenotypic and physiochemical characteristics of waterlogged rapeseed and the underlying molecular mechanisms. The results indicated that waterlogging substantially inhibited the aboveground growth and root development, as well as reduced the net photosynthetic rate, stomatal conductance, mesophyll and spongy tissue thickness, APX activity, and N, P, and K contents in seedlings. Conversely, SLs activated the glutathione metabolism and phenylpropanoid biosynthesis pathways, upregulated GPX, GSH, and 4CL genes, increased amino acids and secondary metabolites, enhanced antioxidant enzyme system and absorption efficiency of N, P, and K elements, promoted photosynthesis and biomass accumulation, thereby effectively alleviating waterlogging damage. At the flowering stage, SLs activated alanine, aspartate, and glutamate metabolism and phenylpropanoid biosynthesis pathways, regulated the GLN1, ASP and PAL genes, increased amino acid and phenolic compounds, which together effectively mitigated the waterlogging-induced yield and quality loss. Overall, this study demonstrates that SLs can effectively mitigate waterlogging damage to the phenotypic traits, physiochemical indicators, transcriptomics, and metabolomics in rapeseed. The findings provide practical guidance for improving waterlogging tolerance in cultivation management, and also an important theoretical basis for genetic improvement in rapeseed.

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