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Multi-omics analysis reveals key regulatory defense pathways and genes involved in salt tolerance of rose plants

文献类型： 外文期刊

作者： Ren, Haoran 1 ; Yang, Wenjing 1 ; Jing, Weikun 2 ; Shahid, Muhammad Owais 1 ; Liu, Yuming 1 ; Qiu, Xianhan 1 ; Choisy, Patrick 3 ; Xu, Tao 3 ; Ma, Nan 1 ; Gao, Junping 1 ; Zhou, Xiaofeng 1 ;

作者机构： 1.China Agr Univ, Dept Ornamental Hort, Beijing Key Lab Dev & Qual Control Ornamental Crop, Beijing 100193, Peoples R China

2.Yunnan Acad Agr Sci, Flower Res Inst, Kunming 650205, Peoples R China

3.LVMH Rech, 185 Ave Verdun, F-45800 St Jean De Braye, France

期刊名称：HORTICULTURE RESEARCH （ 影响因子：8.7； 五年影响因子：9.0 ）

ISSN： 2662-6810

年卷期： 2024 年 11 卷 5 期

页码：

收录情况： SCI

摘要： Salinity stress causes serious damage to crops worldwide, limiting plant production. However, the metabolic and molecular mechanisms underlying the response to salt stress in rose (Rosa spp.) remain poorly studied. We therefore performed a multi-omics investigation of Rosa hybrida cv. Jardin de Granville (JDG) and Rosa damascena Mill. (DMS) under salt stress to determine the mechanisms underlying rose adaptability to salinity stress. Salt treatment of both JDG and DMS led to the buildup of reactive oxygen species (H2O2). Palisade tissue was more severely damaged in DMS than in JDG, while the relative electrolyte permeability was lower and the soluble protein content was higher in JDG than in DMS. Metabolome profiling revealed significant alterations in phenolic acid, lipids, and flavonoid metabolite levels in JDG and DMS under salt stress. Proteome analysis identified enrichment of flavone and flavonol pathways in JDG under salt stress. RNA sequencing showed that salt stress influenced primary metabolism in DMS, whereas it substantially affected secondary metabolism in JDG. Integrating these datasets revealed that the phenylpropane pathway, especially the flavonoid pathway, is strongly enhanced in rose under salt stress. Consistent with this, weighted gene coexpression network analysis (WGCNA) identified the key regulatory gene chalcone synthase 1 (CHS1), which is important in the phenylpropane pathway. Moreover, luciferase assays indicated that the bHLH74 transcription factor binds to the CHS1 promoter to block its transcription. These results clarify the role of the phenylpropane pathway, especially flavonoid and flavonol metabolism, in the response to salt stress in rose.

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