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Dynamic m6A RNA methylation correlates with ethylene-induced petal senescence and may modulate antioxidant and metabolic pathways in carnation (Dianthus caryophyllus L.)

文献类型： 外文期刊

作者： Wang, Hongya 1 ; Zhao, Chuansen 1 ; Pan, Zekang 1 ; Li, Xilin 1 ; Wang, Siqi 1 ; Yuan, Xinyi 1 ; Zhu, Chunlin 1 ; Sun, Zheng 1 ; Wang, Min 1 ; Feng, Shan 1 ; Li, Zeqing 5 ; Zhong, Linlin 1 ; Cheng, Yunjiang 1 ; Bao, Manzhu 1 ; Zhang, Fan 1 ;

作者机构： 1.Huazhong Agr Univ, Natl Key Lab Germplasm Innovat & Utilizat Hort Cro, Wuhan 430070, Peoples R China

2.Hubei Hongshan Lab, Wuhan 430070, Peoples R China

3.Huazhong Agr Univ, Natl R&D Ctr Citrus Postharvest Technol, Wuhan 430070, Peoples R China

4.Huazhong Agr Univ, Joint Int Res Lab Germplasm Innovat & Utilizat Hor, Wuhan 430070, Peoples R China

5.IGENEBOOK Biotechnol Co Ltd, Wuhan 430206, Peoples R China

6.Huazhong Agr Univ, Inst Flowers Res, Wuhan 430070, Peoples R China

7.Huazhong Agr Univ, Minist Agr & Rural Affairs, Key Lab Huazhong Urban Agr, Wuhan 430070, Peoples R China

8.Yunnan Seed Lab, Kunming 650200, Peoples R China

9.Yunnan Acad Agr Sci, Floriculture Res Inst, Natl Engn Res Ctr Ornamental Hort, Key Lab Flower Breeding Yunnan Prov, Kunming 650200, Peoples R China

关键词： ATP-citrate lyase; carnation; ethylene; m(6)A; oxidative stress; petal senescence

期刊名称：PLANT JOURNAL （ 影响因子：5.7； 五年影响因子：7.0 ）

ISSN： 0960-7412

年卷期： 2025 年 123 卷 2 期

页码：

收录情况： SCI

摘要： Petal senescence is a critical stage in the life cycle of plants and involves a complex regulatory network, in which ethylene is one of the important regulatory factors. As a key RNA modification, the role of m6A methylation in various physiological processes in plants has been widely recognized, but its specific function in petal senescence has not been thoroughly investigated. In this study, LC-MS/MS analysis showed that ethylene treatment significantly reduced the level of m6A in carnation (Dianthus caryophyllus L.) petals. MeRIP-seq analysis further showed that ethylene treatment resulted in a change in the distribution pattern of m6A modification, especially an increase in enrichment near the stop codon region. Further studies identified four aging-related genes, including antioxidant genes (DcGST10 and DcGPX8) and TCA cycle genes (DcACLA and DcACLB). The m6A levels of these genes were positively correlated with their mRNA expression levels. Furthermore, we found that silencing these genes significantly accelerates carnation petal senescence and increases oxidative stress, which highlights the key role of m6A modification in modulating antioxidant and metabolic pathways. This study confirms the dynamic changes and potential mechanisms of m6A modification during carnation petal senescence, providing new insights into the epigenetic regulatory network during plant senescence.

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