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Strigolactones Negatively Regulate Tobacco Mosaic Virus Resistance in Nicotiana benthamiana

文献类型： 外文期刊

作者： Huang, Renyan 1 ; Bie, Shuaijun 2 ; Li, Shan 1 ; Yuan, Bin 3 ; Zhang, Li 4 ; Zhang, Zhuo 1 ; Chen, Jianbin 1 ; Ning, Weimin 1 ; Peng, Jing 1 ; Zhang, Yu 1 ; Zhang, Songbai 1 ; Liu, Yong 1 ; Zhang, Deyong 1 ;

作者机构： 1.Hunan Acad Agr Sci, Hunan Plant Protect Inst, Changsha 410125, Peoples R China

2.Hunan Agr Univ, Coll Plant Protect, Changsha 410128, Peoples R China

3.Hubei Acad Agr Sci, Inst Plant Protect & Soil Fertilizer, Wuhan 430064, Peoples R China

4.Hunan Acad Agr Sci, Nucl Agr & Space Breeding Res Inst, Changsha 410125, Peoples R China

关键词： strigolactones; tobacco mosaic virus; RNA sequencing; plant hormones; plant immunity

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.6 ）

ISSN： 1661-6596

年卷期： 2024 年 25 卷 15 期

页码：

收录情况： SCI

摘要： Strigolactones (SLs) are plant hormones that regulate diverse developmental processes and environmental responses in plants. It has been discovered that SLs play an important role in regulating plant immune resistance to pathogens but there are currently no reports on their role in the interaction between Nicotiana benthamiana and the tobacco mosaic virus (TMV). In this study, the exogenous application of SLs weakened the resistance of N. benthamiana to TMV, promoting TMV infection, whereas the exogenous application of Tis108, a SL inhibitor, resulted in the opposite effect. Virus-induced gene silencing (VIGS) inhibition of two key SL synthesis enzyme genes, NtCCD7 and NtCCD8, enhanced the resistance of N. benthamiana to TMV. Additionally, we conducted a screening of N. benthamiana related to TMV infection. TMV-infected plants treated with SLs were compared to the control by using RNA-seq. The KEGG enrichment analysis and weighted gene co-expression network analysis (WGCNA) of differentially expressed genes (DEGs) suggested that plant hormone signaling transduction may play a significant role in the SL-TMV-N. benthamiana interactions. This study reveals new functions of SLs in regulating plant immunity and provides a reference for controlling TMV diseases in production.

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