Study on the Role of Phytohormones in Resistance to Watermelon Fusarium Wilt

Plants

Yong Fang¹  Jing Xiang²  Feiying Zhu²  Ruozhong Wang²  Jianhua Tong²  Kankan Yang³  Zhiwei Wang³ 

[1] Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China;Hunan Provincial Key Laboratory of Phytohormones, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China;Institute of Biotechnology, Hunan Academy of Agricultural Sciences, Changsha 410125, China;

关键词: salicylic acid;    jasmonic acid;    abscisic acid;    watermelon;    Fusarium wilt;    resistance;   

DOI  :  10.3390/plants11020156

来源: DOAJ

【 摘 要 】

Fusarium wilt disease is one of the major diseases causing a decline in watermelon yield and quality. Researches have informed that phytohormones play essential roles in regulating plants growth, development, and stress defendants. However, the molecular mechanism of salicylic acid (SA), jasmonic acid (JA), and abscisic acid (ABA) in resistance to watermelon Fusarium wilt remains unknown. In this experiment, we established the SA, JA, and ABA determination system in watermelon roots, and analyzed their roles in against watermelon Fusarium wilt compared to the resistant and susceptible varieties using transcriptome sequencing and RT-qPCR. Our results revealed that the up-regulated expression of Cla97C09G174770, Cla97C05G089520, Cla97C05G081210, Cla97C04G071000, and Cla97C10G198890 genes in resistant variety were key factors against (Fusarium oxysporum f. sp. Niveum) FON infection at 7 dpi. Additionally, there might be crosstalk between SA, JA, and ABA, caused by those differentially expressed (non-pathogen-related) NPRs, (Jasmonate-resistant) JAR, and (Pyrabactin resistance 1-like) PYLs genes, to trigger the plant immune system against FON infection. Overall, our results provide a theoretical basis for watermelon resistance breeding, in which phytohormones participate.

【 授权许可】

Unknown