A Comprehensive Analysis of Transcriptomics and Metabolomics Revealed Key Pathways Involved in Saccharum spontaneum Defense against Sporisorium scitamineum
文献类型： 外文期刊
作者： Hu, Xin 1 ; Luo, Zhengying 1 ; Xu, Chaohua 1 ; Wu, Zhuandi 1 ; Wu, Caiwen 1 ; Ebid, Mahmoud H. M. 2 ; Zan, Fengang 1 ; Zhao, Liping 1 ; Liu, Xinlong 1 ; Liu, Jiayong 1 ;
作者机构： 1.Natl Key Lab Biol Breeding Trop Crops, Kunming 650221, Peoples R China
2.Yunnan Acad Agr Sci, Sugarcane Res Inst, Yunnan Key Lab Sugarcane Genet Improvement, Kaiyuan 661699, Peoples R China
3.Minist Agr & Rural Affairs Yunnan, Key Lab Sugarcane Biol & Genet Breeding, Kaiyuan 661699, Peoples R China
4.Agr Res Ctr, Sugar Crops Res Inst, Giza 12619, Egypt
关键词： sugarcane smut; lignans biosynthesis; hormonesignaling; auxin; salicylic acid
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）
ISSN： 0021-8561
年卷期： 2024 年 72 卷 8 期
页码：
收录情况： SCI
摘要： Sugarcane smut, caused by Sporisorium scitamineum, poses a severe threat to sugarcane production. The genetic basis of sugarcane resistance to S. scitamineum remains elusive. A comparative transcriptomic and metabolomic study was conducted on two wild Saccharum species of S. spontaneum with contrast smut resistance. Following infection, the resistant line exhibited greater down-regulation of genes and metabolites compared to the susceptible line, indicating distinct biological processes. Lignan and lignin biosynthesis and SA signal transduction were activated in the resistant line, while flavonoid biosynthesis and auxin signal transduction were enhanced in the susceptible line. TGA2.2 and ARF14 were identified as playing positive and negative roles, respectively, in plant defense. Exogenous auxin application significantly increased the susceptibility of S. spontaneum to S. scitaminum. This study established the significant switching of defense signaling pathways in contrast-resistant S. spontaneum following S. scitamineum infection, offering a hypothetical model and candidate genes for further research into sugarcane smut disease.
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