Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Department of Agriculture, Northeast Agricultural University, Harbin 150030, China.
Institute of Crop Science, Chinese Academy of Agricultural Sciences, Zhongguancun South Street, Haidian District, Beijing 100081, China.
Genes (Basel). 2022 Mar 2;13(3):456. doi: 10.3390/genes13030456.
Rice black-streaked dwarf virus (RBSDV) causes maize rough dwarf disease (MRDD), which is a viral disease that significantly affects maize yields worldwide. Plants tolerate stress through transcriptional reprogramming at the alternative splicing (AS), transcriptional, and fusion gene (FG) levels. However, it is unclear whether and how AS and FG interfere with transcriptional reprogramming in MRDD. In this study, we performed global profiling of AS and FG on maize response to RBSDV and compared it with transcriptional changes. There are approximately 1.43 to 2.25 AS events per gene in maize infected with RBSDV. was only detected in four AS modes (A3SS, A5SS, RI, and SE), whereas showed downregulated expression and four AS events. A total of 106 and 176 FGs were detected at two time points, respectively, including six differentially expressed genes and five differentially spliced genes. The gene was the only FG that occurred at two time points and was involved in two FG events. Among these, 104 GOs were enriched, indicating that nodulin-, disease resistance-, and chloroplastic-related genes respond to RBSDV stress in maize. These results provide new insights into the mechanisms underlying post-transcriptional and transcriptional regulation of maize response to RBSDV stress.
水稻黑条矮缩病毒(RBSDV)引起玉米粗缩病(MRDD),这是一种严重影响全球玉米产量的病毒性疾病。植物通过在替代剪接(AS)、转录和融合基因(FG)水平上的转录重编程来耐受应激。然而,尚不清楚 AS 和 FG 是否以及如何干扰 MRDD 中的转录重编程。在本研究中,我们对玉米感染 RBSDV 后的 AS 和 FG 进行了全局分析,并将其与转录变化进行了比较。在感染 RBSDV 的玉米中,每个基因大约有 1.43 到 2.25 个 AS 事件。 仅在四种 AS 模式(A3SS、A5SS、RI 和 SE)中检测到,而 表现出下调表达和四个 AS 事件。在两个时间点分别检测到 106 和 176 个 FG,包括六个差异表达基因和五个差异剪接基因。基因 是仅在两个时间点发生的唯一 FG,涉及两个 FG 事件。其中,104 个 GO 被富集,表明 nodulin、抗病性和质体相关基因在玉米对 RBSDV 胁迫的响应中发挥作用。这些结果为玉米对 RBSDV 胁迫的转录后和转录调控机制提供了新的见解。