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Integrated Genome Sequencing and Transcriptome Analysis Identifies Candidate Pathogenicity Genes from Ustilago crameri

文献类型： 外文期刊

作者： Liang, Juan 1 ; Yin, Desuo 3 ; Shu, Xinyue 1 ; Xiang, Ting 1 ; Zhang, Chao 1 ; Li, Honglian 1 ; Wang, Aijun 1 ;

作者机构： 1.Henan Agr Univ, Coll Plant Protect, Zhengzhou 450046, Peoples R China

2.Sichuan Agr Univ, Coll Agron, Chengdu 611130, Peoples R China

3.Hubei Acad Agr Sci, Food Crop Res Inst, Wuhan 430064, Peoples R China

关键词： Ustilago crameri; foxtail millet; genome; pathogenicity genes; effectors

期刊名称：JOURNAL OF FUNGI （ 影响因子：4.7； 五年影响因子：5.2 ）

ISSN：

年卷期： 2024 年 10 卷 1 期

页码：

收录情况： SCI

摘要： Ustilago crameri is a pathogenic basidiomycete fungus that causes foxtail millet kernel smut (FMKS), a devastating grain disease in most foxtail-millet-growing regions of the world. Here, we report an assembled high-quality genome sequence of U. crameri strain SCZ-6 isolated from the diseased grains of foxtail millet in Changzhi, Shanxi Province, China. The genome size is 19.55 Mb, consisting of 73 contigs (N50 = 840,209 bp) with a G + C content of 54.09%, and encoding 6576 predicted genes and 6486 genes supported by RNA-seq. Evolutionarily, U. crameri lies close to the barley smut U. hordei, and an obvious co-linearity was observed between these two smut fungi. We annotated the genome of U. crameri strain SCZ-6 using databases, identifying 1827 pathogen-host interaction (PHI)-associated genes, 1324 genes encoding fungal virulence factors, 259 CAZy-related genes, 80 genes encoding transporters, and 206 putative cytochrome P450 genes; their expression profiles at different inoculation time points were also detected. Additionally, 70 candidate pathogen effectors were identified according to their expression patterns and predicted functions. In summary, our results provide important insights into the pathogenic mechanisms of the pathogenesis-related genes of U. crameri and a robust foundation for further investigation.

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