Specific adaptation of Ustilaginoidea virens in occupying host florets revealed by comparative and functional genomics

文献类型： 外文期刊

第一作者： Zhang, Kang

作者： Zhang, Kang;Fang, Anfei;Han, Yanqing;Yang, Jun;Xue, Minfeng;Zhou, Ligang;Li, Jianqiang;Peng, You-Liang;Sun, Wenxian;Yang, Jun;Xue, Minfeng;Peng, You-Liang;Bao, Jiandong;Zhou, Bo;Hu, Dongwei;Zhou, Bo;Sun, Xianyun;Li, Shaojie;Wen, Ming;Yao, Nan;Ma, Li-Jun;Liu, Yongfeng;Chen, Zhiyi;Zhang, Min;Huang, Fu;Luo, Chaoxi;Miao, Jiankun;Wang, Shu;Lai, Jinsheng;Xu, Jin-Rong;Hsiang, Tom

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

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收录情况： SCI

摘要： Ustilaginoidea virens (Cooke) Takah is an ascomycetous fungus that causes rice false smut, a devastating emerging disease worldwide. Here we report a 39.4 Mb draft genome sequence of U. virens that encodes 8,426 predicted genes. The genome has similar to 25% repetitive sequences that have been affected by repeat-induced point mutations. Evolutionarily, U. virens is close to the entomopathogenic Metarhizium spp., suggesting potential host jumping across kingdoms. U. virens possesses reduced gene inventories for polysaccharide degradation, nutrient uptake and secondary metabolism, which may result from adaptations to the specific floret infection and biotrophic lifestyles. Consistent with their potential roles in pathogenicity, genes for secreted proteins and secondary metabolism and the pathogen-host interaction database genes are highly enriched in the transcriptome during early infection. We further show that 18 candidate effectors can suppress plant hypersensitive responses. Together, our analyses offer new insights into molecular mechanisms of evolution, biotrophy and pathogenesis of U. virens.RI yao, nan/F-2095-2011OI yao, nan/0000-0002-2045-5462

分类号： N

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