Four closely related endornaviruses each with a low incidence in the phytopathogenic fungi Exserohilum turcicum or Bipolaris maydis
文献类型: 外文期刊
第一作者: Wang, Peng
作者: Wang, Peng;Zheng, Yun;Pan, Xin;Gao, Zhongnan;Zhou, Xuan;Deng, Qingchao;Fang, Shouguo;Wang, Haoran;Zhang, Songbai;Pan, Shouhui;Dai, Fei;Li, Zhanbiao
作者机构:
关键词: Endornavirus; Mycovirus; Exserohilum turcicum; Bipolaris maydis; Vegetative incompatibility
期刊名称:VIRUS RESEARCH ( 影响因子:5.0; 五年影响因子:4.0 )
ISSN: 0168-1702
年卷期: 2024 年 339 卷
页码:
收录情况: SCI
摘要: Endornaviruses are known to occur widely in plants, fungi, and oomycetes, but our understanding of their di-versity and distribution is limited. In this study, we report the discovery of four endornaviruses tentatively named Setosphaeria turcica endornavirus 1 (StEV1), Setosphaeria turcica endornavirus 2 (StEV2), Bipolaris maydis endornavirus 1 (BmEV1), and Bipolaris maydis endornavirus 2 (BmEV2). StEV1 and StEV2 infect Exserohilum turcicum, while BmEV1 and BmEV2 infect Bipolaris maydis. The four viruses encode a polyprotein with less than 40 % amino acid sequence identity to other known endornaviruses, indicating that they are novel, previously undescribed endornaviruses. However, StEV1 and BmEV1 share a sequence identity of 78 % at the full-genome level and 87 % at the polyprotein level, suggesting that they may belong to the same species. Our study also found that each of the four endornaviruses has an incidence of approximately 3.5 % to 5.5 % in E. turcicum or B. maydis. Interestingly, BmEV1 and BmEV2 were found to be unable to transmit between hosts of different vegetative incompatibility groups, which may explain their low incidence.
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