小麦锈菌中鉴定的一种新型有丝分裂病毒的全基因组序列

IF 2.5 4区医学 Q3 VIROLOGY

Archives of Virology Pub Date : 2025-03-27 DOI:10.1007/s00705-025-06272-y

Yanhui Zhang, Nuoheng Wang, Jinyang Li, Bingtao Chen, Zhensheng Kang, Pengyu Song, Wenming Zheng

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引用次数: 0

摘要

小麦叶锈病是由专性生物营养真菌小麦锈病（Puccinia triticina f. sp. tritici）引起，严重影响小麦生产。本研究从小麦锈菌HN-1株中鉴定出一种新的有丝分裂病毒，命名为“小麦锈菌有丝分裂病毒1”（PtMV1）。PtMV1的基因组由一个RNA分子组成，长度为2380 nt， a + U含量为54.7%，包含一个开放阅读框（ORF）。预计ORF编码一个假定的RNA依赖RNA聚合酶（RdRp），包含653个氨基酸，分子质量为74.77 kDa，包含6个保守基序。PtMV1的RdRp氨基酸序列与unuamitovirus的RdRp序列具有高度的相似性。系统发育分析表明，PtMV1是有丝分裂病毒科unuamitvirus属的新成员。据我们所知，这是首次在小麦锈菌中发现真菌病毒。

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Complete genome sequence of a novel mitovirus identified in the phytopathogenic fungus Puccinia triticina

Wheat leaf rust is caused by the obligate biotrophic fungus Puccinia triticina f. sp. tritici, which seriously affects wheat production. In this study, a novel mitovirus was identified in Puccinia triticina strain HN-1 and designated as "Puccinia triticina mitovirus 1" (PtMV1). The genome of PtMV1 consists of a single RNA molecule with a length of 2,380 nt and an A + U content of 54.7% that contains a single open reading frame (ORF). The ORF is predicted to encode a putative RNA-dependent RNA polymerase (RdRp) of 653 amino acids with a molecular mass of 74.77 kDa, containing six conserved motifs. The RdRp amino acid sequence of PtMV1 has a high degree of sequence similarity to the RdRps of unuamitoviruses. Phylogenetic analysis indicated that PtMV1 is a new member of the genus Unuamitovirus within the family Mitoviridae. To our knowledge, this is the first report of a fungal virus in Puccinia triticina.

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来源期刊

Archives of Virology 医学-病毒学

CiteScore

5.10

自引率

7.40%

发文量

324

审稿时长

4.5 months

期刊介绍： Archives of Virology publishes original contributions from all branches of research on viruses, virus-like agents, and virus infections of humans, animals, plants, insects, and bacteria. Coverage spans a broad spectrum of topics, from descriptions of newly discovered viruses, to studies of virus structure, composition, and genetics, to studies of virus interactions with host cells, organisms and populations. Studies employ molecular biologic, molecular genetics, and current immunologic and epidemiologic approaches. Contents include studies on the molecular pathogenesis, pathophysiology, and genetics of virus infections in individual hosts, and studies on the molecular epidemiology of virus infections in populations. Also included are studies involving applied research such as diagnostic technology development, monoclonal antibody panel development, vaccine development, and antiviral drug development.Archives of Virology wishes to publish obituaries of recently deceased well-known virologists and leading figures in virology.