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

被引：1

作者：

Zhang, Yanhui ^{[1
]}

Wang, Nuoheng ^{[1
]}

Li, Jinyang ^{[1
]}

Chen, Bingtao ^{[1
]}

Kang, Zhensheng ^{[2
]}

Song, Pengyu ^{[1
]}

Zheng, Wenming ^{[1
]}

机构：

[1] Henan Agr Univ, Coll Life Sci, State Key Lab Wheat & Maize Crop Sci, Zhengzhou 450046, Henan, Peoples R China

[2] Northwest A&F Univ, Coll Plant Protect, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China

来源：

ARCHIVES OF VIROLOGY | 2025年 / 170卷 / 05期

基金：

中国国家自然科学基金;

关键词：

STRIIFORMIS; RUST; RNA;

D O I：

10.1007/s00705-025-06272-y

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

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.

引用

页数：6