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A Novel Recombined Potato virus Y Isolate in China

文献类型： 外文期刊

作者： Han, Shuxin 1 ; Gao, Yanling 1 ; Fan, Guoquan 2 ; Zhang, Wei 1 ; Qiu, Cailing 2 ; Zhang, Shu 2 ; Bai, Yanju 2 ; Zhang, Ju 1 ;

作者机构： 1.Northeast Agr Univ, Coll Agr, Harbin 150030, Heilongjiang, Peoples R China

2.Heilongjiang Acad Agr Sci, Virus Free Seeding Res Inst, Harbin 150086, Heilongjiang, Peoples R China

3.Norwegian Inst Biecon Res, N-1432 As, Norway

关键词： PVY;recombinant;genome sequence;phylogeny

期刊名称：PLANT PATHOLOGY JOURNAL （ 影响因子：1.795； 五年影响因子：2.314 ）

ISSN： 1598-2254

年卷期： 2017 年 33 卷 4 期

页码：

收录情况： SCI

摘要： This study reports the findings of a distinct Potato virus Y (PVY) isolate found in Northeast China. One hundred and ten samples (leaves and tubers) were collected from potato plants showing mosaic symptoms around the city of Harbin in Heilongjiang province of China. The collected tubers were planted and let to grow in a greenhouse. New potato plants generated from these tubers showed similar symptoms, except for one plant. Subsequent serological analyses revealed PVY as the causing agent of the disease. A novel PVY isolate (referred to as HLJ-C-44 in this study) was isolated from this sample showing unique mild mosaic and crisped leaf margin symptoms. The complete genome of this isolate was analyzed and determined. The results showed that HLJ-C-44 is a typical PVY isolate. Phylogenetic analysis indicated that this isolate belongs to the N-Wi strain group of PVY recombinants (PVYN-wi) and also shared the highest overall sequence identity (nucleotide and amino acid) with other members of this strain group. However, recombination analysis of isolate HLJ-C-44 revealed a recombination pattern that differed from that of other PITYN-wi isolates. Moreover, biological assays in four different potato cultivars and in Nicotiana tabacum also revealed a different phenotypic response than that of a typical PVYN-Wi isolate. This data, combined, suggest that IILJ-C-44 is a novel PVY recombinant with distinct biological properties.

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