文献类型： 外文期刊
作者： Zhu, Hongjing 1 ; Okiyama, Takeshi 3 ; Mishina, Kohei 1 ; Kikuchi, Shinji 2 ; Sassa, Hidenori 2 ; Komatsuda, Takao 4 ; Kato, Tsuneo 3 ; Oono, Youko 1 ;
作者机构： 1.Natl Agr & Food Res Org NARO, Inst Crop Sci, 2-1-2 Kannondai, Tsukuba 3058602, Japan
2.Chiba Univ, Grad Sch Hort, Matsudo 648, Matsudo 2718510, Japan
3.Tochigi Prefectural Agr Expt Stn, Kawaraya Cho 1080, Utsunomiya 3200002, Japan
4.Shandong Acad Agr Sci SAAS, Crop Res Inst, 202 Gongyebei Rd, Jinan 250100, Peoples R China
关键词： Barley yellow mosaic virus; barley; rym3; virus resistance; pathotype
期刊名称：GENES （ 影响因子：2.8； 五年影响因子：3.3 ）
ISSN：
年卷期： 2024 年 15 卷 6 期
页码：
收录情况： SCI
摘要： In early spring 2018, significant mosaic disease symptoms were observed for the first time on barley leaves (Hordeum vulgare L., cv. New Sachiho Golden) in Takanezawa, Tochigi Prefecture, Japan. This cultivar carries the resistance gene rym3 (rym; resistance to yellow mosaic). Through RNA-seq analysis, Barley yellow mosaic virus (BaYMV-Takanezawa) was identified in the roots of all five plants (T01-T05) in the field. Phylogenetic analysis of RNA1, encompassing known BaYMV pathotypes I through V, revealed that it shares the same origin as isolate pathotype IV (BaYMV-Ohtawara pathotype). However, RNA2 analysis of isolates revealed the simultaneous presence of two distinct BaYMV isolates, BaYMV-Takanezawa-T01 (DRR552862, closely related to pathotype IV) and BaYMV-Takanezawa-T02 (DRR552863, closely related to pathotype III). The amino acid sequences of the BaYMV-Takanezawa isolates displayed variations, particularly in the VPg and N-terminal region of CP, containing mutations not found in other domains of the virus genome. Changes in the CI (RNA1 amino acid residue 459) and CP (RNA1 amino acid residue 2138) proteins correlated with pathogenicity. These findings underscore the importance of monitoring and understanding the genetic diversity of BaYMV for effective disease management strategies in crop breeding.
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