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| 两个马铃薯Y病毒不同株系分离物在三种寄主上的致病性分析 | |
| 引用本文： | 刘晴,姜新,刘春菊,郭永良,闫志勇,耿超,王杰,徐蓬军,李向东,田延平.两个马铃薯Y病毒不同株系分离物在三种寄主上的致病性分析[J].植物病理学报,2023,53(1):13-21. |
| 作者姓名： | 刘晴 姜新 刘春菊 郭永良 闫志勇 耿超 王杰 徐蓬军 李向东 田延平 |
| 作者单位： | 山东农业大学植物保护学院植物病理学系,泰安 271018; 山东省农业微生物重点实验室,泰安 271018; 山东潍坊烟草有限公司,潍坊 261031; 中国农业科学院烟草研究所,青岛 266101 |
| 基金项目： | 国家自然科学基金(31871933、31501612);山东省烟草公司项目(KN275);山东潍坊烟草有限公司(2021-47) |
| 摘 要： | 马铃薯是重要的粮食和经济作物。马铃薯Y病毒(potato virus Y,PVY)是危害马铃薯安全生产的重要病毒。近年来，危害我国马铃薯的PVY株系组成发生了显著变化。PVY重组型株系尤其是PVYNTN-NW SYRI和SYRII型成为优势株系，但与传统株系分离物相比，优势株系分离物在不同寄主上的侵染性及其致病力还不清楚。本研究分析了PVYN株系代表性分离物PVYN605和PVYNTN-NWSYRI型分离物GZ在本氏烟、普通烟和辣椒上的侵染性，比较了二者在本氏烟和普通烟上的致病力。结果表明，PVYN605和PVYNTN-NWSYRI-GZ分离物均能侵染本氏烟和普通烟，并在普通烟上引起叶脉坏死；PVYN605不能系统侵染辣椒品种‘特大牛角王’,而PVYNTN-NWSYRI-GZ可系统侵染辣椒品种特大牛角王。PVYNTN-NWSYRI-GZ在本氏烟细胞间的移动速度明显慢于PVYN |
| 关 键 词： | 马铃薯Y病毒 致病性 致病力 株系组 重组 |
| 收稿时间： | 2021-12-21 |
Pathogenicity and virulence of two different PVY isolates associated with three different hosts |
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| LIU Qing,JIANG Xin,LIU Chunju,GUO Yongliang,YAN Zhiyong,GENG Chao,WANG Jie,XU Pengjun,LI Xiangdong,TIAN Yanping.Pathogenicity and virulence of two different PVY isolates associated with three different hosts[J].Acta Phytopathologica Sinica,2023,53(1):13-21. | |
| Authors: | LIU Qing JIANG Xin LIU Chunju GUO Yongliang YAN Zhiyong GENG Chao WANG Jie XU Pengjun LI Xiangdong TIAN Yanping |
| Institution: | Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Tai’an 271018, China; Shandong Provincial Key Laboratory of Agricultural Microbiology, Tai’an 271018, China; Shandong Weifang Tobacco Company, Weifang 261031, China; Tobacco Research Institute of CAAS, Qingdao 266101, China |
| Abstract: | Potato is one of the most important food and economic crops. Potato virus Y is an economically important virus affecting potato production. Recent studies have shown that the composition of PVY strain groups has changed. Recombinant PVY isolates including PVYNTN-NWSYRI and PVYNTN-NWSYRII have become the predominant strains. However, their pathogenicity and virulence were unclear compared with previous PVYN strain isolates. In this study, we compared the infectivity of isolates PVYN605 and PVYNTN-NWSYRI-GZ (originally isolated from tobacco plant) on Nicotiana benthamiana, N. tabacum and Capsicum annuum (Tedaniujiaowang) plants and their virulence on the plants of N. benthamiana and N. tabacum. Results showed that both isolates PVYN605 and PVYNTN-NWSYRI-GZ could infect N. benthamiana and N. tabacum systemically and induced vein necrosis in N. tabacum. Isolate PVYNTN-NWSYRI-GZ, but not PVYN605, could infect C. annuum (Tedaniujiao-wang) systemically. The cell-to-cell movement of PVYNTN-NWSYRI-GZ is slower than that of PVYN605. The reduction in the height of N. benthamiana plants caused by PVYNTN-NWSYRI-GZ was more severe than that by PVYN605. At 11 days post agroinfiltration, the accumulation level of PVYNTN-NWSYRI-GZ in N. benthamiana plants was lower than that of PVYN605. The results obtained in this study will help us understand the evolution of the PVY strains and design a new control strategy for PVY. |
| Keywords: | Potato virus Y pathogenicity virulence strain group recombination |
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