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马铃薯Y病毒研究进展 被引量:17

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摘要 马铃薯Y病毒(Potato virus Y,PVY)是危害马铃薯的重要病毒之一,在全球广为传播,并造成了严重经济损失。因此深入研究PVY及其与马铃薯的相互作用有助于控制病毒,减轻危害。根据初始寄主植物,PVY可分为以马铃薯为初始寄主的株系群体和以非马铃薯物种为初始寄主的株系群体。以马铃薯为初始寄主的株系群体,依据指示寄主植物(马铃薯品种,烟草)反应,进一步分为PVYO、PVYN、PVYNTN及PVYC等几种类型。依据血清学反应,PVY分成PVYO/C血清型和PVYN血清型。依据基因序列和基因组学,PVY分为PVYO,PVYN,PVYC及一系列PVYO/PVYN重组型如PVYNTN和PVYN:O。症状是寄主与病毒之间复杂的相互作用的结果。一些病毒蛋白和寄主蛋白的相互作用已被证实或逐渐认识到。证据显示HC-Pro起到转录后基因沉默抑制子的作用,从而提高病毒复制能力。马铃薯对PVY的抗性分为极端抗性和高敏抗性两类,多个极端抗性基因(即Ry基因)和过敏抗性基因(即Ny基因)被定位在第9,11和12号染色体上。PVY与植物的分子互作和抗PVY基因资源挖掘与利用将是今后几年的研究重点。
出处 《中国马铃薯》 2009年第5期293-300,共8页 Chinese Potato Journal
基金 中国加拿大国际科技合作项目(2008DFA31090) 加拿大农业部(AAFC)研究课题(#71) 中国教育部和加拿大农业部联合培养博士生项目(MOE-AAFC-2008)
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参考文献83

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二级参考文献24

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