CAJ | 학술논문

马铃薯A病毒(Potato virus A, PVA)是马铃薯生产上危害较严重的病毒之一. PVA已知的寄主为茄科植物,在马铃薯上引起的症状与气候条件、马铃薯品种和PVA的株系有关. PVA基因组与其他PVY属已知序列的病毒核苷酸序列同源性在53%~58%之间,编码的11种蛋白在基因组复制、蛋白加工、蚜虫传毒、系统移动以及与寄主组分互作等方面具有各自的功能.马铃薯对PVA的抗性分为过敏抗性(HR)和极端抗性(ER)两类,植物对PVA的抗性机制主要分为显性基因介导的抗性、隐性基因介导的抗性、 RNA介导的抗性. PVA的致病机理、 PVA抗性基因挖掘和抗PVA转基因新策略将是今后的研究重点.
마령서A병독(Potato virus A, PVA)시마령서생산상위해교엄중적병독지일. PVA이지적기주위가과식물,재마령서상인기적증상여기후조건、마령서품충화PVA적주계유관. PVA기인조여기타PVY속이지서렬적병독핵감산서렬동원성재53%~58%지간,편마적11충단백재기인조복제、단백가공、아충전독、계통이동이급여기주조분호작등방면구유각자적공능.마령서대PVA적항성분위과민항성(HR)화겁단항성(ER)량류,식물대PVA적항성궤제주요분위현성기인개도적항성、은성기인개도적항성、 RNA개도적항성. PVA적치병궤리、 PVA항성기인알굴화항PVA전기인신책략장시금후적연구중점.
@@@@Potato virus A (PVA) causes serious viral disease in potato production. The host range of PVA is restricted to Solanaceae, and symptoms caused by PVA on potato depend on climatic conditions, potato cultivar and PVA strain. Overal nucleotide sequence of PVA identity compared with other completely sequenced potyvirus genomes is between 53%and 58%. The PVA genome is expressed as a single polyprotein that is subsequently cleaved to 11 mature proteins functioned in DNA replication, protein processing, aphid transmission, systemic movement and interaction with host component. Potato defense against viruses is mainly highly devided into hypersensitive response (HR) and extreme resistance (ER), and the resistance is mediated by dominant gene, recessive gene or RNA. The pathogenic mechanism, resistance gene mining and new transgenic strategies against PVA would be the focus of the future research.