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李属坏死环斑病毒(Prunus necrotic ringspot virus,PNRSV)属雀麦花叶病毒科(Bromoviridae) 等轴不稳环斑病毒属(Ilarvirus),是我国二类检疫 性有害生物。PNRSV主要危害李属和蔷薇属植 物。如,樱桃、桃、李、月季等。春季感染PNRSV 的樱桃早期幼叶会出现深棕色坏死斑和线纹,叶片 展开期坏死斑脱落造成穿孔症状。受PNRSV危 害后,果树树势减弱,产量降低,甚至死树。我国学 者调查陕西、辽宁和山东等省的果树病害时发现并 报道了该病毒。
Prunus necrotic ringspot virus (PNRSV) belongs to the genus Bromoviridae, which is the second quarantine pest in China. PNRSV major hazards Prunus and rose. Such as cherry, peach, plum, rose and so on. Early brown leaves infected with PNRSV in spring will show dark brown necrotic spots and lines, and necrotic spots will fall off during leaf deprivation to cause perforation. After being damaged by PNRSV, fruit trees weaken, production decreases, and even dead trees. Our scholars discovered and reported the virus when they investigated the diseases of fruit trees in Shaanxi, Liaoning and Shandong provinces.