文献类型： 外文期刊
作者： Zhao, Fumei 1 ; Wang, Lei 1 ; Zhang, Zhenchen 1 ; Qiao, Qi 1 ; Qin, Yanhong 1 ; Wang, Yongjing 1 ; Wang, Shuang 1 ; Tian, 1 ;
作者机构： 1.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou 450002, Peoples R China
2.Henan Key Lab Crop Pest Control, Zhengzhou 450002, Peoples R China
3.North China Minist Agr, IPM Key Lab Southern Part, Zhengzhou 450002, Peoples R China
关键词： SPPV; Badnavirus; Seed transmission; Sweet potato; PCR detection
期刊名称：JOURNAL OF GENERAL PLANT PATHOLOGY （ 影响因子：1.449； 五年影响因子：1.416 ）
ISSN： 1345-2630
年卷期： 2020 年 86 卷 3 期
页码：
收录情况： SCI
摘要： Sweet potato pakakuy virus (SPPV), a member of the species Sweet potato pakakuy virus (genus Badnavirus, family Caulimoviridae), was recently identified as a sweet potato-infecting virus; thus, relatively little is known about the virus and disease epidemiology. In a study on transmission of SPPV by seeds, polymerase chain reaction (PCR) analyses with SPPV-specific primers were used to monitor two strains of SPPV, sweet potato badnavirus A (SPBV-A, synonym SPPV-A) and sweet potato badnavirus B (SPBV-B, synonym SPPV-B), in seeds and seedlings produced from SPPV-infected plants of two sweet potato cultivars (Yu-8 and Xu25-2). SPPV was detected at high frequency in seed tissues including intact seed, embryo, endosperm, and seed coat. All seeds derived from infected sweet potato plants gave rise to infected seedlings. Meanwhile, bioinformatics analyses of small RNAs in SPPV-positive seedlings, as verified by PCR, revealed key features of SPPV, such as coat protein, reverse transcriptase, and RNaseH domains, further confirming the seed transmission of SPPV. That SPPV can be transmitted via seeds at a high transmission rate in sweet potato has important implications for sweet potato breeding and establishment of appropriate strategies for SPPV control.
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