Home CUSTOMERS Acta Virologica 2022 Acta Virologica Vol.66, No.1, p. 85 – 89, 2022

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Founded: 1957
ISSN 0001-723X
E-ISSN 1336-2305

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Acta Virologica Vol.66, No.1, p. 85 – 89, 2022

Title: Genetic diversity analysis of grapevine rupestris stem pitting-associated virus from grapevine by colony PCR-SSCP and -RFLP
Author: Guo-Jun Hu, Hong-Juan Zhu, Zun-Ping Zhang, Xu-Dong Fan, Fang Ren, Ya-Feng Dong

Abstract: We have developed methods for detecting the genetic diversity of grapevine rupestris stem pitting-associated virus (GRSPaV) based on restriction fragment length polymorphism (RFLP) and single stranded conformational polymorphism (SSCP) in the 905 nt 3' sequence. The amplicons were cloned from six grapevine cultivars, and colony polymerase chain reaction (colony PCR) using recombination bacteria was subsequently analyzed by RFLP and SSCP. Four haplotypes of SSCP and six haplotypes of Sac I RFLPs were defined. The two methods had a 40% discrepancy rate in showing the degree of diversity. All clones were sequenced and were used to construct a phylogenetic tree with seven previously reported GRSPaV sequences. In the tree, all the newly acquired sequences were divided into three clusters, I, II, and III, which corresponded to haplotypes I, II, and III of SSCP, respectively. Haplotype IV of SSCP was grouped into cluster II. A recombination analysis showed that haplotype IV has undergone a recombination event. Together, these results indicate that the SSCP assay is useful for the rapid identification of genetic diversity of GRSPaV. This is the first report of an analysis of the large fragment of GRSPaV by colony PCR-SSCP.

Keywords: grapevine; grapevine rupestris stem pitting-associated virus (GRSPaV); RFLP; SSCP; genetic diversity analysis
Year: 2022, Volume: 66, Issue: 1 Page From: 85, Page To: 89
doi:10.4149/av_2022_106
Price: 12.00 €






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