Malvastrum yellow vein virus, a new Begomovirus species associated with satellite DNA molecule
文献类型： 外文期刊
作者： Zhou, XP 1 ; Xie, Y 2 ; Peng, Y 2 ; Zhang, ZK 2 ;
作者机构： 1.Zhejiang Univ, Inst Biotechnol, Hangzhou 310029, Peoples R China
2.Zhejiang Univ, Inst Biotechnol, Hangzhou 310029, Peoples R China; Yunnan Acad Agr Sci, Yunnan Biotechnol Res Inst, Kunming 650223, Peoples R China
关键词： Malvastrum yellow vein virus;Malvastrum coromandelianum;Begomovirua;DNA-A;DNA beta
期刊名称：CHINESE SCIENCE BULLETIN （ 影响因子：1.649； 五年影响因子：1.738 ）
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收录情况： SCI
摘要： Virus isolate Y47 was obtained from Malvastrum coromandelianum showing yellow vein symptom in Honghe, Yunnan Province. The complete nucleotide sequence of DNA-A was determined, it contains 2731 nucleotides, having typical genomic organization of a begomovirus, encoding 6 ORFs with 2 ORFs [AV1(CP) and AV2] in virionsense DNA and 4 ORFs (AC1-AC4) in complementary-sense DNA. Comparisons show that the total DNA-A of Y47 has the highest sequence identity (77 percent) with that of Okra yellow vein mosaicvirus-[201] (AJ002451), while less than 76 percent identities are found when compared with other begomoviruses. The molecular data show that virus isolate Y47 is a distinct begomovirus species, for which the name Malvastrum yellow vein virus is proposed. Satellite DNA molecule (Y47 beta) was found to he associated with Y47 using the primers (beta01 and beta02) specific for DNA beta. Y47 beta consists of 1348 nucleotides, with a functional ORF (C1) in complementary-sense DNA. Y47 beta has 62-67 percentsequence identity with DNA beta molecule associated with Cotton leaf curl Multan virus or Cotton leaf curl Rajasthan virus, while lower than 46 percent sequence identities are found when compared with other reported DNA beta molecules. Relationship dendrograms show that DNA beta molecules are co-evolved with their help begomoviruses.
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