Preprint Article Version 1 This version is not peer-reviewed

Complete Genome Sequence of a Distinct Isolate of Cassava common mosaic virus (CsCMV) Infecting Cassava in Hainan, China

Version 1 : Received: 19 March 2020 / Approved: 23 March 2020 / Online: 23 March 2020 (05:46:35 CET)

How to cite: Yu, N.; Yang, Y.; Li, J.; Li, W.; Liu, Z. Complete Genome Sequence of a Distinct Isolate of Cassava common mosaic virus (CsCMV) Infecting Cassava in Hainan, China. Preprints 2020, 2020030336 (doi: 10.20944/preprints202003.0336.v1). Yu, N.; Yang, Y.; Li, J.; Li, W.; Liu, Z. Complete Genome Sequence of a Distinct Isolate of Cassava common mosaic virus (CsCMV) Infecting Cassava in Hainan, China. Preprints 2020, 2020030336 (doi: 10.20944/preprints202003.0336.v1).

Abstract

The complete genomic sequence of a Cassava common mosaic virus Linggao isolate (CsCMV-LG) was determined from cassava (Manihot esculenta Crantz) with mild leafy mosaic symptom to no symptom in China. Excluding the poly(A) tail, the CsCMV-LG genome (GenBank accession No. MT038420) is 6374 nucleotides (nts) in length, with five major open reading frames encoding a 1450-amino acids (aa) RNA-dependent RNA polymerase (RdRp), three triple gene block (TGB) proteins (231-aa, 110-aa and 95-aa), and a 229-aa coat protein (CP). Phylogenetic analysis indicated that the complete genome of the CsCMV-LG is closely related to that of CsCMV-Brazilian which has been assigned to the genus Potexvirus, but the sequence identity shared only 88.0%. Notable, the mild CsCMV-LG isolate can also infect Nicotiana benthamiana in laboratory through rub inoculation causing mild vein yellowing at 15-day post inoculation. This is the first full-length genome sequence of a distinct isolate of Cassava common mosaic virus (CsCMV) infecting cassava in Hainan, China.

Subject Areas

Manihot esculenta Crantz; potexvirus; Cassava common mosaic virus; genomics

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