Analysis of the triple gene block sequence in an important melon pathogen, Melon yellowing-associated virus

Abstract

A novel viral disease of melon, caused by Melon yellowing-associated virus (MYaV), has become one of the most serious problems for melon production in Brazil. Despite its importance, little is known about the genome sequence of the virus. In this study, the triple gene block genomic region including the 3 0 -end region of an isolate of MYaV was elucidated (ca. 3.1 kb). Sweet potato chlorotic fleck virus, a newly suggested carlavirus species, was the most closely related virus with 62% nucleotide identity. The presence of two heptanucleotide-motifs for subgenomic RNA synthesis was confirmed in this sequence.

Population Dynamics of Whiteflies and Associated Viruses in South America: Research Progress and Perspectives

“…"Melon yellowing" is the primary viral disease of melon plants in Brazil [10,25]. This disease is often found in mixed infections with at least three viruses infecting melon plants, such as CABYV, transmitted by aphids, and CWBWV, which, like MYAV, is transmitted by the whitefly B. tabaci MEAM1 species [10,183]. Symptoms caused by virus infection on plants mainly develop on older leaves with yellowing and mottling, as well as the reduction of solid soluble content ( • Brix) in the fruits [10].…”

Caracterização do carlavírus Melon yellowing-associated virus e do polerovírus Cucurbit aphid-borne yellows virus em meloeiro

“…The aa sequences of the TGBs of the MYaV-M22 isolate (this study) and the homologous sequences of a previously reported isolate (Nagata et al, 2010) differed, with 90.6% aa sequence identity for TGB1, 94.5% for TGB2, and 92.5% for TGB3. The CP aa sequence of these isolates shares 97.5 % identity; and that of NaBp, 94.8% identity.…”