Coat protein sequence comparisons of three Mexican isolates of papaya ringspot virus with other geographical isolates reveal a close relationship to American and Australian isolates

• Published in: Archives of virology Vol. 145; no. 4; pp. 835 - 843
• Main Authors: Silva Rosales, L, Becerra Leor, N, Ruiz Castro, S, Teliz Ortiz, D, Noa Carrazana, JC
• Format: Journal Article
• Language: English
• Published: Wien Springer 27-04-2000; New York, NY Springer Nature B.V
• Subjects: Australia; Biological and medical sciences; Epidemiology; Fundamental and applied biological sciences. Psychology; Generalities. Techniques. Transmission, epidemiology, ecology. Antiviral substances, control; Mexico; Microbiology; Papaya ringspot virus; Phytopathology. Animal pests. Plant and forest protection; Plant viruses and viroids; USA; Virology; Central America; Mexico; America; Plant pathogen; Sequence alignment; Homology; Protein; Virus; Papaya ringspot virus; Molecular epidemiology; Isolate; Potyvirus; Capsid; Potyviridae; Comparative study; Structural analysis
• ISSN: 0304-8608; 1432-8798
• DOI: 10.1007/s007050050676

The coat protein gene of the papaya ringspot virus was cloned and sequenced in three Mexican isolates (two from Veracruz, and one from Chiapas). The sequences of these viral isolates were compared to those of eleven isolates from other parts of the world. They had higher similarity to isolates from Australia and the United States than to Asian isolates. A region of about one hundred nucleotides neighboring the putative aphid transmission triplet of the coat protein, contained repeats of an EK (glutamic acid-lysine) motif in all the sequences. The bearing of this region on the genetic relationships and geographical distribution of the isolates is analyzed and discussed.[PUBLICATION ABSTRACT]