The Phylogeography of Potato Virus X Shows the Fingerprints of Its Human Vector.

Potato virus X (PVX) occurs worldwide and causes an important potato disease. Complete PVX genomes were obtained from 326 new isolates from Peru, which is within the potato crop's main domestication center, 10 from historical PVX isolates from the Andes (Bolivia, Peru) or Europe (UK), and three from Africa (Burundi). Concatenated open reading frames (ORFs) from these genomes plus 49 published genomic sequences were analyzed.

Tobamoviruses of two new species trigger resistance in pepper plants harbouring functional alleles.

Tobamoviruses are often referred to as the most notorious viral pathogens of pepper crops. These viruses are not transmitted by invertebrate vectors, but rather by physical contact and seeds. In this study, pepper plants displaying mild mottle and mosaic symptoms were sampled in four different regions of Peru.

Biological and Molecular Properties of Isolates from Pepino ().

In 1976, a virus with flexuous, filamentous virions typical of the family was isolated from symptomatic pepino () plants growing in two valleys in Peru's coastal desert region. In 2014, a virus with similar-shaped virions was isolated from asymptomatic fruits obtained from pepino plants growing in six coastal valleys and a valley in Peru's Andean highlands. Both were identified subsequently as (WPMV) by serology or high-throughput sequencing (HTS).

The Biology and Phylogenetics of Potato virus S Isolates from the Andean Region of South America.

Biological characteristics of 11 Potato virus S (PVS) isolates from three cultivated potato species (Solanum spp.) growing in five Andean countries and 1 from Scotland differed in virulence depending on isolate and host species. Nine isolates infected Chenopodium quinoa systemically but two others and the Scottish isolate remained restricted to inoculated leaves; therefore, they belonged to biologically defined strains PVS and PVS, respectively.

Complete Genome Sequence of from Bolivia, Obtained from a 33-Year-Old Sample.

We present the complete genomic sequence of a (PVT) isolate originally obtained from a Bolivian potato sample collected in 1976, and we compare it with the genome of the PVT type isolate from Peru. There is an 81% nucleotide identity between the two genomes of this Andean potato virus.