High-Throughput Sequencing Reveals New Viroid Species in in Mexico.

In the main cactus pear ()-producing region in the State of Mexico, fruit production occupies the largest cultivated area with 15,800 ha, while 900 ha are cultivated for edible young pads ("nopalitos") which are consumed as vegetables. Two composite samples consisting of cladodes of plants for fruit production ( = 6) and another of "nopalitos" ( = 6) showing virus-like symptoms were collected. Both sample sets were subjected to high-throughput sequencing (HTS) to identify the viruses and viroids.

First report of a new provisionally named rose virus B and apple mosaic virus in mixed infections of sp. in Mexico.

Rose (Rosa sp.) is an important ornamental plant in the cut flower industry around the world. This species is prone to hosting several viruses since it is propagated vegetatively, mainly by grafting (Mollov et al.

Mexico: A Landscape of Viroid Origin and Epidemiological Relevance of Endemic Species.

Viroids are single-stranded, circular RNA molecules (234-406 nt) that infect a wide range of crop species and cause economic losses in agriculture worldwide. They are characterized by the existence of a population of sequence variants, attributed to the low fidelity of RNA polymerases involved in their transcription, resulting in high mutation rates. Therefore, these biological entities exist as .