Old and New Aphid-Borne Viruses in Coriander in Chile: An Epidemiological Approach

Author:

Zamorano Alan1,Carevic Paulina1ORCID,Gamboa Camila1,Cui Weier1ORCID,Curkovic Tomislav1ORCID,Córdova Pamela2,Higuera Gastón2ORCID,Ramos-Castillo Luz1,Quiroga Nicolás3,Fiore Nicola1ORCID

Affiliation:

1. Facultad de Ciencias Agronómicas, Universidad de Chile, Avenida Santa Rosa 11315, Santiago 8820808, Chile

2. Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Avenida El Líbano 5524, Santiago 7830490, Chile

3. Institute of Agri-Food, Animal and Environmental Sciences (ICA3), Universidad de O’Higgins, Campus Colchagua, San Fernando 3070000, Chile

Abstract

In Chile, edible herbs are mainly grown by small farmers. This type of horticultural crop typically requires intensive management because it is highly susceptible to insects, some of which transmit viruses that severely affect crop yield and quality. In 2019, in coriander plants tested negative for all previously reported viruses, RNA-Seq analysis of one symptomatic plant revealed a plethora of viruses, including one virus known to infect coriander, five viruses never reported in coriander, and a new cytorhabdovirus with a 14,180 nucleotide RNA genome for which the species name Cytorhabdovirus coriandrum was proposed. Since all the detected viruses were aphid-borne, aphids and weeds commonly growing around the coriander field were screened for viruses. The results showed the occurrence of the same seven viruses and the alfalfa mosaic virus, another aphid-borne virus, in aphids and weeds. Together, our findings document the presence of multiple viruses in coriander and the potential role of weeds as virus reservoirs for aphid acquisition.

Publisher

MDPI AG

Reference43 articles.

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