Preliminary evaluation of associated viruses in production systems of cape gooseberry, purple passion fruit, and rose

Abstract

Plant viruses may pose a threat to crops in Colombia. To evaluate the potential risk of yield losses due to plant virus infection, a literature analysis followed by a first field study was carried out focusing on purple passion fruit (Passiflora edulis Sims), cape gooseberry (Physalis peruviana L.), and ornamental rose (Rosa sp.), which are important Colombian exports. Over the past three years, plant material was collected from 21 farms in Cundinamarca and Boyacá, Colombia, two regions that are in close proximity to El Dorado International Airport, the country’s largest air freight terminal. Plants were visually inspected and subsequently tested by bioassay and serological methods. Overall, in the samples investigated by the two diagnostic methods, plant viruses were detected. Detected viruses belong to the genus Poty-, Tobamo-, Nepo-, Ilar-, and Tospovirus. The extent of the distribution and occurrence of these viruses in each crop has to be determined in a representative field study. Such a monitoring program could be supported by a standardized farmer interview. The development of suitable plant virus diagnostic and managements tools is the focus of a cooperation project between German and Colombian universities, the Colombian Agricultural Institute (ICA), the Colombian Corporation of Agricultural Investigation (AGROSAVIA) and the International Center for Tropical Agriculture (CIAT).

Zucchini lineages with levels of resistance to ZYMV and SqMV viruses

“…Among the diseases that occur in cucurbits, those caused by viruses seriously affect the quality and quantity of fruit production, representing one of the most important limiting factors for this crop production (Finetti-Sialer et al, 2012;Yesil, 2019). The phytoviroses have no curative control, and, thus, preventive measures are needed for crop management (Rodríguez et al, 2016;Cutler et al, 2018). Existing strategies to decrease dissemination include the development of cultivars or hybrids with genetic resistance to viral infections (Nogueira et al, 2011).…”

Estudio de <i>Potyvirus</i> y <i>Nigrospora oryzae</i> como agentes patógenos del género <i>Calibrachoa</i>

“…Dado que existe una alta cantidad de especies y variedades ornamentales con orígenes filogenéticos y geográficos que varían considerablemente, el número de agentes infecciosos, tales como los virus, varía en consecuencia, lo que ocasiona una amplia gama de sistemas patológicos de plantas con virus (Engelmann y Hamacher, 2008). Por ello, la presencia de virus conocidos y aún sin explorar en las plantas ornamentales tiene un claro potencial para ser la fuente de los principales patógenos de los cultivos (Verdin et al, 2017), por lo que ciertos estudios indican que las pérdidas económicas originadas por estas enfermedades podrían mitigarse mediante la aplicación de distintas tecnologías (Cutler et al, 2018). Por lo tanto, el estudio de la interacción planta-patógeno, el uso de cultivares resistentes y el cultivo de meristemas resultan de suma importancia para contribuir con la formulación de medidas preventivas contra estos agentes de infección.…”