Effector Repertoire of : In Search of Possible Virulence Factors Responsible for Its Host Specificity.

is an oomycete plant pathogen closely related to It infects tree tomato () in northern South America, but is, under natural conditions, unable to infect potatoes or tomatoes, the main hosts of its sister species . We characterized, and compared the effector repertoires of and other species. To this end, we used approaches to predict and describe the repertoire of secreted proteins in species and determine unique and core effectors.

Two Clonal Species of Associated to Solanaceous Crops Coexist in Central and Southern Colombia.

In Colombia, late blight is considered one of the most limiting diseases on potato and tomato production. Recently, a new species, , was described infecting tree tomato crops in the south of Colombia. However, the distribution and the host range of this new emerging pathogen in the country are unknown.

Differential Susceptibility of Tree Tomato () Cultivars to Late Blight Caused by .

Host-pathogen interactions of a new species of , causal agent of late blight of tree tomato ( Cav.), identified as , were investigated with four different cultivars. Thirty-six isolates, collected from southern Colombia between 2008 and 2009, were used to inoculate common tree tomato cultivars, Común, Híbrido, Injerto, and Holandés.

, a new species within clade 1c causing late blight on in Colombia.

Over the past few years, symptoms akin to late blight disease have been reported on a variety of crop plants in South America. Despite the economic importance of these crops, the causal agents of the diseases belonging to the genus have not been completely characterized. In this study, a new species was described in Colombia from tree tomato (), a semi-domesticated fruit grown in northern South America.

Determining Whether Geographic Origin and Potato Genotypes Shape the Population Structure of Phytophthora infestans in the Central Region of Colombia.

Pathogen variation plays an important role in the dynamics of infectious diseases. In this study, the genetic variation of 279 Phytophthora infestans isolates was assessed using a combination of 12 microsatellite simple-sequence repeat markers. Isolates were collected from 11 different potato cultivars in 11 different geographic localities of the central region of Colombia.