Phytophthora betacei, a new species within Phytophthora clade 1c causing late blight on Solanum betaceum in Colombia

M. F. Mideros, D. A. Turissini, N. Guayazán, H. Ibarra-Avila, G. Danies, M. Cárdenas, K. Myers, J. Tabima, E. M. Goss, A. Bernal, L. E. Lagos, A. Grajales, L. N. Gonzalez, D. E. L. Cooke, W. E. Fry, N. Grünwald, D. R. Matute, S. Restrepo

Research output: Contribution to journalArticle

5 Citations (Scopus)
129 Downloads (Pure)

Abstract

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 Phytophthora have not been completely characterized. In this study, a new Phytophthora species was described in Colombia from tree tomato (Solanum betaceum), a semi-domesticated fruit grown in northern South America. Comprehensive phylogenetic, morphological, population genetic analyses, and infection assays to characterize this new species, were conducted. All data support the description of the new species, Phytophthora betacei sp. nov. Phylogenetic analyses suggest that this new species belongs to clade 1c of the genus Phytophthora and is a close relative of the potato late blight pathogen, P. infestans. Furthermore, it appeared as the sister group of the P. andina strains collected from wild Solanaceae (clonal lineage EC-2). Analyses of morphological and physiological characters as well as host specificity showed high support for the differentiation of these species. Based on these results, a complete description of the new species is provided and the species boundaries within Phytophthora clade 1c in northern South America are discussed.

Original languageEnglish
Pages (from-to)39-55
Number of pages17
JournalPersoonia
Volume41
Early online date18 Dec 2018
DOIs
Publication statusPublished - Dec 2018

    Fingerprint

Cite this

Mideros, M. F., Turissini, D. A., Guayazán, N., Ibarra-Avila, H., Danies, G., Cárdenas, M., Myers, K., Tabima, J., Goss, E. M., Bernal, A., Lagos, L. E., Grajales, A., Gonzalez, L. N., Cooke, D. E. L., Fry, W. E., Grünwald, N., Matute, D. R., & Restrepo, S. (2018). Phytophthora betacei, a new species within Phytophthora clade 1c causing late blight on Solanum betaceum in Colombia. Persoonia, 41, 39-55. https://doi.org/10.3767/persoonia.2018.41.03