Name and publication
Phytophthora betacei Mideros, L.E. Lagos & S. Restrepo (2018)
Mideros MF, Turissini DA, Guayazán N, Ibarra-Avila H, Danies G, Cárdenas M, Myers K, Tabima J, Goss EM, Bernal A, Lagos LE. 2018. Phytophthora betacei, a new species within Phytophthora clade 1c causing late blight on Solanum betaceum in Colombia. Persoonia-Molecular Phylogeny and Evolution of Fungi 41 (1): 39–55.
name refers to Solanum betaceum, the host plant from which the isolates were obtained
Type: COLOMBIA, Putumayo, Colon, San Pedro locality, isolated from small pieces of infected leaves from S. betaceum plants, 2008, M.F. Mideros, Andes-F 1172 holotype, culture on TTA
Ex-type: culture MFM-P8084
Sequences of ex-type in manuscript: whole genome JAANHX000000000.1
Position in ITS phylogenetic tree
Mideros MF, Turissini MA, Guayazán N, Ibarra-Avila H, Danies G, Cárdenas M, Myers K, Tabima J, Goss EM, Bernal A, Lagos LE, Grajales A, Gonzalez LN, Cooke DEL, Fry WE, Grünwald N, Matute DR, Restrepo S. 2018. Phytophthora betacei, a new species within Phytophthora clade 1c causing late blight on Solanum betaceum in Colombia. Persoonia 41: 39–55.
Colonies and cardinal temperatures
Colony morphology fluffy and uniform on V8A and limited growth on PDA. Minimum growth temperature 10°C, optimum 20°C, and maximum 25°C.
Conditions for growth and sporulation
Sporangia were non to semi-papillate, caducous, and predominantly limoniform in shape with external proliferation close to the sporangial base. Sporangia averaged 36 x 17 µm (overall range 24–40.5 x 12–23 µm).Sporangiophores simple. Hyphal swellings present. Chlamydospores absent.
Most typical characters
Morphologically similar to other species in Clade 1c but exhibits a host preference for Solanum betaceum (tree tomato).
Hosts and distribution
Distribution: Colombia, Equador, Peru
Disease note: late blight of Solanum betaceum which can lead to death of the plants and complete loss of the crop
Host: Solanum betaceum
Additional references and links
Fact sheet author
Treena Burgess, Ph.D., Phytophthora Science and Management, Harry Butler Institute, Murdoch University