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ARS Home » Research » Publications at this Location » Publication #132986
Title: CHARACTERIZATION OF PHYTOPHTHORA INFESTANS IN MICHOACAN, MEXICO

Author
item FERNANDEZ-PAVIA, S - UNIV MICHOACANA, MX
item RODRIGUEZ-ALVARADO, G - UNIV MICHOACANA, MX
item GARAY-SERRANO, E - PICTIPAPA, MX
item STURBAUM, A - PICTIPAPA, MX
item Grunwald, Niklaus - Nik
item SANCHEZ-YANEZ, J - UNIV MICHOACANA, MX
item LOZOYA-SALDANA, H - PICTIPAPA, MX

Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: 1/1/2002
Publication Date: 6/1/2002
Citation: FERNANDEZ-PAVIA, S.P., RODRIGUEZ-ALVARADO, G., GARAY-SERRANO, E., STURBAUM, A.K., GRUNWALD, N.J., SANCHEZ-YANEZ, J.M., LOZOYA-SALDANA, H. CHARACTERIZATION OF PHYTOPHTHORA INFESTANS IN MICHOACAN, MEXICO. PHYTOPATHOLOGY. 92(6):S25. 2002.

Interpretive Summary:

Technical Abstract: The state of Michoacan represents 8% of the total potato production in Mexico. Despite important yield reduction by potato late blight, information about Phytophthora infestans populations in the region is limited. Twenty-nine P. infestans isolates collected from cultivated potato fields near Patzcuaro, Michoacan, were analyzed for genetic variation by mating type, allozyme loci (Gpi and Pep) and DNA fingerprinting. Mitochondrial DNA haplotype analysis is in progress. To detect oospore formation in nature, potato leaflets with multiple lesions were collected where both mating types were found. Seventy five percent of potato leaflets contained oospores. Genotypic diversity was detected using DNA fingerprinting and allozyme analysis.