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Title: PHYTOPHTHORA IPOMOEAE, A NEW HOMOTHALLIC SPECIES CAUSING LEAF BLIGHT ON IPOMOEA LONGIPEDUNCULATA IN THE TOLUCA VALLEY OF CENTRAL MEXICO

Author
item FLIER, W - PLNT RES INTL,NETHERLANDS
item Grunwald, Niklaus - Nik
item KROON, L.P.N.M. - PLNT RES INTL,NETHERLANDS
item VAN DEN BOSCH, T.B.M. - PLNT RES INTL,NETHERLANDS
item GARAY-SERRANO, E - PICTIPAPA, MEXICO
item LOZOYA-SALDANA, H - UNIV AUTONOMA CHAPINGO,MX
item BONANTS, P.J.M. - PLNT RES INTL,NETHERLANDS
item TURKENSTEEN, L - PLNT RES INTL,NETHERLANDS

Submitted to: Mycological Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/1/2002
Publication Date: 7/1/2002
Citation: FLIER, W.G., GRUNWALD, N.J., KROON, L., VAN DEN BOSCH, T., GARAY-SERRANO, E., LOZOYA-SALDANA, H., BONANTS, P., TURKENSTEEN, L.J. PHYTOPHTHORA IPOMOEAE, A NEW HOMOTHALLIC SPECIES CAUSING LEAF BLIGHT ON IPOMOEA LONGIPEDUNCULATA IN THE TOLUCA VALLEY OF CENTRAL MEXICO. MYCOLOGICAL RESEARCH. 106(7):848-856. 2002.

Interpretive Summary: The Toluca Valley is the center of diversity of several species of Phytophthora including including P. infestans infecting potatoes and P. mirabilis infecting a native host plant (Mirabilis jalapa). A Phytophthora species was found on blighted foliage of Ipomoea longipedunculata, a morning glory species native to the highlands of central Mexico. Based on host range, morphology, allozymes, mitochondrial DNA haplotype and rDNA sequences it is concluded that a new Phytophthora species, P. ipomoeae, is the causal agent. This work establishes the existence of a new oomycete species.

Technical Abstract: A Phytophthora species was found on blighted foliage of Ipomoea longipedunculata, a morning glory species native to the highlands of central Mexico. Based on host range, morphology, allozymes, mitochondrial DNA haplotype and rDNA sequences it is concluded that a new Phytophthora species, P. ipomoeae, is the causal agent.