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Molecular phylogenetic analyses reveal a close evolutionary relationship between Podosphaera (Erysiphales: Erysiphaceae) and its rosaceous hosts Naturalis
Takamatsu, S.; Niinomi, S.; Harada, M.; Havrylenko, M..
Podosphaera is a genus of the powdery mildew fungi belonging to the tribe Cystotheceae of the Erysiphaceae. Among the host plants of Podosphaera, 86 % of hosts of the section Podosphaera and 57 % hosts of the subsection Sphaerotheca belong to the Rosaceae. In order to reconstruct the phylogeny of Podosphaera and to determine evolutionary relationships between Podosphaera and its host plants, we used 152 ITS sequences and 69 28S rDNA sequences of Podosphaera for phylogenetic analyses. As a result, Podosphaera was divided into two large clades: clade 1, consisting of the section Podosphaera on Prunus (P. tridactyla s.l.) and subsection Magnicellulatae; and clade 2, composed of the remaining member of section Podosphaera and subsection Sphaerotheca. Because...
Tipo: Article / Letter to the editor Palavras-chave: 28S rDNA; Evolution; ITS; Molecular clock; Phylogeny; Powdery mildew fungi; Rosaceae.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/532391
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Molecular phylogeny and taxonomy of Eurasian Neoerysiphe species infecting Asteraceae and Geranium Naturalis
Heluta, V.; Takamatsu, S.; Harada, M.; Voytyuk, S..
Because Eurasian samples of Neoerysiphe collected on the Asteraceae were not identical in morphology, the molecular and morphological differences among these specimens were compared with those of the American N. cumminsiana. Neoerysiphe on Asteraceae was found to consist of at least four different species. Three of them are described as new species, viz. N. hiratae, N. joerstadii, and N. nevoi. Neoerysiphe hiratae is a Japanese species parasitizing hosts belonging to the genera Cacalia and Ligularia (tribe Senecioneae). Neoerysiphe joerstadii was found in Israel on Phagnalon rupestre (tribe Gnaphalieae). Neoerysiphe nevoi was recorded in Israel and Ukraine on a number of hosts in different genera but all belonging to tribe Cichorieae. Thus, Eurasian...
Tipo: Article / Letter to the editor Palavras-chave: 28S rDNA; Asteraceae; Erysiphales; Japan; Mediterranean region; New species; RDNA ITS region; Systematics.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/531826
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