Abstract
The phylogenetic relationships of the following 14 Septoria species pathogenic to Asteraceae were inferred from sequence analyses of the 5.8 S gene of nuclear rDNA and flanking internal transcribed spacers: Septoria atropurpurea, S. astericola, S. calendulae, S. erigerontis, S. gerberae, S. helianthi, S. helianthicola, S. lactucae, S. leucanthemi, S. obesa, S. schnabliana, S. senecionis, S. socia, and S. taraxaci. Fifteen additional Septoria species originating from other host families, eight of which have a known Mycosphaerella teleomorph, were included in the alignment. Also included were selected strains of Cercospora, Pseudocercospora (including Paracercospora), Ramularia, and several other anamorph genera linked to Mycosphaerella available from previous studies.
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