TAILIEUCHUNG - Morphological, karyological and phylogenetic evaluation of Cyclotrichium: A piece in the tribe Mentheae puzzle

The genus Cyclotrichium, a member of the tribe Mentheae subtribe Menthinae (Lamiaceae, Nepetoideae), was analysed with respect to morphological revision, phylogenetic analysis, and cytogenetic properties. All species of the genus were investigated for morphological characters and ITS (internal transcribed spacers) of nrDNA sequence comparison (except C. hausknechtii for ITS). | Research Article Turk J Bot 34 (2010) 159-170 © TÜBİTAK doi: Morphological, karyological and phylogenetic evaluation of Cyclotrichium: a piece in the tribe Mentheae puzzle Tuncay DİRMENCİ1, Ekrem DÜNDAR2,*, Görkem DENİZ2, Turan ARABACI3, Esra MARTIN4, Ziba JAMZAD5 1 Balıkesir University, Necatibey Faculty of Education, Department of Biology Education, 10100, Balıkesir - TURKEY 2Balıkesir University, Faculty of Arts and Sciences, Department of Biology, 10145, Balıkesir - TURKEY 3İnönü University, Faculty of Sciences and Arts, Malatya - TURKEY 4Niğde University, Faculty of Sciences and Arts, Niğde - TURKEY 5Research Institute of Forests & Rangelands, 13185-116, Tehran, IRAN Received: Accepted: Abstract: The genus Cyclotrichium, a member of the tribe Mentheae subtribe Menthinae (Lamiaceae, Nepetoideae), was analysed with respect to morphological revision, phylogenetic analysis, and cytogenetic properties. All species of the genus were investigated for morphological characters and ITS (internal transcribed spacers) of nrDNA sequence comparison (except C. hausknechtii for ITS). Six members of the genus were also analysed for chromosome numbers. The combined results strongly suggested that Cyclotrichium is a separate genus in Nepetoideae with distinct morphological, phylogenetic, and cytogenetic characteristics. For intrageneric phylogeny of Cyclotrichium, 3 groups were recognised: 1. C. niveum; 2. C. origanifolium; and 3. the remaining 6 species. Clinopodium . and Mentha appear to be most closely related to Cyclotrichium. The phylogenetic relationship of Cyclotrichium with Clinopodium ., Mentha, Micromeria, Melissa, and Satureja is discussed. This is the first report on the somatic chromosome numbers of 6 Cyclotrichium species and phylogenetic analysis of Cyclotrichium based on (nrDNA) ITS sequences. Key words: Cyclotrichium, Clinopodium, Satureja, ITS, phylogeny Cyclotrichium cinsinin morfolojik, karyolojik ve .

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