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    Comparative root and leaf anatomy of the Turkish Iris subgenus Scorpiris and their taxonomic and phylogenetic utility
    (Taylor & Francis Ltd, 2022) Celep, Aysegul; Tugay, Osman; Dural, Huseyin; Ulukus, Deniz; Bahadur, Saraj; Celep, Ferhat
    The genus Iris is an economically and ornamentally important genus in the family Iridaceae. Root and leaf anatomy have great potential to aid with species identification and clarify taxonomy of plant species within the family. Iris subgen. Scorpiris are a taxonomically difficult group due to morphological character variation and overlapping geographical distribution. Thus, additional morphological characters need to be articulated for correct identification and to define species boundaries in the group. Here, we studied root (nine characters) and leaf (10 characters) anatomical traits of seven species in the Iris subgen. Scorpiris in detail to evaluate their taxonomic value. Significant variation was found in the transverse section of the root (i.e. exodermis, cortex cells, endodermis, pericycle, xylem and phloem) but not in leaf anatomy. Hence, root anatomical traits can be used as additional characters for correct identification of species within the Iris subgen. Scorpiris. Box plots, principal component analyses and one-way analysis of variance were performed using quantitative characters for the studied species. Our results demonstrate that the number of exodermis layers, protoxylem and metaxylem numbers in the roots are of phylogenetic value in the studied species.
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    Öğe
    Conservation Assessment of a critically endangered endemic Polygonum samsunicum (Polygonaceae) with emended description from Turkey
    (Sciendo, 2022) Karaer, Fergan; Celep, Ferhat; Celep, Aysegul; Kutbay, H. Guray
    Polygonum samsunicum is one of the endemic species from Turkey. Up to now, it has been only known from the type locality (Samsun /Ladik). This research intends to define the global conservation status and strategies of locally distributed endemic P. samsunicum which has been confronted with the danger of extinction due to anthropogenic effects in recent years. In this research, we did extensive field studies and collected all needed data for determining the precise conservation status of P. samsunicum. We reported nine additional populations from Upper Tersakan valley, where the Mediterranean climate is dominant, and the size of populations, altitude, coordinates, habitat types, and the threats it faces in each locality were given. GeoCAT analyses at global levels indicate the grade of occurrence 21.609 km(2) and area of occupancy 10.094 km(2) and there could be an inferred decline due to habitat loss and fragmentation of the original population, suggesting local endemic species might be classified as CR, based on criteria B1ab (i, ii, iii) + 2ab (i, ii, iii) in the Red List categorization. Its parts are also consumed by local people due to its medicinal features. For in-situ conservation, phenological life history and detailed ecological studies, as well as population monitoring and ex-situ conservation studies should be continued together. Establishing cooperation between universities, research institutes, and local management authorities is strongly needed for long-term monitoring of population size, distribution, overgrazing, and public awareness.