Genetic diversity of marginal populations of Populus euphratica Oliv. from highly fragmented river ecosystems

Kansu, Çiğdem
Kaya, Zeki
Populus euphratica Oliv. (Euphrates poplar) is one of the naturally distributed poplar species and limited to south and southwestern Turkey. The species possesses great importance for both renewable energy resources and persistence of a healthy river ecosystem. Due to increased habitat destructions and fragmentation by human activities, the distribution area of this species has become narrower. Hence, searching for potential genetic diversity present in species' genetic resources is of great importance in terms of its resilience to changing environment as well as breeding and use. To explore genetic structure and diversity of Euphrates poplar, natural populations in the GOksu and Euphrates river ecosystems were studied with 21 microsatellite DNA loci. Results demonstrated reduced level of genetic diversity (Ho:0.44, uHe:0.45) and low differentiation among two river populations (F-ST = 0.07), suggesting a common origin. It appears that severe past reductions in population sizes have resulted in loss of genetic variation in the species. Native populations of this species in two rivers seemed to be marginal with continued gene pool shrinkage. Therefore, they are in great danger of collapsing, mainly because of continued habitat loss and fragmentation. Genetic data generated with the current study provide important information which could be useful for future restoration and conservation studies of the species.


A new species of Acantholimon Boiss. (Plumbaginaceae) from Ankara, Turkey
Doğan, Musa (Oxford University Press (OUP), 2002-12-01)
Acantholimon anatolicum Dogan & Akaydin sp. nov. (Plumbaginaceae) is described and illustrated. The species grows on deep gypsum-rich sandy soil on eroded mountain slopes between Cayirhan and Nallihan in Ankara. Diagnostic morphological characters that discern it from closely related species are discussed and its conservation status is indicated. A revised key to Acantholimon species with dense terminal spikes and excurrent scapes is given for the species found in Turkey. (C) The Linnean Society of London.
Rediscovery of Dichoropetalum aureum (Umbelliferae) in South Anatolia (Turkey)
ADIGÜZEL, NEZAKET; BANİ, BARIŞ; Mavi, Ozlem (2011-02-07)
Dichoropetalum aureum (BOISS. & BALANSA) PIMENOV & KLJUYKOV was collected from Turkey for the first time in 1856 and described in 1859. Although the species was collected from Lebanon and Israel, it has not been recorded from Turkey since 1856. This study comprises the recollection of Dichoropetalum aureum from the type locality and neighbouring areas after 150 years and also an expanded morphological description. Ecological parameters such as soil and climatic features are given in addition to information ...
Leaf anatomy of Agropyron Gaertn. (Gramineae) in Turkey
Mavi, D. Ozlem; Doğan, Musa; Cabi, Evren (2011-01-01)
Agropyron cristatum (L.) Gaertn. is represented by 2 subspecies in Turkey, namely subsp. incanum (Nabelek) Melderis and subsp. pectinatum (M.Bieb.) Tzvelev. This study examines the taxonomic significance of the leaf properties of the taxa of Agropyron Gaertn., comprising diagnostic anatomical features obtained from leaf transverse sections as well as leaf surface micromorphology. Results of the study show that most of the characters, such as the shape of the leaf blades; the size and number of stomata; the ...
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Karaer, Fergan; Celep, Ferhat (2007-12-01)
Scorzonera amasiana Hausskn. and Bornm. was described from type specimens collected by J.F.N. Bornmueller in 1889 but it was not collected again until 1993, when it was found near Amasya, Turkey. Populations of S. amasiana were quite small at that limited locations and were vulnerable to human impacts. Therefore, suitable conservation strategies should be developed immediately in order to protect the species from probable extinction. Here, an additional three small populations are reported. Brief history, m...
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Blumeria graminis f.sp. hordei is an obligate biotrophic parasite causing powdery mildew disease in several cereals, including barley. Virus induced gene silencing (VIGS) is a widely used powerful tool in plant functional-genomic studies to determine the functions of genes in disease resistance. In this thesis study, the function of RAD23 gene in barley in plant resistance was investigated. The RAD23 is a ubiquitin (Ub) binding protein involved in programmed protein degradation by transferring of ubiquityla...
Citation Formats
Ç. Kansu and Z. Kaya, “Genetic diversity of marginal populations of Populus euphratica Oliv. from highly fragmented river ecosystems,” SILVAE GENETICA, pp. 139–151, 2020, Accessed: 00, 2021. [Online]. Available: