Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2025Molecular Insight on Phylogeny and Systematics of the Narrowly Endemic Centaurea bingoelensis (Asteraceae)
Yazdıç, Ferit Can; Açar, Mıkaıl; Cakilcioglu, Ugur; Tasar, Neslihan; Çelik, İbrahim Seyfettin
Centaurea L. is a genus that is systematically discussed and whose taxonomic issues need to be clarified in the light of molecular techniques developed in recent years. This study aims to contribute taxonomically in molecular terms by studying the morphological and phylogenetic relationships of Centaurea bingoelensis. This limited, endemic species grows naturally in the Bingöl province of Türkiye. A phylogenetic analysis based on the molecular marker ITS, which is the most preferred in evolutionary studies and found in nuclear DNA, has been proposed as a molecular marker of C. bingoelensis , an endemic plant in Türkiye, and has not yet been molecularly identified. For this purpose, PCR amplification of the fragment mentioned above was performed, followed by direct sequencing, analysis of nucleotide variation, and phylogenetic analysis with different species. The Centaurea species identified so far have been shown to have three main distinct major clades and the specific phylogenetic methods used (NJ, ML, MP) and the ITS nucleotide sequences analyzed revealed a close phylogenetic relationship between C. bingoelensis and C. spectabilis. For a more accurate phylogenetic classification of this species within the Asteraceae family, their close relationships were probed using similar sequences from the GenBank Database. Phylogenetic analysis of C. bingoelensis specimens using ITS sequences reveals their position in the Asteraceae family and molecular support for these specimens being new species as proposed. Although morphologically similar to C. fenzlii and C. obtusifolia, the remarkable point of our study is that C. bingoelensis is phylogenetically closer to C. spectabilis. This work has exciting implications for understanding the evolution and diversification of the genus Centaurea. In addition, the results of this study show that the samples identified as Centaurea species in Türkiye are still not entirely determined genetically.
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İncele - DüzeltmeAçık Erişim2024Scopus SJRQ2Correction: Genotoxic effects of copper nanoparticles on Vicia pannonica Crantz. root meristem cells (Journal of Nanoparticle Research, (2024), 26, 8, (185), 10.1007/s11051-024-06096-y)
Tasar, Neslihan
The original version of this article unfortunately contained incorrect Figs. 2, 3, and 4. Lastly, Open access cancellation shall be initiated. The approval manager initially approved the article by mistake, and they approved it above their maximum article threshold by accident. (Figure presented.) (Figure presented.) (Figure presented.) A Adhesion in prophase, B distorted prophase, C metaphase, D distorted metaphase, E non-collection in metaphase plaque, F lagging chromosome in metaphase, G adhesion in metaphase, H chromosome loss in metaphase, I chromosome breakage in metaphase, J asynchronous division in anaphase, K distorted anaphase, L lagging chromosome in anaphase, M polar deviation in anaphase, N chromosome bridges in anaphase, O advance in anaphase, P polar deviation in telophase, R bridge in telophase, S lagging chromosome in telophase, T distorted telophase, U adhesion in telophase (magnification = × 100) A The scanning electron microscopy (SEM) image of the control group, EDS characteristic spectrum, and mapping image. B The scanning electron microscopy (SEM) image of the sample that was prepared with 50 ppm Cu NPs, EDS characteristic spectrum, and mapping image. C The scanning electron microscopy (SEM) image of the sample that was prepared with 150 ppm Cu NPs, EDS characteristic spectrum, and mapping image. D The scanning electron microscopy (SEM) image of the sample that was prepared with 300 ppm Cu NPs, EDS characteristic spectrum, and mapping image The XRD plots of the samples that were obtained from V. pannonica plant grown with Cu (40–60 nm) NP
- MakaleAçık Erişim2024Scopus SJRQ2Genotoxic effects of copper nanoparticles on Vicia pannonica Crantz. root meristem cells
Tasar, Neslihan
With the increasing use of metal nanoparticles, their access to the food chain has become the main concern for scientists. The present study sheds light on the copper nanoparticles (Cu NPs), which are widely used in many industries today. For this purpose, Vicia pannonica Crantz., a common fodder plant, was used and exposed to metal-based Cu NPs. To determine the genotoxic effects on root meristem cells, total of 3 different concentrations (50 ppm, 150 ppm, and 300 ppm) of Cu NPs and the control in deionized water solutions were prepared. The determination of the accumulation and elimination of Cu NPs in Vicia pannonica used in the study was carried out using with X-ray diffraction (XRD), scanning electron microscopy (SEM), SEM element mapping, and energy dispersive X-ray diffraction (EDS) characteristic spectrum analysis. All doses of Cu NPs caused significant decreases in the Mitotic index of V. pannonica meristem cells compared to the control. Multiple analyzes carried out in the study showed that Cu NPs caused abnormalities in cell division such as C-metaphase, polar aberration, deconstructed anaphase, chromosome breakage, loss of genetic material, failure to assemble in the metaphase plate, deconstructed metaphase, asynchronous division remaining chromosome in metaphase, adhesion, deconstructed prophase, advanced chromosomes, and chromosome bridges in anaphase. Results support that Cu NPs have a genotoxic effect on V. pannonica.
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İncele - MakaleAçık Erişim2023Antimicrobial Activity of Essential Oils of Foeniculum vulgare Mill and Pimpinella anisum L (Apiaceae) Species
Gedik, Osman; Yazdıç, Ferit Can; Tasar, Neslihan; Karaman, Altuğ
Today, essential oils are considered safe substances and can be used as antibacterial additives. Pimpinella anisum L. (Aniseed) and Foeniculum vulgare Mill. var. dulce (fennel) species are of great economic importance. It is among the medicinal and aromatic plants cultivated in wide areas in our country. In this study, it was aimed to determine the antimicrobial properties of essential oils obtained from Foeniculum vulgare Mill. and Pimpinella anisum L plants. The essential oils of the species were obtained by using the distillation method. The antimicrobial activities of essential oils by hand were studied using the hollow agar method. Known to be medically important in food, cosmetics and pharmaceutical products Enterobacter aerogenes (ATCC 13048), Enterococcus faecalis (ATCC 29212), Salmonella enteritidis (ATCC 13075), Staphylococcus aureus subsp. aureus (ATCC 25923), Escherichia coli (ATCC 25922) and Serratia marcescens (ATCC 13880) evaluated against pathogen and microbial contaminants. While Foeniculum vulgare showed results parallel to the antibiotic used as standard, no antibacterial activity was observed in Pimpinella anisum L.
AtıfOpenAlex2TR Dizin2İncele - MakaleAçık Erişim2023Hypericum L. Cinsine Ait Bazı Türlerin Uçucu Yağlarının Antibakteriyel Etkisi
Gedik, Osman; Yazdıç, Ferit Can; Tasar, Neslihan; Karaman, Altuğ
Bitkilerden elde edilen biyolojik aktif bileşenlerin incelenmesi son zamanlarda en çok araştırılan konular arasındadır. Türkiye florasının çok zengin bir yapıya sahip olması, bu coğrafyada yetişen bitkilerin araştırılmasının önemli olduğunu göstermektedir. Bu çalışmada, kimyasal bileşen olarak eski ve yaygın bir kullanım alanına sahip olan aynı zamanda önemli bir tıbbi bitki olan Hypericum cinsine ait 3 taksondan elde edilen uçucu yağlar antibakteriyel etkileri yönüyle araştırılmıştır. Hypericum spectabile Jaub. & Spach (endemik tür), H. scabrum L., H. venustum Fenzl. türlerinin uçucu yağları distilasyon yöntemi kullanılarak elde edilmiştir. Elde edilen bu yağların antibakteriyel etkileri, in vitro olarak birçok ilaca direnç gösterdiği bilinen; Enterobacter aerogenes (ATCC 13048), Enterococcus faecalis (ATCC 29212), Salmonella enteritidis (ATCC 13075), Staphylococcus aureus subsp. aureus (ATCC 25923), Escherichia coli (ATCC 25922) ve Serratia marcescens (ATCC 13880) patojen bakterileri kullanılarak araştırılmıştır. Türlerin farklı uçucu yağları, çeşitli mikroorganizmalara karşı antibakteriyel aktivite için oyuk agar testi kullanılarak analiz edilmiştir. Tüm uçucu yağların test edilen tüm patojen strainlerine karşı değişen oranlarda (4,80±0,87-27,73±1,27 mm) aktivite gösterdiği gözlenmiştir. Bu türler, literatürde antibakteriyel aktivite açısından yeni değerlendirilen türler arasında gösterilebilir.
AtıfOpenAlex4TR Dizin3İncele - MakaleAçık Erişim2023Demir oksit (Fe2O3) nanopartikülünün Allium tuncelianum (Tunceli Sarımsağı) kök ucu hücrelerindeki mitotik etkisi
Tasar, Neslihan
Dünya nüfusunun hızla artmasıyla birlikte ivme kazanan endüstriyel faaliyetler ve doğal kaynakların bilinçsiz tüketimi çevre kirliliğine sebep olmaktadır. Nanopartikül kullanılarak elde edilen malzemeler birçok alanda kullanılmaktadır. Tıp alanında kullanılan cihazlar, gıda üretimi ve paketlenmesi, elektronik, enerji üretimi ve kozmetik bu alanların başında sayılabilir. Nano-endüstriyel faaliyetler sonucunda demir oksit nanopartikülü (Fe2O3 NP) kullanımının artışıyla birlikte bu NP’ün toprakta, suda ve havada birikeceği düşünülmektedir. Bu çalışmada, değişik dozlarda hazırlanan (125, 250 ve 500 ppm) 20-40 nm Fe2O3 NP’ lüne maruz bırakılan ve indikatör bir organizma olan Allium tuncelianum (Kollmann) Özhatay, B.Mathew & Şiraneci (Tunceli sarımsağı) bitkisinin kök meristem hücrelerindeki mitotik etkisinin ortaya çıkarılması amaçlanmıştır. Fe2O3 NP’lü, genetik materyal kaybı, yapısı bozulmuş profaz, yapışıklık, metafazda kromozom gruplaşmaları, yapısı bozulmuş metafaz, yapısı bozulmuş anafaz, fragment, kutupsal sapma, köprü, ileri gitme, asenkron bölünme, star anafaz, multipolarite, yapısı bozulmuş telofaz gibi bazı mitotik anormalliklere sebep olmuştur. Bütün bu sonuçlar göstermiştir ki Fe2O3 NP’ lü genotoksik ve klastogenik etkiye sahiptir. Kısaca bu sonuçlar, Organizmalar tarafından alınan Fe2O3 NP’ lünün hem organizma hem de bir üst tüketici için tehlike oluşturabileceğini göstermektedir. Yine bu bulgular organizmaları etkileyen Fe2O3 NP’ lünün, biyobirikiminin azaltılması için kontrollü olarak üretilmesi ve kullanılmasının sonuçta da güvenli bir şekilde bertaraf edilmesi gerektiğini açığa çıkarmaktadır.
- MakaleYalnız künye2023Scopus SJRQ2Genotoxic effect of iron oxide (Fe2O3) nanoparticles on Triticum aestivum (wheat)
Tasar, Neslihan
Industrial activities and unconscious consumption of natural resources cause environmental pollution with the rapid increase in the world population. As a result of the widespread use of iron oxide nanoparticles (Fe2O3 NP) with nano-industrial activities, it is predicted that this NP will accumulate in the air, water, and soil. In the present study, the purpose was to find out the genotoxic effects on root meristem cells of the Triticum aestivum L. plant, which is an indicator organism exposed to 20–40 nm Fe2O3 NPs at different concentrations (100, 200, and 400 ppm). The amount of Fe2O3 NP accumulated in T. aestivum used in the study was determined with x-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM), SEM element map, and EDS characteristic spectrum. All concentrations of Fe2O3 NP caused significant decreases in the mitotic index. Fe2O3 NPs significantly increased the frequency of mitotic abnormalities in T. aestivum root tip cells at all treatment times and all concentrations when compared to the control. Fe2O3 NPs were formed by various mitotic abnormalities such as loss of genetic material, deconstructed prophase, adhesion, chromosome groupings in metaphase, deconstructed metaphase, C-Metaphase, chromosomal loss, chromosomal fracture, polyploidy, deconstructed anaphase, lagging chromosome, fragment, polar deviation, bridging, propagation, asynchronous division, star anaphase, multipolarity, and deconstructed telophase. All these results show that Fe2O3 NPs are genotoxic and clastogenic and may also cause DNA damage. Briefly, these data show that Fe2O3 NPs taken by organisms may pose a danger to the organism and the upper consumer. These findings also show that the production and use of Fe2O3 NPs, which affect organisms, must be controlled, and ultimately, be safely disposed of to reduce their bioaccumulation. Research Highlights: In the present study, the purpose was to find out the genotoxic effects on root meristem cells of the Triticum aestivum L. (bread wheat) plant, which is an indicator organism exposed to 20–40 nm Fe2O3 NPs at different concentrations (100, 200, and 400 ppm). The amount of Fe2O3 NP accumulated in T. aestivum used in the study was determined with x-ray diffraction (XRD) spectroscopy, scanning electron microscopy (SEM), SEM element map, and EDS characteristic spectrum. The mitotic index was calculated to reveal the genotoxic effect. “Loss of genetic material, deconstructed prophase, adhesion, chromosome groupings in metaphase, deconstructed metaphase, C-Metaphase, chromosomal loss, chromosomal fracture, polyploidy, deconstructed anaphase, lagging chromosome, fragment, polar deviation, bridging, propagation, asynchronous division, star Chromosomal abnormalities such as anaphase, multipolarity, and deconstructed telophase” were visualized. Fe2O3 NPs are genotoxic and clastogenic and may also cause DNA damage.
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İncele - MakaleAçık Erişim2022Juniperus L. (Ardıç) cinsine ait iki türün yapraklarından elde edilen uçucu yağların antimikrobiyal aktivitesi
Gedik, Osman; Yazdıç, Ferit Can; Tasar, Neslihan; Karaman, Altuğ
Juniperus L. cinsi; yaprakları sivri ve uzun, meyveleri kozalak şeklinde parlak siyah renkte, boyu ortalama 8-9 metre uzunlukta, çok uzun yıllar yaşayabilen bir ağaçtır. Bu çalışmada geleneksel tıpta kullanımı çok eskiden beri bilinen, Juniperus excelsa subsp. excelsa M.Bieb. ve Juniperus foetidissima Willd. bitkilerinin doğal ortamından toplanan yapraklarından elde edilen uçucu yağlar antimikrobiyal etkileri yönüyle araştırılmıştır. Çalışma materyalini oluşturan uçucu yağlar Neo-Clevenger cihazında ekstrakte edilmiştir. Antimikrobiyal aktiviteleri, oyuk agar yöntemi kullanılarak gıda, kozmetik ve farmasötik ürünlerde tıbbi olarak önemli olan 6 patojen ve mikrobiyal kirleticisine karşı (Enterobacter aerogenes (ATCC 13048), Enterococcus faecalis (ATCC 29212), Salmonella enteritidis (ATCC 13075), Staphylococcus aureus subsp. aureus (ATCC 25923), Escherichia coli (ATCC 25922) ve Serratia marcescens (ATCC 13880)) değerlendirilmiştir. Her iki bitkinin uçucu yağlarının tüm patojenlere karşı antibakteriyel aktivite sergilediği görülmüştür (8.13±0.67-13.43±0.31 mm). Ancak Gram negatif bakterilerin J. excelsa subsp. excelsa ve J. foetidissima’ ya karşı daha hassas olduğu belirlenmiştir.
AtıfOpenAlex1İncele - MakaleAçık Erişim2022Türkiye’ de Yayılış Gösteren Hypericum L. Cinsine Ait 3 Taksonun Uçucu Yağ Bileşenleri
Gedik, Osman; Kurşat, Murat; Tasar, Neslihan
Bu çalışmada ülkemizin biyolojik zenginliklerinin önemli bir parçası olan ve doğal habitatlarından toplanan Hypericum L. cinsine ait Hypericum uniglandosum Hausskn. ex Bornm., Hypericum microcalycinum Boiss. & Heldr. ve Hypericum scabroides N. Robson & Poulter türleri uçucu yağ bileşenleri yönünden araştırılmıştır. Bu türlerden Hypericum uniglandosum ve Hypericum scabroides türleri endemik türdür. Çalışmada kullanılan bitkiler temmuz- ağustos ayında çiçekli dönemde iken toplanarak uçucu yağ bileşenleri yönünden araştırılmıştır. Analiz sonuçlarına göre 14 farklı bileşen tespit edilmiştir. Bitki örnekleri ile yapılan analiz sonuçlarına göre en çok bulunan bileşen; H. uniglandosum’ da; % 90.25, H. microcalycinum’ da; % 91.46 ve H. scabroides’te; % 91.77 olarak alpha-pinene olmuştur. Bu bileşenden başka değişik oranlar olmakla birlikte beta-pinene, beta-myrcene, limonene, cymene gibi çeşitli bileşenler de analiz sonuçlarına göre rapor edilmiştir. Çalışma materyalimizi oluşturan bitkiler üzerinde farklı oranlarda, farklı bileşenler tespit edilmiştir. Ayrıca çalışmamızı oluşturan H. uniglandosum ve H. scabroides türleri endemik tür olduğu için uçucu yağ analizlerinin belirlenmesinin önem arz ettiği düşünülmektedir.
- MakaleAçık Erişim2022Anatomical, Micromorphological, Karyological and Biochemical study of Scutellaria orientalis subsp. virens and Scutellaria salviifolia
Acar, Mikail; Tasar, Neslihan; Akbulut, Guelcin Beker
In this study, the anatomical and micromorphological structure, karyological characteristics and biochemical content of Scutellaria orientalis subsp. virens and endemic Scutellaria salviifolia, whose distributions areas overlap, were compared. Some anatomical and micromorphological differences were observed on the taxa; scleranchymatic pericycle layer on the stem, stomata density, distribution of trichomes, as well as the main vascular bundle and general shape of the petiole. The chromosome numbers of both taxa were determined as 2n = 22. However, there was a difference between chromosome length range and total chromosome length. The chromosome numbers and chromosome morphologies of these species have been defined for the first time in this paper. Differences in biochemical content were observed between species. Chlorophyll a (Chl a), total chlorophyll (Total Chl), total carbohydrate and malondialdehyde (MDA) contents were determined higher in leaf and stem samples of S. orientalis subsp. virens than S. salviifolia. There was no significant difference between the two taxa in terms of chlorophyll b (Chl b) content. Carotenoid (Car) content was detected higher in leaves samples of S. orientalis subsp. virens, but no significant difference was found between stems samples. Also, the effect of taxa on biochemical contents in relation to the habitat they live in is given in this study.
AtıfWoS2OpenAlex2İncele - MakaleYalnız künye2022Scopus SJRQ1Mitotic effects of copper oxide nanoparticle on root development and root tip cells of Phaseolus vulgaris L. seeds
Tasar, Neslihan
Copper oxide nanoparticle (CuO NP) is used widely in many fields in nanotechnology. For this reason, both production, use, and release to the environment are increasing with each passing day. With the increased use of products that contain nanoparticles (NP) (<100 nm), plants and organisms that constitute the food chain are at risk. In the present study, Phaseolus vulgaris L., a very common food plant, was exposed to metal-based CuO NPs. The anomalies that were caused by CuO NP in germination and mitosis of P. vulgaris were investigated. In the trials, a total of 4 groups (Control, 50, 150, and 300 ppm) were formed and examined in three replications. The determination of the accumulation and elimination rate because of NPs in P. vulgaris that was used in the study was made through X-ray diffraction (XRD), scanning electron microscope (SEM), mapping image, and EDX characteristic spectrum analysis. Also, the mitotic effects on germination, root development, and root tip cells of seeds that were grown by treatment with control, 50, 150, and 300 ppm concentrations were investigated. The study was conducted in three replications in a laboratory setting. All concentrations of CuO NPs caused significant decreases in the mitotic index in the root tip cells of P. vulgaris when compared to the control. The mitotic index reached the lowest level, especially at the highest concentration. Multiple analyzes in the study showed that CuO NPs cause abnormalities in cell division such as C-metaphase, distorted metaphase, distorted anaphase and telophase, chromosome breakage, asynchronous division, advanced chromosomes, micronucleus, and loss of genetic material. These findings also support that the Cytogenetic Test of P. vulgaris can be used to evaluate the genotoxicity of new nanomaterials that are used in many consumer products. In this respect, NPs that are taken up by the organisms in the food chain may pose a danger to higher consumer organisms when they accumulate in the tissue. A control mechanism must be established for the use and contamination of these particles and wider studies must be conducted regarding their effects. Highlights: The effects of CuO nanoparticle, which has a very wide usage area, on root development and mitosis of Phaseolus vulgaris L. plant were investigated in the study. The abnormalities of mitotic division on interphase, prophase, metaphase, anaphase, and telophase were visualized. Evaluation was made considering scanning electron microscopy (SEM) and X-ray diffraction (XRD) results as well.
AtıfScopus14WoS10OpenAlex16İncele - MakaleAçık Erişim2021Anatomical, Palynological and Biochemical Studies on Gundelia dersim Vitek, Yüce & Ergin(Asteraceae) an Endemic of Turkey
Açar, Mikail; Beker Akbulut, Gülçin; Tasar, Neslihan
The Asteraceae family is the largest in the plant kingdom in the world. Gundelia is agenus that belongs to this family and is commonly referred to as the kenger name in Anatolia. Gundeliadersim is also an endemic species defined from Eastern Anatolia. In this study, anatomical,palynological and biochemical properties of G. dersim were discussed. When the anatomical structureof G. dersim was examined, it was seen that the mesophyll type, in which the midrib of the leaf wasdeveloped, was unifacial. There are too many sclerenchymatic cells in the vascular bundles. In addition,laticifer elements were seen on the stem and leaf. Also, it was observed that the pollen of the species isin echinate ornamentation and pollen grains are radial symmetrical, isopolar, tricolporate. Followingbiochemical analysis, pigment analysis, total carbohydrate and lipid peroxidation were performed. Thechlorophyll a and chlorophyll b content of the species in both stem and leaf were analyzed, and the mostchlorophyll content was found in the leaf. With this research, for the first time, a detailed anatomicalinvestigation was conducted on the genus Gundelia, and it is a current view with the first considerationof the anatomical, palynological and biochemical aspects of G. dersim.
AtıfOpenAlex1TR Dizin3İncele - MakaleAçık Erişim2018Scopus SJRQ3Morphological, anatomical and cytological investigations on three taxa of Centaurea L. (Asteraceae) from Turkey
Tasar, Neslihan; Doğan, Gülden; Kiran, Yaşar; Oliur Rahman, M.; Çakilcioğlu, Uğur
Morphological, anatomical and cytological features of three Turkish taxa of Centaurea L., viz. C. polypodiifolia Boiss. var. polypodiifolia, C. urvillei DC. subsp. urvillei and C. urvillei subsp. armata Wagenitz were investigated. Stem anatomy revealed the presence of a thick cuticle layer outside the stem, and epidermis with dense hairs was observed in the lower part. Investigation on leaf anatomy showed that different types of hairs on the outside of the leaf were very intense. Palisade parenchyma was observed below the upper and lower epidermis. In Centaurea polypodiifolia var. polypodiifolia, chromosome number was found to be 2n=16, while in C. urvillei subsp. urvillei and C. urvillei subsp. armata 2n=20. Total karyotype length of C. polypodiifolia var. polypodiifolia, C. urvillei subsp. urvillei and C. urvillei subsp. armata was 22.9 μm, 37.84 μm and 40.01 μm, respectively. Among the investigated taxa the karyotype asymmetry index was found lowest in C. urvillei subsp. armata. Satellite was detected in C. urvillei subsp. urvillei and subsp. armata, while it was absent in C. polypodiifolia Boiss. var. polypodiifolia.
AtıfScopus15WoS17OpenAlex9İncele - MakaleAçık Erişim2018Scopus SJRQ3Karyological investigation on seven centaurea L. (Asteraceae) Taxa from Turkey
Tasar, Neslihan; Dogan, Gulden; Kiran, Yasar
The somatic chromosome numbers and karyotypes were examined in seven species of genus Centaurea L. distributed in Turkey. The chromosome numbers were determined as 2n=2x=16 in C. behen L. and C. solstitialis L.; 2n=2x=18 in C. cynarocephala Wagenitz and C. agregata Fisch. & Mey. ex DC. ssp. agregata; 2n=2x=20 in C. iberica Trev. ex Sprengel; 2n=2x=26 in C. balsamita Lam.; 2n=4x=36 in C. virgata Lam. All of the chromosomes had centromeres at median point (M), median region (m), and submedian region (sm). Satellite chromosomes (sat-chromosomes) were observed only in C. virgata. The findings for each of the analyzed taxa are compared each other and with the results of previous studies.
AtıfScopus5WoS3OpenAlex1İncele - MakaleYalnız künye2017Cyanus depressus (M. Bieb.) Soják Türünün Karyolojik ve Palinolojik Yönden İncelenmesi
Doğan, Gülden; Kiran, Yasar; Tasar, Neslihan
Cyanus (Asteraceae) cinsine ait Cyanus depressus (M. Bieb.) Soják türü karyolojik ve palinolojik yönden incelendi. 2011 yılında Elazığ'daki doğal habitatından toplanan türün temel kromozom sayısı 2n=16 olarak tespit edildi. Türe ait kromozomların median (m) ve submedian (sm) sentromerli olduğu gözlendi. Palinolojik çalışmalar sonucunda polen şekli subprolat, apertürleri tricolporat, ornemantasyonun ise skabrate olduğu belirlenerek, gerekli ölçümler yapıldı
AtıfTR Dizin1İncele - MakaleAçık Erişim2017Scopus SJRQ3Comparative morphological, karyological and palynological investigations of three endemic Centaurea L. species (Asteraceae) in Turkey
Hayta, Sukru; Tasar, Neslihan; Kiran, Yasar; Baser, Birol
Centaurea derderiifolia Wagenitz., Centaurea drabifolia Sm. subsp. floccosa (Boiss.) Wagenitz & Greuter and Centaurea kotschyi (Boiss. & Heldr.) Hayek var. floccosa (Boiss.) Wagenitz, which are endemic taxa from Turkey belonging to Centaurea sect. Cheirolepis, were subjected to morphological, karyological and palynological investigations. The somatic chromosome numbers, pollen morphology and detailed morphometric properties were examined. The somatic chromosome numbers were determined as 2n = 2x = 36 in C. derderiifolia, C. kotschyi var. floccosa, and C. drabifolia subsp. floccosa. Karyotype analysis indicated that chromosomes of these Centaurea taxa generally have median region (m), submedian region (sm) and rarely median point (M) karyotypes. The pollen morphology of these endemic taxa of the genus Centaurea was investigated by light and scanning electron microscopy. The pollen grains of the examined species are mainly isopolar and radially symmetric, subprolate, tricolporate. Tectum ornamentation is scabrate and scabrate-perforate, amb triangular. The pollen grains of all taxa studied are 3-zonocolporate. The colpus is usually long, acute at ends and with smooth membrane. Pollen grains belonging to Cheirolepis section reveal homogeneity in their characters.
AtıfWoS7OpenAlex4İncele - MakaleAçık Erişim2014Scopus SJRQ2Morphological, karyological features and pollen morphology of endemic Ebenus haussknechtii Bornm. ex Hub.-Mor. from Turkey: A traditional medicinal herb
Hayta, Sukru; Tasar, Neslihan; Cakilcioglu, Ugur; Gedik, Osman
In this study, morphological, morphometrical, karyological and detailed pollen morphology of Ebenus haussknechtii endemic to Turkey was studied for the first time. In the morphologic study, some morphological and morphometrical features of the plant were observed and compared with the published findings in the Flora of Turkey. Karyogram and idiograms of the plant were also prepared. The chromosome number of E. haussknechtii was determined as 2n = 14 and haploid karyotype formula 5 m + 1 sm + 1M. Metaphase chromosome length ranged from 2.16 to 1.93 mu m and the total haploid chromosome length was 17.90 mu m. The results of the light microscope investigation of the pollen revealed that the pollen grains were radially symmetrical, isopolar, tricolpate and prolate. Measurement of the reticulum heterobrachate indicated their ornamentation to be reticulate. (C) 2014 Elsevier GmbH. All rights reserved.
AtıfWoS16OpenAlex15İncele