Ahmet Aksoy

Akdeniz University · Department of Biology

Onobrychis argaea belonging to the Fabaceae family, is an endangered plant species endemic to Turkey, distributed only in Kayseri Erciyes Mountain. This study represents the first comprehensive investigation into the morphology, anatomy, pollen and seed micromorphology, and chromosome characteristics of O. argaea. The previous description of the sp...

The safflowers (Carthamus tinctorius L. cv Olas) grown hydroponically under nickel (Ni) conditions have been studied in this work. The effects of 0, 0.75, 1.0, 3.0, 5.0, 10.0-, and 15.0-mM Ni on seed germination rate, protein, and pigment content of germinating seeds were investigated. Also, the toxicity of 0.75 mM Ni on plant growth, malondialdehy...

In this research, the total phenolic and flavonoid amounts, phenolic compositions, in vitro antioxidant, antibacterial and antidiabetic properties of the methanol extracts obtained from Scabiosa L. ( Caprifoliaceae ) species distributed in the flora of Türkiye were investigated using chemometric methods. For this purpose, principal component (PCA)...

"Her biri benzersiz ama işleyişi ve unsurları ile aynı olan ekosistemlerdeki karmaşık bağlantıları keşfetmek ve anlamak, günümüz bilim insanlarının ortak araştırma konusudur. Özellikle biyoçeşitliliğin gizemlerini çözmek ve karşılaşılan tüm zorluklara yenilikçi, bilim temelli teknoloji odaklı çözümler geliştirmek, bu sayede doğanın sürdürülebilirli...

Abstract This study investigates the chemical compositions and biological activities of the methanol extracts of three endemic Teucrium species (T. ekimii, T. pestalozzae and T. semrae) collected from Turkey. Total phenolic and flavonoid contents were assessed spectrophotometrically. The total phenolic and flavonoid content in the T. ekimii methano...

İki yakın akraba tür olan Lomelosia argentea ve Lomelosia polykratis türlerinin anatomik özellikleri ilk defa bu çalışmada incelenerek farklılıklarının ortaya konulması ve taksonomik çalışmalarda yaşanabilecek potansiyel karışıklıkların önüne geçilmesi amaçlanmıştır. Bu amaçla mikroskobik gözlemler için parafin metodu kullanılarak türlerin kök, göv...

In this research the metaphase chromosome number and karyotype of Astragalus stenosemioides species growing naturally in Turkey are studied. The study revealed that the chromosome number of A. stenosemioides is 2n = 16. The basic chromosome number of species is determined as x = 8. The karyotype formula of A. stenosemioides is 8m. The total length...

By this study, the palynomorphological traits of 49 taxa (53 plant samples) of the genus Muscari which has been the main research topic and also its relatives, Pseudomuscari , Hyacinthella and Bellevalia have been studied in details of both using light and scanning electron microscope. In the end of palynologic works, it was suggested the descripti...

Muscari vanensis (Asparagaceae) is described and illustrated from East Anatolia, Turkey. This species is distributed in slopes of stony rocky areas facing south of Lake Van (B5 Van Province). Muscari vanensis an endemic confined to East Anatolia, is related to mainly with M. botryoides and M. armeniacum. Diagnostic morphological characters have bee...

In this study, chromosome length, karyomorphology and chromosome asymmetry of six Turkish Muscari species; Muscari muglaensis, M. nazimiyensis, M. pallens, M. pamiryigidii, M. inundatum and M. fatmaceranie were evaluated. The somatic chromosome number of all examined taxa was determined as 2n=18. The basic chromosome number was x=9. Chromosomes con...

Currently, 55 serpentine areas have been determined in Turkey. More than 60 Ni-accumulators and more than 43 serpentine-endemics are known from these areas. Within our field studies in the Mediterranean phytogeographic region, 8 Viola taxa distributed in serpentine areas and their respective soil samples were collected. Cd, Cu, and Zn concentration...

Astragalus argaeus is an endemic plant species that is under critical risk of extinction. Here we investigated its population census, breeding system and reproductive success to determine the main factors affecting restricted distribution of this species. According to the results from pollination experiments, A. argaeus was autogamous but benefit f...

It was hypothesized that multiple environmental factors influence distribution and abundance of plant species in different vegetation layers of the forest ecosystem=. Here, we have assessed plant diversity, abundance and its relationship with multiple factors through an integrative modeling approach. To substantiate or negate our hypothesis, Quadra...

Professional competence is a necessary component of a person's professionalism in any area. The aim of the research is the formation of the professional activity of a future competitive specialist in the educational process of universities for the system-structural organization of professional training of biology students. The analysis of a wide ra...

Strange samples of Sabulina found in the ISTO herbarium were recollected and then compared with herbarium material of related species. It was determined that the most similar species was Sabulina gracilis. Both were compared with molecular and morphological methods. As a result, it was decided that the interesting specimens represented a new specie...

Abstract: In this study, Scabiosa lucida Vill. collected from the Eastern Black Sea region is determined as a new record for the Flora of Turkey. In addition to the description of the species, its typification, diagnostic characters, photographs, and distribution map are given. With the addition of this record, the number of taxa of the Scabiosa ge...

Teucrium L. is a well-known and cosmopolitan genus of the Lamiaceae family. In Turkey, the genus is represented by 36 species (48 taxa). Teucrium Sect. Teucrium that this study focuses on comprises around 30 species worldwide and is mainly distributed in countries of the Mediterranean Basin. With 11 species (14 taxa), it is the second-largest secti...

Since historical buildings are living mirrors of the past, it is very important to preserve and transfer them to future generations. In this study, plants growing on the walls of Alanya Castle were identified and the damages that these plants gave to the historical construction and the precautions to be taken to prevent these damages were emphasize...

The genus Sabulina is represented by 26 taxa in Turkey. Some interesting specimens belonging to the genus, the main distribution area of which is the Mediterranean phytogeographical region, were collected in Erzurum province. These newly collected specimens and Sabulina rimarum var. rimarum were compared with each other in terms of their general mo...

The genus Minuartiella comprises four species distributed in the E-Mediterranean region and SW-Asia. Some interesting specimens belonging to the genus where collected from Burdur province (Turkey). On the basis of macro- and micromprhological analyses, as well as molecular data, a new species—Minuartiella serpentinicola sp. nov.—and a new combinati...

Ecological niche models (ENMs) provide information to assess the effects of environmental and climatic conditions on species distribution. The purpose of this study was to predict the impact of climate change on a critically endangered species, Campanula yaltirikii H.Duman. It is a local endemic chasmophyte from Mt Çığlıkara (Antalya, Turkey), rest...

The aerial parts of Helichrysum noeanum Boiss. and H. chionophilum Boiss. et Balansa were hydrodistilled for 3 h using a Clevenger-type apparatus. The essential oils were analyzed by GC-FID and GC-MS, simultaneously. The main constituents were identified as hexadecanoic acid (25.3%), dodecanoic acid (17.8%), tetradecanoic acid (13.7%), and decanoic...

The genus Minuartia is represented in Turkey by 34 taxa. Some interesting specimens were collected from Antalya province, and examined. These specimens resemble Minuartia meyeri, and M. multinervis from which differ by characters (macro-, and micromorphological) of inflorescence, alar pedicels, petals, sepals, capsules and seeds. Moreover, by using...

Objective: In this study, biological property of Origanum minutiflorum O. Schwarz and P. H. Davis (Lamiaceae) was evaluated. Methods: The total phenolic and flavonoid amount were detected using Folin-Ciocalteu and aluminum chloride colorimetric assays. The antioxidant activity was assayed with phosphomolybdenum, 2,2- diphenyl-1- picrylhydrazyl radi...

Astragalus argaeus is a critically endangered endemic species growing only on Erciyes Mountain in Kayseri, Turkey. In this study, morphology, anatomy, ecology, pollen and seed morphology and karyology of this species were investigated. The previous description of the species has been expanded and amended. Anatomically, cross-sections of root, stem...

Astragalus argaeus is critically endangered endemic species growing only on Erciyes Mountain in Kayseri. Inter simple sequence repeat (ISSR) markers were chosen to detect the genetic diversity in four populations of A. argaeus. Ten primers were used to assess the diversity among 96 genotypes collected from the four localities in Erciyes Mountain. A...

Ekolojik niş modellemeleri (ENM) son yıllarda koruma planlamasının önemli bir parçası olmuştur. Ekonomik önemi olan türlerin iklim değişikliğinden nasıl etkileneceğinin belirlenmesi bu türlerin sürdürülebilir kullanımının planlanabilmesi için büyük önem taşımaktadır. Türlerin GPS kayıtları ile bu alanlara ait çevresel değişkenlerin dijital katmanla...

Many of the plants found in serpentine areas are endemics and they may accumulate Ni at high concentration. High accumulation of Cr is rare, or in some views, never properly demonstrated. Generally, a very small proportion of any serpentine flora shows high accumulation of Ni, in some serpentine areas Ni accumulators are completely absent. There ar...

Heavy metal air pollution is an important environmental problem. One of the methods used to monitor pollution in air is the method of transplanting lichen samples by the "bag technique". In this study, Pseudevernia furfuracea was used as a bioindicator to determine the heavy metal level in the air of Çorum and to generate an air pollution map of th...

Centaurea amaena is an endemic plant species that is under critical risk of extinction and was known from only one population in Kayseri, Turkey. During our research another locality was found at about 15 km distance from the first known population. In this study, the population pattern of this species and its distribution, the reasons for its narr...

Objective: The aim of study was to investigate anticancer effect of Viburnum opulus (VO) on Ehrlich ascites carcinoma (EAC) bearing mice that treated with different concentrations of VO. Materials and methods: For tumor transplantation; mice were inoculated with 1 × 106EAC cells intraperitoneally and than divided into five groups (n = 9). Two ho...

Samples of Solanum tuberosum L. and soils were collected in 2013 from roadside, centrical, rural , secondary roads and control area of five locations Derinkuyu, Kaymaklı, Çardak, Mazı, Zile in Nevşehir. In this study, Cd, Cr, Cu, Ni, Pb and Zn accumulation in the collected soil samples was determined by ICP-OES equipment. The lowest and the highest...

Questions Does the vegetation composition of the forests of Nandiar Valley correlate with climatic, topographic and edaphic variables? Is it possible to identify plant communities through indicator species in relation to environmental gradients? Can this approach of classification and ordination will be helpful for conservation planning? Location...

Aim of the Study: Serpentine plants are important genetic resources used in the treatment of heavy metals in polluted environments. These plants grow in nickel and chromium-rich serpentine soils and have a high accumulation of metal (>1000 mg kg-1) in aerial parts, which are called hyperaccumulators. There are about 500 hyperaccumulator plant speci...

Mixed air pollutants are considered a major cause of damage in living organisms. Air pollution and associated heavy metal pollution is a serious environmental problem. One of the methods used to monitor heavy metal pollution is the method of transplanting lichen samples by the ‘bag technique’. Objective :The objective of this study was to determine...

Peynir yapımında bitkilerin kullanımı çok eskilere dayanmaktadır. Halk arasında bitkiler bazen sütü mayalamak için kullanıldığı gibi bazen de peynirin daha uzun süre bozulmadan kalması için kullanılmaktadır. Çalışmamızda Erzincan ilinin Refahiye ilçesine bağlı Yurtbaşı köyünün Kova mezrasındaki tulum peyniri üreticilerinden tulum peynirinin ve maya...

Abstract Most of the plants found in seıpentine areas are endemics and they may accumulate Ni and Cr at high rates. There are approximately 500 hyperaccumulator plant species found on earth, 360 of them are Ni hyperaccumulators. These plants are valuable resources for emerging phytoremediation. In the present study, 20 different Brassicaceae member...

Objective: The present study aimed to compare the polyphenol content, total phenolic, total flavonoid, antioxidant and antimicrobial activity of the extracts obtained from Centaurea amaena Boiss. & Balansa and Centaurea aksoyi Hamzaoğlu & Budak. Methods: Both species were subjected to maceration, Soxhlet and ultrasonication extractions with meth...

Objectives In vitro biological activities of methanolic extracts of five Turanecio species have been studied. Materials and Methods The phenolic compositions of the extracts were evaluated by the Folin- Ciocalteu assay and by HPLC analysis. Antioxidant activities were determined with two in vitro assays namely, DPPH (2,2-diphenyl-1-picrylhydrazyl)...

Although wild species, landraces and species diversity play an important role in global food security and are necessary for food safety and nutrition, they are very rarely included in daily diets. The "Biodiversity for Food and Nutrition" project, which aims to ensure sustainable use of agricultural biodiversity, was carried out in three pilot site...

Türkiye halk ilaçları yönünden oldukça zengin kaynaklara sahiptir. Eski çağlardan beri bitkiler ilaç, gıda, parfümeri ve kozmetik gibi farklı alanlarda kullanılmaktadır. Bu çalışmada Gazipaşa ilçe pazarında satılan ve halk tarafından değişik amaçlarda kullanılan bazı bitkilerin, yöresel adları ve kullanım amaçları belirlenmiştir. 2015-2016 yılların...

Anatomical, palynological, karyological and morphological seed characters of Silene brevicalyx and S. ozyurtii (Caryophyllaceae) were investigated for the first time. S. brevicalyx grows on serpentine rocky slopes and open forest in Muğla province (southwestern Turkey), while S. ozyurtii is an East Mediterranean element growing on serpentine stony...

In this study, the effects of irrigation water on vegetables were analysed. Samples that we analysed were pepper (Capsicum annuum L.), tomatoes (Solanum lycopersicum L.), and eggplant (Solanum melongena L.) were raised using running water and river water and collected from both normal land and riverside soils. After pre-treating the collected sampl...

The purpose of the study is to compare the alliance groups determined by Braun Blanquet method with the groups of TWINSPAN and Cluster methods. Cluster analysis can confirm many of the alliance based on Braun Blanquet method. Howewer, TWINSPAN confirms all aliences upto100 %. TWINSPAN, a objective method at the same time distinguishes the groups li...

Dianthus multiflorus from Gazipasa (Antalya), south Anatolia (Turkey), is described as a new annual species with verrucose calyx. The morphological differences from the species within the same group with D. multiflorus, which are D. aydogdui, D. cyri and D. tripunctatus, are discussed. The International Union for Conservation of Nature (IUCN) threa...

The aim of this study was to investigate the some trace mineral values on hoof in cows with hoof disease and comparison with healthy ones. Twenty-three Holstein dairy cows (hoof disease group (HD, 18 cases); control group (C, 5 cases) were studied. Determinations of Pb, Fe, Ni, Zn, Cd, Cu and Mn in the samples were carried out by inductively couple...

C. aksoyi Türkiye florasında bulunan endemik bir bitki türüdür. Bu çalışmada C. aksoyi’nin metanollü ekstresinin antioksidan aktivitesi fosfomolibdenyum ve DPPH serbest radikal süpürücü aktivite olmak üzere iki farklı yöntemle araştırılmıştır. Fosfomolibdenyum yönteminde metanollü ekstrenin antioksidan aktivitesi 135.38 ± 0.1 mg askorbik asit g-1ek...

The antioxidant activities of methanol (ME), ethanol (EE), water (WE) and ethyl acetate (EAE) extracts of four Inula helenium L. taxa (I. helenium ssp. orygalis (Boiss.) Grierson, I. helenium ssp. pseudohelenium Grierson, I. helenium ssp. turcarasemosa Grierson and I. helenium ssp. vanensis Grierson) were investigated. The phosphomolybdenum assay,...

The present study was conducted to investigate total phenolic contents, antioxidant and antimicrobial activities of four Senecio L. (Asteraceae). The in vitro antioxidant activities of extracts were evaluated with different antioxidant testing systems. Their antioxidant activities were assessed by phosphomolybdenum reduction, DPPH and β-carotene bl...

Giriş: Tohum çimlenmesi, bitkilerin yaşam döngülerindeki en önemli evrelerden bir tanesidir. Çimlenme sıcaklık, ışık, oksijen, su, doğal büyüme inhibitörleri vb. birçok faktör tarafından kontrol edilir. Sıcaklık, tohumların çimlenme davranışını etkileyen en önemli faktörlerden biridir. Her bir tohumun çimlenebildiği minimum, optimum ve maksimum sıc...

In the era of current industrial and civil development, everyone is expressing a deep concern about the problem of environmental pollution. The majority of the global community has a vested interest in supporting and sustaining any move for the protection of environment. In the greater part of the last century it was the fast pace of industrializat...

During the taxonomic revision of the Turkish Dianthus species, specimens collected from Bilecik, Seben (Bolu), and Nallıhan (Ankara) were discovered that represent a new species. Its description, images, chorology, ecology, and threat category are provided. It was compared with a closely related species, Dianthus zonatus, and differences are based...

Some morphological, anatomical, palynological and karyological features of Lamium multifidum and L. orientale (Lamiaceae) naturally occurring in Turkey have been studied. Additional information was added to the previous description of these species. Anatomically, both L. multifidum and L. orientale had an annual taproot, stems quadrangular in cross...

Abstract— The presence of Dianthus roseoluteus Velen. species in Turkey is based on specimens collected from Antalya province. After the publication of Flora of Turkey, many specimens have been collected from Thrace (Kırklareli and Edirne provinces) that belong to this species. A comparison of the specimens collected from Antalya and Thrace reveale...

Serpentine (ultramafic) soils are generally deficient in essential plant nutrients such as phosphorus (P), potassium (K) and calcium (Ca) and often also have elevated concentrations of toxic trace elements such as, for example, nickel (Ni), chromium (Cr) and manganese (Mn). However, some serpentine areas have a species-rich plant cover, often with...

Wetlands have been proposed as sites for the phytoremediation of metals. The fate of metals within plant tissues is a critical issue for the effectiveness of this process. This study was intended to test the hypothesis that nutrient enrichment (P, NO3−-N and SO42−) enhances the metal tolerance and biological responses of floating macrophytes. To te...

The demand for energy is rapidly increasing to fulfill the need of the rapidly increasing human population. The production of GREEN ENERGY is a dream of human kind. Despite the discovery of renewable sources of energy such as hydroelectric, wind and solar energy, use of thermal power plants powered by oil, coal and gas is vital to run the economy o...

In the framework of a revision of Turkish Dianthus, specimens collected from Kızıldağ (Derebucak, Konya) are described as a new species. The new species is named as Dianthus serpentinus Hamzaoğlu sp. nov., and a description, images, chorology and ecology, and threat category are given. It is compared with the closely related D. acrochlorus, based o...

Tarihi yapılar medeniyetlerin mirası olarak bırakılan önemli kültür varlıklarıdır. Antalya ilimizde birçok medeniyetin eseri cami, türbe, saat kulesi, medrese, kümbet, hamam, kale, eski yapılar gibi kültür varlıkları yönünden çok zengindir. Mart-Haziran 2014 tarihleri arasında Antalya şehir merkezinde bulunan tarihi yapılar üzerinde bulunan bitkile...

Objective The phenolic components and biological activity of nine Senecio species growing in Turkey were investigated. Methods Senecio species were extracted with methanol. The content of total phenols was determined using Folin-Ciocalteu method, while individual phenolic acids and flavonoids were detected using HPLC analysis. Also, to determine th...

Previous studies have shown that salicylates can change the ion permeability of root cells. Therefore the possible effects of exogenous salicylate application on lead (Pb) and copper (Cu) accumulation and its protective role against DNA damage due to metal exposure in Lemna gibba were studied. L. gibba was exposed to 5, 10, and 25 microM Pb and Cu...

The extract obtained from Heracleum argaeum Boiss. & Bal. (Apiaceae) has been investigated for its total antioxidant capacity, inhibition of the bleaching of the β-carotene–linoleic acid emulsion and scavenging capacity on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. In addition to the antioxidant activity of this plant, the total phenolic and fla...

Zwackhiomyces turcicus is described as new from the thallus of Physcia magnussonii from southern Turkey. The new species produces one of the largest ascomata in the genus and is easily differentiated from Z. physciicola (described from Physcia caesia) by its larger verruculose ascospores and thinner interascal filaments.

Helichrysum plicatum DC. subsp. plicatum (Asteraceae), (common name; everlasting) is a medicinal plant and natural product. For centuries, it has been used as tea in Turkey because of its medicinal properties. There are few reports in literature about genotoxic effects of this plant. The aim of this work is to evaluate the genotoxic and antimitotic...

In this study, we determined the heavy metal content (Cd, Cr, Cu, Mn, Ni, Pb and Zn) in the soils and different organs of Asphodelus aestivus Brot. (Walter). from degraded areas in the Mediterranean environment from Bursa, Turkey. The last degradation stage of ecosystems in the east Mediterranean Basin is dominated by this species. Soils and differ...

In this study, we determined the heavy metal content (Cd, Cr, Cu, Mn, Ni, Pb and Zn) in the soils and different organs of Asphodelus aestivus Brot. (Walter). from degraded areas in the Mediterranean environment from Bursa, Turkey. The last degradation stage of ecosystems in the east Mediterranean Basin is dominated by this species. Soils and differ...

The lichen and lichenicolous fungi of Gevne Valley in the provinces of Konya and Antalya are presented. From 47 localities, 215 lichen and 18 lichenicolous fungi are reported for a total 233 infrageneric taxa. Four taxa are new records for Turkey: Lecanora flowersiana H. Magn., L. invadens H. Magn., Psora cerebriformis W.A. Weber, and Rinodina colo...

The present study was conducted to evaluate the antioxidant and antimicrobial activities of methanol extracts of Anthemis fumariifolia and Anthemis cretica subsp. argaea, which are commonly used in Turkish folk medicine. The total phenolic and total flavonoid contents in the extracts were determined. The antioxidant activities of the extracts were...

The methanolic extracts, infusions, decoctions and hydrosols of six plants were investigated for their total phenolic contents, antioxidant and antimicrobial activities: Mentha piperita (Peppermint), Thymus vulgaris (thyme), Melissa officinalis (lemon balm), Ocimum basilicum (basil), Rosmarinus officinalis (rosemary) and Salvia officinalis (sage) (...

Thymus revolutus Celak (Lamiaceae) is an endemic species in Turkey. Cyclotrichium origanifolium (Labill.) Manden & Scheng (Lamiaceae) has been widely used as a flavoring agent in soups and salads, and herbal tea in Turkey. The essential oil (EO) components, antioxidant and antimicrobial activities of the extracts and EOs of T. revolutus and C. orig...

Centaurea amaena Boiss. & Balansa included in the Phalolepis section of the Compositae (Asteraceae) family is an endemic species that is under critical risk of extinction. The morphological, anatomical, palynological, karyological and autecological features have been studied in this study. In accordance with the new observations, additional informa...

The present study was conducted to evaluate the phenolic contents, antioxidant and antimicrobial activities of methanol extract (ME), ethanol extract, water extract (WE) and essential oil of Thymus cappadocicus Boiss. The essential oil composition of a hydrodistilled essential oil of T. cappadocicus was analyzed by a gas chromatography/mass spectro...

ZET Bu araştırma Nevşehir il sınırları içerisinde ve İran-Turan fitocoğrafya bölgesinde yer alan Hodul Dağı'nın (1949 m) ve yakın çevresinin florasını içermektedir. Ekim-2008 ve Ağustos-2010 yılları arasında vejetasyon periyodunda belirli aralıklarla yapılan arazi çalışmalarında toplanan 1218 bitki örneğinin değerlendirilmesi sonucu; 63 familyaya a...

The methanolic extracts of 16 Helichrysum species were investigated for their in vitro antioxidant, radical scavenging and antimicrobial activities. All the extracts showed strong antioxidant and radical scavenging activity. The highest total antioxidant capacity as ascorbic acid equivalents (AAE) of 194.64 mg/g dry extract was obtained for Helichr...