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Antimicrobial activities of some mushrooms in Turkey
(TAYLOR & FRANCIS LTD, 2013) Dogan, Hasan Huseyin; Duman, Rustem; Ozkalp, Birol; Aydin, Sema
Context: Terfezia boudieri Chatin (Pezizaceae), Agaricus brunnescens Peck (Agaricaceae) and Lactarius vellereus (Fr.) Fr. (Russulaceae) are well-known species in Turkey, and are used both for food and traditional medicine. Objective: The powdered fruit bodies of T. boudieri, A. brunnescens and L. vellereus were used to evaluate the antimicrobial activities. Materials and methods: Chloroform, acetone and methanol extracts of T. boudieri, A. brunnescens and L. vellereus were tested for their antimicrobial activities against four Gram-positive bacteria, five Gram-negative bacteria and yeast using a micro-dilution method. Results: The strongest minimum inhibitory concentration (MIC) value observed against the test microorganisms was with the chloroform extract of T. boudieri (MIC 2.4 mu g/mL) against Streptococcus pyogenes. Maximum antimicrobial effects were observed with the acetone extracts of T. boudieri and L. vellereus (MIC 4.8 mu g/mL) against Bacillus subtilis. The strongest antifungal activity was observed with the acetone extracts of T. boudieri (MIC 2.4 mu g/mL) and A. brunnescens (MIC 19.5 mu g/mL) against Candida albicans. The strongest MIC values for all fungal extracts were observed between 78 and 2.4 mu g/mL. Discussion and conclusion: Present results demonstrated that these three mushroom species have excellent antimicrobial and antifungal activities, and thus have great potential as a source for natural health products.
Biological activities and DNA interactions of Amanita ovoidea
(TAYLOR & FRANCIS LTD, 2015) Dogan, Hasan Huseyin; Arslan, Emine
Context: Amanita ovoidea (Bull.) Link (Amanitaceae) is a well-known species due to its pleasant aroma and flavor since ancient times in the worldwide. This species is also known in Turkey and people consume it extensively. Objective: To evaluate medicinal importance of A. ovoidea for human health, to explain the effect of mushroom extracts on bacterial DNA, and to find preventive role on bacterial disease. Materials and methods: Chloroform, acetone, and methanol extracts of A. ovoidea were tested for the antimicrobial activities against four Gram-positive bacteria, five Gram-negative bacteria, and yeast using a micro-dilution method. In addition, DNA binding, DNA cleavage activity, and restriction enzyme digestion of the methanol extract of A. ovoidea were examined at different concentrations (40.000-78.125 mu g/mL). Results: The highest minimum inhibitory concentration (MIC) value observed against the test micro-organisms was with the chloroform extract (MIC 19.5 mg/mL concentration) against Candida albicans. Other highest antimicrobial effects observed against the test micro-organisms were with the methanol extracts against Bacillus subtilis, Staphylococcus aureus, Listeria monocytogenes, Streptococcus pyogenes, Candida albicans, Klebsiella pneumoniae, Proteus vulgaris, and Salmonella enteritidis (MICs, 78 mu g/mL concentrations). All concentrations reduced the mobility of plasmid DNA. BamHI and HindIII targeted specially to supercoils and cut them. Amanita ovoidea extract prevented cutting with HindIII by binding especially to the AA region in open circular DNA. Discussion and conclusion: Present results demonstrated that A. ovoidea has excellent antimicrobial and antifungal activities by its DNA interaction activity on pBR322.
Cryptomarasmius corbariensis (Physalacriaceae, Agaricales) in Turkey with first molecular data on the species from Eurasia
(GEBRUDER BORNTRAEGER, 2018) Bozok, Fuat; Taskin, Hatira; Buyukalaca, Saadet; Dogan, Hasan Huseyin; Assyov, Boris
Cryptomarasmius corbariensis (Roum.) T.S.Jenkinson & Desjardin, a species confined primarily to litter of olive trees, is recorded for the first time from Asia and Turkey, based on identification by ITS sequences and morphological characters. Description and illustrations are included. An overview of the distribution is provided and briefly discussed with emphasis on the possibly wider extent than currently known.
CYTOTOXIC AND ANTIVIRAL ACTIVITY OF RIBES UVA CRISPA LINN. AND RIBES MULTIFLORUM KIT. EX ROMER AND SCHULTES EXTRACTS
(INT JOURNAL PHARMACEUTICAL SCIENCES & RESEARCH, 2018) Duman, Rustem; Dogan, Hasan Huseyin; Dinc, Muhittin; Tuncer, Pinar
To find new antiviral agents from natural sources, methanol and aqueous extracts of leaves and fruits of Ribes uva crispa and Ribes multiflorum naturally grown in Turkey were investigated as in vitro to reveal their antiviral activities against Herpes simplex virus type 1. All experiments were performed in 96-well plates and results were measured with XTT-based colorimetric assay. Results demonstrated that all extracts have no cytotoxic effect on vero cells at 10000 mu g/mL, while they also exhibited anti-HSV-1 activity with different percentages of protection (varying between 2.65% - 50.40%) in 10000 mu g/mL which was at the highest concentration in vero cells. 50% effective concentrations (EC50) of the extracts which were determined having percentage of protection against HSV-1 at concentrations lower than 10000 mu g/mL were calculated using GraphPad Prism Version 5.03 statistics program with non-linear regression analysis. These extracts were determined to have EC50 values ranging between 9710 - 70600 mu g/mL and selectivity index (SI) are ranging between 0.14 - 1.03. On the basis of these results we believe that it would be worthwhile expanding these studies to include additional species of Turkish plants.
DETERMINATION OF ANTIMICROBIAL EFFECT, ANTIOXIDANT ACTIVITY AND PHENOLIC CONTENTS OF DESERT TRUFFLE IN TURKEY
(AFRICAN NETWORKS ETHNOMEDICINES, 2013) Dogan, Hasan Huseyin; Aydin, Sema
Terfezia boudieri Chatin (Scop.) Pers., is a famous macrofungus in the world as well as in Turkey for its pleasant aroma and flavour. People believe that this mushroom has some medicinal properties. Therefore, it is consumed as food and for medicinal purposes. Chloroform, acetone and methanol extracts of T. boudieri were tested to reveal its antimicrobial activity against four Gram-positive and five Gram-negative bacteria, and one yeast using a micro dilution method. In this study, the highest minimum inhibitory concentration (MIC) value was observed with the acetone extract (MIC, 4.8 mu g/mL) against Candida albicans. Maximum antimicrobial effect was also determined with the acetone extract (MIC, 39-78 mu g/mL). The scavenging effect of T. boudieri on 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radicals was measured as 0.031 mg/mL at 5 mg/mL concentration, and its reducing power was 0.214 mg/mL at 0.4 mg/mL. In addition, the phenolic contents were determined as follows: the catechin was 20 mg/g, the ferulic acid was 15 mg/g, the p-coumaric acid was 10 mg/g, and the cinnamic acid was 6 mg/g. The results showed that T. boudieri has antimicrobial activity on the gram negative and positive bacteria as well as yeast, and it also has a high antioxidant capacity. Therefore, T. boudieri can be recommended as an important natural food source.
Determination of antioxidant activity of Cantharellus cibarius Fr.
(ASIAN JOURNAL OF CHEMISTRY, 2008) Tekeli, Yener; Dogan, Hasan Huseyin; Uslu, Ufuk
Oxidative stress is a general term used to describe the steady state level of oxidative damage in a cell. It can affect a specific molecule or the entire organism. Reactive oxygen species (ROS), such as free radicals and peroxides exist inherently in all aerobic organisms, Antioxidants have been widely used as food additives to provide protection against oxidative degradation of foods by free radicals. These antioxidants bind and inactivate the free radicals plant: and mushrooms are good antioxidant materials. In present study, antioxidant activity of Cantharellus cibarius Fr. determined. Total phenolic concentration of the extracts was estimated with Folin-Ciocalteu reagent using gallic acid as standard. Free radical scavenging activities were determined based on 1,1-diphenyl-2-picrylhydrazyl radical (DPPH). Results were compared with standard butylated hydroxytoluene and butylated hydroxyanisole.
Determination of fungal diseases, site and stand characteristics in mixed stands in Ilgaz-Yenice forest district, Cankiri, Turkey
(TRIVENI ENTERPRISES, 2009) Oner, Nuri; Dogan, Hasan Huseyin; Ozturk, Celaleddin; Gurer, Meral
Fungal diseases, site and stand characteristics were investigated in Yenice forest sub-district headquarters belonging to Ilgaz forest enterprise. Diseases and wood decaying fungi on fallen and cut tree stumps were determined on scots pine (Pinus sylvestris), crimean pine (P nigra subsp. nigra var.caramanica), and uludag fir (Abies nordmanniana subsp. bommulleriana). Altitude (m), exposure, slope (%), relief, rate of mixture (%) and anthropogenic effects were noted for 56 sample plots which have various stand compositions. Age, breast height diameter (cm), top height (m), crown and bole quality, regeneration quality and development of representative tree species were also recorded into vegetation forms. Yellow witches'broom (Melampsorella caryophyllacearum), which caused drying of uludag fir trees, was determined. Besides, 53 macrafungi species belonging to 3 divisions, 10 orders, 25 families and 36 genera were determined. Some of them cause white and brown decay on living and core wood. The most common parasitic and saprobe fungi are Galerina Ganoderma, Gloeophyllum, Gymnopilus, Hypholoma, Lentinus, Phellinus, Pleurotus, Polyporus and Stereum species in the research area Trichaptum abietinum is also typical wood decay fungi for living or cut fir trees and it is very common in the research area.
Ecological features of Tricholoma anatolicum in Turkey
(ACADEMIC JOURNALS, 2011) Dogan, Hasan Huseyin; Akata, Ilgaz
Tricholoma anatolicum H. H. Dogan & Intini was first published as a new species in 2003, and it is known as "Katran Mantari" in Turkey. It has great importance in trading and is also exported to Japan. However, there is no extensive information on its ecological status. To reveal its features of ecological status, we studied eight different places in Turkey in the years of 2005 and 2009. According to our results, this species makes an ectomycorrhizal association with Cedrus libani trees. The distribution area of the species is Taurus Mountain between 1,400 and 1,700 m elevations from the Mediterranean region. The morphological features of the species are closer to Tricholoma magnivelare (Peck) Redhead than the other members of Matsutake group. Its characteristic features are white to cream-coloured fruiting body, a special odour like tar, different aroma and cyanophilic spores. In general, it grows on well-drained and infertile sandy soil in C. libani forests, which are more than 25 years old. The fruiting period is from October to November and also grows in Mediterranean climate type.
EFFECT OF MORCHELLA CONICA AND FOMES FOMENTARIUS EXTRACTS AGAINST THE HUMAN RESPIRATORY SYNCYTIAL VIRUS IN-VITRO
(INT JOURNAL PHARMACEUTICAL SCIENCES & RESEARCH, 2018) Dogan, Hasan Huseyin; Duman, Rustem; Tuncer, Pinar
Antiviral properties of methanol and aqueous extracts from Morchella conica and Fomes fomentarius were assessed by colorimetric XTT test against human respiratory syncytial virus (HRSV). HEp-2 cell line was used for the cytotoxic and antiviral effects of the extracts. Non-cytotoxic concentrations of methanol and aqueous extracts of M. conica were tested in 50000 to 195 mu g/mL. In contrast, the cytotoxic F. fomentarius methanol and aqueous extracts and Ribavirin were tested at concentrations from 3347-13.1 mu g/mL, 4906.5-19.2 mu g/mL and 86.60-0.30 mu g/mL, respectively. The results showed that aqueous extract of F. fomentarius had strong anti-HRSV activity (EC50 = 358.7 mu g/mL, SI = 27.4) which could be compared with ribavirin (EC50 = 15.6 mu g/mL, SI = 11.1) used as a positive control against HRSV, while other extracts (M. conica methanol extract EC50 = 28055 mu g/mL, SI = >1.8; F. fomentarius methanol extract EC50 = 3000 mu g/mL, SI = 2.2) were found to have weak antiviral activity. As a result, it can be said that aqueous extract of F. fomentarius is worthy of further study as an alternative drugs in order to develop anti RSV.
Evaluation of phenolic compounds, antioxidant activities and fatty acid composition of Amanita ovoidea (Bull.) Link. in Turkey
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2013) Dogan, Hasan Huseyin
Antioxidant capacity of Amanita ovoidea (Bull.) Link. was studied by using the methods of scavenging effect on DPPH radicals, beta-carotene-linoleic acid assay, reducing power and estimation of phenolics. Seven phenolics of A. ovoidea methanolic extract were analysed by high performance liquid chromatography (HPLC), and 3 of them were determined as p-coumaric acid, cinnamic acid and ferulic acid. Additionally, the total phenolic content of A. ovoidea was estimated at 0.53 mg/g concentration. The scavenging effect of A. ovoidea on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals was measured as 36.4% at 0.5 mg/mL, and its reducing power was 0.36 mg/mL at 1.2 mg/mL. IC50 values were determined as 0.79 mg/mL for A. ovoidea, 0.36 mg/mL for BHA and 0.41 mg/mL for BHT. The fatty acids were estimated via the method of gas chromatography analysis; 37 different fatty acids were found in A. ovoidea. Oleic acid (58.8%) was the dominant component, and the other major components were linoleic acid (18%), palmitic acid (15.8%) and stearic acid (5.4%). The results demonstrated that A. ovoidea shows antioxidant activity and contains a number of fatty acids important for human health. A. ovoidea can thus be recommended as a source of natural antioxidants and fatty acids. (C) 2013 Elsevier Inc. All rights reserved.
Four new morel (Morchella) species in the elata subclade (M. sect. Distantes) from Turkey
(MYCOTAXON LTD, 2016) Taskin, Hatira; Dogan, Hasan Huseyin; Buyukalaca, Saadet; Clowez, Philippe; Moreau, Pierre-Arthur; O'Donnell, Kerry
Four Turkish Morchella species identified in published multilocus molecular phylogenetic analyses are described here as new, using detailed macro-and microscopic data: M. mediterraneensis (Mel-27), M. fekeensis (Mel-28), M. magnispora (Mel-29), and M. conifericola (Mel-32). A distribution map of morels identified to date in Turkey is also provided.
Macrofungal diversity associated with the scale-leaf juniper trees, Juniperus excelsa and J. foetidissima, distributed in Turkey
(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2011) Dogan, Hasan Huseyin; Karadelev, Mitko; Isiloglu, Mustafa
In this article, an attempt has been made to establish the qualitative composition of macromycetes in the communities of scale-leaf juniper, Juniperus excelsa M.Bieb. and J. foetidissima Wind., distributed in Turkey. A total of 127 species of macrofungi were registered, 2 belonging to Ascomycota and 125 to Basidiomycota. Of those, 69 species were collected in Juniperus excelsa stands, 23 in J. foetidissima stands, and 35 species in both juniper stands. The ecologic status for the fungal species is as follows: 30 lignicolous and 39 terricolous in J. excelsa stands, 19 lignicolous and 4 terricolous in J. foetidissima, and 31 lignicolous and 4 terricolous in both stands. For Turkey, 23 taxa were new, and 5 of them were new at genus level. The new genera were Pyrenopeziza Fuckel, Amyloathelia Hjortstam & Ryvarden, Byssoporia M.J.Larsen & Zak, Globulicium Hjortstam, and Subulicium Hjortstam & Ryvarden.
Macrofungi distribution of Mut province in Turkey
(PAKISTAN BOTANICAL SOC, 2007) Dogan, Hasan Huseyin; Ozturk, Celaleddin; Kasik, Giyasettin; Aktas, Sinan
Macrofungi samples collected from different localities of Mut province in 1999-2001, particularly in the months of autumn and spring showed the occurrence of 95 species belonging to 46 genera and 28 families. Of these, 11 species belong to Ascomycetes and 84 belong to Basidiomycetes. Distribution and habitat features of identified species are given.
Morchella galilaea, an autumn species from Turkey
(MYCOTAXON LTD, 2015) Taskin, Hatira; Dogan, Hasan Huseyin; Buyukalaca, Saadet
Morchella specimens collected during the autumn seasons of 2009-12 from Adana Province, Turkey, have been identified by DNA sequencing as representatives of Morchella galilaea. The macro- and micromorphology, phylogeny, ecology, and fruiting phenology of the Turkish material are evaluated.
Multiple Antioxidant and Bioherbicidal Assays of the Edible Mushroom Species "Ramaria flava" in the Amanos Mountains
(BIOINTERFACE RESEARCH APPLIED CHEMISTRY, 2016) Bozdogan, Adnan; Eker, Tulin; Bozok, Fuat; Ulukanli, Zeynep; Dogan, Hasan Huseyin; Buyukalaca, Saadet
The phenolic content (TPC) and flavonoids (TFC) of the methanol (MeOH) extract of the edible mushroom species 'Ramaria flava' in the native flora of Amanos Mountains were 89.0 and 0.97 mg/kg, respectively. beta-carotene content (TCC) (0.47 mg 100/mL) was higher than that of the lycopene (TLC) (0.19 mg/100 mL). Two-fold dilutions ranging from 1.25 to 5.0 mg/mL of the extract were used for antioxidant assays. The most significant activities were 94.17% for DPPH (2-diphenyl-1-picrylhydrazyl), 64.25% for NO (nitric oxide) scavenging, 2.43 Abs for reducing power (RP) and 1.94 Fe+2 mmol/L for Ferric-reducing antioxidant power (FRAP) assays at the upper concentration, respectively. The most prominent result for hydrogen peroxide (H2O2) scavenging assay at the following concentrations; 0.0156 to 0.125 mg/mL was 71.68% at 0.125 mg/mL. In the bioherbicidal assay, MeOH extract at 25 mg/mL inhibited the germination (16%), radicle growth (44%), plumule growth (52%), total chlorophyll a and b (78 and 88%), and carotenoid (70%) of Cucumis sativus. To conclude, FRAP, NO, and H2O2 scavenging activities of the MeOH extract of R. flava is the first report.
New Additions to Turkish Gasteroid Fungi
(KASTAMONU UNIV, ORMAN FAK, 2015) Dogan, Hasan Huseyin; Akata, Ilgaz
Three gasteroid fungi species "Gautieria morchelliformis Vittad., Hysterangium stoloniferum Tul. & C. Tul. and Gymnomyces mistiformis (Mattir.) T. Lebel & Trappe" were reported for the first time from Turkey. Short descriptions, ecology, distribution and photographs of fruitbodies and micrographs of spores were given in the text.
New macrofungi records from Turkey and macrofungal diversity of Pozanti-Adana
(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2016) Dogan, Hasan Huseyin; Kurt, Fevzi
The present study reports on macrofungi species collected from 2003 to 2012 in Pozanti. In the field and during laboratory studies, 157 taxa belonging to 2 divisions and 51 families were identified. Among them, 8 families and 12 taxa belong to Ascomycota, and 43 families and 145 taxa belong to Basidiomycota. Moreover, 10 taxa-Dumontinia tuberosa, Lycoperdon lambinonii, Conocybe mesospora, Pholiotina striipes, Hebeloma sordidum, Antrodia ramentacea, Leucogyrophana romellii, Diplomitoporus flavescens, Alutaceodontia alutacea, and Tulasnella violea-were found in the Turkish mycobiota for the first time.
New records of corticioid fungi in Turkey
(MYCOTAXON LTD, 2011) Dogan, Hasan Huseyin; Karadelev, Mitko; Rusevska, Katerina; Aktas, Sinan
A recent survey of wood-inhabiting Basidiomycota in Turkey has added 10 corticioids to the Turkish mycobiota; included are first records of the genera Boidinia and Leptosporomyces in the country. All collected species are described and their distribution in Turkey is summarized. Microscopical line-drawings and ecological notes are provided.
A new species of Barssia (Ascomycota, Helvellaceae) from Turkey
(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2018) Dogan, Hasan Huseyin; Bozok, Fuat; Taskin, Hatira
A new species of the genus Barssia was identified from Turkey using both morphological and phylogenetic analysis of the ribosomal internal transcribed spacer region (ITS rDNA) and nuclear ribosomal large subunit (LSU rDNA) gene sequences. Macroscopic and microscopic features of the fresh samples were photographed and a diagnostic key of the genus Barssia was built considering characteristics of known species.
A new Stemonitis species from Turkey
(MYCOTAXON LTD, 2014) Dogan, Hasan Huseyin; Eroglu, Gonul
Stemonitis mediterraneensis is described herein as a new species of myxomycete from material collected on a rotten wood remnant of Abies cilicica subsp. cilicica from Adana-Aladag in Turkey. The new species is characterized by rough warty pale brownish to yellowish-brown spores and smooth capillitia lacking spines.

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