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    Airborne microfungus flora determined in the different units of the department of Tulay Aktas Oncology Hospital, Ege University
    (Parlar Scientific Publications, 2015) Gunyar O.A.; Haliki-Uztan A.; Ates M.; Yoltas A.; Goker E.
    Recently, there has been a dramatic increase in the prevalence of nosocomial fungal infections. Especially with the increase in the number of immunosuppressed patients, rare fungal pathogens which were difficult to detect in the past are now frequently isolated. In this study, the level of endogenous airborne fungal concentrations and the types of fungi were determined at Ege University, Faculty of Medicine, Tulay Aktas Oncology Hospital. For this purpose, air samples were collected at 34 different locations monthly during six months with the Merck MAS 100 air sampler. As a result, a total of 5590 fungal colonies in 204 petri dishes were counted. Thirty-two fungal species belonging to 10 genera were identified. The most prevalent genera were the common moulds; Aspergillus (3.91±1.01), Penicillium (16.08±3.10), Cladosporium (40.82±4.15) and Altemaria (7.51±1.82). The results revealed that the most common genus was Cladosporium. Fungal concentration levels in different parts of the stem cell transplantation department ranged from 0 to 340 cfu/m3. In other units of the hospital, fungal load was found to be between 0 and 45600 cfu/m3. When the fungal density of the stem cell transplantation department and that of the other units were compared, fungal density of the stem cell transplantation department was found to be significantly lower (p = 0.000 <0.05). The highest values in our study were determined during the 5th month of this study, because natural gas pipelines were installed around the hospital in this month. In this study, we aimed to emphasize the importance of monitoring the presence of airborne fungal flora, particularly Aspergillus spp, in the departments of a hospital where patients of high-risk groups are hospitalized.
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    Isolation and identification of entomopathogenic fungi Beauveria Bassiana from Turkey
    (Parlar Scientific Publications, 2016) Uztan A.H.; Gunyar O.A.; Yoltas A.; Keskin N.
    The control of the agricultural pests is crucial for commercial products. There is a growing interest for biological control of these pests and one of the most effective and safe biocontrol agents is Beauveria bassiana (Balsamo-Crivelli) Vuillemin, which is an entomopathogenic fungus. The soil environment is a significant resource for entomopathogenic fungi. In this study the diversity and distribution of entomopathogenic fungus Beauveria bassiana (Bals.-Criv.) Vuill. was assessed throughout an extensive soil survey in Turkey carried out during 2013 and 2014. Soil samples from the seven regions of Turkey were taken and Beauveria spp. isolates were obtained from six of these regions, with 32 positive sites out of 150 sites sampled. The isolates were identified as Beauveria bassiana based on phenotypic and molecular data. Beauveria bassiana was isolated from the European (Marmara) as well as the Asiatic peninsula (Anatolia) of Turkey.
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    Weighted network analysis of out-group candidates in a phylogenetic tree of B. Bassiana
    (Parlar Scientific Publications, 2017) Haliki E.; Yoltas A.; Abaci O.; Haliki-Uztan A.
    The investigation of phylogenetic tree dendrograms in the concept of weighted networks is essential not only for the analysis of the sequence homology of strains but also for the importance of strains considered to be nodes of the network. For instance, weighted centrality measures of any phylogenetic tree indicate the lower scores for the out-groups having less homology with the in-group making it considered to be ineffective for a dendrogram design. However biological usages have revealed the case in a different way. Relative to the relevant DNA region, this paper proposes detailed assumptions that the network structure of phylogenetic trees has a great reviewability on a bridge between close and distant out-groups. We demonstrate our computations on a verified phylogenetic tree of the entomopathogenic fungus Beauveria bassiana (Balsamo-Crivelli) Vuillemin, whose diversity and distribution were assessed throughout an extensive soil survey carried out in Turkey during 2013 and 2014. © by PSP.