Pelin S. Çiftçi Türetken

Pelin S. Çiftçi Türetken
Istanbul University · Faculty of Aquatic Sciences

PhD

About

57
Publications
18,412
Reads
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315
Citations
Citations since 2017
16 Research Items
216 Citations
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
Introduction
She is a research assistant in Marine Biology Department of Faculty of Aquatic Sciences at Istanbul University. She completed her bachelor's degree in Faculty of Fisheries at Istanbul University. She graduated with a PhD in marine biology from Istanbul University, Institute of Graduate Studies in Sciences. Her research areas mainly include bacteriology, marine bacterial remediation, resistant bacterial isolates against heavy metals and antibiotics and determination o
Additional affiliations
December 2005 - March 2020
Istanbul University Faculty of Aquatic Sciences
Position
  • Research Assistant

Publications

Publications (57)
Article
Full-text available
The distribution and antibacterial activities of bacteria isolated from fifty-five marine sponge samples collected from the Aegean Sea and the Sea of Marmara were investigated in the period between 2011 and 2013. The antibacterial activities of the methanolic extracts of marine sponge-associated bacteria tested against six pathogenic bacteria: Stap...
Article
Determination of bacteriological diversity in marine ecosystems is of great importance in terms of understanding the functioning of the marine ecosystem, as well as being an indicator of alarm for pollution and sudden changes in marine environments. In this study, we aimed to investigate the composition and metabolic characteristics, relative to va...
Chapter
Full-text available
Son dönemde Marmara Denizi’nde yoğunlukla gözlemlenen; görsel, ekolojik ve ticari yönlerden sebep olduğu olumsuz etkileri nedeniyle kamuoyunun gündemine oturan deniz salyası sadece bugün değil geleceğimizi için de tehlike oluşturuyor. Bu bağlamda Türkiye Bilimler Akademisi Başkanlığı, konusunda uzman bilim insanları bu çevre sorununu değerlendirmel...
Article
Heavy metal and antibiotic-resistant bacteria have potential for environmental bioremediation applications. Resistant bacteria were investigated in sediment and seawater samples taken from the Aegean Sea, Turkey, between 2011 and 2013. Bioindicator bacteria in seawater samples were tested using the membrane filtration technique. The spread plate te...
Article
In aquatic ecosystems, bacteria are known to play an important role in the degradation processes of organic substances and in nutritional regeneration. For this reason, it is important to define the functioning of the marine ecosystem to determine the difference of bacterial metabolic response depending on the variability of environmental Abstract...
Article
Full-text available
Plastic pollution in marine ecosystems is one of the most important study topics in recent years. The toxicity, mobility and long-term persistence characteristics of plastics create risk in ecosystems, biota and human health. In this study, the levels of heterotrophic bacteria attached to the surfaces of commonly used plastic types; polyvinylchlori...
Article
Plastic pollution in marine ecosystems is one of the most important study topics in recent years.The toxicity, mobility and long-term persistence characteristics of plastics create risk in ecosystems, biota and human health. In this study, the levels of heterotrophic bacteria attached to the surfaces of commonly used plastic types; polyvinylchlorid...
Article
In this study, which was conducted to determine the total petroleum hydrocarbon levels, surface water samples were taken from November 2008 to March 2010 from 5 stations determined in Sapanca Lake, which is used intensively for drinking, municipal water and recreational activies. The water samples were extracted by dichloromethane and measured by s...
Article
Full-text available
The Çanakkale Strait, as a part of the Turkish Strait System (TTS), is an important water route in the world which connects the Mediterranean Sea to the Sea of Marmara and hence to the Black Sea via the Istanbul Strait. Due to its peculiar hydrodynamic characteristics, the area offers unique opportunities for researching profiles of bacteria under...
Article
Full-text available
Sapanca Lake is important as a source of drinking water. In this study, we aimed to detect the bacterial quality, the frequency of bacterial antibiotic and heavy metal resistance, and bioindicator bacteria in the water samples taken from Sapanca Lake in the period between 2008 and 2010. The resistance of bacterial isolates to certain antibiotics an...
Article
In this study, the analyses were carried out to determine oil-degradation capacity and oil-resistance levels of bacteria isolated from water surface (0-30 cm) of nine stations of the Sapanca Lake from September of 2008 to May of 2010. Twenty-seven bacteria species belonging three classes and six families total of eighty-five wild bacteria were iden...
Conference Paper
This study aimed to determine Micrococcaceae family members in the water column of Güllük Bay, Aegean Sea, Turkey under the coverage of the project supported by TUBITAK (The Scientific and Technical Research Council of Turkey-Project number:110Y243). The seawater samples collected under aseptic conditions from the surface (0-30 cm), middle (25-33 m...
Conference Paper
In this study, Staphylococcaceae species was investigated in the sea water and sediment samples taken from Güllük Bay, the Aegean Sea, Turkey within the scope of a TUBITAK project (The Scientific and Technical Research Council of Turkey-Project number:110Y243) in the period between May 2011 and February 2013. The seawater samples collected througho...
Article
Full-text available
Abstract. In this study, anthropogenic influences on the natural fresh water sources regarding the levels of indicator bacteria were investigated in the Eastern Anatolian, Turkey. The surface water samples (0–30 cm) were collected seasonally in the period between November 2008 and October 2009. The levels of total and faecal coliform bacteria were...
Conference Paper
Full-text available
ÖZET Deniz süngerleri klinik, endüstriyel ve çevresel alanlarda kullanılabilecek aktif doğal bileşiklerin potansiyel kaynaklar olarak bilinmektedirler. Bu çalışmada TÜBİTAK 114Y690 projesi kapsamında süngerlerin ileri antibakteriyel testleri ve süngerlerden izole edilen epibiyotik bakterilerin moleküler testlerle dorulanması, bakterilerin tekli ve...
Conference Paper
Full-text available
DIVERSITY of BACTERIA ISOLATED from TURKISH MARINE AREAS Gülşen ALTUĞ, Pelin Saliha ÇİFTÇİ TÜRETKEN, Sevan GÜRÜN, Samet KALKAN Istanbul University, Fisheries Faculty, Department of Marine Biology, Istanbul, Turkey galtug@istanbul.edu.tr ABSTRACT Bacterial diversity knowledge is very important in order to understand marine ecosystem functioning,...
Conference Paper
Full-text available
In this study covering by TÜB􀀎TAK (Project Number:114Y690), bacteria isolates which were determined as tolerant against to oil hydrocarbons regarding to different pre-tests results were studied in advanced trials between the years of 2000-2015. Bacterial consortia were prepared after antagonistic tests of single-cultured bacteria which were highly...
Article
Full-text available
Isolation and characterization studies of marine heterotrophic bacteria are important to describe and understand eco-metobolism of the marine environments. In this study, diversity and community structures of the culturable heterotrophic bacteria, metabollicaly active bacteria and bacterial pollution in the coastal and offshore areas of Gökçeada Is...
Article
Full-text available
ABSTRACT:TheDardanelles (Çanakkale Strait) and Bosporus (Istanbul Strait) which haveunique hydrographical characteristics were compared regarding the metabolically active bacteria, culturable heterotrophic bacteria (HPC) and their relation to the nutrients and variable environmental parameters. The samples were taken from various depths ranging fro...
Article
Full-text available
The Dardanelles (Çanakkale Strait) and Bosporus (Istanbul Strait) which have unique hydrographical characteristics were compared regarding the metabolically active bacteria, culturable heterotrophic bacteria (HPC) and their relation to the nutrients and variable environmental parameters. The samples were taken from various depths ranging from 0-30...
Conference Paper
The sediments underlying the oxic, suboxic, and anoxic waters were collected with remotely operated vehicles (ROVs) in the southern Black Sea off Sinop and Ereğli, Turkey during the Nautilus expedition in summer 2011 and 2012. The sediment samples were analyzed to understand microbial diversity of these unique fields using by culture-dependent and...
Conference Paper
Full-text available
In this study the ratio of capsulated bacteria to the total number of bacteria in the surface water samples were investigated in order to determine the number of metabolically active bacteria. The percentages of metabolically active bacteria were compared for the first time in the sea water samples which were taken from northern part of the Aegean...
Conference Paper
The aim of this study was to investigate total and culturable heterotrophic bacteria levels at the sea water samples taken from 19 stations determined around Gökçeada Island, Northern Aegean Sea. The highest total and culturable heterotrophic bacteria level was recorded at St -10 (Cape of Kömür) in summer sampling survey.
Article
Full-text available
The microdiversity and composition of culturable heterotrophic aerobic bacteria were investigated in seawater samples taken from the Sea of Marmara (an important basin between the Mediterranean and the Black Sea) in different time periods throughout 2002– 2010. The bacterial isolates were identified with the automated microidentification system VIT...
Conference Paper
The antimicrobial activity of the methanolic extracts of the 11 unit marine sponge samples belonging to six different species: Sarcotragus sp., Cacospongia scalaris (Schmidt, 1862), Axinella cannabina (Esper, 1794), Ircinia sp., Chondrosia reniformis (Nardo, 1847), Agelas oroides, (Schmidt, 1864) were screened against Gram positive (Staphylococcus...
Article
Full-text available
Two marine areas (the northern Aegean Sea and southern part of the Sea of Marmara, Turkey) which have different trophic and hydrodynamic characteristics were compared regarding diversities of bacteria, phytoplankton, zooplankton, benthos, fish and cetaceans. During the study period (2006–2007), a total of 27 taxa of aerobic heterotrophic mesophilic...
Article
Full-text available
In this study, the counts of indicator bacteria were investigated with the aim of detecting the level of bacteria were carried via the Sakarya River into the Black Sea. The analyses were carried out in the samples of the surface water which were taken from depths between 0-30 cm and 1-3 meters in the Karasu region of the Sakarya River and at the di...
Conference Paper
Full-text available
The most active group with respect to substance cycling is aerobic heterotrophic bacteria (AHB) at the euphotic zone in the marine ecosystem. Bacterial composition may differ according to their exposure to environmental factors in the areas from which they are isolated. In this study two cruises were conducted with R/V YUNUS-S and sea water samples...
Article
Full-text available
The levels of indicator and heterotrophic bacteria (HPC) and the frequency of antibiotic resistant bacteria with respect to the areas from which they were isolated were investigated and compared in the sea water samples taken from the coastal area of the Eastern Mediterranean (Turkey, Syria, Lebanon) and the offshore area (Northern Aegean Sea). Whi...
Article
To investigate whether the use of direct viable count (DVC), quantitative viable count (qDVC), colony-forming units and the contribution of capsule-bearing bacteria to the total number of bacteria and esterase-active bacteria could be used to clearly differentiate viable cells in various trophic status of seawater. Hundred and four marine isolates...
Article
Full-text available
Indicator and some pathogen bacteria were investigated in both samples of Chamelea gallina and Donax trunculus collected from the northern coast of the Sea of Marmara Sea, Tekirdag, Turkey. Studies were carried out monthly from November 2005 to December 2006. The samples of C. gallina and D. trunculus which were collected from natural-growing areas...
Article
Full-text available
Indicator and some pathogen bacteria were investigated in both samples of Chamelea gallina and Donax trunculus collected from the northern coast of the Sea of Marmara Sea, Tekirdag, Turkey. Studies were carried out monthly from November 2005 to December 2006. The samples of C. gallina and D. trunculus which were collected from natural-growing areas...
Article
Full-text available
Akdeniz ve Ege kıyılarında kültür balıkçılıgının yapıldıgı alanlardan alınan deniz suyu örneklerinde fekal koliform, toplam koliform, fekal streptokok düzeyleri ile nitrit ,nitrat, ve fosfat düzeyleri arastırılmıstır. Çalısma süresince, turistik alanlara yakın olan balık çiftliklerinin bu bölgelerle olan olası etkilesimini ortaya koymak amacı ile t...
Article
Oil pollution of the South part of the Aegean Sea and Mediterranean Sea was investigated at 48 stations from the Bozburun Peninsula to İskenderun buy, during 17-28 August 2006. The highly carbon concentration of the samples was determined by UVF by using Iraq crude oil and also chrysene as references materials. The oil pollution in examined sea wat...
Article
Full-text available
The oceanographic characteristics of the Canakkale and Istanbul Straits provide interesting environments for bacteriological studies. In this study bacteriological analyses have been carried out in layers formed as a result of the salinity of the Mediterranean and Black Sea waters. Sea water samples taken from depths varying from 0-30 cm and 10-50...
Article
Full-text available
The frequency of some beta-lactam antibiotics and heavy metal resistance of members of the Enterobacteriaceae family was investigated in the surface water from the Oludeniz Lagoon (the Aegean Sea), the Sea of Marmara, the Golden Horn Estuary and the Istanbul Strait, Turkey. In all selected isolates, the highest resistance was found to Ceftazidim as...

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Projects (3)
Project
The AquaBioTech2021 organizing committee monitor closely this evolving situation related to the COVID-19 Pandemic. Unfortunately, there is still an increasing trend in the number of infected people globally and the vaccination ratio is quite low with the emerging COVID variants. It resulted in unprecedented circumstances for the future and the well-being of our participants is a fundamental priority for us. Thus, the Organizing Committee of the AquaBioTech2021 has come to the difficult decision to hold the symposium online. The virtual Symposium will take place as planned, on October 13-15, 2021. The abstract submission deadline has been postponed to July 1st. Abstracts will follow the usual submission and review processes. The registration will be closed on September 1st. We are looking forward to meeting you at the 2nd Aquatic Biotechnology Symposium, and we hope you will join us. Warm Regards, 2nd Aquatic Biotechnology Symposium Organising Committee https://aquabiotech.istanbul.edu.tr/en
Archived project
This research plans to study the different aspects of the stress impacts on the region, determine the metabolically active bacteria levels struggling against the pollution sources in the region, determine the bacteria level which has developed resistance to heavy metal salts and antibiotics, and to carry out different analyses in order to put forth recommendations. In order to reveal the current bacteriological pollution input to the receiving environment, Fecal Streptococci, Fecal Coliform and Total Coliform analyses are conducted. In addition, measurements of secchi disk, temperature, dissolved oxygen, pH, salinity, total inorganic nitrogen (ammonium nitrogen, nitrite nitrogen, nitrate nitrogen), total phosphor, and chlorophyll-a analyses were carried out in order to determine the existing of water quality in the area. Heterotrophic Mesophilic Aerobic Bacteria counts (HPC: Heterotrophic Plate Count) were carried out to measure the abundance of bacteria in the sediment and the water column (0-30cm surface, bottom point / above sediment). In order to put forth the difference in culturable bacteria and metabolically active bacteria counts, of which the undermining causes with respect to eco-physiological and technical aspects are still under discussion, so as to determine those bacteria which have ecological contributive qualities, EM techniques was utilized. The analyses to detect of pathogen bacteria and bacterial diversity with an aim to define biochemical peculiarities of bacteria and discuss to ecological roles, were carried out using by VITEK2 COMPACT30 system. The levels of antibiotic resistant bacteria isolated from their natural media were detected. The side effects of domestic bacteriological pollution were put forth at a micro level; in addition, the potential threat of antibiotic resistance in the region was identified. Measurements of resistance to antibiotics widely used in treating fish diseases in the region were carried out; tests were performed on bacteria isolated from the natural media. Quantitative levels of iron, zinc, copper, aluminum and lead in the sediment were determined by atomic absorption method; resistance to these heavy metal salts developed by those bacteria isolated from the same habitat were determined via the MIC method. Heavy metal resistant strains were stored to form “bacteria candidates” for the “remediation of areas polluted with heavy metals” research, and to be used in our “adaptive bacteria cultures” research for the purpose of developing adaptations to heavy metals.
Project
Some peculiarities (such as anti-bacterial activities, tolerances against oil hydrocarbons and heavy metal, produces industrially important amines) of bacteria isolated from various marine areas of Turkey were detected with our previous studies at different time periods between 2000 and 2014. This project combined just one title, consists of three parts. The holistic aim of the study is obtain increased knowledge on the applicability of the stocked bacterial isolates with various aim detailed below. 1. In November 2013, we concluded the study of the epibiotic bacteria by isolating the sponges collected by diving in the Sea of Marmara and around Gökçeada (Aegean Sea). Within this project which is supported by TUBITAK (112Y236) we found out that the methanolic extracts of these sponges have anti-bacterial effects. After the qualitative and quantitative analyzes of the methanolic extracts (the relevance of the active substances and chemical properties which determines their structure) we aimed to access to the data that enables the clinical use of the anti-bacterial characteristics. 2. In our previous various tests we determined the bacteria that are resistant to oill hydrocarbons and which are adapted to the higher concentration of oil. The aim is to determine the effect of these single and mixed consortium of isolated bacteria that reduce the oil quantity in the system we are going to found, and to determine ideal conditions (for these isolates) to switch from laboratory-scale production to the product. 3. The aim is to make the adaptation studies to increase activity capacity oriented to metabolic characteristic of some isolates that we predicted for industrial purposes in our previous marine researches in the past 14 years and we stocked at -80 °C, and to prepare the data for converting of the product.