9 results on '"Bozkurt, Taner"'
Search Results
2. Optimizing the In Vitro Propagation of Tea Plants: A Comparative Analysis of Machine Learning Models.
- Author
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Bozkurt, Taner, İnan, Sezen, Dündar, İjlal, Isak, Musab A., and Şimşek, Özhan
- Subjects
PLANT tissue culture ,PLANT micropropagation ,BOTANY ,AGRICULTURE ,PLANT propagation ,MACHINE learning - Abstract
In this study, we refine in vitro propagation techniques for Camellia sinensis using a machine learning approach to ascertain the influence of different shooting and rooting conditions on key growth metrics. This was achieved by applying random forest (RF), XGBoost, and multilayer perceptron (MLP) models to dissect the complexities of micropropagation and rooting processes. The research unveiled significant disparities in growth metrics under varying media conditions, underscoring the profound impact of media composition on plant development. The meticulous statistical analysis, employing ANOVA, highlighted statistically significant differences in growth metrics, indicating the critical role of media composition in optimizing growth conditions. Methodologically, the study utilized explants from 2–3-year-old tea plants, which underwent sterilization before being introduced to two distinct culture media for their micropropagation and rooting phases. Statistical analyses were conducted to evaluate the differences in growth outcomes between media, while machine learning models were employed to predict the efficacy of micropropagation and rooting based on various growth regulators. This approach allowed for a comprehensive evaluation of the model's performance in simulating plant growth under different conditions, leveraging metrics like R
2 , RMSE, and MAE. The findings from this study significantly advance the understanding of tea plant micropropagation, highlighting the utility of machine learning models in agricultural optimization. This research contributes to enhancing micropropagation strategies for the tea plant and exemplifies the transformative potential of integrating machine learning into plant science, paving the way for improved agricultural and horticultural practices. This interdisciplinary approach offers a novel perspective on optimizing in vitro propagation processes, contributing substantially to plant tissue culture and biotechnology. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
3. Leveraging machine learning to unravel the impact of cadmium stress on goji berry micropropagation.
- Author
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Isak, Musab A., Bozkurt, Taner, Tütüncü, Mehmet, Dönmez, Dicle, İzgü, Tolga, and Şimşek, Özhan
- Subjects
- *
MACHINE learning , *PLANT tissue culture , *CADMIUM , *BERRIES , *SUSTAINABILITY , *SUPPORT vector machines , *AGRICULTURAL productivity - Abstract
This study investigates the influence of cadmium (Cd) stress on the micropropagation of Goji Berry (Lycium barbarum L.) across three distinct genotypes (ERU, NQ1, NQ7), employing an array of machine learning (ML) algorithms, including Multilayer Perceptron (MLP), Support Vector Machines (SVM), Random Forest (RF), Gaussian Process (GP), and Extreme Gradient Boosting (XGBoost). The primary motivation is to elucidate genotype-specific responses to Cd stress, which poses significant challenges to agricultural productivity and food safety due to its toxicity. By analyzing the impacts of varying Cd concentrations on plant growth parameters such as proliferation, shoot and root lengths, and root numbers, we aim to develop predictive models that can optimize plant growth under adverse conditions. The ML models revealed complex relationships between Cd exposure and plant physiological changes, with MLP and RF models showing remarkable prediction accuracy (R2 values up to 0.98). Our findings contribute to understanding plant responses to heavy metal stress and offer practical applications in mitigating such stress in plants, demonstrating the potential of ML approaches in advancing plant tissue culture research and sustainable agricultural practices. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Comparison of Temporary Immersion Bioreactor (SETISTM) and Classical Solid Culture in Micropropagation of ‘Grand Naine’ (Musa spp.) Banana Cultivar
- Author
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Bozkurt, Taner, primary, İnan, Sezen, additional, and Dündar, İjlal, additional
- Published
- 2023
- Full Text
- View/download PDF
5. The Effect of Some Plant Growth Regulators on Callus Culture of Different Pistachio Varieties.
- Author
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Bozkurt, Taner and Ergün, Zeynep
- Subjects
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PLANT regulators , *CALLUS (Botany) , *PISTACHIO , *GERMINATION , *PLANT development - Abstract
Pistachio (Pistacia vera L) is one of the oldest cultivated plants in the world. Its fruits are rich in protein, minerals, carbohydrates, fiber, and vitamins. In addition, the demand for these plants is increasing due to the fact that they are very tasty and nutritious. On the other hand, pistachio cultivation is quite difficult. In addition, many problems are encountered in germination with seeds or reproduction with cuttings. These situations necessitate the development of different in vitro tissue culture protocols. In this study, callus culture optimization protocol was developed by using seeds of three different pistachio cultivars. Murashige and Skoog (MS) medium was supplemented with different concentrations of NAA, IAA, 2,4 D and BAP. When callus size (1,776 cm), callus weight (0.908 g) and embryogenic callus regenerations (27.94%) were considered, it was found that the best variety was Tekin. Again, in the evaluation made according to these factors, it was determined that the best improvement was in the MS medium containing 3 mg/L BAP and 1 mg/L 2,4D. The contamination rate detected throughout the studies ranged from 7.65% to 12.91%. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. Effect of Different Plant Growth Regulators on Micropropagation of Some Pitaya Varieties.
- Author
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Bozkurt, Taner, İnan, Sezen, Dündar, İjlal, and Özdemir, Selda K.
- Subjects
PLANT regulators ,GRAFFITI ,ROOT formation ,TISSUE culture ,GIBBERELLIC acid - Abstract
Pitaya belongs to the family Cactaceae and the genus Hylocereus. It is essential to develop tissue culture protocols according to the appropriate variety to spread pitaya commercial production and ensure healthy sapling production. This study aimed to determine the best plant growth regulators (PGRs) in the micropropagation process, and their effects on different pitaya cultivars were evaluated. Shoots of different pitaya cultivars were cultured in Murashige and Skoog (MS) basal medium supplemented with Indole-3-butyric (IBA), 6-benzyl amino purine (BAP), and gibberellic acid (GA3). The highest micropropagation coefficient was determined in Physical Graffiti variety cultured in MS medium supplemented with 2 mg/L BAP. The general evaluation based on the variety determined that the best micropropagation was in the Royal Red variety. In in vitro rooting studies, the best rooting variety was Royal Red (54.47%), followed by Siam Red (50.33%), Physical Graffiti (47.75%), and Seoul Kitchen (44.82%). It was determined that the Royal Red variety is grown in R2 (MS medium supplemented with 1 mg/l IBA) medium gave the best results in all criteria of shoot length (4.28 cm), root length (6.45 cm), and root formation on the face (74.48%). It was envisioned that these differences between the micropropagation, growth, and rooting of the cultivars used in the studies resulted from the cultivar characteristics. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
7. Turunçgillerde bulunan bazı sekonder metabolitlerin biyoteknolojik ve klasik yöntemlerle eldesi, sentezde rol oynayan genlerin moleküler yöntemlerle araştırılması
- Author
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Bozkurt, Taner, Kaçar, Yıldız, Gülnaz, Osman, and Biyoteknoloji Anabilim Dalı
- Subjects
Biyoteknoloji ,Biotechnology - Abstract
Bu tez çalışmasında klasik ve biyoteknolojik yöntemler kullanılarak bazıturunçgillerden sekonder metabolitlerin üretilmesi ve sentezinde rol oynayangenlerin tespit edilmesi amaçlanmıştır. Klasik yöntemlerle mandarin, limon,portakal, turunç ve altıntop çeşitlerine ait meyve kabuklarından esansiyel yağlarelde edilerek kimyasal bileşimleri analiz edilmiştir. D-limonenin major bileşik veportakallarda daha yüksek olduğu bulunmuştur. Portakal ve altıntop meyveeksplantları, kallus kültürlerinde kullanılmıştır. Metabolitlerin biyoteknolojiküretiminde farklı bitki büyüme düzenleyicileri ile desteklenmiş katı ve süspansiyonMurashige & Tucker (MT) ortamı kullanılmıştır. Metabolit üretimini artırmakamacı ile sakkaroz, metil jasmonat (MeJA) ve karanlık uygulaması yapılmıştır.Kalluslardan metabolitler ekstrakte edilip toplam fenolik ve naringin miktarlarıenstrumental analizler ile yapılmıştır. Sonuç olarak, altıntopun ve albedoeksplantının daha uygun olduğu gözlemlenmiştir. Elisitör uygulamalarında 40g/Lsakkaroz daha az etkili olurken 20-30g/L sakkaroz ile 10 μM MeJA'nın metabolitüretimde daha etkili olduğu tespit edilmiştir. Sentezde rol oynayan genlerin tespitiiçin Illumina HiSeqTM 2000 ile RNA-Seq analizleri yapılmıştır. In this thesis, the production of secondary metabolites in some citrus fruitsusing classical and biotechnological methods and the genes playing a role insynthesis were investigated. Essential oils were obtained from peels of the varietiesof mandarin, lemon, orange, sour orange and grapefruit and their chemicalcompositions were analyzed. D-lemonene was the major compound and found tobe higher in oranges. It was found that d-limonene was the major compound andwas higher in oranges. Grapefruit and orange fruit explants have been used incallus cultures. In the biotechnological production of the metabolites, solid andsuspension Murashige & Tucker (MT) media supplemented with different plantgrowth regulators were used. To increase the production of metabolites, sucrose,methyl jasmonate (MeJA) and darkness were applied. The metabolites wereextracted from the callus and the total phenolic and naringin amounts wereanalyzed by instrumental analysis. As a result, it has been observed that grapefruitand albedo explants are more appropriate. It has been found that sucrose 40 g/Lwas less effective in elicitor applications, while 20-30 g/L sucrose and 10 μMMeJA were more effective in metabolite production. RNA-Seq analyses wereperformed with Illumina HiSeqTM 2000 for the detection of genes involved in thesynthesis. 229
- Published
- 2018
8. On the influence of boundary conditions on the modal properties of a base frame
- Author
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Renning, Maik, primary, Kracht, Kerstin, additional, von Wagner, Utz, additional, Köster, Philipp, additional, and Bozkurt, Taner, additional
- Published
- 2014
- Full Text
- View/download PDF
9. Hastane Kökenli MDR-MRSA Suşlarında Protein A Geni ( spa ) Dizi Analizinin Kloanal İlişkinin Tespitindeki Rolü
- Author
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Bozkurt, Taner, Köksal, Fatih, Mikrobiyoloji ve Klinik Mikrobiyoloji Anabilim Dalı, and Çukurova Üniversitesi, Sağlık Bilimleri Enstitüsü, Tıbbi Mikrobiyoloji Anabilim Dalı
- Subjects
MDR-MRSA ,phenotyping ,genotyping ,Mikrobiyoloji ,spa tiplendirme ,Protein A ,genotipik tiplendirme ,PFGE ,Microbiology ,spa typing ,fenotipik tiplendirme - Abstract
Metisiline dirençli S.aureus (MRSA), hastane ve toplum kökenli infeksiyonlardan sorumlu olan en önemli ajanlardan biridir. Çoğu ülkede MRSA'nın yayılımı sürekli artış göstermektedir ve bazı bölgelerde, hastanelerde S.aureus'un neden olduğu infeksiyonlara ait tüm izolatların yarısından çoğu MRSA'dır. MRSA izolatlarında çoklu direnç gün geçtikçe artmaktadır. 30 yıldan daha uzun süre MRSA tedavisinde kullanılan vankomisine de bu günlerde direnç gelişmiştir.MDR-MRSA ve Hastane Enfeksiyonlarını kontrol çabalarının başarısı büyük ölçüde, etkenin tespiti ve klonal özellikleri, muhtemel bulaş kaynağı ve taşıyıcılar ile bulaş yolu gibi lokal epidemiyolojik özelliklerin tespitine bağlıdır.Tiplendirme yöntemlerinden fenotipik tiplendirme yöntemlerinin tekrarlanabilirlik düzeyleri düşük ve ayrım güçleri zayıftır. Ayrıca fenotipik olarak aynı fakat genotipik olarak farklı olan suşları ayırt edememektedir. Bu yüzden son yıllarda tekrarlanabilirliği ve ayrım gücü yüksek olan genotipik yöntemler kullanılmaktadır. Bu yöntemler içerisinde PFGE yöntemi hastane kökenli MRSA suşlarının klonal ilişkilerinin tespitinde altın standart olarak kabul edilmiştir.Bu çalışmada Ç.Ü. Tıp Fakültesi Balcalı Hastanesi kliniklerinde yatan hastalarda görülen hastane infeksiyonlarından izole edilen MDR-MRSA suşlarının klonal ilişkileri PFGE ve spa dizi analizi yöntemi ile tespit edilmeye çalışılmıştır. Çalışmada 2008-2009 yılları arasında MDR-MRSA' nın neden olduğu enfeksiyon hastalıklardan izole edilen 27 örnek kullanıldı. İzolatlara Kirby-Bauer yöntemi ile antibiyotik duyarlılık testi yapıldı ve oluşan profillere göre antibiyotipleme uygulandı. Daha sonra suşlar PFGE ve spa tiplendirme yöntemi ile genotipik olarak incelendi. DNA bant profillerine göre suşlar tiplendirildi.Sonuç olarak çalışılan 27 örnek antibiyotipleme ile 6 ve PFGE ile 10 tipe ayrılmıştır. spa tiplendirme sonuçunda ise çalışılan suşların hemen hepsinde Protein A' nın varlığı tespit edildi. 27 izolattan sadece 5'i spa tip t190 iken diğer 22 izolat tip t030 olarak tiplendirildi. Çalıştığımız suşların tiplendirilmesinde genotipik yöntemlerin daha duyarlı olduğu ve bu yöntemlerden PFGE'in klonal ilişkinin araştırılmasında daha önemli olduğu sonucuna varıldı. Sadece spa tiplendirme yönteminin taşınabilirlik, tekrarlanabilirlik ve sonuçların kolay karşılaştırılabiliyor olmasından dolayı PFGE' ye göre daha iyi olduğu gözlemlendi. Methicillin-resistant S.aureus is one of the most significant agent of community-acquired and hospital-acquired infections. The prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in many countries increases consistently and, more than half of all S. aureus disease isolates are MRSA in hospitals and in some areas. MRSA strains are becoming increasingly multiresistant, and have recently developed resistance to vancomycin, usedsuccessfully to treat MRSA for more than 30 years.Finding of infections and clonal specialities, source of infections and carrier with transmission ways are important because successfully controling of MDR-MRSA and hospital-acquired infections.Reproducibility and discriminatory of phenotypic identification methods which is a typing method are poor. Also, phenotypic identification methods could not distinguish similar phenotypic strains with different genotypes. Therefore, recently, genotyping methods which have high reproducibility and discriminatory are used for identifications. PFGE which is genotypig methods have consented the ?gold standard? of molecular typing at klonal relations establishing of hospital-acquired MRSAIn this study, it has been tried for identification of at klonal relations establishing of MDR-MRSA that isolated from hospital-acquired infections in clinics of Ç.Ü. Faculty of Medicine Balcalı Hospital with PFGE and spa typing method. In this study, it has been used 27 izolates that izolated from hospital infections determined by MDR-MRSA between 2008-2009. Isolates were characterized by antibiotyping as determined by the disk diffusion method (Kirby-Bauer). Later, isolates were investigated with PFGE and spa typing metod and typed in accordance with their DNA bant profiles.As a result, of 27 MRSA isolates, 6 types were evaluated with antibiotyping and 10 type with PFGE methods. It was substantiated that all of isolates had protein A. 5 of 27 isolates were spa tip t190 and 22 isolate were spa tip t030. In typing of searching isolates, genotyping metods were found more sensitivite and it was deduced that PFGE was more importand at klonal relation establishing. It was observed that spa typing metod was better than other metods because of reproducibility, transportability and comparability of results. 95
- Published
- 2009
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