Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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Master Thesis Proteomic Basis of Drought Tolerance in Chickpea(Izmir Institute of Technology, 2010) Şelale, Hatice; Frary, AnneIn this study our aim was to identify differentially expressed proteins in root and leaf samples of the drought tolerant chickpea cultivar Gokce using proteomics approaches. For this aim we carried out 2D gel electrophoresis from total proteome extracts of root and leaf samples of Gokce cultivar from drought treated and control samples. In root 2D gels we obtained approximately 430 proteins; 14 of them were newly formed and 4 of them were disappeared in drought stress. Also we obtained 12 over-expressed protein and 4 down-regulated spot as a result of drought stress. In leaf 2D gels we obtained approximately 450 proteins 4 of them were newly formed spots, and 3 of them were disappeared in drought stress. For these samples we obtained 24 over-expressed proteins and 17 down-regulated proteins in drought stress. We identified differentially expressed proteins in MALDI-TOF/TOF mass spectrometer via peptide mass fingerprinting. Identified proteins are zinc finger (C2H2 type, AN1-like) family protein, pathogenesis-related family protein, STRS2 (STRESS RESPONSE SUPPRESSOR 2), 26S proteasome non-ATPase regulatory subunit 3, pentatricopeptide repeat-containing protein, RABB1C (ARABIDOPSIS RAB GTPASE HOMOLOG B1C); serine hydroxymethyltransferase, fiddlehead protein, aluminum-activated malate transporter, phloem protein 2-A8, ribosomal protein L30 family protein, N-rich protein with known function and we identified 14 hypothetical proteins with unknown function. Identified proteins are WRKY DNA-binding protein 6, myb family transcription factor, porin family protein, pentatricopeptide repeat (PPR) protein and transmembrane protein and 2 hypothetical proteins with unknown function.Master Thesis Identification of Salt Stress Responsive Protyeins in Wild Sugar Beet (beta Maritima) Using 2d-Page With Maldi-tof/Tof System(Izmir Institute of Technology, 2012) Çakıroğlu, Çiğdem; Karakaya, Hüseyin ÇağlarHigh salinity is one of the abiotic stresses, which affects the homeostasis, growth and productivity of plants. In plants, uptake of the non-essential salt ions negatively affects the anatomy, physiology and metabolism, changes the osmotic balance in cells and causes abundant dehydration. In this case, higher plants develop salt tolerance mechanisms such as induction of related signaling pathways, effluxion of salt ions, accumulation of these toxic ions in their vacuoles, activation of their detoxification mechanisms and production of osmoprotectans. In this study, identification of salt responsive proteins in moderately halophyte wild type sugar beet Beta vulgaris ssp. maritima was aimed. In order to investigate the protein-based natural stress tolerating mechanisms, plants were exposed to 150 mM NaCl and total proteins were extracted. Differentially expressed proteins were identified by proteomic approaches including MALDI-TOF/TOF mass spectrometry combined two dimensional polyacrylamide gel electrophoresis. The results revealed that enzymatic antioxidants and secondary members of antioxidative pathways are responsive in salt stress. In conclusion, these detected proteins demonstrate that antioxidative system may be the major defense mechanism in halophytic plants.