Güncel Gönderiler: FEF, Biyoloji Bölümü Koleksiyonu
Toplam kayıt 559, listelenen: 241-260
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Salicylic acid pretreatment induces drought tolerance and delays leaf rolling by inducing antioxidant systems in maize genotypes
(Springer, 2012)Salicylic acid (SA) acts as an endogenous signal molecule responsible for inducing abiotic stress tolerance in plants. In this study, the role of SA in improving drought tolerance in two maize cultivars (Zea mays L.) ... -
Patterns of distribution of tree frogs in Turkey based on molecular data
(Brill, 2012)Despite previous work on the phylogeny of Palearctic Hyla, several problems still exist regarding systematics of Hyla in Turkey. The systematics of tree frogs (Hyla orientalis and Hyla savignyi) in Turkey was studied using ... -
A novel cry2Ab gene from the indigenous isolate Bacillus thuringiensis subsp. kurstaki
(Korean Society for Microbiolog and Biotechnology, 2012)A novel cry2Ab gene was cloned and sequenced from the indigenous isolate of Bacillus thuringiensis subsp. kurstaki. This gene was designated as cry2Ab25 and its sequence revealed an open reading frame of 1,902 bp encoding ... -
Synthesis and biological activity studies of new hybrid molecules containing tryptamine moiety
(Springer, 2012)The synthesis of N?-(4-substitutedphenylsulfonyl)-2-{4-[2-(1H-indol- yl)ethyl]-3-(4-chlorobenzyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl} acetohydrazides (3a-c), 2-{4-[2-(1H-indol-3-yl)ethyl]-3-(4-chlorobenzyl)-5-oxo- ... -
Scorzonera ahmet-duranii sp. nov. (Asteraceae) from southwest Anatolia, and its phylogenetic position
(2012)Scorzonera ahmet-duranii S. Makbul & Coskuncelebi sp. nov. (Asteraceae) is described and illustrated as a new species endemic to Turkey. It is morphologically similar to S. semicana DC., but differs by its rootstock, deeply ... -
Hydrophobin genes of the entomopathogenic fungus, Metarhizium brunneum, are diVerentially expressed and corresponding mutants are decreased in virulence
(Springer, 2012)Hydrophobins are small, cysteine-rich, secreted proteins, ubiquitously produced by Wlamentous fungi that are speculated to function in fungal growth, cell surface properties, and development, although this has been rigorously ... -
Determination of the bacterial flora as a microbial control agent of Toxoptera aurantii (Homoptera: Aphididae)
(Springer, 2012)Toxoptera aurantii (Homoptera: Aphididae) is one of the most important pests of many agricultural plants such as camellia, cocoa and coffee worldwide. The culturable bacterial flora of the pest was determined to find new ... -
Design and synthesis of new 1,2,4-triazole deriaties containing morpholine moiety as antimicrobial agents
(TÜBİTAK, 2012)2-Morpholine-4ylethyl-3H -1,2,4-triazole-3-ones (2a, 2b) were obtained from the condensation between the corresponding ethoxycarbonylhydrazones and 2-morpholinoethanamine. 2a was conerted to acetohydrazide (4) ia the ... -
Antimicrobial activity and chemical composition of the essential oil from Campanula glomerata L. subsp. hispida (Witasek) Hayek
(RTEÜ, Fen - Edebiyat Fakültesi, Biyoloji Bölümü, 2012)The volatile components of the essential oil from Campanula glomerata L. subsp. hispida (Witasek) Hayek was analyzed by GC and GCMS. Forty-eight compounds representing 89.0 % of the total oil were characterized and the ... -
Composition and antimicrobial activity of essential oil from the flower of Rhododendron luteum Sweet
(Chemical Publishing Co., 2012)Essential oil from air-dried flower of Rhododendron luteum Sweet (Ericaceae), was obtained by hydrodistillation in a Clevenger-type apparatus and analyzed by GC-MS and GC-FID. Sixty-four components were identified in the ... -
Synthesis, structural and biochemical activity of pyridine substituted pyrrole ligands and their mononuclear Cu(II), Ni(II) and Co(II) complexes
(2012)Monomeric copper(II), nickel(II) and Co(II) complexes of 6-(2,5-dimethyl-1 H-pyrrol-1-yl)pyridin-2-amine (dmpypr) and 2,6-bis(2,5- dimethyl-1 H-pyrrol-1-yl)pyridine (tmpypr) were prepared and characterized by elemental ... -
Comparative essential oil analysis of Calendula arvensis L. extracted by hydrodistillation and microwave distillation and antimicrobial activities
(2012)The present study was to investigate the influence of the extraction methods on yield and chemical composition of the essential oil of Calendula arvensis L. The volatiles of C. arvensis have been isolated by hydrodistillation ... -
Volatile constituents and antimicrobial activity of the essential oils from Cladonia rangiformis Hoffm. and Cladonia furcata (Huds.) Schrad
(2012)This study was designed to examine the chemical compositions and antimicrobial activities of the essential oils from Cladonia rangiformis Hoffm. and Cladonia furcata (Huds.) Schrad. The essential oils were isolated by ... -
Chemical composition and antimicrobial activity of the volatile of Gladiolus atroviolaceus boiss
(Chemical Publishing Co., 2012)In the present study, essential oil extracted by hydrodistillation from Gladiolus atroviolaceus Boiss. (Iridaceae) was analyzed by gas chromatography (GC) and GC-mass spectrometry (MS). A total of 52 compounds were identified, ... -
Reduction, Mannich reaction, and antimicrobial activity evaluation of some new 1,2,4-triazol-3-one derivatives
(TÜBİTAK, 2012)Ethyl[4-arylmethyleneamino-3-(4-metylphenyl)-5-oxo-4,5-dihydro-1H -1,2,4-triazole-1-yl]acetates (3a-e and 10a-d) were obtained starting from 4-amino-2,4-dihydro-3H -1,2,4-triazol-3-ones (1 and 9) in 2 steps. The treatment ... -
Antimicrobial activity and a comparative essential oil analysis of Centaurea pulcherrima Willd. var. pulcherrima extracted by hydrodistillation and microwave distillation
(Taylor & Francis Online, 2012)The essential oils of Centaurea pulcherrima Willd. var. pulcherrima (Asteraceae) were isolated by hydrodistillation (HD) and a microwave distillation (MD), than characterised by GC-FID and GC-MS. A total of 58 and 57 ... -
Synthesis of eperezolid-like molecules and evaluation of their antimicrobial activities
(Springer Link, 2012)3-Fluoro-4-(4-phenylpiperazin-l-yl)aniline (II) prepared from 3,4-difluoro nitrobenzene was converted to the corresponding Schiff bases (III) and (IV) by treatment with 4-methoxybenzaldehyde and indol-3-carbaldehyde, ... -
An investigation on the bacterial flora of Agriotes lineatus (Coleoptera: Elateridae) and pathogenicity of the flora members
(Elsevier, 2012)The wireworm Agriotes lineatus (L.) (Coleoptera: Elateridae) is a serious agricultural pest of various vegetables and fruits throughout the world. To find an effective and safe biological control agent against this pest, ... -
Purification and characterization of an extracellular lipase from Mucor hiemalis f. corticola isolated from soil
(Elsevier, 2012)We have screened 39 microfungi isolates originated from soil in terms of lipolytic activity. Out of all screened, a novel strain of Mucor hiemalis f. corticola was determined to have the highest lipase activity. The ... -
Design and synthesis of some azole derivatives as potential antimicrobial agents
(Birkhauser Boston, 2012)Syntheses of 1,2,4-triazol-3-ones, 4a, 4b, and 5 were performed starting from ester ethoxycarbonylhyd-razones (1a, 1b) that were reported earlier. The treatment of triazole derivatives, 4a, 4b, and 5 with several sulfonyl ...