Selma Tabur
Süleyman Demirel University, Fen Bilimleri, Faculty Member
Impacts of the exogenously applied polyamines (PAs) on some physiological features and proline content in drought-resistant barley cultivars (Hordeum vulgare cv. Bülbül-89) and drought-susceptible (Hordeum vulgare cv. Burakbey) were... more
Impacts of the exogenously applied polyamines (PAs) on some physiological features and proline content in drought-resistant barley cultivars (Hordeum vulgare cv. Bülbül-89) and drought-susceptible (Hordeum vulgare cv. Burakbey) were comparatively examined under PEG-6000-simulated drought stress conditions. It was found that drought stress application had adverse impact on all physiological parameters at least 40% compared to that of the control group. It also dramatically increase the proline content of the cultivars. However, exogenously applied PAs (especially Spm on both barley cultivars) under drought stress conditions showed positive effect on all physiological parameters studied. The proline content increased in the presence of all PAs (especially Spd) in drought-susceptible Burakbey cultivar. If in Bülbül-89, polyamine that increases the proline content was Spd only. Among polyamines Cad was found as the polyamine that provided generally the least successful on all parameter...
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Research Interests: Plant Biology, Biology, Regulation, Seed germination, Salt Stress, and 14 moreGrowth, Salinity, Plant, Hordeum vulgare, Plant Growth Regulation, Germination, Distilled Water, Plant Growth Regulator, Mitotic Index, Gibberellic Acid, Kinetin, Hordeum vulgare L, Chromosome aberrations, and Growth Regulator
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The effect of exogenous boric acid on the mitotic activity and chromosomal aberrations in root tip meristems of barley (Hordeum vulgare L. cv. ‘Bulbul 89’) seeds germinated under salt stress was investigated. The inhibitory effect of... more
The effect of exogenous boric acid on the mitotic activity and chromosomal aberrations in root tip meristems of barley (Hordeum vulgare L. cv. ‘Bulbul 89’) seeds germinated under salt stress was investigated. The inhibitory effect of salinity on mitotic index increased with increasing salt concentrations (0.00- control, 0.25, 0.275 and 0.30 M, molar NaCl) as compared to control group. The mitotic index greatly reduced at the highest salt level (0.30 M NaCl). At the same time, the frequency of chromosomal aberrations increased significantly in parallel with the salt concentration rise. It was determined that application of alone boric acid (0,005 µM) was not a prohibitive effect on mitotic index as compared with the barley seeds germinated in distilled water (C, control). Also, the frequency of chromosomal aberrations in application of boric acid increased approximately three-fold according to the control group. Boric acid+different NaCl concentrations simultaneously application remarkably increased the negative effects of salinity on the mitotic activity. However, boric acid application, particularly at high salt concentrations showed a perfect successful in alleviating of the detrimental effect of salinity on the chromosomal aberrations
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Research Interests: Botany, Horticulture, Biology, Germination, Seedling, and 5 moreDistilled Water, Ginkgo Biloba, Mitotic Index, Shoot, and Allium
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The objective of the present study was to with all details explain of the efficiency of L-ascorbic acid (L-AsA) also known as vitamin C on cytotoxicity and genotoxicity induced by salt stress in the barley apical meristems. As a result of... more
The objective of the present study was to with all details explain of the efficiency of L-ascorbic acid (L-AsA) also known as vitamin C on cytotoxicity and genotoxicity induced by salt stress in the barley apical meristems. As a result of the statistical analysis salt stress caused a significant (P ≤ 0.05) decrease in mitotic index of barley seeds depending on concentration increase, while the frequency of chromosomal aberration (CA) increased. In addition, it was determined that mitotic index value was decreased by 46% with 1 μM L-AsA supplementation as compared to control and chromosomal abnormalities were increased by 8.96% as well as. However, in the case of simultaneously application of 1 μM L-AsA and different salt concentrations, the high salt concentrations exhibited an excellent success according to low salt concentrations in alleviating the mitodepressive effect of salt stress. Moreover, the frequency of chromosomal aberrations in the root meristem cells of those seeds wit...
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The effect of humic acid, which is an replace by a biostimulant on mitotic activity and chromosome behaviors in meristem cells of Hordeum vulgare L. germinated under different salt concentrations were investigated. In the parallel to... more
The effect of humic acid, which is an replace by a biostimulant on mitotic activity and chromosome behaviors in meristem cells of Hordeum vulgare L. germinated under different salt concentrations were investigated. In the parallel to increasing salt concentrations, mitotic index partly decreased and observed the higher number of chromosomal abnormalities as compared to control. Also, it was determined that the mitotic index of seeds pretreated with only humic acid increased by 30% according to control and by 42% of mitotic aberrations. Whereas, humic acid along with salt significantly inhibited to mitotic index with parallel to increasing salt concentrations. Moreover, the frequency of chromosomal aberrations in seeds germinated in humic acid and salty medium significantly decreased according to its own control. Humic acid revealed to a successful performance in ameliorating of the detrimental effect of salinity in the all concentrations studied. Humic acid application at 0.35 M sal...
Effects of potassium sulphate (K2SO4) on mitosis, cell cycle and chromosomes in Vicia faba L. seeds germinated at extreme temperatures were studied as flow cytometrically and cytogenetically. Seeds germinated at high (30°C) and low... more
Effects of potassium sulphate (K2SO4) on mitosis, cell cycle and chromosomes in Vicia faba L. seeds germinated at extreme temperatures were studied as flow cytometrically and cytogenetically. Seeds germinated at high (30°C) and low temperatures (4°C) showed a significant decrease in mitotic index as compared to those of optimum temperature conditions. 50 and 250 μM K2SO4 were successful in alleviating the negative effects of high and low temperature on mitotic activity and cell cycle respectively. These concentrations increased the cell division removing or decreasing the negative effects of temperature stress. Chromosomal aberrations were not observed in cells of seeds germinated in distilled water and also at any temperatures. However, the frequency of aberrations increased significantly by increasing K2SO4 concentration. The highest aberration frequency in all temperature degree tested was found at 1000 μM K2SO4 concentration.
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The paper gives an account of the results of karyological investigation of seven Fabaceae taxa from Turkey. Chromosome morphologies and chromosome numbers of taxa belonging to Spartium L., Vicia L., Trifolium Gerard & Lois.and Coronilla... more
The paper gives an account of the results of karyological investigation of seven Fabaceae taxa from Turkey. Chromosome morphologies and chromosome numbers of taxa belonging to Spartium L., Vicia L., Trifolium Gerard & Lois.and Coronilla L. are reported. The karyotype of Coronilla scorpioides was presented for the first time. Chromosome numbers were established for Spartium junceum L. (2n = 52), Vicia peregrina L. (2n = 14), Vicia anatolica Turrill. (2n = 10), Vicia hybrida L. (2n = 12), Vicia narbonensis var. narbonensis (2n = 14), Trifolium aureum Poll. (2n = 20) and Coronilla scorpioides (L.) Koch. (2n = 12). The new data were compared with previous information karyologically. For each chromosome, the arm index was calculated and based on these data, idiograms were drawn. Chromosome characteristics investigated taxa are determined by using karyological tecniques.
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Bot. 35: 162 (1974). Syn: Artemisia maritima L. var. patens Neilr.; Artemisia salina Willd. subsp. patens (Neilr.) Sagorski. Type: Described from Europe. Artemisia santonicum subsp. patens (Asteraceae) was recently collected from Edirne... more
Bot. 35: 162 (1974). Syn: Artemisia maritima L. var. patens Neilr.; Artemisia salina Willd. subsp. patens (Neilr.) Sagorski. Type: Described from Europe. Artemisia santonicum subsp. patens (Asteraceae) was recently collected from Edirne and Canakkale (north-west Turkey) and it has been reported as a new subspecies record for the flora of Turkey (Cullen, 1975; Tutin & Persson, 1976). Recently, new taxa and new records of publications have increased with the increasing revision studies (Akcicek, 2010; Aytac & Duman, 2010; Dirmenci et al., 2010). A. santonicum subsp. santonicum is generally distributed in the Central Anatolia region, at an altitude between 938 and 1000 m in Turkey. The habitat of the plant is calcareous and saline steppes and slopes. However, A. santonicum subsp. patens is distributed at an altitude between 4 and 5 m, generally in coastal areas in the Marmara and Aegean regions. The plant (subsp. patens) grows in moist (temporarily covered with water) areas (Cullen 197...
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Chromosome numbers and karyotypes of some species belonging to the genus Artemisia L. (Asteraceae) were investigated, and chromosome counts of 12 species, 1 of which was counted for the first time, are presented with a thorough... more
Chromosome numbers and karyotypes of some species belonging to the genus Artemisia L. (Asteraceae) were investigated, and chromosome counts of 12 species, 1 of which was counted for the first time, are presented with a thorough compilation of previously published data. All of the species studied belong to the subgenus Artemisia Chromosome numbers of 6 taxa confirmed the previous data. Additionally, karyotypes of 8 species were reported. Karyotype analyses of 6 Artemisia species are reported here for the first time. The basic chromosome numbers in the species studied were x = 8 and x = 9, with ploidy levels ranging from 2x to 4x and 6x. B chromosomes were also present in Artemisia incana (L.) Druce as 2n = 2x = 16 + 2B.
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Brachypodium distachyon is an attractive model species for biological, physical, genomic and functional studies of the Triticeae. Altitude is an abiotic factor such as latitude/longitude, temperature, humidity and water conditions... more
Brachypodium distachyon is an attractive model species for biological, physical, genomic and functional studies of the Triticeae. Altitude is an abiotic factor such as latitude/longitude, temperature, humidity and water conditions affecting the plant life. Many researchers have been working on changes in genome size and morphology to highlight the relation of elevational gradients. In this study, genome size and morphological variations was determined in Brachypodium distachyon L. (Poaceae) accessions collected from Turkey. Flow cytometric analysis was performed with 547 individuals representing 89 accessions of B. distachyon from different altitudinal habitats (from 0 to 1219 meters). 2C nuclear DNA content (± SD) of B. distachyon was estimated to be 0.736 ± 0.02 pg. In cytogenetical analysis, all the individuals from every accession were found to have diploid chromosome numbers (2n = 10). To determine the association with genome size (GS), morphologic traits and altitude obtained ...
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The effect of exogenous boric acid on the mitotic activity and chromosomal aberrations in root tip meristems of barley (Hordeum vulgare L. cv. ‘Bulbul 89’) seeds germinated under salt stress was investigated. The inhibitory effect of... more
The effect of exogenous boric acid on the mitotic activity and chromosomal aberrations in root tip meristems of barley (Hordeum vulgare L. cv. ‘Bulbul 89’) seeds germinated under salt stress was investigated. The inhibitory effect of salinity on mitotic index increased with increasing salt concentrations (0.00- control, 0.25, 0.275 and 0.30 M, molar NaCl) as compared to control group. The mitotic index greatly reduced at the highest salt level (0.30 M NaCl). At the same time, the frequency of chromosomal aberrations increased significantly in parallel with the salt concentration rise. It was determined that application of alone boric acid (0,005 µM) was not a prohibitive effect on mitotic index as compared with the barley seeds germinated in distilled water (C, control). Also, the frequency of chromosomal aberrations in application of boric acid increased approximately three-fold according to the control group. Boric acid+different NaCl concentrations simultaneously application rema...
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In the revision study on the genus Artemisia L. in Turkey, we observed that there were differences between the descriptions of Artemisia herba - alba Asso. in Flora Europea and Flora of Turkey and that the description of Artemisia herba –... more
In the revision study on the genus Artemisia L. in Turkey, we observed that there were differences between the descriptions of Artemisia herba - alba Asso. in Flora Europea and Flora of Turkey and that the description of Artemisia herba – alba Asso. in Flora of Turkey was problematic. We observed that the Turkish specimens were the same as the specimens called Artemisia sieberi Bess., which were collected from Siberia, Caucasia, Central Asia and Kazakhstan. We found that our specimens matched the descriptions given for Artemisia sieberi Bess. in Flora of Iranica and Flora of Ussr. Thus, we determined that the species of Artemisia herba - alba Asso. wasn’t found in Turkey and the specimens given as Artemisia herba -alba Asso. in Flora of Turkey were Artemisia sieberi Bess. subsp. sieberi which is a new record for the Flora of Turkey. The description, disribution map in Turkey and photography of Artemisia sieberi Bess. subsp. sieberi are given.
In the present work, antagonistic effect of abscisic acid (ABA) and various plant growth regulators on cytogenetic activity in root meristem cells of barley (Hordeum vulgare L. cv. Bulbul 89) was compared. The seeds germinated in medium... more
In the present work, antagonistic effect of abscisic acid (ABA) and various plant growth regulators on cytogenetic activity in root meristem cells of barley (Hordeum vulgare L. cv. Bulbul 89) was compared. The seeds germinated in medium with ABA alone (25µM, micromolar), mitotic phases and mitotic aberrations were mounted on an Olympus CX41 microscope and photographed (100X) with a digital camera (Olympus C-5060). The results showed that mitotic index (MI) significantly decreased while chromosomal aberrations increased by approximately 70% as compared to control. However, all of the plant growth regulators (PGRs) studied [gibberellic acid- GA3, Kinetin- KIN, benzyladenine- BA, ethylene- E, 24epibrassinolide- EBR, triacontanol-TRIA and polyamines- PAs (cadaverine-Cad, putrescine- Put, spermidine- Spd, spermine- Spm)] revealed to a successful performance in ameliorating of the negative effect of ABA on these parameters. The data obtained in the present work showed that all stimulators...
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The effect of royal jelly (RJ) on the seed germination, seedling growth (radicle length, radicle number and fresh weight), mitotic activity and chromosomal aberrations of Allium cepa L. germinated under both normal conditions and salt... more
The effect of royal jelly (RJ) on the seed germination, seedling growth (radicle length, radicle number and fresh weight), mitotic activity and chromosomal aberrations of Allium cepa L. germinated under both normal conditions and salt stress were investigated in this work. The radicle length and fresh weight of the seeds
germinated in the medium with RJ alone increased in comparison with ones of the control seeds germinated in distilled water medium while their germination percentage and radicle number statistically exhibited the same values as the control seeds. Furthermore, the mitotic index and frequency of chromosomal aberrations in root tip meristems of A. cepa seeds germinated in the medium with RJ alone demonstrated a significant increase according to ones of the control seeds germinated in distilled water medium. On the other hand, salt stress considerably
inhibited the seed germination and seedling growth of A. cepa. In addition, it markedly decreased the mitotic index in root tip meristems of the seeds and increased the number of chromosomal aberrations. The inhibitive effect of salt on the seed germination, seedling growth and mitotic activity was alleviated in dramatically varying
degrees by RJ application. However, the detrimental effects of salt on the chromosomal aberrations greatly increased with this treatment.
germinated in the medium with RJ alone increased in comparison with ones of the control seeds germinated in distilled water medium while their germination percentage and radicle number statistically exhibited the same values as the control seeds. Furthermore, the mitotic index and frequency of chromosomal aberrations in root tip meristems of A. cepa seeds germinated in the medium with RJ alone demonstrated a significant increase according to ones of the control seeds germinated in distilled water medium. On the other hand, salt stress considerably
inhibited the seed germination and seedling growth of A. cepa. In addition, it markedly decreased the mitotic index in root tip meristems of the seeds and increased the number of chromosomal aberrations. The inhibitive effect of salt on the seed germination, seedling growth and mitotic activity was alleviated in dramatically varying
degrees by RJ application. However, the detrimental effects of salt on the chromosomal aberrations greatly increased with this treatment.
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The cytogenetic aim of this study was to elaborately explain of the efficiency of salicylic acid (SA) on cytotoxicity and genotoxicity induced by salinity stress in the barley apical meristems. The statistical analysis of the obtained... more
The cytogenetic aim of this study was to elaborately explain of the efficiency of salicylic acid (SA) on cytotoxicity and genotoxicity induced by salinity stress in the barley apical meristems. The statistical analysis of the obtained findings indicated that salt stress caused a significant decrease in mitotic index of barley seeds depending on concentration increase, while the frequency of chromosomal abnormality increased. Likewise, it was determined that mitotic index value was decreased with alone SA treatment and chromosomal abnormalities were increased as well as. However, in the case of simultaneously application of SA and different salt concentrations, the highest salt concentration exhibited an excellent success according to low salt concentrations in alleviating the mitodepressive effect of salt stress by increasing mitotic index approximately two fold. Whereas, low salt levels in this application were more positive than in high salt levels in alleviating of the clastogenic effect of salt stress on chromosome structure and behaviors. Therefore, the results reveal that the protective role of SA against cytotoxic effects of salinity stress is more efficient at low salt concentrations.
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In this study, effects of triacontanol (TRIA) pretreatment on mitotic index and chromosome abnormalities in root tips of barley seeds (Hordeum vulgare L. cv. “Bülbül 89”) germinated under salinity conditions were investigated. It was... more
In this study, effects of triacontanol (TRIA) pretreatment on mitotic index and chromosome abnormalities in root tips of barley seeds (Hordeum vulgare L. cv. “Bülbül 89”) germinated under salinity conditions were investigated. It was observed that salt signifi cantly decreased mitotic index and caused chromosome abnormalities, in parallel with concentration rise. Although TRIA pretreatment were unsuccessful to alleviate the preventive effect of salt stress on the mitotic index, it reduced chromosome abnormalities on a large scale. The data obtained were evaluated statistically. Key Words: Barley, chromosome abnormalities, mitotic index, triacontanol, salt stress.
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The effects of gibberellic acid (GA3), kinetin (KIN), benzyladenine and ethylene (E) on mitotic activity and chromosomal aberrations in root tips of barley seeds (Hordeum vulgare L. cv. “Bülbül 89”) germinated under salt stress were... more
The effects of gibberellic acid (GA3), kinetin (KIN), benzyladenine and ethylene (E) on mitotic activity and chromosomal aberrations in root tips of barley seeds (Hordeum vulgare L. cv. “Bülbül 89”) germinated under salt stress were investigated. It was determined that all of these plant growth regulators (PGRs) decreased mitotic index in root tips of barley seeds germinated at 20 °C and
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The effects of exogenous polyamines (PAs): spermine (Spm), spermidine (Spd), cadaverine (Cad) and putrescine (Put) on mitotic activity and chromosomal aberrations in root meristem cells of Hordeum vulgare L. (barley) seeds exposed to... more
The effects of exogenous polyamines (PAs): spermine (Spm), spermidine (Spd), cadaverine (Cad) and putrescine (Put) on mitotic activity and chromosomal aberrations in root meristem cells of Hordeum vulgare L. (barley) seeds exposed to salinity were analyzed. The PAs significantly inhibited cell division in distilled water. Furthermore, most of these PAs (except for Spd) caused a significant increase in the frequency
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This study was conducted in Suleyman Demirel University, Arts and Sciences Faculty, Department of Biology, Isparta, Turkey during 2008 to determine whether ammonium sulphate ((NH4)2SO4) and potassium sulphate (K2SO4) are genetically... more
This study was conducted in Suleyman Demirel University, Arts and Sciences Faculty, Department of Biology, Isparta, Turkey during 2008 to determine whether ammonium sulphate ((NH4)2SO4) and potassium sulphate (K2SO4) are genetically harmful or not. Ammonium sulphate and potassium sulphate were used as artificial fertilizer in various concentrations (1, 10, 50, 100, 250, 500 and 1000 µM) to see their effect