Mevlude Alev Ates | Middle East Technical University (original) (raw)

Talks by Mevlude Alev Ates

Research paper thumbnail of The Third International Symposium on the Biology of Rare and Endemic Plant Species (BIORARE-2014)

The Third International Symposium on “Biology of Rare and Endemic Plant Species (for shortBIORARE... more The Third International Symposium on “Biology of Rare and Endemic Plant Species (for shortBIORARE-2014) is organized and planned to be repeated every other years to share and to discuss recent developments and data on biology, conservation and evolution of rare and endemicplant species. The main goal is to bring senior scientists and students of the field in an informal, but rigorous discussion platform to stimulate future researches and collaborations on population biology, genetics and genomics, evolution-speciation, and conservation genetics of rare and endemic plants. Especially, it is essential for taxonomists and geneticistto get together and communicate with a common language of evolutionary biology so furtherinsights in speciation and evolution of rare and endemic plant species could be achieved. Thet BIORARE-2014 symposium has attracted diverse group ofresearchers from 20 countries including Turkey. Total of 49 oral presentations are going to be presented in the symposiumon April 20-23, 2014. Additionally, total of 58 diverse and interesting poster presentations will be available for the symposium participants to view. On behalf of organizing committee, I would like to welcome you all and wish you a productive meeting and good times in the Sunny Beaches of Antalya, Turkey.

Papers by Mevlude Alev Ates

Research paper thumbnail of Morphologic, Palynologic, and Phylogenetic Relationships of Acantholimon Species (Plumbaginaceae) Sharing Similar Habitats

Commagene journal of biology, Jun 30, 2019

The genus Acantholimon Boiss. is comprised of approximately 200 species worldwide and represented... more The genus Acantholimon Boiss. is comprised of approximately 200 species worldwide and represented with 71 taxa 56% of which are endemic in Turkey. Acantholimon anatolicum, A. ulicinum var. ulicinum, A. gemicianum, A. riyatguelii and A. acerosum var. acerosum are discussed in the current study due to their similar habitats. Although Acantholimon anatolicum, A. ulicinum var. ulicinum, A. gemicianum are morphologically and taxonomically very similar to each other, Acantholimon riyatguelii and A. acerosum var. acerosum are different than other species with scale (2-3 not 4-5) and scapes lengths. To understand the relationships among these taxa, morphological, palynological, and molecular structures were studied. Both LM and SEM were used to obtain the morphological characters and ITS nuclear gene region was amplified for molecular characteristics of taxa. According to the data, in addition to the morphological similarities there are also palynological and molecular similarities.

Research paper thumbnail of MOLECULAR PHYLOGENETIC RELATIONSHIPS OF SOME Fabaceae SPECIES THAT USED AS FORAGE CROPS IN TURKEY

Research paper thumbnail of Tripleurospermum eskilensis (Asteraceae): a new halophytic species from CentralAnatolia, Turkey

Turkish Journal of Botany, 2022

reliable in solving some of the taxonomic problems of Anthemidae tribe. Achene characterization i... more reliable in solving some of the taxonomic problems of Anthemidae tribe. Achene characterization is a very important criterion used in the distinction of Tripleurospermum species as well as those in Asteraceae family. Important taxonomic characteristics are achene size, shape, corona structure, number of ribs, thickness and width of lateral and adaxial ribs, and presence or absence of slime cells

Research paper thumbnail of <i>Astragalus oksutdagensis</i> (Fabaceae), a new species from Turkey

Nordic Journal of Botany, Jan 3, 2022

Research paper thumbnail of Updated-extended molecular time and molecular phylogeny of Gundelia species native to Turkey

Plant Systematics and Evolution, Jun 22, 2021

Generally, Gundelia tournefortii is considered as the sole representative of the genus and the ot... more Generally, Gundelia tournefortii is considered as the sole representative of the genus and the other species of Gundelia as synonyms. Recent studies suggest that the genus is rich with 22 species. Off these, thirteen are endemic to Turkey. To date, no comprehensive molecular study dealing with speciation exists in the genus. To address the speciation at the molecular level, fresh leaves from 57 samples representing 15 species from their natural ranges in Turkey were obtained by sampling over several years and studied with respect to nrDNA (ITS) and the cpDNA (ndhF) gene regions. Molecular data from cpDNA and nrDNA revealed that there were two major clades. One of these clades consists of G. anatolica, G. glabra and G. asperrima when the ndhF data were used (or just G. anatolica based on ITS data) while the other major clade included the remaining species with subclades. Divergence time and geographical phylogenetic reconstruction analysis indicated that there may be 3 major ancestral associations existing in the studied Gundelia species. Based on ndhF data, the oldest ancestral group included G. anatolica, G. glabra and G. asperrima with the divergence time about 21.27 MYA, while G. tournefortii var. tenuisecta and G. dersim were the most recently diverged group (about 4.66 MYA). Ancestral history of diversity analysis suggested that the dispersal and vicariance events involved in the speciation in the genus Gundelia with complex events of natural hybridization, introgression, geographical isolations or some other weak isolation mechanisms.

Research paper thumbnail of rDNA-ITS2 characterization of Trichogramma species (Hymenoptera: Trichogrammatidae) in Turkey

Egyptian Journal of Biological Pest Control, May 6, 2022

Background: ITS2 sequences can be used in systematic studies and proved to give reliable results ... more Background: ITS2 sequences can be used in systematic studies and proved to give reliable results in the distinguishing of Trichogramma species (Hymenoptera: Trichogrammatidae). Correct identification of natural enemies forms the basis of a biological control program. The present study aimed to compare sequences of rDNA-ITS2 of Trichogramma samples with those deposited in GenBank by using ITS2, as a barcode for reliable species identification and assessment of genetic diversity. Results: Molecular identification methods were used to differentiate 2 Trichogramma species collected from Adana province of Turkey; Trichogramma brassicae (Bezdenko) and Trichogramma turkestanica Meyer (Hymenoptera: Trichogrammatidae). ITS2 sequences of samples ranged in size from 378 to 406 bp. The ITS2 sequences were aligned using Clustal W, genetic distances and phylogenetic tree were calculated using MEGA V7.0. rDNA-ITS2 sequences of 37 specimens of Trichogramma confirmed in GenBank in the study. Also, secondary structures of ITS2 sequences were predicted with the help of Mfold web server. All secondary structure constructions were performed at 37 °C using RNA version 2.3 default parameters. Conclusions: A molecular marker can be used successfully to distinguish closely related groups if it is a rapidly evolving and highly conserved gene region. In the study, it was shown that ITS2 was a reliable molecular marker in distinguishing species. Therefore, with rDNA-ITS2 sequence analysis, Trichogramma spp., which is a very important natural enemy in biological control, has been identified.

Research paper thumbnail of Secondary Structure Form of ITS2 Region: A Significant Labeling Tool at all Taxonomic Levels

Directorate National Botanical Garden of Turkiye

The general purpose of the molecular systematic studies is to illuminate the ITS2 structure of th... more The general purpose of the molecular systematic studies is to illuminate the ITS2 structure of the target populations, to determine its phylogenetic boundaries, and to clarify intra-species and inter-species relationships. Particularly, the internal transcribed spacer 2 (ITS2) region of nuclear ribosomal DNA is used in molecular systematics because of availability of conserved regions with its highly repeated in number in plant genomes. Addition to the primary sequences of ITS2, also secondary structure form of the region became a valuable feature in species divergence and became to use like a morphological character. In the current study to indicate the secondary structure form of the ITS2 region as a useful tool in systematics, different taxa from 22 genera were used. The DNA samples were collected in the field studies in 2021 and sequences were aligned using ClustalW and Kimura-2 parameter to calculate the genetic distances. Phylogenetic tree was also constructed with Maximum Lik...

Research paper thumbnail of Dianthus berkayii (Caryophyllaceae), a new species from Turkey

Turkish Journal of Botany, 2022

Introduction Caryophyllaceae is one of the largest family with 86 genera and 2200 species in the ... more Introduction Caryophyllaceae is one of the largest family with 86 genera and 2200 species in the world and usually found in all temperate regions of the world; generally, its distribution areas are Mediterranean and adjoining parts of Europe and southwestern Asia. Caryophyllaceae are systematically divided into 3 subfamilies: Alsinoideae "stipules absent and sepals free from each other", Silenoideae "stipules absent and sepals connate", and Paronychioideae "stipules present and usually scarious and sepals free or connate" (Heywood et al., 2007). Moreover, the genus Dianthus L. belongs to the Silenoideae subfamily, because of its opposite and exstipulate leaves and at least at the base connate sepals. The Caryophyllaceae family is represented by 37 genera and 645 taxa in Turkey (Hamzaoğlu, 2012).

Research paper thumbnail of Taxonomic Revision of six Astragalus Sections That Native to Turkey based on three non-coding trn regions of cpDNA

Aim of the study:Astragalus, belonging to the legume family Fabaceae, is a large genus with about... more Aim of the study:Astragalus, belonging to the legume family Fabaceae, is a large genus with about 3,000 species of herbs and small shrubs in Northern Hemisphere.The aim of this study is to revise Macrophyllium, Hymenostegis, Poterion, Megalocystis, Halicacabus and Hymenocoleus sections of genus Astragalus naturally found in Turkey by using three noncoding trn regions from chroloplast DNA. Material and Methods: Twenty-nine different species that belongs to six Astragalus sections native to Turkey were studied. Samples were collected from natural habitats of each species in Turkey. All DNA isolations were done by using optimized CTAB method (Doyle&Doyle). Universal primers from Taberlet et. al. were carried out for amplifying trnL3'-5', trnL-F and trn Val regions. For molecular data analysis MEGA software were used and Neigbour Joining method with bootstrap test analysis was used for constructing phylogenetic trees. Results: Totally regions were aligned as 1238 base pairs in length and 43 of them were variable. 22 of these variables were parsimony informative. Overall genetic diversity among species were 0,0060. According to phylogenetic tree there were 2 different main clades. Hymenostegis section composed one of this clade and the others were located in other main clade. Poterion section was distinct than other sections and Hymenocoleous section stayed in one different branch in the tree. Moreover, species of Megalocystis and Halicacabus sections were located closed to each other. Acknowledgements: This study was support by TUBITAK with TBAG-110 T 911 numbered project.

Research paper thumbnail of Efficient in vitro multiplication in Ornithogalum ulophyllum Hand.-Mazz. from twin scale explants

Scientia Horticulturae, 2008

Ornithogalum ulophyllum Hand.-Mazz. with beautiful white flowers is an important medicinal and or... more Ornithogalum ulophyllum Hand.-Mazz. with beautiful white flowers is an important medicinal and ornamental plant of the Middle Eastern countries and need exploitation for commercial propagation. The study reports in vitro mass proliferation of bulblets achieved from twin ...

Research paper thumbnail of Use of psyllium (isubgol) husk as an alternative gelling agent for the culture of prokaryotic microalgae (Cyanobacteria) Chroococcus limneticus Lemmermann and eukaryotic green microalgae (Chlorophyta) Scenedesmus quadricauda (Turpin) Brebisson

AFRICAN JOURNAL OF BIOTECHNOLOGY

Agar is popularly used as gelling agent to obtain in vitro culture of prokaryotic and eukaryotic ... more Agar is popularly used as gelling agent to obtain in vitro culture of prokaryotic and eukaryotic microalgae. Exclusive use of agar is resulting in over exploitation of its resources and makes it essential to look for alternative and cheap sources. The study reports in vitro culture of prokaryotic microalgae (Cyanobacteria) Chroococcus limneticus and eukaryotic green microalgae (Chlorophyta) Scenedesmus quadricauda on BG11 medium solidified with 15 g L-1 agar or 10, 15, 20, 25, 30, 35 and 40 g L-1 psyllium (isubgol) husk as gelling agent. The results demonstrated that prokaryotic microalgae C. limneticus was less appropriate for culture on psyllium husk gel compared to eukaryotic green microalgae S. quadricauda. However, the cells of C. limneticus could be multiplied on 10 or 15 g L-1 psyllium husk as gelling agent. The highest number of 642000 cells mL-1 of C. limneticus on 15 g L-1 psyllium husk were far lower than 722000 cells mL-1 on agar gelled medium (control). Contrarily, the ...

Research paper thumbnail of The Effects of Computer Assisted English Instruction on High School Preparatory Students’ Attitudes towards Computers and English

The aim of this research was to discern the effects of computer assisted English instruction on E... more The aim of this research was to discern the effects of computer assisted English instruction on English language preparatory students' attitudes towards computers and English in a Turkish-medium high school with an intensive English program. A quasi-experimental ...

Research paper thumbnail of Preservice computer teachers’ views on developing chemistry software based on constructivist 7E model

Procedia - Social and Behavioral Sciences, 2010

This survey aimed at revealing educational software development difficulties of the preservice co... more This survey aimed at revealing educational software development difficulties of the preservice computer teachers (n=57) in a virtual chemistry laboratory (SANLAB) development project besides their suggestions to overcome such difficulties, and views on 7E model and contributions of this project. The findings revealed that most of the preservice computer teachers agreed upon the contribution of 7E model for meaningful learning.

Research paper thumbnail of Developing an interactive virtual chemistry laboratory enriched with constructivist learning activities for secondary schools

Procedia - Social and Behavioral Sciences, 2009

This paper aims to introduce a project in collaboration with Educational Technologies General Dir... more This paper aims to introduce a project in collaboration with Educational Technologies General Directorate of Ministry of National Education (MoNE) and Computer Education and Instructional Technologies (CEIT) Department of Ege University which was funded by The Scientific and Technological Research Council of Turkey (TÜBİTAK). The project aims to design a virtual chemistry lab compatible with the new chemistry curriculum of

Research paper thumbnail of The reflections of student teachers on project based learning and investigating self evaluation versus teacher evaluation

Procedia - Social and Behavioral Sciences, 2009

The purpose of the study was to examine the effects of project based learning on computer student... more The purpose of the study was to examine the effects of project based learning on computer student teachers and investigate self evaluation of students versus teacher evaluation as well. In this qualitative study, the participants were 55 junior student teachers (35 male, 20 female) at Ege University. The students were asked to respond ten semi-structured questions in a form. In order to fulfill the reliability of data analysis, two researchers seperately analysed the qualitative data, the percentage of agreement was 0.75. Moreover, the students' projects were evaluated by instructors and students themselves and the correlations among them were tested statistically.

Research paper thumbnail of Developing ICT skills of visually impaired learners

Procedia - Social and Behavioral Sciences, 2010

The purpose of this study is to reveal problems that visually impaired learners (VIL) encounter d... more The purpose of this study is to reveal problems that visually impaired learners (VIL) encounter during developing information and communication technologies (ICT) skills and to suggest solutions for these problems. In this qualitative descriptive case study research, ...

Research paper thumbnail of Investigating prospective computer teachers’ perceptions on e-learning

Procedia - Social and Behavioral Sciences, 2009

The purpose of the study was to investigate prospective computer teachers' perceptions on e-learn... more The purpose of the study was to investigate prospective computer teachers' perceptions on e-learning. Besides, brief history of elearning in Turkey was introduced. An e-learning survey which is of 54 questions was administered to 85 junior and senior students enrolled at Computer Education and Instructional Technologies department of Faculty of Education, Ege University. The findings revealed that participant students were not knowledgable enough about e-learning as it was predicted though they were eager to learn more about it. They also had the notion that the e-learning applications will gain attention and interest in the near future more than they have today.

Research paper thumbnail of The handbook of blended learning: Global perspectives, local designs

This comprehensive resource highlights the most recent practices and trends in blended learning f... more This comprehensive resource highlights the most recent practices and trends in blended learning from a global perspective and provides targeted information for specific blended learning situations. You'll find examples of learning options that combine face-to-face ...

Research paper thumbnail of The Third International Symposium on the Biology of Rare and Endemic Plant Species (BIORARE-2014)

The Third International Symposium on “Biology of Rare and Endemic Plant Species (for shortBIORARE... more The Third International Symposium on “Biology of Rare and Endemic Plant Species (for shortBIORARE-2014) is organized and planned to be repeated every other years to share and to discuss recent developments and data on biology, conservation and evolution of rare and endemicplant species. The main goal is to bring senior scientists and students of the field in an informal, but rigorous discussion platform to stimulate future researches and collaborations on population biology, genetics and genomics, evolution-speciation, and conservation genetics of rare and endemic plants. Especially, it is essential for taxonomists and geneticistto get together and communicate with a common language of evolutionary biology so furtherinsights in speciation and evolution of rare and endemic plant species could be achieved. Thet BIORARE-2014 symposium has attracted diverse group ofresearchers from 20 countries including Turkey. Total of 49 oral presentations are going to be presented in the symposiumon April 20-23, 2014. Additionally, total of 58 diverse and interesting poster presentations will be available for the symposium participants to view. On behalf of organizing committee, I would like to welcome you all and wish you a productive meeting and good times in the Sunny Beaches of Antalya, Turkey.

Research paper thumbnail of Morphologic, Palynologic, and Phylogenetic Relationships of Acantholimon Species (Plumbaginaceae) Sharing Similar Habitats

Commagene journal of biology, Jun 30, 2019

The genus Acantholimon Boiss. is comprised of approximately 200 species worldwide and represented... more The genus Acantholimon Boiss. is comprised of approximately 200 species worldwide and represented with 71 taxa 56% of which are endemic in Turkey. Acantholimon anatolicum, A. ulicinum var. ulicinum, A. gemicianum, A. riyatguelii and A. acerosum var. acerosum are discussed in the current study due to their similar habitats. Although Acantholimon anatolicum, A. ulicinum var. ulicinum, A. gemicianum are morphologically and taxonomically very similar to each other, Acantholimon riyatguelii and A. acerosum var. acerosum are different than other species with scale (2-3 not 4-5) and scapes lengths. To understand the relationships among these taxa, morphological, palynological, and molecular structures were studied. Both LM and SEM were used to obtain the morphological characters and ITS nuclear gene region was amplified for molecular characteristics of taxa. According to the data, in addition to the morphological similarities there are also palynological and molecular similarities.

Research paper thumbnail of MOLECULAR PHYLOGENETIC RELATIONSHIPS OF SOME Fabaceae SPECIES THAT USED AS FORAGE CROPS IN TURKEY

Research paper thumbnail of Tripleurospermum eskilensis (Asteraceae): a new halophytic species from CentralAnatolia, Turkey

Turkish Journal of Botany, 2022

reliable in solving some of the taxonomic problems of Anthemidae tribe. Achene characterization i... more reliable in solving some of the taxonomic problems of Anthemidae tribe. Achene characterization is a very important criterion used in the distinction of Tripleurospermum species as well as those in Asteraceae family. Important taxonomic characteristics are achene size, shape, corona structure, number of ribs, thickness and width of lateral and adaxial ribs, and presence or absence of slime cells

Research paper thumbnail of <i>Astragalus oksutdagensis</i> (Fabaceae), a new species from Turkey

Nordic Journal of Botany, Jan 3, 2022

Research paper thumbnail of Updated-extended molecular time and molecular phylogeny of Gundelia species native to Turkey

Plant Systematics and Evolution, Jun 22, 2021

Generally, Gundelia tournefortii is considered as the sole representative of the genus and the ot... more Generally, Gundelia tournefortii is considered as the sole representative of the genus and the other species of Gundelia as synonyms. Recent studies suggest that the genus is rich with 22 species. Off these, thirteen are endemic to Turkey. To date, no comprehensive molecular study dealing with speciation exists in the genus. To address the speciation at the molecular level, fresh leaves from 57 samples representing 15 species from their natural ranges in Turkey were obtained by sampling over several years and studied with respect to nrDNA (ITS) and the cpDNA (ndhF) gene regions. Molecular data from cpDNA and nrDNA revealed that there were two major clades. One of these clades consists of G. anatolica, G. glabra and G. asperrima when the ndhF data were used (or just G. anatolica based on ITS data) while the other major clade included the remaining species with subclades. Divergence time and geographical phylogenetic reconstruction analysis indicated that there may be 3 major ancestral associations existing in the studied Gundelia species. Based on ndhF data, the oldest ancestral group included G. anatolica, G. glabra and G. asperrima with the divergence time about 21.27 MYA, while G. tournefortii var. tenuisecta and G. dersim were the most recently diverged group (about 4.66 MYA). Ancestral history of diversity analysis suggested that the dispersal and vicariance events involved in the speciation in the genus Gundelia with complex events of natural hybridization, introgression, geographical isolations or some other weak isolation mechanisms.

Research paper thumbnail of rDNA-ITS2 characterization of Trichogramma species (Hymenoptera: Trichogrammatidae) in Turkey

Egyptian Journal of Biological Pest Control, May 6, 2022

Background: ITS2 sequences can be used in systematic studies and proved to give reliable results ... more Background: ITS2 sequences can be used in systematic studies and proved to give reliable results in the distinguishing of Trichogramma species (Hymenoptera: Trichogrammatidae). Correct identification of natural enemies forms the basis of a biological control program. The present study aimed to compare sequences of rDNA-ITS2 of Trichogramma samples with those deposited in GenBank by using ITS2, as a barcode for reliable species identification and assessment of genetic diversity. Results: Molecular identification methods were used to differentiate 2 Trichogramma species collected from Adana province of Turkey; Trichogramma brassicae (Bezdenko) and Trichogramma turkestanica Meyer (Hymenoptera: Trichogrammatidae). ITS2 sequences of samples ranged in size from 378 to 406 bp. The ITS2 sequences were aligned using Clustal W, genetic distances and phylogenetic tree were calculated using MEGA V7.0. rDNA-ITS2 sequences of 37 specimens of Trichogramma confirmed in GenBank in the study. Also, secondary structures of ITS2 sequences were predicted with the help of Mfold web server. All secondary structure constructions were performed at 37 °C using RNA version 2.3 default parameters. Conclusions: A molecular marker can be used successfully to distinguish closely related groups if it is a rapidly evolving and highly conserved gene region. In the study, it was shown that ITS2 was a reliable molecular marker in distinguishing species. Therefore, with rDNA-ITS2 sequence analysis, Trichogramma spp., which is a very important natural enemy in biological control, has been identified.

Research paper thumbnail of Secondary Structure Form of ITS2 Region: A Significant Labeling Tool at all Taxonomic Levels

Directorate National Botanical Garden of Turkiye

The general purpose of the molecular systematic studies is to illuminate the ITS2 structure of th... more The general purpose of the molecular systematic studies is to illuminate the ITS2 structure of the target populations, to determine its phylogenetic boundaries, and to clarify intra-species and inter-species relationships. Particularly, the internal transcribed spacer 2 (ITS2) region of nuclear ribosomal DNA is used in molecular systematics because of availability of conserved regions with its highly repeated in number in plant genomes. Addition to the primary sequences of ITS2, also secondary structure form of the region became a valuable feature in species divergence and became to use like a morphological character. In the current study to indicate the secondary structure form of the ITS2 region as a useful tool in systematics, different taxa from 22 genera were used. The DNA samples were collected in the field studies in 2021 and sequences were aligned using ClustalW and Kimura-2 parameter to calculate the genetic distances. Phylogenetic tree was also constructed with Maximum Lik...

Research paper thumbnail of Dianthus berkayii (Caryophyllaceae), a new species from Turkey

Turkish Journal of Botany, 2022

Introduction Caryophyllaceae is one of the largest family with 86 genera and 2200 species in the ... more Introduction Caryophyllaceae is one of the largest family with 86 genera and 2200 species in the world and usually found in all temperate regions of the world; generally, its distribution areas are Mediterranean and adjoining parts of Europe and southwestern Asia. Caryophyllaceae are systematically divided into 3 subfamilies: Alsinoideae "stipules absent and sepals free from each other", Silenoideae "stipules absent and sepals connate", and Paronychioideae "stipules present and usually scarious and sepals free or connate" (Heywood et al., 2007). Moreover, the genus Dianthus L. belongs to the Silenoideae subfamily, because of its opposite and exstipulate leaves and at least at the base connate sepals. The Caryophyllaceae family is represented by 37 genera and 645 taxa in Turkey (Hamzaoğlu, 2012).

Research paper thumbnail of Taxonomic Revision of six Astragalus Sections That Native to Turkey based on three non-coding trn regions of cpDNA

Aim of the study:Astragalus, belonging to the legume family Fabaceae, is a large genus with about... more Aim of the study:Astragalus, belonging to the legume family Fabaceae, is a large genus with about 3,000 species of herbs and small shrubs in Northern Hemisphere.The aim of this study is to revise Macrophyllium, Hymenostegis, Poterion, Megalocystis, Halicacabus and Hymenocoleus sections of genus Astragalus naturally found in Turkey by using three noncoding trn regions from chroloplast DNA. Material and Methods: Twenty-nine different species that belongs to six Astragalus sections native to Turkey were studied. Samples were collected from natural habitats of each species in Turkey. All DNA isolations were done by using optimized CTAB method (Doyle&Doyle). Universal primers from Taberlet et. al. were carried out for amplifying trnL3'-5', trnL-F and trn Val regions. For molecular data analysis MEGA software were used and Neigbour Joining method with bootstrap test analysis was used for constructing phylogenetic trees. Results: Totally regions were aligned as 1238 base pairs in length and 43 of them were variable. 22 of these variables were parsimony informative. Overall genetic diversity among species were 0,0060. According to phylogenetic tree there were 2 different main clades. Hymenostegis section composed one of this clade and the others were located in other main clade. Poterion section was distinct than other sections and Hymenocoleous section stayed in one different branch in the tree. Moreover, species of Megalocystis and Halicacabus sections were located closed to each other. Acknowledgements: This study was support by TUBITAK with TBAG-110 T 911 numbered project.

Research paper thumbnail of Efficient in vitro multiplication in Ornithogalum ulophyllum Hand.-Mazz. from twin scale explants

Scientia Horticulturae, 2008

Ornithogalum ulophyllum Hand.-Mazz. with beautiful white flowers is an important medicinal and or... more Ornithogalum ulophyllum Hand.-Mazz. with beautiful white flowers is an important medicinal and ornamental plant of the Middle Eastern countries and need exploitation for commercial propagation. The study reports in vitro mass proliferation of bulblets achieved from twin ...

Research paper thumbnail of Use of psyllium (isubgol) husk as an alternative gelling agent for the culture of prokaryotic microalgae (Cyanobacteria) Chroococcus limneticus Lemmermann and eukaryotic green microalgae (Chlorophyta) Scenedesmus quadricauda (Turpin) Brebisson

AFRICAN JOURNAL OF BIOTECHNOLOGY

Agar is popularly used as gelling agent to obtain in vitro culture of prokaryotic and eukaryotic ... more Agar is popularly used as gelling agent to obtain in vitro culture of prokaryotic and eukaryotic microalgae. Exclusive use of agar is resulting in over exploitation of its resources and makes it essential to look for alternative and cheap sources. The study reports in vitro culture of prokaryotic microalgae (Cyanobacteria) Chroococcus limneticus and eukaryotic green microalgae (Chlorophyta) Scenedesmus quadricauda on BG11 medium solidified with 15 g L-1 agar or 10, 15, 20, 25, 30, 35 and 40 g L-1 psyllium (isubgol) husk as gelling agent. The results demonstrated that prokaryotic microalgae C. limneticus was less appropriate for culture on psyllium husk gel compared to eukaryotic green microalgae S. quadricauda. However, the cells of C. limneticus could be multiplied on 10 or 15 g L-1 psyllium husk as gelling agent. The highest number of 642000 cells mL-1 of C. limneticus on 15 g L-1 psyllium husk were far lower than 722000 cells mL-1 on agar gelled medium (control). Contrarily, the ...

Research paper thumbnail of The Effects of Computer Assisted English Instruction on High School Preparatory Students’ Attitudes towards Computers and English

The aim of this research was to discern the effects of computer assisted English instruction on E... more The aim of this research was to discern the effects of computer assisted English instruction on English language preparatory students' attitudes towards computers and English in a Turkish-medium high school with an intensive English program. A quasi-experimental ...

Research paper thumbnail of Preservice computer teachers’ views on developing chemistry software based on constructivist 7E model

Procedia - Social and Behavioral Sciences, 2010

This survey aimed at revealing educational software development difficulties of the preservice co... more This survey aimed at revealing educational software development difficulties of the preservice computer teachers (n=57) in a virtual chemistry laboratory (SANLAB) development project besides their suggestions to overcome such difficulties, and views on 7E model and contributions of this project. The findings revealed that most of the preservice computer teachers agreed upon the contribution of 7E model for meaningful learning.

Research paper thumbnail of Developing an interactive virtual chemistry laboratory enriched with constructivist learning activities for secondary schools

Procedia - Social and Behavioral Sciences, 2009

This paper aims to introduce a project in collaboration with Educational Technologies General Dir... more This paper aims to introduce a project in collaboration with Educational Technologies General Directorate of Ministry of National Education (MoNE) and Computer Education and Instructional Technologies (CEIT) Department of Ege University which was funded by The Scientific and Technological Research Council of Turkey (TÜBİTAK). The project aims to design a virtual chemistry lab compatible with the new chemistry curriculum of

Research paper thumbnail of The reflections of student teachers on project based learning and investigating self evaluation versus teacher evaluation

Procedia - Social and Behavioral Sciences, 2009

The purpose of the study was to examine the effects of project based learning on computer student... more The purpose of the study was to examine the effects of project based learning on computer student teachers and investigate self evaluation of students versus teacher evaluation as well. In this qualitative study, the participants were 55 junior student teachers (35 male, 20 female) at Ege University. The students were asked to respond ten semi-structured questions in a form. In order to fulfill the reliability of data analysis, two researchers seperately analysed the qualitative data, the percentage of agreement was 0.75. Moreover, the students' projects were evaluated by instructors and students themselves and the correlations among them were tested statistically.

Research paper thumbnail of Developing ICT skills of visually impaired learners

Procedia - Social and Behavioral Sciences, 2010

The purpose of this study is to reveal problems that visually impaired learners (VIL) encounter d... more The purpose of this study is to reveal problems that visually impaired learners (VIL) encounter during developing information and communication technologies (ICT) skills and to suggest solutions for these problems. In this qualitative descriptive case study research, ...

Research paper thumbnail of Investigating prospective computer teachers’ perceptions on e-learning

Procedia - Social and Behavioral Sciences, 2009

The purpose of the study was to investigate prospective computer teachers' perceptions on e-learn... more The purpose of the study was to investigate prospective computer teachers' perceptions on e-learning. Besides, brief history of elearning in Turkey was introduced. An e-learning survey which is of 54 questions was administered to 85 junior and senior students enrolled at Computer Education and Instructional Technologies department of Faculty of Education, Ege University. The findings revealed that participant students were not knowledgable enough about e-learning as it was predicted though they were eager to learn more about it. They also had the notion that the e-learning applications will gain attention and interest in the near future more than they have today.

Research paper thumbnail of The handbook of blended learning: Global perspectives, local designs

This comprehensive resource highlights the most recent practices and trends in blended learning f... more This comprehensive resource highlights the most recent practices and trends in blended learning from a global perspective and provides targeted information for specific blended learning situations. You'll find examples of learning options that combine face-to-face ...