Дисертації з теми "Gametophyte development"
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Madrid, Eric. "Female gametophyte development and evolution in Piperales." Connect to online resource, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3337127.
Повний текст джерелаMcClelland, D. J. "Genetical studies of gametophyte development in the moss Physcomitrella patens." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233202.
Повний текст джерелаKu, Chuan-Chih. "TCP6, a regulator in Arabidopsis gametophyte development and DNA damage response." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/17892.
Повний текст джерелаSrilunchang, Kanok-orn. "Molecular characterization and identification of genes involved in maize female gametophyte development." kostenfrei, 2009. http://www.opus-bayern.de/uni-regensburg/volltexte/2009/1366/.
Повний текст джерелаKőszegi, Dávid. "RKD genes : a novel transcription factor family involved in the female gametophyte development of Arabidopsis and wheat." kostenfrei, 2008. http://nbn-resolving.de/urn:nbn:de:gbv:3:4-823.
Повний текст джерелаSiebers, Meike [Verfasser]. "The Role of Acyl-ACP Thioesterases and Glycerophosphodiester Phosphodiesterases for Gametophyte Development in Arabidopsis thaliana / Meike Siebers." Bonn : Universitäts- und Landesbibliothek Bonn, 2016. http://d-nb.info/1165650665/34.
Повний текст джерелаRizzo, Paride [Verfasser]. "Novel insights on female gametophyte development in the apomictic model species Boechera spp. and Hypericum spp. / Paride Rizzo." Halle, 2016. http://d-nb.info/1137509848/34.
Повний текст джерелаKőszegi, Dávid [Verfasser], Gerd Akademischer Betreuer] Jürgens, Gunter [Akademischer Betreuer] Reuter, and Ulrich [Akademischer Betreuer] [Wobus. "RKD genes: a novel transcription factor family involved in the female gametophyte development of Arabidopsis and wheat / Dávid Kőszegi. Betreuer: Gerd Jürgens ; Gunter Reuter ; Ulrich Wobus." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2008. http://d-nb.info/1024874583/34.
Повний текст джерелаŠoljić, Lucija [Verfasser], Thomas [Akademischer Betreuer] Dresselhaus, and Stephan [Akademischer Betreuer] Schneuwly. "Microarray analysis of single isolated cells of the female gametophyte reveals potential regulators of female germline development in Arabidopsis thaliana / Lucija Soljic. Betreuer: Thomas Dresselhaus ; Stephan Schneuwly." Regensburg : Universitätsbibliothek Regensburg, 2012. http://d-nb.info/1030179379/34.
Повний текст джерелаŠoljić, Lucija Verfasser], Thomas [Akademischer Betreuer] [Dresselhaus, and Stephan [Akademischer Betreuer] Schneuwly. "Microarray analysis of single isolated cells of the female gametophyte reveals potential regulators of female germline development in Arabidopsis thaliana / Lucija Soljic. Betreuer: Thomas Dresselhaus ; Stephan Schneuwly." Regensburg : Universitätsbibliothek Regensburg, 2012. http://d-nb.info/1030179379/34.
Повний текст джерелаRodrigo-Peiris, Thushani. "Unraveling the Functions of Plant Ran GTPase-Activating Protein (RanGAP) by T-DNA Mutant Analysis and Investigation of Molecular Interactions of Tandem Zinc Finger 1 (TZF1) in Arabidopsis thaliana." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343796551.
Повний текст джерелаTöller, Armin [Verfasser], Paul [Akademischer Betreuer] Schulze-Lefert, and Martin [Akademischer Betreuer] Hülskamp. "Studies of plant innate immunity provide new functional insights on class IIa WRKY transcription factors and reveals a role for two Glucan Synthase-Like genes in gametophyte development / Armin Töller. Gutachter: Paul Schulze-Lefert ; Martin Hülskamp." Köln : Universitäts- und Stadtbibliothek Köln, 2011. http://d-nb.info/1038064929/34.
Повний текст джерелаLindsay, Stuart. "Field experiments on the development of fern gametophytes." Thesis, University of Edinburgh, 1992. http://hdl.handle.net/1842/15219.
Повний текст джерелаWakeley, Philip Robert. "A study of maize male gametophytic gene expression." Thesis, Royal Holloway, University of London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261723.
Повний текст джерелаHorst, Nelly [Verfasser], and Ralf [Akademischer Betreuer] Reski. "The homeobox gene BELL1 is the master regulator for the developmental switch from gametophyte to sporophyte in Physcomitrella patens." Freiburg : Universität, 2016. http://d-nb.info/111989946X/34.
Повний текст джерелаCoury, Daniel Adam. "Exceptional segregation of Kanamycin resistance in Arabidopsis gametophytic factor 1 (gfa1) mutants: A genetic, developmental, and molecular analysis." Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/266592.
Повний текст джерелаSanta-Rosa, Sandra. "Desenvolvimento floral e do óvulo e aspectos da reprodução em Aechmea sp. e Vriesea sp. (Bromeliaceae)." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/64/64133/tde-14062016-110325/.
Повний текст джерелаThe use of bromeliads has grown in the ornamental market, however many native species are threatened, mostly due to human impacts. Basic information about the species is essential to support breeding and conservation programs, which combined with biotechnological tools allow for the innovative approaches to breeding methods. The objective of this study was to characterize the floral development and reproductive aspects of the ornamental species Aechmea correia-araujoi, Aechmea gamosepala, Vriesea ensiformis and Vriesea saundersii, with detais on floral morphology and anatomy, reproductive aspects involved in pollination. For the Aechmea species the gametophytic development was characterized, as well as the cellular changes that occur during the development of the male gametophyte, characterizing the distribution pattern of pectin and arabinogalactan proteins (AGPs), for biotechnological applications. The plants were characterized by observations of the material in the greenhouse and floral organs were described using microscopic techniques. The flowers are actinomorphic, trimerous, dichlamydeous, heterochlamydeous, with double petal appendages, six stamens, gamocarpelar, tricarpellate ovary, with septal nectaries and a large number of ovules. Aspects of the floral biology involved in reproduction were assessed by stigma receptivity, pollen morphology, viability and in vitro pollen grain germination. The species produce large amounts of pollen grains with high reproductive capacity, pollen viability higher than 93%, in vitro germination higher than 80% and stigma is receptive throughout the day. The floral ontogeny of A. correia-araujoi is centripetal, the primordia develop sepals, petals, stamens and pistil. The petal appendages are formed in the final stages of floral development. The cellular changes, and the distribution pattern of pectins and AGPs were characterized by cytochemical analysis with IKI and DAPI, and immunocytochemistry and immunofluorescence with antibodies for RNA, esterified pectins (JIM7) de-esterified (JIM5) and AGPs (LM2 , LM6, MAC207, JIM13, JIM14) and analyzed by confocal microscopy. Various spatio-temporal distribution patterns of pectins and AGPs were characterized and may be used as male gametophyte development markers. The observations made in this work provide data on reproductive aspects of the species studied, and can be further used in breeding and conservation programs, and haploid production
Kerim, Tursun. "Proteome analysis of male gametophyte development in rice anthers." Phd thesis, 2003. http://hdl.handle.net/1885/9219.
Повний текст джерелаREŇÁK, David. "Role of transcription factors in early male gametophyte development of Arabidopsis." Doctoral thesis, 2011. http://www.nusl.cz/ntk/nusl-55691.
Повний текст джерелаHsu, Wei-Han, and 許巍瀚. "Functional analysis of genes regulating cell division and gametophyte development in Arabidopsis." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/tuje6h.
Повний текст джерела國立中興大學
生物科技學研究所
100
How to suppress the cell division in the differentiated cells but not the meristematic cells is largely unknown in plants. The family of Yippee-like (YPEL) genes has been found in various eukaryote species. However, no study on YPEL genes has been reported in plant species. In this study, an Arabidopsis YPEL gene AtYIP1 was characterized. The promoter::GUS assay indicated that AtYIP1 mRNA was constitutively expressed in all tissues except meristematic cells and the AtYIP1 proteins were degraded constantly in cells without further division. Hastened growth and increased size and cell number of leaf were observed in 35S::AtYIP1 RNAi plants. By contrast, growth in the 35S::AtYIP1 plants ectopically expressing AtYIP1 was significantly inhibited. The anatomical analysis revealed that the severe 35S::AtYIP1 mutant phenotype is primarily due to the lack of the cell division in both shoot and root apical meristem. These results revealed a repressor role for AtYIP1 in preventing cell division in Arabidopsis. This assumption was further supported by the suppression of the cells growth for tobacco cell line BY-2 and human embryonic kidney cell line HEK 293T after transfection with flag-tagged AtYIP1. Furthermore, AtYIP1 proteins were found to be able to suppress the abnormal cell division for differentiated cells by entering nucleus and bind to DNA. Our data represents a novel finding that a plant gene is able to suppress cell division and growth in both plant and animal system. (Chapter 1) Arabidopsis AGL13 is the gene classified as AGL6 lineage of MIKC type MADS-box gene family. Our previous study indicated that AGL13 expression was specifically detected from the initiation to maturation of both pollen and ovules. Ectopic expression of AGL13 RNAi construct was found to cause sterility by inducing the production of flowers with defective pollen and ovules in transgenic Arabidopsis plants. In this study, two types of pollen in equal numbers were found in 35S::AGL13 RNAi/qrt1-2 tetrads. The first type resembles wild-type whereas the second type is reduced in size with a flat or collapsed shape, suggesting that the development of the pollen grains that carried the 35S::AGL13 RNAi was arrested during meiosis. The viability of the wild-type like pollen in AGL13 RNAi plants was tested by adhesion assay and pollination assay. These data indicated that AGL13 not only regulates pollen development but also controls the tapetum function for exine formation. The enhancement of the alteration of pollen development, the sterility of the plants and the flower organ formation in AGL13:SRDX (containing a suppression motif) transgenic plants suggested that AGL13 acts as a repressor. Furthermore, similar defects in floral organs was observed in AGL13:SRDX and SEP2:SRDX plants which was caused by the suppression of the expression for A, B and C function MADS-box genes. AGL13 could interact with B, C function MADS-box protein and form complex to regulated downstream genes expression, including the pollen developing and tapetum formation genes. (Chapter 2) Finally, series systems of binary vectors have been generated for plant molecular cloning and functional study. All vectors share the same restriction enzyme cloning sites, and contain different combinations of promoters, fusion tags and selection markers. These vectors can be applied to the experimental assays of ectopic expression, RNA silencing, fluorescent tags fusion, heat inducible expression, monocot transformation, dominant negative repression, dominant positive activation, trans-expression. New vectors provided the additional construction procedures for the lab and the experiment assay could be designed with systematically work through standard operating procedure (SOP). (Chapter 3)
Anderson, Cindy Louise. "Gametophyte development in Cheilanthes Viridis Var. Glauca (adiantaceae) with special reference to Apogamy." Thesis, 1992. http://hdl.handle.net/10539/22179.
Повний текст джерелаThe gametophyte generation of the fern life cycle is initiated with the formation of spores. The spores of C. viridis (Fonsic) Swarts var. glaeca (Sim) schelp Anthony are trilete and have a cristate spore wall ornamentation. Under favourable conditions the spores of C. viridis var. glauca show polar germination [Abbreviated Abstract. Open document to view full version]
GR2017
Tai, Shih-Hsin, and 戴世昕. "Aquaculture Development of different generation of Thalloid Sporophyte and Gametophyte of Grateloupia taiwanensis." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/85119990204169529472.
Повний текст джерела國立臺灣大學
漁業科學研究所
101
Grateloupia is a commercial macroalgal which belonging to the phyla of Rhodophyta under the order of Halymeniales. Field collection from the intertidal zone of Taiwan North-eastern coast, Grateloupia has been widely consumed as a delicacy by the local people. Wild Grateloupia was hand-picked by snorkelers in an inefficient way. Thus, the production of Grateloupia was limited and unable to meet the demand from the market. Despite this fact, very few researches on the cultivation of Grateloupia were done on the production of Grateloupia at commercial scale. In this study, the propagation of Grateloupia taiwanensis nodulous filament for germ stock and seedling development was investigated. The nodulous filaments were prepared from germinating carporspores and tetraspores separately. Discoid crust from germinating spores were detached from the substrat, and maintained in enriched medium. Subsequently, various conditions to scale-up the production of nodulus filament cultures were determined. The nodulus filaments were blended into small fragments which were capable in forming new discoid crusts under appropriate conditions. At 20℃, under high illumination of light (7000 lux), young shoots formed from the crusts. The young shoots were transferred to outdoor environment for further growth under appropriate conditions. It was also observed that diploid nodulus filaments germinated from carpospores grew better at higher temperature compared to the haploid nodulous filaments, which were germinated from tetraspores. Most of the discoid crusts formed from diploid nodulous filaments and carpospores were smaller in size, and were easily detached from substrate. Therefore, we suggest that nodulus filaments from detached diploid discoid crusts is an ideal source of seedlings which can be cultivated in suspension. During its growing season, the length of thalli developed from the diploid nodulus filaments reached about 10-20 cm. However, the morphology of the thallus is significantly different from those collected from the field. We suggest that the indoor cultivation of seedling sources to be improved at larger scale. The life cycle of Grateloupia may also can be determined artificially using this technique.
[Verfasser], Kanok-orn Srilunchang. "Molecular characterization and identification of genes involved in maize female gametophyte development / vorgelegt von Kanok-orn Srilunchang." 2009. http://d-nb.info/997895004/34.
Повний текст джерелаDaigle, Caroline. "Expansion d'une nouvelle famille de protéines kinases (MAPKKKs) impliquée dans le développement reproductif chez les Solanacées." Thèse, 2016. http://hdl.handle.net/1866/18509.
Повний текст джерелаMitogen-Activated Protein Kinases (MAPKs) signaling cascades are found in all Eucaryotes and allow signal transduction from the outside of the cell to the inside. In plants, they are particularly numerous and play roles in several signaling processes, including stress responses and response to developmental cues. Their system involves a phosphorelay: they interact with each other to transfer a phosphate group. It starts with an activated MAPKKK, which transfers the phosphate group to a MAPKK (MKK), then this MKK transfers the signal to a MAPK (MPK), which ends this relay by phosphorylating transcription factors or any other proteins that will, in a way or an other, change the cell response according to the signal. During the last few years, many MAPKs members have been studied for their role in plants sexual reproduction. Some mutants were characterized, but until now, our knowledge of complete signaling cascades is very limited. Previous studies in our lab have shown that two MAPKKKs from the MEKK subfamily, ScFRK1 and ScFRK2, are important for male and female gametophytes development in Solanum chacoense, a wild diploid potato species. Genes that are the most orthologous to ScFRK1 and ScFRK2 in Arabidopsis thaliana, AtMAPKKK19, 20 and 21, do not seem to play the same roles in reproduction, which led us to make the hypothesis that in solanaceous species, at least in S. chacoense, there is one MAPKKK family that is different and not present in A. thaliana. At first, we did analyze the genomes/transcriptomes/proteomes of 15 species from different clads of the plant kingdom to find all the members of the MEKK subfamily of MAPKKKs in order to study their phylogenetic relationship. We then observed that ScFRK1 and ScFRK2 are included in a large monophyletic group which was called the FRK class (Fertilization Related Kinase). Moreover, we also observed that this class has considerably expanded within the solanaceous species, compared to other species like A. thaliana, poplar, cotton or grape vine. The FRK class is totally absent in the monocot species studied (rice and maize) and only one member is found in the basal angiosperm Amborella trichopoda. This phylogenetic analysis led us to ask questions about the origins of the FRK class and its role inside the Solanaceae family. Secondly, we characterized ScFRK3, a third member of the FRK class in S. chacoense, which is also involved, as its two FRK sisters, in male and female gametophytes development. From its expression pattern to the establishment of a potential signaling cascade, analysis and phenotyping of ScFRK3 mutant lines, many experiments were realized in order to understand the role of ScFRK3 in S. chacoense sexual reproduction. Overall, the appearance of this new and expanded class of MEKKs questions its specific role in comparison to other species that have much lesser members, mainly when compared to the model plant A. thaliana, which harbor only a fifth of the FRKs found in solanaceous species.
Klodová, Božena. "Studie tvorby dimerů komplexu asociovaného s nascentním polypeptidem a jeho efektorů v huseníčku rolním." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-405573.
Повний текст джерелаLoubert-Hudon, Audrey. "Implication du peptide ScRALF3 dans le développement du gamétophyte femelle chez Solanum chacoense." Thèse, 2012. http://hdl.handle.net/1866/8972.
Повний текст джерелаDevelopment coordination through intercellular communication is essential for plant reproduction. Several studies show that communication between embryo sac and maternal tissue, the sporophyte, is essential to the development of gametes. These molecules, peptides or other actors involved in these signaling pathways and their mode of action remains unclear. Genes encoding small secreted RALF peptides specifically or ubiquitously expressed throughout the plant are good candidates to allow these cell-cell communications. Thirteen RALF-like genes have been isolated at present from the wild potato Solanum chacoense. Now, we show that one of these, ScRALF3, is involved in the polarization of the embryo sac and the synchronicity of mitotic divisions to ensure the formation of a functional mature female gametophyte. Since it is specifically expressed in the integument of the ovule, ScRALF3 is an ideal candidate to regulate cell-cell communication between the sporophyte and the gametophyte, e.g., the embryo sac.
Barke, Birthe Hilkka. "The Evolutionary Establishment of Apomixis in Hybrids of the Ranunculus auricomus Complex: Developmental and Cytogenetic Studies." Thesis, 2019. http://hdl.handle.net/21.11130/00-1735-0000-0005-13DD-D.
Повний текст джерела