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    Wyświetlanie 1-11 z 11
    Tytuł:
    Gametophyte and sporophyte of tree ferns in vitro culture
    Autorzy:
    Goller, K
    Rybczynski, J.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/57657.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    greenhouse collection
    gene bank
    botany
    multiplication
    gametophyte
    spore
    in vitro
    tree fern
    sporophyte
    Opis:
    Experiments had been carried out on gametophytes and very young fronds of sporophytes with application of Murashige and Skoog (1962) medium. The paper described the results of 15 years in vitro experiments on 16 species of tree ferns belonging to various genera: Blechnum, Cibotium, Cyathea and Dicksonia. Genus Cyathea was represented by: C. australis (R.Br.) Domin., C. capensis (L.f.) Sm., C. cooperi (F.Muell.) Domin, C. brownii Domin, C. dealbata (G.Forest) Sw., C. dregei Kunze, C. leichhardtiana (F.Muell.) Copel., C. robertsiana (F.Muell.) Domin., C. schanschin Mart., C. smithii Hook.f. and Cyathea sp. In case of genus Dicksonia only two species were introduced into our experiments: D. fibrosa Colenso and D. sellowiana Hook.. Taxa Blechnum was presented by B. brasiliense Desv. and Cibotium by C. glaucum (Sm.) Hook. and Arn. and C. schiedei Schltdl. and Cham.. The studied species presented various responses on culture conditions depending on the level of stage of development. Time required for spores germination differed between species and took from only a few to 16 weeks. Prothalium formations showed various types of growth presented by marginal meristems. For all investigated species long term gametophyte in vitro cultures was established. Mature gametophyte possessed functional antheridia and archegonia. Spontaneous fertilization helped to establish the culture of young sporophytes. For all species the ex vitro culture in greenhouse collection was established. Manipulation of sucrose content in the medium stimulated the multiplication of gametophytes, but its lack induced formation of gemmae. Apospory was observed when culture of very young fronds was extended for 6 months and new generation of gametophytes was developed. Finally, sporophytes of 12 species were obtained and they have been growing in our greenhouse.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2007, 76, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in distribution of 5 methylcytosine in male and female gametophyte of Hyacinthus orientalis before and after fertilization
    Autorzy:
    Kozlowska, M.
    Niedojadlo, K.
    Bednarska-Kozakiewicz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/80166.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    gene activity
    chromatin structure
    5-methylcytosine
    female gametophyte
    male gametophyte
    seed development
    flowering plant
    Hyacinthus orientalis
    fertilization
    transcriptional activity
    epigenetic factor
    DNA methylation
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Immunolocalization of AGO1 in female gametophyte cells of Hyacinthus orientalis L. before and after fertilization
    Autorzy:
    Niedojadlo, K.
    Mehelewska, M.
    Niedojadlo, J.
    Bednarska-Kozakiewicz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/80092.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    microRNA
    gene expression
    protein-coding gene
    immunolocalization
    AGO1 protein
    female gametophyte
    Hyacinthus orientalis
    fertilization
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of change in the proportion of H1 histone variants on microsporogenesis and development of male gametophyte in transgenic plants of tobacco [Nicotiana tabacum L.]
    Autorzy:
    Slusarczyk, J
    Wierzbicki, A.
    Przewloka, M.
    Tykarska, T.
    Jerzmanowski, A.
    Kuras, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/57064.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    sterile pollen grain
    male
    development
    transgenic plant
    gametophyte
    tobacco
    microsporogenesis disorder
    histone H1
    Nicotiana tabacum
    Opis:
    As continuation of investigations in to the mechanism of the role of the H1 histone, which is a crucial protein component chromosomes of all eukaryotes, transgenic tobacco plants with different levels of the H1 histone variants were examined. Tobacco has six sequential variants of the H1 histone: two major ones (H1A and H1B), constituting ca. 90% of all H1, and four minor ones (H1C, H1D, H1E and H1F), occurring in very small quantities. The following groups of plants were examined: K - control group with a full set of histone variants; -AB -with the A and B variants removed; -ABCD - with the A, B, C and D variants removed; and -CD - with the C and D variants removed. The analysis of microsporogenesis in those plants, based on preparations squeezed in acetoorcein, revealed the asynchronous course of meiosis in -AB and -ABCD plants, occurrence of chromosomal aberration, and, consequently, the formation of sterile pollen grains (accordingly: 84,4% and 81,4%). In -CD plants, the percentage of aberration and sterile pollen grains was similar to the control material. Electron microscope observations of microsporogenesis showed ultrastructural changes. In -AB and -ABCD plants, a major portion of the pollen grains were degraded. The smallest number of degraded pollen grains, in comparison with the control, was found in the -CD group.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2003, 72, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The development of the female gametophyte in Fragaria x ananassa Duch. cv. Selva
    Autorzy:
    Dziadczyk, E.
    Domaciuk, M.
    Nowak, M.
    Szczuka, E.
    Bednara, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/19518.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Megasporogenesis and female gametophyte development were investigated in ovules of the everbearing strawberry Fragaria × ananassa Duch. cv. Selva. Observations of thin sections revealed that ovule development starts from the formation of a nucellus and coincides in time with the beginning of receptacle overgrowth. The most characteristic feature during nucellus differentiation is the formation of a multicellular archesporium, beginning from at least two cells. Analysis of female gametophyte development indicated that in addition to the meiotic mode, female gametophytes develop by an apomeiotic mode of Antennaria type. Asynchronous development of female gametophytes of different origin occurs. The mature, eight-nucleate, seven-celled female gametophyte of meiotic origin is cylindrical and slightly curved. It occupies the central part of the nucellus. The egg apparatus, consisting of an egg cell and two synergids, is formed in the micropylar part of the female gametophyte; the opposite chalazal pole is occupied by antipodal cells. Besides the ovule in which only one seven-celled female gametophyte finally develops, ovules with a different number of cells were observed to initiate female gametophyte development. Some ovules contain a nucellus with a tetrad of linearly arranged megaspores surrounded by enlarged cells, each of which has the potential to develop into an apomictic female gametophyte. After degeneration of some post-meiotic cells or developmentally advanced female gametophytes, some of the chalazal cells initiated female gametophyte development.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2011, 53, 2
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gametophytic self-incompatibility in Rosaceae fruit trees
    Autorzy:
    Ma, C.
    Qu, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/12679736.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Rosaceae
    Malus
    Prunus
    Prunus avium
    Prunus armeniaca
    Prunus dulcis
    Prunus mume
    Prunus salicina
    Pyrus
    Pyrus pyrifolia
    fruit tree
    pollen
    gametophyte
    self-incompatibility
    calcium
    Opis:
    Rosaceae fruit trees are characterized by gametophytic self-incompatibility, with their production typically requiring artificial pollination or pollination tree is required in production. Both of these solutions cause reductions in production efficiency, and self-incompatibility has become a major issue in agricultural biology, and as such, has been extensively studied. In this review, we discuss the relationship between S-RNase content in the style and self-incompatibility, and the role of the SLF gene in stamen-determining factor. Considering mutations in self-compatibility-related genes and self-compatibility in polyploid fruit trees, we discuss the potential mechanisms of self-incompatibility. Based on a preliminary study of the role of pollen tube Ca2+ gradients in self-incompatibility in Pyrus, we propose a new mechanistic model of self-incompatibility taking into account the effect of Ca2+. We also discuss the potential for hormone regulation to be used to control selfincompatibility in Rosaceae fruit trees.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 4; 149-156
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cytoembryology of infertile segregants of the hybrid Lupinus varius L. x L. digitatus Forsk
    Autorzy:
    Kazimierska, E M
    Kazimierski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2048189.pdf
    Data publikacji:
    1995
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Lupinus digitatus
    cytoembryology
    embryology
    interspecific hybrid
    plant genetics
    gametophyte
    sterility
    vacuolation
    sporophyte
    megasporogenesis
    megagametogenesis
    chromosome
    Lupinus varius
    hybrid
    sporogenic cell
    Opis:
    In F₂, F₃ and F₄ generations of one hybrid line of Lupinus varius × L. digitatus, segregation into infertile and fertile plants in the ratio 3:1 was observed. Cytoembryological analyses showed that sterility was caused by irregularities in megasporocyte formation, in megasporogenesis and megagametogenesis. The following abnormalities lead to female sterility: no megasporogenic cells separated in nucelluses; in other nucelluses with megaspore mother cells, these cells underwent vacuolation and died before reduction division. In the megaspore mother cells, in which probably meiosis occurs, the megasporocyte division is irregular; a restitution nucleus is frequently formed after reduction division and such megasporocyte develops into an embryo sac. In 8-nucleate embryo sacs a change in the nucellus polarization was observed, while in rarely encountered embryo sacs the embryo cells underwent vacuolation and then died. Female sterility in the studied segregants is determined genetically, whereas sterilization of reproduction cells is a developing process throughout the period of sporocyte and female gametophyte formation.
    Źródło:
    Journal of Applied Genetics; 1995, 36, 3; 215-227
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    In vitro production of huperzine A and other Lycopodium alkaloids in Huperzia selago through a prothallus culture under the influence of different additives
    Autorzy:
    Szypula, W.J.
    Pietrosiuk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/951220.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    huperzine A
    in vitro production
    Huperzia selago
    gametophyte
    axenic culture
    therapeutic potential
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Transcriptional activity of Petunia calreticulin gene (PhCRT) involved in pistil transmitting tract maturation, progamic phase and double fertilization
    Autorzy:
    Suwinska, A.
    Lenartowski, R.
    Lenartowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/80137.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    double fertilization
    reproductive system
    flowering plant
    sperm cell
    female gametophyte
    homeostasis
    calreticulin
    fluorescent in situ hybridization
    gene expression
    transcriptional activity
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of the pollen in the Antarctic flowering plant Colobanthus quitensis [Kunth] Bartl.
    Rozwoj pylku u antarktycznej rosliny naczyniowej Colobanthus quitensis [Kurth] Bartl.
    Autorzy:
    Gielwanowska, I
    Bochenek, A.
    Szczuka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/26765.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    plant physiology
    pollen development
    microsporogenesis
    male gametophyte
    vascular plant
    tapetal cell
    flowering plant
    Colobanthus quitensis
    Antarctic plant
    Opis:
    Colobanthus quitensis (Kunth) Bartl, produced two types very small bisexual flowers. In the Antarctic natural conditions chasmogamic and cleistogamic flowers most often form five stamina with short filaments. Two microsporangia with a three-layer wall form in the anther. Microspore mother cells, which develop into microspores after meiosis, form inside the microsporangium. Microsporocytes of Colobanthus quitensis are surrounded with a thick callose layer, the special wall. After meiosis, the callose wall is dissolved and microspores are released from the tetrad. The production of proorbicules, orbicules and peritapetal membrane, and the construction of a complex sporoderm with numerous apertural sites were observed. When microspore and pollen protoplasts underwent necrosis, probably as a result of temperature and osmotic stress, sporoderm layers formed around microspores, and the cell tapetum did not disintegrate. However, woody wall layers did not accumulate in endothecium cells.
    Colobanthus quitensis, jedyna dwuliścienna roślina kwiatowa rosnąca w ekstremalnie niesprzyjających warunkach antarktycznej strefy geobotanicznej, wykształca zróżnicowane, obupłciowe kwiaty; chasmogamiczne i kleistogamiczne. Kleistogamia jest tu indukowana niską temperaturą dużą wilgotnością powietrza i silnym wiatrem. W mikrosporangiach Colobanthus quitensis różnicowała się mała liczba mikrospor, co jest cechą typową dla gatunków z kleistogamią. Mikrosporocyty tworzyły bardzo grube kalozowe ściany specjalne. Nie było jednak kalozy w ścianie oddzielającej komórkę generatywną od wegetatywnej. W rozwoju pyłku Colobanthus quitensis zaobserwowano męską jednostkę rozrodczą ze zróżnicowanymi komórkami plemnikowymi. Mniejsza komórka zawierała przede wszystkim mitochondria, a większa głównie piastydy. Dojrzały pyłek wysypywał się z mikrosporangium lub kiełkował na miejscu. Obserwowano trójkomórkowe ziarna pyłku z łagiewkami wewnątrz otwartych pylników.
    Źródło:
    Acta Agrobotanica; 2007, 60, 2
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The beginnings of sexual land plant reproduction – regulation of gene expression involved in archegonia development in dioecious liverwort Pellia endiviifolia sp. B
    Autorzy:
    Sierocka, I.
    Alba, S.
    Karlowski, W.
    Szweykowska-Kulinska, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/80587.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    plant reproduction
    gene expression
    archegonial formation
    dioecious liverwort
    Pellia endiviifolia
    morphological adaptation
    terrestrial environment
    life cycle
    gametophyte
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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