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Organisation of the endosperm and endosperm-placenta syncytia in bladderworts (Utricularia, Lentibulariaceae) with emphasis on the microtubule arrangement

Organisation of the endosperm and endosperm-placenta ...

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dc.contributor.author Płachno, Bartosz [SAP11019179] pl
dc.contributor.author Świątek, Piotr pl
dc.contributor.author Sas-Nowosielska, Hanna pl
dc.contributor.author Kozieradzka-Kiszkurno, Małgorzata pl
dc.date.accessioned 2015-06-29T08:44:47Z
dc.date.available 2015-06-29T08:44:47Z
dc.date.issued 2013 pl
dc.identifier.issn 0033-183X pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/10593
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa *
dc.rights.uri http://creativecommons.org/licenses *
dc.title Organisation of the endosperm and endosperm-placenta syncytia in bladderworts (Utricularia, Lentibulariaceae) with emphasis on the microtubule arrangement pl
dc.type JournalArticle pl
dc.description.physical 863-873 pl
dc.abstract.en Multinucleate cells play an important role in higher plants, especially during reproduction; however, the configurations of their cytoskeletons, which are formed as a result of mitosis without cytokinesis, have mainly been studied in coenocytes. Previous authors have proposed that in spite of their developmental origin (cell fusion or mitosis without cytokinesis), in multinucleate plant cells, radiating microtubules determine the regular spacing of individual nuclei. However, with the exception of specific syncytia induced by parasitic nematodes, there is no information about the microtubular cytoskeleton in plant heterokaryotic syncytia, i.e. when the nuclei of fused cells come from different cell pools. In this paper, we describe the arrangement of microtubules in the endosperm and special endosperm–placenta syncytia in two Utricularia species. These syncytia arise from different progenitor cells, i.e. cells of the maternal sporophytic nutritive tissue and the micropylar endosperm haustorium (both maternal and paternal genetic material). The development of the endosperm in the two species studied was very similar. We describe microtubule configurations in the three functional endosperm domains: the micropylar syncytium, the endosperm proper and the chalazal haustorium. In contrast to plant syncytia that are induced by parasitic nematodes, the syncytia of Utricularia had an extensive microtubular network. Within each syncytium, two giant nuclei, coming from endosperm cells, were surrounded by a three-dimensional cage of microtubules, which formed a huge cytoplasmic domain. At the periphery of the syncytium, where new protoplasts of the nutritive cells join the syncytium, the microtubules formed a network which surrounded small nuclei from nutritive tissue cells and were also distributed through the cytoplasm. Thus, in the Utricularia syncytium, there were different sized cytoplasmic domains, whose architecture depended on the source and size of the nuclei. The endosperm proper was isolated from maternal (ovule) tissues by a cuticle layer, so the syncytium and chalazal haustorium were the only way for nutrients to be transported from the maternal tissue towards the developing embryo. pl
dc.subject.en plant reproduction pl
dc.subject.en embryology pl
dc.subject.en cellular endosperm pl
dc.subject.en haustorium pl
dc.subject.en Utricularia pl
dc.subject.en aquatic carnivorous plants pl
dc.description.volume 250 pl
dc.description.number 4 pl
dc.identifier.doi 10.1007/s00709-012-0468-5 pl
dc.identifier.eissn 1615-6102 pl
dc.title.journal Protoplasma pl
dc.language.container eng pl
dc.affiliation Wydział Biologii i Nauk o Ziemi : Instytut Botaniki pl
dc.subtype Article pl
dc.rights.original CC-BY; inne; ostateczna wersja wydawcy; w momencie opublikowania; 0; pl
dc.identifier.project ROD UJ / P pl
.pointsMNiSW [2013 A]: 25


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Udzielam licencji. Uznanie autorstwa Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa