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Pattern of callose deposition during the course of meiotic diplospory in Chondrilla juncea (Asteraceae, Cichorioideae)

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Pattern of callose deposition during the course of meiotic diplospory in Chondrilla juncea (Asteraceae, Cichorioideae)

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dc.contributor.author Musiał, Krystyna [SAP11011970] pl
dc.contributor.author Kościńska-Pająk, Maria [SAP11009134] pl
dc.date.accessioned 2017-06-22T10:08:00Z
dc.date.available 2017-06-22T10:08:00Z
dc.date.issued 2017 pl
dc.identifier.issn 0033-183X pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/41736
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/pl/legalcode *
dc.title Pattern of callose deposition during the course of meiotic diplospory in Chondrilla juncea (Asteraceae, Cichorioideae) pl
dc.type JournalArticle pl
dc.description.physical 1499-1505 pl
dc.description.additional Bibliogr. s. 1504-1505 pl
dc.abstract.en Total absence of callose in the ovules of diplosporous species has been previously suggested. This paper is the first description of callose events in the ovules of Chondrilla juncea, which exhibits meiotic diplospory of the Taraxacum type. We found the presence of callose in the megasporocyte wall and stated that the pattern of callose deposition is dynamically changing during megasporogenesis. At the premeiotic stage, no callose was observed in the ovules. Callose appeared at the micropylar pole of the cell entering prophase of the first meioticdivision restitution but did not surround the megasporocyte. After the formation of a restitution nucleus, a conspicuous callose micropylar cap and dispersed deposits of callose were detected in the megasporocyte wall. During the formation of a diplodyad, the micropylar callose cap decreased and the walls of a newly formed megaspores showed scattered distribution of callose. Within the older diplodyad, callose was mainly accumulated in the wall between megaspores, as well as in the wall of the micropylar cell; however, a dotted fluorescence of callose was also visible in the wall of the chalazal megaspore. Gradual degradation of callose in the wall of the chalazal cell and intense callose accumulation in the wall of the micropylar cell were related to the selection of the functional megaspore. Thus, our findings may suggest that callose fulfills a similar role both during megasporogenesis in sexual angiosperms and in the course of meiotic diplospory in apomicts and seems to form a regulatory interface between reproductive and somatic cells. pl
dc.subject.en apomixis pl
dc.subject.en callose pl
dc.subject.en megasporogenesis pl
dc.subject.en ovule pl
dc.subject.en Chondrilla pl
dc.subject.en rush skeletonweed pl
dc.description.volume 254 pl
dc.description.number 4 pl
dc.identifier.doi 10.1007/s00709-016-1039-y 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 [2017 A]: 30


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Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa