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Are obligatory apomicts invested in the pollen tube transmitting tissue? : comparison of the micropyle ultrastructure between sexual and apomictic dandelions (Asteraceae, Lactuceae)

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Are obligatory apomicts invested in the pollen tube transmitting tissue? : comparison of the micropyle ultrastructure between sexual and apomictic dandelions (Asteraceae, Lactuceae)

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dc.contributor.author Płachno, Bartosz [SAP11019179] pl
dc.contributor.author Świątek, Piotr pl
dc.contributor.author Kozieradzka-Kiszkurno, Małgorzata pl
dc.contributor.author Majeský, Ľuboš pl
dc.contributor.author Marciniuk, Jolanta pl
dc.contributor.author Stolarczyk, Piotr pl
dc.date.accessioned 2016-01-12T14:31:25Z
dc.date.available 2016-01-12T14:31:25Z
dc.date.issued 2015 pl
dc.identifier.issn 0033-183X pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/19312
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa *
dc.rights.uri http://creativecommons.org/licenses *
dc.title Are obligatory apomicts invested in the pollen tube transmitting tissue? : comparison of the micropyle ultrastructure between sexual and apomictic dandelions (Asteraceae, Lactuceae) pl
dc.type JournalArticle pl
dc.description.physical 1325-1333 pl
dc.abstract.en With the exception of the sunflower, little information concerning the micropyle ultrastructure of the family Asteraceae is available. The aim of our study was to compare the micropyle structure in amphimictic and apomictic dandelions. Ultrastructural studies using buds and flowers during anthesis have been done on the micropyle of the sexual and apomictic Taraxacum. In all of the species that were examined, the micropylar canal was completely filled with ovule transmitting tissue and the matrix that was produced by these cells. The ovule transmitting tissue was connected to the ovarian transmitting tissue. The micropyle was asymmetrical because the integument epidermis that forms the transmitting tissue was only on the funicular side. There was a cuticle between the obturator cells and epidermal cells on the other side of integument. The micropylar transmitting tissue cells and theirs matrix reached the synergid apex. The cytoplasm of the transmitting tissue cells was especially rich in rough endoplasmic reticulum (ER), dictyosomes, and mitochondria. No major differences were detected between the micropyle structure of the amphimictic and apomictic species; thus, a structural reduction of obturator does not exist. The ovule transmitting tissue is still active in apomictic dandelions despite the presence of the embryo and endosperm. Differences and similarities between the micropyle structure in the Asteraceae that have been studied to date are discussed. pl
dc.subject.en ovule pl
dc.subject.en apomixis pl
dc.subject.en integument pl
dc.subject.en transmitting tissue pl
dc.subject.en gynoecium pl
dc.subject.en dandelions pl
dc.subject.en Asteraceae pl
dc.description.volume 252 pl
dc.description.number 5 pl
dc.identifier.doi 10.1007/s00709-015-0765-x 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 [2015 A]: 30


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