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Actin cytoskeleton in the extra-ovular embryo sac of Utricularia nelumbifolia (Lentibulariaceae)
The actin cytoskeleton in the mature female gametophyte of angiosperms has been examined in only a few dicot and monocot species. The main purposes of this study were to identify how the actin cytoskeleton is arranged in the mature extra-ovular embryo sac in Utricularia nelumbifolia (Lentibulariacea...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Vienna
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3382281/ https://www.ncbi.nlm.nih.gov/pubmed/21786167 http://dx.doi.org/10.1007/s00709-011-0306-1 |
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author | Płachno, Bartosz Jan Świątek, Piotr |
author_facet | Płachno, Bartosz Jan Świątek, Piotr |
author_sort | Płachno, Bartosz Jan |
collection | PubMed |
description | The actin cytoskeleton in the mature female gametophyte of angiosperms has been examined in only a few dicot and monocot species. The main purposes of this study were to identify how the actin cytoskeleton is arranged in the mature extra-ovular embryo sac in Utricularia nelumbifolia (Lentibulariaceae). We found that the extra-ovular part of the central cell has a well-developed actin cytoskeleton: actin microfilaments formed of long strands which run longitudinally or transversally to the long axis of the embryo sac. The exerted part of the central cell, which is exposed to the environment of the ovary chamber, is highly vacuolated and in the thin peripheral cytoplasm possesses a complicated network of actin microfilaments. The epidermal cells of the placenta that are in contact with the extra-ovular part of the embryo sac are crushed. The ultrastructure data of these cells are presented. We detected the accumulation of the actin cytoskeleton between the micropylar parts of the synergids and the extra-ovular part of central cell. This actin accumulation is unusual because in typical angiosperms the micropylar parts of the synergids form the apex of the female gametophyte. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00709-011-0306-1) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-3382281 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Springer Vienna |
record_format | MEDLINE/PubMed |
spelling | pubmed-33822812012-07-05 Actin cytoskeleton in the extra-ovular embryo sac of Utricularia nelumbifolia (Lentibulariaceae) Płachno, Bartosz Jan Świątek, Piotr Protoplasma Original Article The actin cytoskeleton in the mature female gametophyte of angiosperms has been examined in only a few dicot and monocot species. The main purposes of this study were to identify how the actin cytoskeleton is arranged in the mature extra-ovular embryo sac in Utricularia nelumbifolia (Lentibulariaceae). We found that the extra-ovular part of the central cell has a well-developed actin cytoskeleton: actin microfilaments formed of long strands which run longitudinally or transversally to the long axis of the embryo sac. The exerted part of the central cell, which is exposed to the environment of the ovary chamber, is highly vacuolated and in the thin peripheral cytoplasm possesses a complicated network of actin microfilaments. The epidermal cells of the placenta that are in contact with the extra-ovular part of the embryo sac are crushed. The ultrastructure data of these cells are presented. We detected the accumulation of the actin cytoskeleton between the micropylar parts of the synergids and the extra-ovular part of central cell. This actin accumulation is unusual because in typical angiosperms the micropylar parts of the synergids form the apex of the female gametophyte. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00709-011-0306-1) contains supplementary material, which is available to authorized users. Springer Vienna 2011-07-24 2012 /pmc/articles/PMC3382281/ /pubmed/21786167 http://dx.doi.org/10.1007/s00709-011-0306-1 Text en © The Author(s) 2011 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Original Article Płachno, Bartosz Jan Świątek, Piotr Actin cytoskeleton in the extra-ovular embryo sac of Utricularia nelumbifolia (Lentibulariaceae) |
title | Actin cytoskeleton in the extra-ovular embryo sac of Utricularia nelumbifolia (Lentibulariaceae) |
title_full | Actin cytoskeleton in the extra-ovular embryo sac of Utricularia nelumbifolia (Lentibulariaceae) |
title_fullStr | Actin cytoskeleton in the extra-ovular embryo sac of Utricularia nelumbifolia (Lentibulariaceae) |
title_full_unstemmed | Actin cytoskeleton in the extra-ovular embryo sac of Utricularia nelumbifolia (Lentibulariaceae) |
title_short | Actin cytoskeleton in the extra-ovular embryo sac of Utricularia nelumbifolia (Lentibulariaceae) |
title_sort | actin cytoskeleton in the extra-ovular embryo sac of utricularia nelumbifolia (lentibulariaceae) |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3382281/ https://www.ncbi.nlm.nih.gov/pubmed/21786167 http://dx.doi.org/10.1007/s00709-011-0306-1 |
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