Pollen, Tapetum, and Orbicule Development in Colletia paradoxa and Discaria americana (Rhamnaceae)

Tapetum, orbicule, and pollen grain ontogeny in Colletia paradoxa and Discaria americana were studied with transmission electron microscopy (TEM). The ultrastructural changes observed during the different stages of development in the tapetal cells and related to orbicule and pollen grain formation a...

Descripción completa

Detalles Bibliográficos
Autores principales: Gotelli, M., Galati, B., Medan, D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Scientific World Journal 2012
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3354755/
https://www.ncbi.nlm.nih.gov/pubmed/22645479
http://dx.doi.org/10.1100/2012/948469
_version_ 1782233268562690048
author Gotelli, M.
Galati, B.
Medan, D.
author_facet Gotelli, M.
Galati, B.
Medan, D.
author_sort Gotelli, M.
collection PubMed
description Tapetum, orbicule, and pollen grain ontogeny in Colletia paradoxa and Discaria americana were studied with transmission electron microscopy (TEM). The ultrastructural changes observed during the different stages of development in the tapetal cells and related to orbicule and pollen grain formation are described. The proorbicules have the appearance of lipid globule, and their formation is related to the endoplasmic reticulum of rough type (ERr). This is the first report on the presence of orbicules in the family Rhamnaceae. Pollen grains are shed at the bicellular stage.
format Online
Article
Text
id pubmed-3354755
institution National Center for Biotechnology Information
language English
publishDate 2012
publisher The Scientific World Journal
record_format MEDLINE/PubMed
spelling pubmed-33547552012-05-29 Pollen, Tapetum, and Orbicule Development in Colletia paradoxa and Discaria americana (Rhamnaceae) Gotelli, M. Galati, B. Medan, D. ScientificWorldJournal Research Article Tapetum, orbicule, and pollen grain ontogeny in Colletia paradoxa and Discaria americana were studied with transmission electron microscopy (TEM). The ultrastructural changes observed during the different stages of development in the tapetal cells and related to orbicule and pollen grain formation are described. The proorbicules have the appearance of lipid globule, and their formation is related to the endoplasmic reticulum of rough type (ERr). This is the first report on the presence of orbicules in the family Rhamnaceae. Pollen grains are shed at the bicellular stage. The Scientific World Journal 2012-05-02 /pmc/articles/PMC3354755/ /pubmed/22645479 http://dx.doi.org/10.1100/2012/948469 Text en Copyright © 2012 M. Gotelli et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Gotelli, M.
Galati, B.
Medan, D.
Pollen, Tapetum, and Orbicule Development in Colletia paradoxa and Discaria americana (Rhamnaceae)
title Pollen, Tapetum, and Orbicule Development in Colletia paradoxa and Discaria americana (Rhamnaceae)
title_full Pollen, Tapetum, and Orbicule Development in Colletia paradoxa and Discaria americana (Rhamnaceae)
title_fullStr Pollen, Tapetum, and Orbicule Development in Colletia paradoxa and Discaria americana (Rhamnaceae)
title_full_unstemmed Pollen, Tapetum, and Orbicule Development in Colletia paradoxa and Discaria americana (Rhamnaceae)
title_short Pollen, Tapetum, and Orbicule Development in Colletia paradoxa and Discaria americana (Rhamnaceae)
title_sort pollen, tapetum, and orbicule development in colletia paradoxa and discaria americana (rhamnaceae)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3354755/
https://www.ncbi.nlm.nih.gov/pubmed/22645479
http://dx.doi.org/10.1100/2012/948469
work_keys_str_mv AT gotellim pollentapetumandorbiculedevelopmentincolletiaparadoxaanddiscariaamericanarhamnaceae
AT galatib pollentapetumandorbiculedevelopmentincolletiaparadoxaanddiscariaamericanarhamnaceae
AT medand pollentapetumandorbiculedevelopmentincolletiaparadoxaanddiscariaamericanarhamnaceae

Ejemplares similares