Cargando…
Arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower
BACKGROUND AND AIMS: Stigmatic receptivity plays a clear role in pollination dynamics; however, little is known about the factors that confer to a stigma the competence to be receptive for the germination of pollen grains. In this work, a developmental approach is used to evaluate the acquisition of...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2012
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3400445/ https://www.ncbi.nlm.nih.gov/pubmed/22652420 http://dx.doi.org/10.1093/aob/mcs116 |
_version_ | 1782238491451588608 |
---|---|
author | Losada, Juan M. Herrero, María |
author_facet | Losada, Juan M. Herrero, María |
author_sort | Losada, Juan M. |
collection | PubMed |
description | BACKGROUND AND AIMS: Stigmatic receptivity plays a clear role in pollination dynamics; however, little is known about the factors that confer to a stigma the competence to be receptive for the germination of pollen grains. In this work, a developmental approach is used to evaluate the acquisition of stigmatic receptivity and its relationship with a possible change in arabinogalactan-proteins (AGPs). METHODS: Flowers of the domestic apple, Malus × domestica, were assessed for their capacity to support pollen germination at different developmental stages. Stigmas from these same stages were characterized morphologically and different AGP epitopes detected by immunocytochemistry. KEY RESULTS: Acquisition of stigmatic receptivity and the secretion of classical AGPs from stigmatic cells occurred concurrently and following the same spatial distribution. While in unpollinated stigmas AGPs appeared unaltered, in cross-pollinated stigmas AGPs epitopes vanished as pollen tubes passed by. CONCLUSIONS: The concurrent secretion of AGPs with the acquisition of stigmatic receptivity, together with the differential response in unpollinated and cross-pollinated pistils point out a role of AGPs in supporting pollen tube germination and strongly suggest that secretion of AGPs is associated with the acquisition of stigma receptivity. |
format | Online Article Text |
id | pubmed-3400445 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-34004452012-07-19 Arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower Losada, Juan M. Herrero, María Ann Bot Original Articles BACKGROUND AND AIMS: Stigmatic receptivity plays a clear role in pollination dynamics; however, little is known about the factors that confer to a stigma the competence to be receptive for the germination of pollen grains. In this work, a developmental approach is used to evaluate the acquisition of stigmatic receptivity and its relationship with a possible change in arabinogalactan-proteins (AGPs). METHODS: Flowers of the domestic apple, Malus × domestica, were assessed for their capacity to support pollen germination at different developmental stages. Stigmas from these same stages were characterized morphologically and different AGP epitopes detected by immunocytochemistry. KEY RESULTS: Acquisition of stigmatic receptivity and the secretion of classical AGPs from stigmatic cells occurred concurrently and following the same spatial distribution. While in unpollinated stigmas AGPs appeared unaltered, in cross-pollinated stigmas AGPs epitopes vanished as pollen tubes passed by. CONCLUSIONS: The concurrent secretion of AGPs with the acquisition of stigmatic receptivity, together with the differential response in unpollinated and cross-pollinated pistils point out a role of AGPs in supporting pollen tube germination and strongly suggest that secretion of AGPs is associated with the acquisition of stigma receptivity. Oxford University Press 2012-08 2012-05-31 /pmc/articles/PMC3400445/ /pubmed/22652420 http://dx.doi.org/10.1093/aob/mcs116 Text en © The Author 2012. Published by Oxford University Press on behalf of the Annals of Botany Company. http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited |
spellingShingle | Original Articles Losada, Juan M. Herrero, María Arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower |
title | Arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower |
title_full | Arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower |
title_fullStr | Arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower |
title_full_unstemmed | Arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower |
title_short | Arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower |
title_sort | arabinogalactan-protein secretion is associated with the acquisition of stigmatic receptivity in the apple flower |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3400445/ https://www.ncbi.nlm.nih.gov/pubmed/22652420 http://dx.doi.org/10.1093/aob/mcs116 |
work_keys_str_mv | AT losadajuanm arabinogalactanproteinsecretionisassociatedwiththeacquisitionofstigmaticreceptivityintheappleflower AT herreromaria arabinogalactanproteinsecretionisassociatedwiththeacquisitionofstigmaticreceptivityintheappleflower |