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Endocytic Pathways and Recycling in Growing Pollen Tubes
Pollen tube growth is based on transport of secretory vesicles into the apical region where they fuse with a small area of the plasma membrane. The amount of secretion greatly exceeds the quantity of membrane required for growth. Mechanisms of membrane retrieval have recently been demonstrated and p...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4844360/ https://www.ncbi.nlm.nih.gov/pubmed/27137373 http://dx.doi.org/10.3390/plants2020211 |
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author | Onelli, Elisabetta Moscatelli, Alessandra |
author_facet | Onelli, Elisabetta Moscatelli, Alessandra |
author_sort | Onelli, Elisabetta |
collection | PubMed |
description | Pollen tube growth is based on transport of secretory vesicles into the apical region where they fuse with a small area of the plasma membrane. The amount of secretion greatly exceeds the quantity of membrane required for growth. Mechanisms of membrane retrieval have recently been demonstrated and partially characterized using FM (Fei Mao) dyes or charged nanogold. Both these probes reveal that clathrin-dependent and -independent endocytosis occur in pollen tubes and are involved in distinct degradation pathways and membrane recycling. Exocytosis, internalization and sorting of PM proteins/lipids depend on the integrity of the actin cytoskeleton and are involved in actin filament organization. However, some kinds of endocytic and exocytic processes occurring in the central area of the tip still need to be characterized. Analysis of secretion dynamics and data derived from endocytosis highlight the complexity of events occurring in the tip region and suggest a new model of pollen tube growth. |
format | Online Article Text |
id | pubmed-4844360 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-48443602016-04-29 Endocytic Pathways and Recycling in Growing Pollen Tubes Onelli, Elisabetta Moscatelli, Alessandra Plants (Basel) Review Pollen tube growth is based on transport of secretory vesicles into the apical region where they fuse with a small area of the plasma membrane. The amount of secretion greatly exceeds the quantity of membrane required for growth. Mechanisms of membrane retrieval have recently been demonstrated and partially characterized using FM (Fei Mao) dyes or charged nanogold. Both these probes reveal that clathrin-dependent and -independent endocytosis occur in pollen tubes and are involved in distinct degradation pathways and membrane recycling. Exocytosis, internalization and sorting of PM proteins/lipids depend on the integrity of the actin cytoskeleton and are involved in actin filament organization. However, some kinds of endocytic and exocytic processes occurring in the central area of the tip still need to be characterized. Analysis of secretion dynamics and data derived from endocytosis highlight the complexity of events occurring in the tip region and suggest a new model of pollen tube growth. MDPI 2013-04-03 /pmc/articles/PMC4844360/ /pubmed/27137373 http://dx.doi.org/10.3390/plants2020211 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Review Onelli, Elisabetta Moscatelli, Alessandra Endocytic Pathways and Recycling in Growing Pollen Tubes |
title | Endocytic Pathways and Recycling in Growing Pollen Tubes |
title_full | Endocytic Pathways and Recycling in Growing Pollen Tubes |
title_fullStr | Endocytic Pathways and Recycling in Growing Pollen Tubes |
title_full_unstemmed | Endocytic Pathways and Recycling in Growing Pollen Tubes |
title_short | Endocytic Pathways and Recycling in Growing Pollen Tubes |
title_sort | endocytic pathways and recycling in growing pollen tubes |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4844360/ https://www.ncbi.nlm.nih.gov/pubmed/27137373 http://dx.doi.org/10.3390/plants2020211 |
work_keys_str_mv | AT onellielisabetta endocyticpathwaysandrecyclingingrowingpollentubes AT moscatellialessandra endocyticpathwaysandrecyclingingrowingpollentubes |