ArticlePlant signaling & behavior2006
Correlative Analysis of [Ca](C) and Apical Secretion during Pollen Tube Growth and Reorientation.
Article in Plant signaling & behavior, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 17 citations in OpenAlex.
- The Light-Controlled Release of 2-fluoro-l-fucose, an Inhibitor of the Root Cell Elongation, from a nitrobenzyl-caged Derivative.International journal of molecular sciences · 2023Article
- Calcium, Metaphors, and Zeitgeist in Plant Sciences.Plant physiology · 2016Article
- Measuring Exocytosis Rate Using Corrected Fluorescence Recovery After Photoconversion.Traffic (Copenhagen, Denmark) · 2016Article
- Ion and lipid signaling in apical growth-a dynamic machinery responding to extracellular cues.Frontiers in plant science · 2015Article
- Invasive cells in animals and plants: searching for LECA machineries in later eukaryotic life.Biology direct · 2013Review
- MAP18 regulates the direction of pollen tube growth in Arabidopsis by modulating F-actin organization.The Plant cell · 2013Article
- Localization of Arabidopsis SYP125 syntaxin in the plasma membrane sub-apical and distal zones of growing pollen tubes.Plant signaling & behavior · 2011Article
- Asymmetric localization of Arabidopsis SYP124 syntaxin at the pollen tube apical and sub-apical zones is involved in tip growth.BMC plant biology · 2010Article
- Arabidopsis phosphatidylinositol-4-monophosphate 5-kinase 4 regulates pollen tube growth and polarity by modulating membrane recycling.The Plant cell · 2008Article
- Imaging of the Yellow Cameleon 3.6 indicator reveals that elevations in cytosolic Ca2+ follow oscillating increases in growth in root hairs of Arabidopsis.Plant physiology · 2008Article
- The block of intracellular calcium release affects the pollen tube development of Picea wilsonii by changing the deposition of cell wall components.Protoplasma · 2008Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The maintenance of a cytosolic free calcium gradient (Ca(2+)](c)) and vesicle secretion in the apex of pollen tubes is essential for growth. It has been postulated that high [Ca(2+)](c) levels promote and confine vesicle fusion with the apical plasma membrane and in this study we performed a correlative analysis of both events using specific fluorescent dyes and confocal scanning microscopy. [Ca(2+)](c) was imaged with Calcium Green-1 10 kDa dextran (CG-1) while secretory events were followed with FM1-43 or FM4-64 in pollen tubes undergoing normal growth and reorientation events.During straight growth (no modification in direction), we found that changes in apical [Ca(2+)](c) accompany changes in apical FM fluorescence indicating a tight coupling between [Ca(2+)](c) and apical secretion. This coupling seems however to be perturbed during periods of reorientation of the pollen tube growth axis. Analysis of apical and sub-apical fluorescent signals during the reorientation events and subsequent re-entry in straight growth indicate that the increase in secretory events (higher fusion rate) precede the increases in [Ca(2+)](c) that should be required for the transduction of the signal.Based on these findings, we discuss a model for membrane secretion and recycling which considers the apical and sub-apical region as a functional area containing all the elements required to promote and sustain growth.
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