Pollen tube guidance – the long and winding road

@article{Malh1998PollenTG,
  title={Pollen tube guidance – the long and winding road},
  author={R. Malh{\'o}},
  journal={Sexual Plant Reproduction},
  year={1998},
  volume={11},
  pages={242-244}
}
  • R. Malhó
  • Published 1998
  • Biology
  • Sexual Plant Reproduction
Style morphology and pollen tube pathway
TLDR
Subtypes of styles according to the path of the pollen tube are defined, which could be hypothesized that: the open style appeared in the early divergent angiosperms; the closed type of style originated in Asparagales, Poales, and Eudicots; and the semi-closed style seemed to have been lost in Rosids, Ericales, and Gentianales. Expand
Influence of Electric Fields and Conductivity on Pollen Tube Growth assessed via Electrical Lab-on-Chip
TLDR
Surprisingly, the pollen tube response correlated with the conductivity of the growth medium under different AC frequencies—consistent with the notion that the effect of the field on pollen tube growth may be mediated via its effect on the motion of ions. Expand
Electrical Lab-on-a-Chip for Ex Vivo Study on the Influence of Electric Fields on Pollen Cells
TLDR
A low-cost, reusable Electrical Lab-on-a-Chip (ELoC) for investigating the influence of electric fields on growing cells and indicates a significant role of the medium conductivity in controlling the cellular response. Expand
A microfluidic platform for the investigation of elongation growth in pollen tubes
Pollen tubes are an excellent model for the investigation of plant cell growth: they elongate at very high rates and are easily cultured in vitro. One major constraint in the study of pollen tubeExpand
Effects of genotype and stigma development stage on seed set following intra- and inter-specific hybridization of Dianthus spp.
TLDR
Genotype and stigma development are identified as key factors that determine the success of cross-pollination in Dianthus lines. Expand
Factors affecting seed set in the crosses between Dendranthema grandiflorum (Ramat.) Kitamura and its wild species
TLDR
Very few germinated pollen grains on stigmas and abnormal growth of most pollen tubes before fertilization, and embryo abortion are the main factors causing failure of the cross between D. grandiflorum and D. nankingense, whereas only embryo abortion is a main factor resulting in low seed set in the crossBetween D. zawadskii. Expand
Microsystem-Based Study of Pollen-Tube Attractants Secreted by Ovules
Microdevices are developed to resemble the in-vivo micro-environment of ovule fertilization by pollen tubes in model research plant Arabidopsis thaliana. The PDMS-based microdevices are filled withExpand
Calcium in Root Hair Growth
TLDR
This work has shown that a Ca2+-signaling system appears to interact with many of the other components of the tip growth system, including monomeric G-proteins, phospholipases, and the cytoskeleton, helping integrate these activities to facilitate the localization of growth. Expand
Calcium function and distribution during fertilization in angiosperms.
TLDR
Fusion of plant gametes in vitro triggers calcium oscillations evident in both the zygote and primary endosperm during double fertilization that are similar to those in animals. Expand
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References

SHOWING 1-10 OF 24 REFERENCES
Ca2+ channels control the rapid expansions in pulsating growth of Petunia hybrida pollen tubes
TLDR
A hypothetical model for the mechanism that controls pulsating growth in pollen tubes is proposed, which suggests that a certain group of Ca 2+ channels, which is sensitive to La 3+ and Gd 3+ would be responsible for the control of pulsing growth. Expand
Lipids are required for directional pollen-tube growth
TLDR
It is shown that lipids are the essential factor needed for pollen tubes to penetrate the stigma, and that, in the presence of these lipids, pollen tubes will also penetrate leaves. Expand
Pollen Tube Localization Implies a Role in Pollen–Pistil Interactions for the Tomato Receptor-like Protein Kinases LePRK1 and LePRK2
TLDR
Results suggest that Le PRK1 and LePRK2 play different roles in postpollination events and that at least LePRk2 may mediate some pistil response. Expand
Re-evaluation of the role of a transmitting tract-specific glycoprotein on pollen tube growth
Summary It has been proposed that a stylar glycoprotein, the transmitting tissue-specific (TTS) protein isolated from Nicotiana tabacum, serves both as a growth stimulant, by providing a source ofExpand
Relocation of a Ca2-Dependent Protein Kinase Activity during Pollen Tube Reorientation
TLDR
It is suggested that the tip-localized gradient of kinase activity promotes Ca2-mediated exocytosis and may act to regulate Ca2 channel activity. Expand
The role of inositol ( 1 , 4 , 5 ) triphosphate in pollen tube growth and orientation
  • Sex Plant Reprod
  • 1998
Inhibition of Pollen Tube Elongation by Microinjected Anti-Rop1Ps Antibodies Suggests a Crucial Role for Rho-Type GTPases in the Control of Tip Growth.
TLDR
It is proposed that Rop may regulate a Ca2+-dependent pathway involved in vesicle docking/fusion, whereas a C3-sensitive Rho GTPase may mediate cytoplasmic streaming. Expand
Pollen Tube Growth and the Intracellular Cytosolic Calcium Gradient Oscillate in Phase while Extracellular Calcium Influx Is Delayed.
TLDR
Ion influx appears to follow growth, with the effect that the rate of growth at a given point determines the magnitude of the ion influx ~11 sec later. Expand
Pollen tube guidance by the female gametophyte.
TLDR
This work has used a reciprocal chromosomal translocation to generate flowers wherein approximately half the ovules do not contain a functional female gametophyte but all ovules contain genotypically normal sporophytic cells, which strongly suggest that the female gamete is responsible for pollen tube guidance. Expand
Localized Apical Increases of Cytosolic Free Calcium Control Pollen Tube Orientation.
TLDR
Data show that localized changes of [Ca2+]c in the tip, which could result from asymmetric channel activity, control the direction of pollen tube growth. Expand
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