Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

A Morphogenetic Model Accounting for Pollen Aperture Pattern in Flowering Plants

Ressayre1, Godelle, Mignot

  • 1Laboratoire Evolution et systématique, Université Paris-Sud, 91405 Orsay Cedex, France

Journal of Theoretical Biology
|September 15, 1998
PubMed
Summary

Pollen grain aperture number is determined during meiosis. A new model explains how nuclei influence cytokinesis, leading to aperture patterns and variations in dicotyledonous plants.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Symbolic sequence statistical analysis for free liquid jets

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2001
Same author

Perspectives in narcolepsy and hypocretin (orexin) research.

Sleep medicine·2000
Same author

Results of a Meta-Analysis of Trapidil, a PDGF Inhibitor Ñ A Sufficient Reason for a Second Look to the Pharmacological Approach to Restenosis.

The Journal of invasive cardiology·2000
Same author

Clinical and polysomnographic features in DQB1*0602 positive and negative narcolepsy patients: results from the modafinil clinical trial.

Sleep medicine·2000
Same author

Dispersal and metapopulation viability in a heterogeneous landscape

Journal of theoretical biology·1999
Same author

Characterization of 12 microsatellite loci of the human MHC in a panel of reference cell lines

Immunogenetics·1998

Area of Science:

  • Plant reproductive biology
  • Developmental biology
  • Cellular morphogenesis

Background:

  • Pollen grains possess resistant walls with apertures crucial for germination.
  • Aperture number is linked to meiosis and tetrad formation in microsporogenesis.
  • Simultaneous cytokinesis in dicotyledonous plants results in a four-nuclei syncytium before cell division.

Purpose of the Study:

  • To propose a theoretical morphogenetic model for pollen grain ontogeny.
  • To explain the link between meiotic nuclear behavior and aperture pattern formation.
  • To account for variations in aperture number and heterogeneous tetrad composition.

Main Methods:

  • Development of a theoretical model based on nuclear attractors and morphogenetic substance.

Related Experiment Videos

  • Analysis of nuclear interactions during the second meiotic division.
  • Explanation of cytokinesis patterns and their influence on pollen grain morphology.

    • Main Results:

    • The model successfully predicts the common three-aperture pattern in dicotyledonous plants via bipolar nuclear interactions.
    • Variations in aperture distribution are explained by disturbances in these interactions.
    • The model accounts for aperture duplication and the formation of heterogeneous pollen tetrads.

    Conclusions:

    • Nuclear arrangement and interactions during meiosis significantly influence pollen grain aperture number and distribution.
    • The proposed model provides a mechanistic explanation for observed pollen grain developmental patterns.
    • This framework helps understand the generation of morphological diversity within pollen tetrads.