Protoplasma

, 228:55

Links between early pollen development and aperture pattern in monocots

  • S. Nadot
  • A. Forchioni
  • L. Penet
  • J. Sannier
  • A. Ressayre
Article

DOI: 10.1007/s00709-006-0164-4

Cite this article as:
Nadot, S., Forchioni, A., Penet, L. et al. Protoplasma (2006) 228: 55. doi:10.1007/s00709-006-0164-4

Summary.

Although the pollen grains produced in monocots are predominantly monosulcate (or monoporate), other aperture types are also found within this taxonomic group, such as the trichotomosulcate, inaperturate, zonaperturate, di-, or triaperturate types. The aperture pattern is determined during the young-tetrad stage of pollen development and it is known that some features of microsporogenesis can constrain the aperture type. For example, trichotomosulcate pollen is always associated with simultaneous cytokinesis, a condition considered as derived in the monocots. Our observations of the microsporogenesis pathway in a range of monocot species show that this pathway is surprisingly variable. Our results, however preliminary, reveal that variation in microsporogenesis concerns not only cytokinesis but also callose deposition among the microspores and shape of the tetrads. The role played by these features in aperture pattern determination is discussed.

Keywords: Microsporogenesis; Pollen; Cytokinesis; Aperture pattern; Callose deposition; Monocot. 

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • S. Nadot
    • 1
  • A. Forchioni
    • 1
  • L. Penet
    • 1
  • J. Sannier
    • 1
  • A. Ressayre
    • 2
  1. 1.Laboratoire Ecologie, Systématique et Evolution, Unité Mixte de Recherche 8079 du Centre National de la Recherche ScientifiqueUniversité Paris XIOrsay
  2. 2.Station de Génétique Végétale du Moulon, Unité Mixte de Recherche 8120 du Centre National de la Recherche ScientifiqueGif sur Yvette

Personalised recommendations