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Asymmetric division and cell-fate determination in developing pollen
Ist Teil von
Trends in plant science, 1998-08, Vol.3 (8), p.305-310
Ort / Verlag
Oxford: Elsevier Ltd
Erscheinungsjahr
1998
Link zum Volltext
Quelle
Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)
Beschreibungen/Notizen
The first mitotic division of the haploid microspore in the pathway of pollen development is a striking example of an asymmetric division that leads to different fates in the daughter cells. Recently, new insight into microspore polarity and cell-fate determination in pollen has been obtained in
Arabidopsis by applying cell-fate markers in conjunction with a mutational approach. These studies suggest that development into a vegetative cell is the default programme, but that this is repressed in the generative cell as a result of division asymmetry. Gametophytic mutants that affect cell division, division asymmetry and cell fate have highlighted the importance of asymmetrically localized factors in microspore polarity and cell-fate determination in pollen.