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Progression through the phases of the meiotic cell cycle, in which canonically a cell replicates to produce four offspring with half the chromosomal content of the progenitor cell. The process whose specific outcome is the progression of the pollen grain over time, from its formation to the mature structure. The process begins with the meiosis of the microsporocyte to form four haploid microspores. The nucleus of each microspore then divides by mitosis to form a two-celled organism, the pollen grain, that contains a tube cell as well as a smaller generative cell. The pollen grain is surrounded by an elaborate cell wall. In some species, the generative cell immediately divides again to give a pair of sperm cells. In most flowering plants, however this division takes place later, in the tube that develops when a pollen grain germinates. The process by which the microsporocyte undergoes meiosis, giving rise to four haploid microspores. The process whose specific outcome is the progression of the spore over time, from its formation to the mature structure. The spore gives rise to gametophytes. The process whose specific outcome is the progression of the gametophyte over time, from its formation to the mature structure. The gametophyte is the gamete-producing individual or phase in the life cycle having alternation of generations. An example of this process is found in Arabidopsis thaliana. A biological process whose specific outcome is the progression of a cell over time from an initial condition to a later condition.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: microsporogenesis
Acc: GO:0009556
Aspect: Biological Process
Desc: The process by which the microsporocyte undergoes meiosis, giving rise to four haploid microspores.
Synonyms:
  • microspore development
Proteins in PDR annotated with:
   This term: 17 [Search]
   Term or descendants: 17 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0009556 - microsporogenesis (interactive image map)
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