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A biological process whose specific outcome is the progression of an integrated living unit: an anatomical structure (which may be a subcellular structure, cell, tissue, or organ), or organism over time from an initial condition to a later condition. 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 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. The final stages of microgametogenesis after the trinucleate stage has been reached resulting in viable pollen grains. A developmental process, independent of morphogenetic (shape) change, that is required for an anatomical structure, cell or cellular component to attain its fully functional state.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: pollen maturation
Acc: GO:0010152
Aspect: Biological Process
Desc: The final stages of microgametogenesis after the trinucleate stage has been reached resulting in viable pollen grains.
Proteins in PDR annotated with:
   This term: 11 [Search]
   Term or descendants: 11 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0010152 - pollen maturation (interactive image map)
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