Term Information

Accession
GO:0009561
Name
megagametogenesis
Ontology
biological_process
Synonyms
embryo sac development from the megaspore, megagametophyte nucleus division
Alternate IDs
None
Definition
The process whose specific outcome is the progression of the embryo sac over time, from its formation as the megaspore to the mature structure. The process begins when three of the four haploid megaspores disintegrate, and the fourth undergoes mitosis giving rise to a binucleate syncytial embryo sac. The two haploid nuclei migrate to the opposite poles of the embryo sac and then undergo two rounds of mitosis generating four haploid nuclei at each pole. One nucleus from each set of four migrates to the center of the cell. Cellularization occurs, resulting in an eight-nucleate seven-celled structure. This structure contains two synergid cells and an egg cell at the micropylar end, and three antipodal cells at the other end. A binucleate endosperm mother cell is formed at the center. Source: GOC:jl, GOC:mtg_plant
Comment
None
History
See term history for GO:0009561 at QuickGO
Subset
None
Feedback
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Comments, changes to terms, or requests for new ontology terms can be made at GO issue tracker on GitHub.

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Parents of megagametogenesis (GO:0009561)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
megagametogenesis [BFO:0000050 relation] BFO:0000050  embryo sac development (GO:0009553)
megagametogenesis [is_a relation] is_a  multicellular organismal process (GO:0032501)
Children of megagametogenesis (GO:0009561)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
embryo sac morphogenesis (GO:0048314) [BFO:0000050 relation] BFO:0000050  megagametogenesis
embryo sac central cell differentiation (GO:0009559) [BFO:0000050 relation] BFO:0000050  megagametogenesis
antipodal cell differentiation (GO:0009557) [BFO:0000050 relation] BFO:0000050  megagametogenesis
antipodal cell degeneration (GO:0055045) [BFO:0000050 relation] BFO:0000050  megagametogenesis
embryo sac nuclear migration (GO:0009562) [BFO:0000050 relation] BFO:0000050  megagametogenesis
embryo sac cellularization (GO:0009558) [BFO:0000050 relation] BFO:0000050  megagametogenesis
synergid differentiation (GO:0009563) [BFO:0000050 relation] BFO:0000050  megagametogenesis
embryo sac egg cell differentiation (GO:0009560) [BFO:0000050 relation] BFO:0000050  megagametogenesis
Wikipedia
Megagametogenesis