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GO:0009561 megagametogenesisThe 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.
Term Information
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| Type | Synonym |
| exact | megagametophyte nucleus division |
| exact | embryo sac development from the megaspore |
| Database | ID |
| Wikipedia | Megagametogenesis |
All GO terms displayed in this graph can be clicked to display term definitions and child (descendent) terms.
All GO terms displayed in this chart can be right-clicked to display term definitions and child (descendent) terms.
| GO:0008150 biological_process | ||||||
![]() | GO:0032501 multicellular organismal process | |||||
![]() | ![]() | GO:0032502 developmental process | ||||
![]() | ![]() | ![]() | GO:0007275 multicellular organismal development | |||
![]() | ![]() | ![]() | ![]() | GO:0048229 gametophyte development | ||
![]() | ![]() | ![]() | ![]() | ![]() | GO:0009553 embryo sac development | |
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | GO:0009561 megagametogenesis |
| Code | Relationship |
![]() | part of |
![]() | is a |
![]() | regulates |
![]() | +ve regulates |
![]() | -ve regulates |
| P | GO:0009559 embryo sac central cell differentiation |
| P | GO:0009560 embryo sac egg cell differentiation |
| P | GO:0009562 embryo sac nuclear migration |
| P | GO:0009563 synergid differentiation |
| P | GO:0009557 antipodal cell differentiation |
| P | GO:0009558 cellularization of the embryo sac |
| P | GO:0055045 antipodal cell degeneration |
| P | GO:0048314 embryo sac morphogenesis |
| Code | Relationship |
| P | part of |
| I | is a |
| Hostname | tomcat-7.ebi.ac.uk |
| Uptime | 16:38 12/10/2009 |
| Data version | 2009-12-16-04-01-54 |