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Term:
megagametogenesis (GO:0009561)
Annotations: Rat: (0) Mouse: (0) Human: (0) Chinchilla: (0) Bonobo: (0) Dog: (0) Squirrel: (0)
Parent Terms Term With Siblings Child Terms
adult behavior +   
amyloid-beta clearance +   
bud dormancy process 
callus formation 
circadian regulation of gene expression  
circadian regulation of heart rate +  
circadian regulation of translation  
coagulation +   
cytokine production +   
determination of adult lifespan +   
digestion +   
hatching behavior 
innervation +   
keratinization +   
larval behavior +  
megagametogenesis +  
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.
megasporogenesis 
meristem determinacy +  
meristem maintenance +  
microgametogenesis +  
midbrain-hindbrain boundary maturation during brain development  
midbrain-hindbrain boundary maturation during neural plate development 
molting cycle +   
molting cycle process +   
morphogenesis of a branching structure +   
multi-multicellular organism process +   
multicellular organism adhesion +  
multicellular organism development +   
multicellular organism growth +   
multicellular organism reproduction +   
multicellular organismal homeostasis +   
multicellular organismal movement +   
multicellular organismal response to stress +   
multicellular organismal signaling +   
muscle attachment +  
negative regulation of multicellular organismal process +   
neurotrophin production +   
organ growth +   
organism emergence from protective structure +   
ossification +   
otolith tethering 
pattern specification process +   
photoreceptor cell maintenance  
pigment accumulation in tissues +   
plasma lipoprotein particle clearance +   
plasma lipoprotein particle organization +   
pollen germination 
polyphenic determination +  
positive regulation of multicellular organismal process +   
post-embryonic development +   
primary growth 
production of molecular mediator involved in inflammatory response +   
pseudocleavage +  
pupariation +  
pupation 
regulation of multicellular organismal process +   
respiratory gaseous exchange +   
response to dietary excess +   
response to high population density 
scab formation 
secretion by tissue +   
seed dormancy process +  
seed germination +  
sleep +   
stem cell population maintenance +   
system process +   
tissue migration +   
tissue remodeling +   
transforming growth factor beta activation +   
vascular transport +   
vibrational conductance of sound to the inner ear 
visual behavior +   

Synonyms
Exact Synonyms: embryo sac development from the megaspore ;   megagametophyte nucleus division
Xrefs: Wikipedia:Megagametogenesis
Only In Taxon: NCBITaxon:3398 ! Magnoliophyta
Definition Sources: GOC:jl, GOC:mtg_plant

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