FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term mushroom body ID (Ontology) FBbt:00005801 (Fly Anatomy)
Definition Bilaterally paired neuropil structure situated postero-dorsally in the protocerebrum that functions in olfactory associative learning and memory. The mushroom body is divided into: the calyx, which is closest to the cortex and receives sensory interneuron afferents; the pedunculus, which is a thick axon bundle extending from the calyx to the base of the lobes; and the mushroom body lobe system, which consists of a vertical branch and a medial branch, which have different structures at different life stages (Lee et al., 1999; Ito et al., 2014).[ FlyBase:FBrf0111409 FlyBase:FBrf0224194 FlyBase:FBrf0248215 ]
Also Known As "corpora pedunculata" ; "MB"
Comment This term as defined in Ito et al. (2014) corresponds to both the mushroom body (MB) and calyx (Cal) of Chiang et al. (2011).
Links to External Ontologies
VFB:FBbt_00005801
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 mushroom body (all annotations which use CV term, excluding "NOT" statements)
     mushroom body | adult stage
      --
     mushroom body | adult stage | heat sensitive
      --       --
     mushroom body | adult stage | somatic clone
      --       --       --
     mushroom body | P-stage
      --       --
     mushroom body | P-stage | heat sensitive
      --       --
     mushroom body | P-stage | somatic clone
      --       --       --
     mushroom body | progressive
      --       --
     mushroom body | pupal stage
      --       --
     mushroom body | somatic clone
      --
     mushroom body | third instar larval stage
      --       --
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neuromere
 |__protocerebrum_________________
disconnected anatomical group     |
 |__synaptic neuropil block_______|
ectodermal derivative             |
 |__anterior ectoderm derivative__|
synaptic neuropil                 |
 |__synaptic neuropil block_______|
supraesophageal zone              |
 |__protocerebrum_________________|
                                  mushroom body  6134 rec.
                                   |__adult mushroom body 5813 rec.
                                   |   |__calyx of adult mushroom body(+) 172 rec.
                                   |   |__lobe system of adult mushroom body(+) 2850 rec.
                                   |   |__pedunculus of adult mushroom body(+) 53 rec.
                                   |   |__spur of adult mushroom body 1 rec.
                                   |__embryonic/larval mushroom body 286 rec.
                                   |   |__calyx of larval mushroom body(+) 35 rec.
                                   |   |__core layer of the larval mushroom body 17 rec.
                                   |   |__inner layer of the larval mushroom body 18 rec.
                                   |   |__lobe system of larval mushroom body(+) 34 rec.
                                   |   |__outer layer of the larval mushroom body 18 rec.
                                   |   |__pedunculus of larval mushroom body 18 rec.
                                   |   |__spur of larval mushroom body 8 rec.
                                   |   |__surface layer of the larval mushroom body 15 rec.
                                   |__mushroom body neuropil subdivision 3053 rec.
                                       |__adult mushroom body alpha'' lobe 3 rec.
                                       |__adult mushroom body alpha'-lobe(+) 1901 rec.
                                       |__adult mushroom body alpha-lobe(+) 320 rec.
                                       |__adult mushroom body beta'' lobe
                                       |__adult mushroom body beta'-lobe(+) 145 rec.
                                       |__adult mushroom body beta-lobe(+) 387 rec.
                                       |__adult mushroom body calyx microglomerulus
                                       |__adult mushroom body dorsal accessory calyx 18 rec.
                                       |__adult mushroom body gamma-lobe(+) 1122 rec.
                                       |__adult mushroom body lateral accessory calyx
                                       |__adult mushroom body lateral calyx
                                       |__adult mushroom body medial calyx
                                       |__adult mushroom body ventral accessory calyx
                                       |__core layer of the larval mushroom body 17 rec.
                                       |__inner layer of the larval mushroom body 18 rec.
                                       |__intermediate toe of larval mushroom body medial lobe
                                       |__larval mushroom body accessory calyx
                                       |__larval mushroom body calyx glomerulus(+) 9 rec.
                                       |__lateral appendix of larval mushroom body
                                       |__layer of mushroom body slice(+)
                                       |__lobe system of mushroom body(+) 2924 rec.
                                       |__lower toe of larval mushroom body medial lobe
                                       |__main calyx of adult mushroom body
                                       |__mushroom body calyx(+) 226 rec.
                                       |__mushroom body layer(+) 75 rec.
                                       |__mushroom body medial lobe(+) 1475 rec.
                                       |__mushroom body medial lobelet
                                       |__mushroom body pedunculus(+) 119 rec.
                                       |__mushroom body slice(+) 116 rec.
                                       |__mushroom body spur(+) 26 rec.
                                       |__mushroom body vertical lobe(+) 2211 rec.
                                       |__mushroom body vertical lobelet
                                       |__outer layer of the larval mushroom body 18 rec.
                                       |__pedunculus divide of adult mushroom body
                                       |__pedunculus neck of adult mushroom body 2 rec.
                                       |__surface layer of the larval mushroom body 15 rec.
                                       |__upper toe of larval mushroom body medial lobe
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Is a anterior ectoderm derivative
synaptic neuropil block
Develops from mushroom body primordium
Part of protocerebrum
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Synonyms
Secondary IDs
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UBERON:0001058
VFB:FBbt_00005801