spore shaped
METPO:1000682 · CLASS · REVIEWED
A cell shape in which an organism or differentiated cell has an endospore-like morphology, reflecting a dormant spore body with specialized protective layers.
Spore-shape endospore layer mechanism
Edge evidence
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forespore engulfment
establishes
mature spore body
Engulfment establishes the forespore as a distinct spore body.
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DOI:10.1146/annurev.genet.30.1.297two-cell-chamber sporangium
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cortex formation
builds layer of
mature spore body
Cortex formation builds a specialized spore structural layer.
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DOI:10.1038/nrmicro2921spore surface layers
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coat assembly
builds layer of
mature spore body
Coat assembly builds the multilayered external spore structure.
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DOI:10.1038/nrmicro2921mechanisms of coat assembly
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dehydrated spore core
contributes to
mature spore body
RO:0002326Core dehydration contributes to mature spore architecture and resistance.
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DOI:10.1111/j.1365-2672.2005.02736.xresistance of spores of Bacillus species
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mature spore body
manifests as
spore shaped
METPO:2007400Mature spore-body architecture manifests the spore-shaped trait.
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DOI:10.1038/nrmicro2921highly resistant dormant cell type known as the spore
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Spo0A phosphorylation
positively regulates
sporulation initiation
Phosphorylation of the master regulator Spo0A initiates sporulation.
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DOI:10.1126/sciadv.adq0791
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starvation
positively regulates
sporulation initiation
Starvation triggers entry into the sporulation differentiation program.
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DOI:10.1126/sciadv.adq0791
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sporulation initiation
leads to
forespore engulfment
Sporulation initiation leads to forespore engulfment.
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DOI:10.1126/sciadv.adq0791
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SpoIVA
anchors
spore coat
SpoIVA anchors/tethers coat material to the spore surface (outer forespore membrane).
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DOI:10.1038/nrmicro2921
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SpoVM
required for
spore encasement
SpoVM is required for the morphological transition that encases the forespore.
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DOI:10.1038/nrmicro2921
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SpoVID
required for
spore encasement
SpoVID is required for spore encasement; mutants block formation of a full coat shell.
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DOI:10.1038/nrmicro2921
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CotE
required for assembly of
outer coat
CotE is required for assembly of the spore outer coat.
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DOI:10.1038/nrmicro2921
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SafA
required for assembly of
inner coat
SafA is required for assembly of the spore inner coat.
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DOI:10.1038/nrmicro2921
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Provenance
- Source
- METPO (2025-11-25)
- Author
- Anthea Guo
- Definition source
- DOI:10.1038/nrmicro2921
Parent traits (1)
Synonyms (1)
- spore-shaped
kg-microbe context
Matched 1 kg-microbe node via direct_metpo.
METPO:1000682[-1.729, -2.644, -1.494, +0.751, …]
Nearest neighbors in embedding space
- morphology crescent shaped 0.811
- morphology staphylococcus arrangement 0.801
- morphology tetrad arrangement 0.801
- morphology sarcina arrangement 0.801
- morphology cell shape 0.801
- morphology streptococcus arrangement 0.801
- morphology dumbbell shaped 0.788
- morphology diplococcus shaped 0.783
Curation history
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·
SEEDED_FROM_METPO · seed_from_metpo
imported from data/raw/metpo.owl (CLASS)
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·
CURATED_WITH_LITERATURE · codex
Added DOI-backed definition and causal graph for forespore engulfment, cortex formation, coat assembly, dehydrated spore core, and mature spore-body morphology.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002326×1).
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2007400×1).
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·
ENRICH_CAUSAL_GRAPH · claude
Added 8 evidence-backed generic edges (12 new nodes) from the deep-research report.
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·
GROUND_CAUSAL_NODES · claude
Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (GO:0031160×1).
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·
GROUND_CAUSAL_NODES · claude
Grounded 4 causal-node grounding field(s) via mappings/node_grounding.tsv (UniProtKB:A0A2K8N6W1×1, UniProtKB:A0A0B5ANC0×1, UniProtKB:D5WPR1×1, UniProtKB:A0A0N1QUA1×1).