orange pigmented

Edge evidence

• Crt enzymes catalyzes carotenoid biosynthesis biolink:catalyzes

  Crt enzymes catalyze bacterial carotenoid biosynthetic reactions.

  • DOI:10.1080/1040841X.2025.2526423 crt genes ... reactions they catalyze Supports Crt enzymes as catalysts in bacterial carotenoid pathways.
• carotenoid biosynthesis produces orange carotenoids METPO:2000202

  Carotenoid biosynthesis produces orange pigments in representative bacteria.

  • DOI:10.1080/1040841X.2025.2526423 orange ... pigmentation in bacteria Supports carotenoid biosynthesis as a route to orange bacterial pigmentation.
• carotenoid biosynthesis produces staphyloxanthin METPO:2000202

  The S. aureus carotenoid pathway produces staphyloxanthin.

  • DOI:10.1128/JB.147.3.900-913.1981 triterpenoid carotenoids possessing a C30 chain Supports staphyloxanthin-related C30 carotenoid pigments in S. aureus.
• orange carotenoids causes visible orange color biolink:causes

  Orange carotenoids cause visible orange pigmentation.

  • DOI:10.1080/1040841X.2025.2526423 responsible for ... orange ... pigmentation Supports carotenoid pigments as determinants of orange color.
• visible orange color manifests as orange pigmented METPO:2007400

  Visible orange color manifests the orange-pigmented phenotype.

  • DOI:10.1080/1040841X.2025.2526423 orange ... pigmentation in bacteria Supports the trait-level color assignment.
• lycopene beta-cyclase (CrtY) converts lycopene

  CrtY lycopene beta-cyclase acts on lycopene as substrate.

  • DOI:10.3390/microorganisms11030614 lycopene is converted to beta-carotene by ring-forming lycopene cyclases; in bacteria the enzyme is crtY. Broad microbial applicability.
• lycopene is converted to beta-carotene

  Lycopene cyclization yields orange beta-carotene.

  • DOI:10.3390/microorganisms11030614 lycopene is converted to beta-carotene by ring-forming lycopene cyclases (crtY). Broad microbial applicability.
• beta-carotene hydroxylase (CrtZ) converts beta-carotene

  CrtZ beta-carotene hydroxylase acts on beta-carotene.

  • DOI:10.3390/microorganisms11030614 conversion of beta-carotene to zeaxanthin by crtZ. Strong general edge supporting orange/yellow branches.
• beta-carotene is converted to zeaxanthin

  Hydroxylation of beta-carotene yields zeaxanthin.

  • DOI:10.3390/microorganisms11030614 crtZ encodes a beta-carotene hydroxylase converting beta-carotene to zeaxanthin. Strong general edge.
• carotenoid ketolase (CrtW) contributes to ketocarotenoid biosynthesis RO:0002326

  CrtW ketolase drives ketocarotenoid (e.g., canthaxanthin/astaxanthin) formation.

  • DOI:10.3390/microorganisms11030614 ketolation by ketolases such as crtW yields ketocarotenoids (canthaxanthin/astaxanthin). Strong for the ketocarotenoid branch; orange-to-red hue.
• carotenoid accumulation protects against oxidative stress / reactive oxygen species

  Accumulated carotenoids act as antioxidants neutralizing reactive oxygen species.

  • DOI:10.7759/cureus.59892 acts as an antioxidant protecting against hydrogen peroxide and hydroxyl radicals. Strong, broad functional edge across taxa.
• orange pigmented has material basis in carotenoid accumulation

  The orange-pigmented phenotype is materially based on carotenoid accumulation.

  • DOI:10.7759/cureus.59892 orange carotenoid; golden yellow-orange pigment. High-level edge suitable for TraitMech root graph across diverse taxa.