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Mushroom is a distinctive dilute coat colour characterized by a sepia-toned or taupe body, often accompanied by a flaxen mane and tail.
15 Arbeidsdager
Spesifikasjoner
| Breeds | |
|---|---|
| Gene | |
| Organ | |
| specimen | Svaber, EDTA blod, heparinblod, sæd, vev |
| Mode of Inheritance | |
| Chromosome | |
| Also known as | |
| Year Published |
Generell informasjon
Mushroom is a distinctive dilute coat colour characterized by a sepia-toned or taupe body, often accompanied by a flaxen mane and tail. The shade can vary widely between individuals and may resemble other dilutions such as cream or silver, though it is genetically unrelated to either.
This unique colouration is caused by an autosomal recessive mutation in the major facilitator superfamily domain containing 12 (MFSD12) gene. The mutation specifically affects red/yellow pigment (phaeomelanin), leading to visible dilution primarily on chestnut-based horses.
The mushroom gene is most commonly found in Shetland Ponies, with lower frequency observed in Miniature Horses.
Kliniske egenskaper
The mushroom mutation primarily affects red-based coat colours because it dilutes phaeomelanin, the pigment responsible for red/yellow tones in horse coats. This means that a horse with a red-base (chestnut) shows a classic mushroom look with a diluted coat colour to a sepia, taupe, or mousy brown tone with flaxen or silvery manes and tail. On the basic colour bay the mushroom variant shows a sepia coloured body hair but no influence on the black lower legs, mane and tail, which are caused by eumelanin. These horses can resemble a faded or diluted bay, with a more distinctive muted tone. There is no visible effect of mushroom on horses with a black base coat even if the horse is homozygous for the variant.
Tilleggsinformasjon
Pelsfarge er et intrikat trekk som involverer en kombinasjon av flere forskjellige gener. Testing for en rekke forskjellige loci vil gi den mest komplette analysen av hestens pelsfargegenetikk.
Referanser
Pubmed ID: 31635058
Omia ID: 2197