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Mushroom is a dilute coat color found in Shetland Ponies that results in a distinctive “sepia” toned coat, often accompanied by a flaxen mane and tail.
The mushroom dilution can be found in Shetland Ponies and also rarely in Miniature Horses. The following table lists all breeds that can currently have the mushroom allele in-game. Breeds
Mushroom is a unique recessive coat color type found in the Shetland Pony. In 2019 the researchers using 12 Mushroom colored horses were able to map the phenotype to a frameshift mutation in MFSD12 on equine chromosome 7. This recessive dilution gene that affects red pigment in horses.
Mushroom is a coat colour unique to the Shetland Pony, where phaeomelanin (chestnut colour) is lightened to a light sepia shade. Mushroom can also slightly affect the coat colour of ponies with bay base colour.
19 de oct. de 2019 · Analysis of high throughput Illumina sequencing data from one mushroom Shetland pony compared to 87 genomes from horses of various breeds, uncovered a frameshift variant, p.Asp201fs, in the MFSD12 gene encoding the major facilitator superfamily domain containing 12 protein.
So far the only breed where mushroom has been observed is the Shetland Pony. A few Miniature Horses have been identified as carriers. Shetland Ponies were used in the development of that breed so it is assumed to have come from there.
Some bay Shetlands, homozygous for mushroom, resemble buckskins but have no crème dilution in their parentage. A lot more will be learned about this dilution when more ponies have been tested for the presence of mushroom in mushroom carrying ponies that are not themselves mushroom in colour.
