All this talk about haploid stages, I thought I should illustrate it for y'all. Mushrooms (n+n) are the site of recombination, which occurs after nuclei fuse in the basidium (karyogamy to make a diploid nucleus, 2n). Basidiospores are haploid (n), containing one recombinant nucleus.
I use a single basidiospore to grow cultures to make the genetic analyses easier with only one copy of each chromosome instead of two in a dikaryon (n+n) or diploid (2n). I've added mating genes in Basidiomycota to the figure; the homeodomain locus (HD), which usually has two genes, and the pheromone/receptor locus. Alleles of all genes at these loci must differ for a compatible cross. I'll cover this more when I've annotated the mating genes in our genomes of P. cubensis and P. subaeruginosa.
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Designer Shrooms @ Funky Fungus on 1st July 2023
I started a gig at Funky Fungus as Chief Scientific Officer to make designer shrooms Our research on Psilocybe
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