Genetic transformation patterns along a longitude gradient in Ukrainian populations of Schizophyllum commune fungus.

Schizophyllum commune populations across Ukraine show local genetic differentiation along a longitude gradient, forming three clusters and a weak isolation-by-distance signal (r = 0.1048, p = 0.0016).

• Why it matters: Fungal biogeography has focused mainly on species richness, leaving uncertainty about how genetic diversity shifts within a single species under climate change and anthropogenic pressure.
• What they did: Using DNA microsatellite loci, the study analyzed Ukrainian Schizophyllum commune samples across longitude to test genetic migration relationships and historical population development, including Mantel and Pearson correlation analyses.
• The result: Three clusters (Don + KrR, Vin + Cher, and I-F) reflect historically independent trajectories; Mantel showed weak isolation by distance, while Pearson r ≈ -0.56 indicates distance alone is not dominant.

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