Statistical analysis
All statistical analyses were performed using biological triplicates. The differences were considered statistically significant atp -values <0.05. The comparison of growth rate between populations and isolation locations was undertaken with a pairedt -test. The heat map and phenotypic principal component analysis (PCA) were created using R software (Team, 2008), the ”pheatmap” and “prcomp” packages stats 3.6.0, and plotted using the ”ggplot2” and “ggbiplot” packages.