Fig. 4: Genetic differentiation and detection of positive selection signals in the L. rhizohalophila population.
From: Divergence of a genomic island leads to the evolution of melanization in a halophyte root fungus
A Genome-wide distribution of the Z-transformed fixation index ZFst plotted along contigs between group 1 and group 2. Scaffolds are arranged on the x-axis according to the reference genome and are separated by color. Genes within every 10-kbp window are plotted in a single column, and the 95% and 99% outliers are marked. B Enlargement of a genomic island of divergence (containing six genes) in scaffold 6, in which a strong positive selection signal in group 1 is detected. The genomic region showing high Fst, low nucleotide diversity (θπ), negative Tajima’s D, and high CLR values in group 1 are highlighted. C, D LD analysis of the pks2 and mfs genes plotted by Haploview v4.1. The number and rectangle above the LD plot represent the position of the corresponding exons. The color of the plot corresponds to the strength of LD between sites, with the blue color representing strong LD and the yellow color representing weak or no LD. The triangle with a black bold line denotes LD blocks.
