Comparative genomic analysis. (IMAGE)
Caption
Comparative genomic analysis. (A) The diversity of spathes in Anthurium. (B) Genome features of A. andraeanum (Aan) and A. scherzerianum (Asc) genomes and structural variation (SV) distribution between the two Anthurium genomes. (C) Time-calibrated phylogeny, with node age and the 95% CIs labeled. Pie charts show the proportions of gene families that underwent expansion or contraction. Histograms show gene family categories and transposable element content. Black dots indicate the fossil calibration points used in the analysis. (D) Gene family classifications. (E) Comparison of repeat content across 11 Araceae species. The genomes of Anthurium spp. and Amorphophallus konjac exhibited substantially greater lengths of DNA transposons and LTR retrotransposons (Copia, Gypsy, and others) than the other species, correlating strongly with their larger genome sizes. (F) Intra-genome comparison within two Anthurium genomes. Macrosynteny patterns of two Anthurium genomes show that each region aligns with four syntenic regions in self. (G) Collinear comparison of two Anthurium genomes with the ancestral monocot karyotype (AMK). A clear 4:1 syntenic relationship supports the occurrence of two whole-genome duplication (WGD) events in both Anthurium species. (H) Evolutionary scenario of the Araceae genomes from the AMK. Chromosomes shown with dashed lines represent regions not covered by AMK. Comparative karyotype analysis reveals that Araceae genomes have undergone extensive chromosomal rearrangements, contributing to lineage-specific genome architectures.
Credit
Horticulture Research
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