Evolutionary dynamics of repetitive elements and genome size in Tetrigidae (Orthoptera: Caelifera).

ABSTRACT: Repetitive elements (REs), involving both satellite DNA (satDNA) and transposable elements (TEs), significantly influence the evolutionary dynamics of the host genome. The order Orthoptera, known for its large genomes, serves as an ideal model for studying the relationship between repeat elements and genome size. We conducted a comparative repeatome analysis across ten Tetrigidae species, using low-coverage short reads in RepeatExplorer2 and dnaPipeTE. Our findings revealed that RE content constitutes between 42.82% (in Thoradonta yunnana) and 60.86% (in Saussurella cornuta) of their genomes, with major components including LINEs, LTR/Gypsy, LTR/Copia, and DNA transposons (Maverick and Helitron). We observed a strong positive correlation between repeat and TE content with genome size, sugg

SUBMITTER: Salman M 

PROVIDER: S-EPMC12494894 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature