Continuing advances in genomics are revealing substantial differences between genomes of major eukaryotic lineages. Because most data (in terms of depth and phylogenetic breadth) are available for angiosperms and mammals, we explore differences between these groups and show that angiosperms have less highly compartmentalized and more diverse genomes than mammals. In considering the causes of these differences, four mechanisms are highlighted: polyploidy, recombination, retrotransposition and genome silencing, which have different modes and time scales of activity. Angiosperm genomes are evolutionarily more dynamic and labile, whereas mammalian genomes are more stable at both the sequence and chromosome level. We suggest that fundamentally different life strategies and development feedback on the genome exist, influencing dynamics and evolutionary trajectories at all levels from the gene to the genome.

Institute of Biophysics The Academy of Sciences of the Czech Republic Kralovopolska 135 612 65 Brno Czech Republic

Citace poskytuje Crossref.org

Catsnap: a user-friendly algorithm for determining the conservation of protein variants reveals extensive parallelisms in the evolution of alternative splicing

What Can Long Terminal Repeats Tell Us About the Age of LTR Retrotransposons, Gene Conversion and Ectopic Recombination?

Nested plant LTR retrotransposons target specific regions of other elements, while all LTR retrotransposons often target palindromes and nucleosome-occupied regions: in silico study

The large genome size variation in the Hesperis clade was shaped by the prevalent proliferation of DNA repeats and rarer genome downsizing

Impact of Repetitive Elements on the Y Chromosome Formation in Plants

From Mendel's discovery on pea to today's plant genetics and breeding : Commemorating the 150th anniversary of the reading of Mendel's discovery

Genomic repeat abundances contain phylogenetic signal

Quadruplex-forming sequences occupy discrete regions inside plant LTR retrotransposons

Analysis of plastid and mitochondrial DNA insertions in the nucleus (NUPTs and NUMTs) of six plant species: size, relative age and chromosomal localization

Contrasting patterns of transposable element and satellite distribution on sex chromosomes (XY1Y2) in the dioecious plant Rumex acetosa

Conservation of chromosomes syntenic with avian autosomes in squamate reptiles revealed by comparative chromosome painting

Genomic diversity in two related plant species with and without sex chromosomes--Silene latifolia and S. vulgaris

Strong conservation of the bird Z chromosome in reptilian genomes is revealed by comparative painting despite 275 million years divergence

Telomere maintenance in liquid crystalline chromosomes of dinoflagellates