September 29, 2025Open Access

Genome size variation is attributed to adaptive purging of transposable elements

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Observational analysis revealed genome size variation linked to transposable elements in Hordeum species, indicating environmental adaptation.

Significant variation in genome size, with differences of up to 10% observed in Hordeum species, suggests adaptive significance.
Genome-wide association studies reveal that transposable element silencing is crucial for regulating genome size under environmental stress.
Drought identified as a primary factor influencing genome expansion via transposable element accumulation in both Hordeum species.
Mating system affects variation within populations but not the overall extent of genome size variation among the species.

Potapenko et al. (2025) studied this question.

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September 29, 2025Open Access

View Full Paper

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Authors

Observational analysis revealed genome size variation linked to transposable elements in Hordeum species, indicating environmental adaptation.

Significant variation in genome size, with differences of up to 10% observed in Hordeum species, suggests adaptive significance.
Genome-wide association studies reveal that transposable element silencing is crucial for regulating genome size under environmental stress.
Drought identified as a primary factor influencing genome expansion via transposable element accumulation in both Hordeum species.
Mating system affects variation within populations but not the overall extent of genome size variation among the species.

Potapenko et al. (2025) studied this question.

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