November 30, 2025Ecology and EvolutionOpen Access

Plant Genome Size Is Associated With Fine‐Scale Spatial Variation in Soil Depth, but Not Climatic Conditions, in the Grass Festuca ovina

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Genome size negatively correlates with soil depth variability in Festuca ovina, suggesting environmental adaptation implications.

Genome size negatively associates with fine-scale soil depth variation, affecting plant viability in grasslands.
Key evidence shows biomass and flowering time are not linked to genome size, indicating unique selection pressures.
Analysis of populations under experimental drought highlights environmental impact on intraspecific genome size differences.
Finding emphasizes nutrient availability's role in shaping genome sizes, with shallow soils favoring larger genomes.

A 2025 study studied this question.

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