ArticleMolecular biology reports2025
Gene-ecological studies of critically isolated fern Pteris dentata Forssk.: genetic diversity, environmental adaptation, and future distribution modeling (SDM).
Article in Molecular biology reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundUnderstanding the ecological and genetic characteristics of narrowly distributed species like Pteris dentata is crucial for effective conservation planning. P. dentata, a narrowly distributed fern species that prefers moist, shaded environments, is threatened by habitat degradation associated with urban expansion, climate change, and invasive species-highlighting the urgent need for its conservation. METHODS AND
resultsThis study investigated genetic diversity, landscape genetics, adaptive potential, and the landscape adaptive index in two northern Iranian populations of P. dentata. Despite overall low genetic diversity, the populations exhibited significant differentiation in genetic composition and morpho-anatomical traits, primarily shaped by spatial factors. Patterns of isolation by distance (IBD) and isolation by environment (IBE) were both detected. Variation in adaptive potential and the landscape adaptive index indicated population-specific responses to environmental and climatic stressors. Advanced modeling techniques, including Structural Equation Modeling (SEM) and Random Forest (RF), revealed complex relationships among environmental, climatic, edaphic, and genetic variables influencing adaptation.
conclusionsSpecies distribution modeling predicts a substantial decline in suitable habitat for P. dentata in Iran by 2050, driven by climate change-emphasizing the need for proactive conservation strategies.
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