ArticleAnnals of botany2018
Variation in functional responses to water stress and differentiation between natural allopolyploid populations in the Brachypodium distachyon species complex.
Article in Annals of botany, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed.
- Drivers of insect herbivory resistance and tolerance to plant damage in the Brachypodium distachyon species complex.American journal of botany · 2026Article
- Ecophysiological Differentiation among Two Resurrection Ferns and Their Allopolyploid Derivative.Plants (Basel, Switzerland) · 2023Article
- Impact of genome duplications in drought tolerance and distribution of the diploid-tetraploidFrontiers in plant science · 2023Article
- Patterns of pan-genome occupancy and gene coexpression under water-deficit in Brachypodium distachyon.Molecular ecology · 2022Article
- Exploiting the drought tolerance of wildFrontiers in plant science · 2022Article
- Comparative Genomics, Evolution, and Drought-Induced Expression of Dehydrin Genes in ModelPlants (Basel, Switzerland) · 2021Article
- The genome of Cleistogenes songorica provides a blueprint for functional dissection of dimorphic flower differentiation and drought adaptability.Plant biotechnology journal · 2021Article
- Ploidy-Dependent Effects of Light Stress on the Mode of Reproduction in theFrontiers in plant science · 2020Article
- Transgressivity in Key Functional Traits Rather Than Phenotypic Plasticity Promotes Stress Tolerance in A Hybrid Cordgrass.Plants (Basel, Switzerland) · 2019Article
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6 authors.
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Abstract
Background and Aims: Some polyploid species show enhanced physiological tolerance to drought compared with their progenitors. However, very few studies have examined the consistency of physiological drought response between genetically differentiated natural polyploid populations, which is key to evaluation of the importance of adaptive evolution after polyploidization in those systems where drought exerts a selective pressure. Methods: A comparative functional approach was used to investigate differentiation of drought-tolerance-related traits in the Brachypodium species complex, a model system for grass polyploid adaptive speciation and functional genomics that comprises three closely related annual species: the two diploid parents, B. distachyon and B. stacei, and the allotetraploid derived from them, B. hybridum. Differentiation of drought-tolerance-related traits between ten genetically distinct B. hybridum populations and its ecological correlates was further analysed. Key Results: The functional drought response is overall well differentiated between Brachypodium species. Brachypodium hybridum allotetraploids showed a transgressive expression pattern in leaf phytohormone content in response to drought. In contrast, other B. hybridum physiological traits correlated to B. stacei ones. Particularly, proline and water content were the traits that best discriminated these species from B. distachyon under drought. Conclusions: After polyploid formation and/or colonization, B. hybridum populations have adaptively diverged physiologically and genetically in response to variations in aridity.
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