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Descripción
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| Mediterranean alpine plants are among the organisms most vulnerable to climate change. Given the importance of flowering onset as a determinant of fitness in the new climate change scenarios, its study is of vital importance for future applications in conservation management. Focusing on Silene ciliata as a representative of Mediterranean alpine pastures, in three mountain ranges of the Spanish Central System, we observed that the populations located at the lowest elevation edge (more thermic and drier) bloomed earlier than the populations of the summits (colder and more humid). However, when the same plants were grown in a common gar- den experiment, plants from the summits bloomed earlier. Plants from the summit populations may be under greater selective pres- sure to flower earlier and optimize flowering duration, due to the short vegetative period and the positive relationship between flowering duration and reproductive success. These findings were corroborated using quantitative genetic approach (Pst-Fst) in which past selection towards early flowering was found. Results were similar in a subsequent common garden experiment involving populations from Northern and Central Spain in which Northern populations bloomed earlier than populations from Central Spain. To elucidate the genetic basis of these responses we performed an exome capture approach relying on a previously studied S. ciliata transcriptome. Results suggested that genes involved in flowering and flower development might play an important role in adaption to elevation. The combination of both genomic and phenotypic data revealed the existence of adaptive potential for an adjustment to environmental change. | |
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Internacional
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Si |
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Nombre congreso
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1st Meeting of the Iberian Ecological Society (SIBECOL) & XIV AEET Meeting |
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Tipo de participación
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960 |
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Lugar del congreso
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Barcelona (Spain) |
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Revisores
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Si |
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ISBN o ISSN
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00-0000-000-0 |
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DOI
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DOI 10.7818/SIBECOLandAEETmeeting.2019 |
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Fecha inicio congreso
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04/02/2019 |
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Fecha fin congreso
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07/02/2019 |
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Desde la página
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180 |
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Hasta la página
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180 |
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Título de las actas
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Abstract book of the 1st Meeting of the Iberian Ecological Society (SIBECOL) & XIV AEET Meeting |