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ANTHROPOGENIC FIRE DRIVES THE EVOLUTION OF SEED TRAITS

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dc.creatorSUSANA GÓMEZ GONZÁLEZ
dc.creatorCRISTIAN RODRIGO TORRES DÍAZ
dc.date2011
dc.date.accessioned2025-01-10T14:31:39Z
dc.date.available2025-01-10T14:31:39Z
dc.date.issued2011
dc.description.abstractFIRE IS A MAJOR DISTURBANCE AFFECTING ECOSYSTEMS WORLDWIDE. PHYLOGENETIC STUDIES HAVE SHOWN THAT THE EVOLUTION OF SEED PERSISTENCE (FIRE RESISTANCE) IS ASSOCIATED WITH FIRE FREQUENCY OR SEVERITY. HOWEVER, THE EXISTENCE OF SPECIFIC SEED TRAITS RESULTING FROM NATURAL SELECTION MEDIATED BY FIRE REMAINS A KEY QUESTION IN PLANT EVOLUTION. WE EVALUATED THE ROLE OF FIRE IN THE EVOLUTION OF SEED TRAITS FROM A MICROEVOLUTIONARY PERSPECTIVE, USING AS A STUDY SYSTEM A NATIVE FORB FROM THE CHILEAN MATORRAL, WHERE FIRE IS A NOVEL, ANTHROPOGENIC DISTURBANCE. WE SHOW THAT ANTHROPOGENIC FIRES ARE SHAPING THE EVOLUTION OF SEED TRAITS SUCH AS PUBESCENCE AND SHAPE. AMONG-POPULATION VARIATION IN SEED PUBESCENCE, SHAPE, AND PERICARP THICKNESS WAS STRONGLY ASSOCIATED WITH FIRE FREQUENCY, AND WITHIN A POPULATION, FIRE SELECTED THOSE PLANTS WITH MORE PUBESCENT SEEDS, THICKER PERICARPS, AND LESS ROUNDED SEEDS. SEED PUBESCENCE AND SHAPE WERE SHOWN TO BE HERITABLE TRAITS. OUR FINDINGS PROVIDE INSIGHTS INTO THE UNDERSTANDING OF THE EVOLUTION OF SEED TRAITS IN FIRE-PRONE ENVIRONMENTS AND DEMONSTRATE THAT HUMAN-MADE FIRES CAN BE DRIVING EVOLUTIONARY CHANGES IN PLANT SPECIES FROM ECOSYSTEMS WHERE FIRES DO NOT OCCUR NATURALLY.
dc.formatapplication/pdf
dc.identifier.doi10.1073/pnas.1108863108
dc.identifier.issn0027-8424
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/7819
dc.languagespa
dc.publisherPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
dc.relation.uri10.1073/pnas.1108863108
dc.rightsPUBLICADA
dc.titleANTHROPOGENIC FIRE DRIVES THE EVOLUTION OF SEED TRAITS
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCHILLÁN
ubb.SedeCHILLÁN
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