Crassulacean acid metabolism photosynthesis in Bromeliaceae: an evolutionary key innovation

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dc.contributor.authorQuezada, Ivan M.
dc.contributor.authorGianoli, Ernesto
dc.date.accessioned2025-01-21T00:00:39Z
dc.date.available2025-01-21T00:00:39Z
dc.date.issued2011
dc.description.abstractCrassulacean acid metabolism (CAM) is a photosynthetic pathway that significantly increases water use efficiency in plants. It has been proposed that CAM photosynthesis, which evolved from the ancestral C3 pathway, has played a role in the diversification of some prominent plant groups because it may have allowed them to colonize and successfully spread into arid or semi-arid environments. However, the hypothesis that CAM photosynthesis constitutes an evolutionary key innovation, thereby enhancing diversification rates of the clades possessing it, has not been evaluated quantitatively. We tested whether CAM photosynthesis is a key innovation in the Bromeliaceae, a large and highly diversified plant family that has successfully colonized arid environments. We identified five pairs of sister groups with and without the CAM feature, including 31 genera and over 2000 species. In all five cases, the clades with CAM photosynthesis were more diverse than their C3 counterparts. We provide quantitative evidence that the evolution of CAM photosynthesis is significantly associated with increased diversification in Bromeliaceae and thus constitutes an evolutionary key innovation. We also found preliminary evidence of an association between the CAM pathway and growth habit in bromeliads, with terrestrial species being more likely to show CAM photosynthesis than epiphytic species. To our knowledge, this is the first case of a physiological attribute shown to be a key innovation in plants. (C) 2011 The Linnean Society of London, Biological Journal of the Linnean Society, 2011, 104, 480-486.
dc.description.funderCONICYT
dc.fuente.origenWOS
dc.identifier.doi10.1111/j.1095-8312.2011.01713.x
dc.identifier.eissn1095-8312
dc.identifier.issn0024-4066
dc.identifier.urihttps://doi.org/10.1111/j.1095-8312.2011.01713.x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95351
dc.identifier.wosidWOS:000294902700019
dc.issue.numero2
dc.language.isoen
dc.pagina.final486
dc.pagina.inicio480
dc.revistaBiological journal of the linnean society
dc.rightsacceso restringido
dc.subjectadaptation
dc.subjectarid environments
dc.subjectbromeliads
dc.subjectdiversification
dc.subjectepiphytism
dc.subjectniche
dc.subjectphysiological traits
dc.subjectterrestrial habitat
dc.subjectwater economy
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleCrassulacean acid metabolism photosynthesis in Bromeliaceae: an evolutionary key innovation
dc.typeartículo
dc.volumen104
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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