Macroevolution of floral scent chemistry across radiations of male euglossine bee-pollinated plantsMacroevolución de olores florales a través de radiaciones de plantas polinizadas por abejas euglosinas machosMacroevolução dos voláteis florais em radiações de plantas polinizadas por machos de abelhas Euglossini.

Autor:	Liu JW; Center for Population Biology, University of California-Davis, Davis, CA, United States., Milet-Pinheiro P; Laboratory of Ecological Interactions and Semiochemicals, Universidade de Pernambuco, Petrolina, Pernambuco, Brazil., Gerlach G; Staatliche Naturwissenschaftliche Sammlungen Bayerns, Botanischer Garten München-Nymphenburg, München, Germany., Ayasse M; Institute of Evolutionary Ecology and Conservation Genomics, Ulm University, Ulm, Germany., Nunes CEP; Department of Ecology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil., Alves-Dos-Santos I; Department of Ecology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil., Ramírez SR; Center for Population Biology, University of California-Davis, Davis, CA, United States.; Jardín Botánico Lankester, Universidad de Costa Rica, Cartago, Costa Rica.
Jazyk:	angličtina
Zdroj:	Evolution; international journal of organic evolution [Evolution] 2024 Jan 04; Vol. 78 (1), pp. 98-110.
DOI:	10.1093/evolut/qpad194
Abstrakt:	Floral volatiles play key roles as signaling agents that mediate interactions between plants and animals. Despite their importance, few studies have investigated broad patterns of volatile variation across groups of plants that share pollinators, particularly in a phylogenetic context. The "perfume flowers," Neotropical plant species exhibiting exclusive pollination by male euglossine bees in search of chemical rewards, present an intriguing system to investigate these patterns due to the unique function of their chemical phenotypes as both signaling agents and rewards. We leverage recently developed phylogenies and knowledge of biosynthesis, along with decades of chemical ecology research, to characterize axes of variation in the chemistry of perfume flowers, as well as understand their evolution at finer taxonomic scales. We detect pervasive chemical convergence, with many species across families exhibiting similar volatile phenotypes. Scent profiles of most species are dominated by compounds of either the phenylpropanoid or terpenoid biosynthesis pathways, while terpenoid compounds drive more subtle axes of variation. We find recapitulation of these patterns within two independent radiations of perfume flower orchids, in which we further detect evidence for the rapid evolution of divergent floral chemistries, consistent with the putative importance of scent in the process of adaptation and speciation. (© The Author(s) 2023. Published by Oxford University Press on behalf of The Society for the Study of Evolution (SSE). All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
Databáze:	MEDLINE
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