Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Extreme diversification of floral volatiles within and among species of Lithophragma (Saxifragaceae)

Full text
Author(s):
Friberg, Magne [1] ; Schwind, Christopher [2] ; Guimaraes, Jr., Paulo R. [3] ; Raguso, Robert A. [4] ; Thompson, John N. [2]
Total Authors: 5
Affiliation:
[1] Lund Univ, Dept Biol, SE-22362 Lund - Sweden
[2] Univ Calif Santa Cruz, Dept Ecol & Evolutionary Biol, Santa Cruz, CA 95060 - USA
[3] Univ Sao Paulo, Inst Biociencias, Dept Ecol, BR-05508090 Sao Paulo - Brazil
[4] Cornell Univ, Dept Neurobiol & Behav, Ithaca, NY 14853 - USA
Total Affiliations: 4
Document type: Journal article
Source: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA; v. 116, n. 10, p. 4406-4415, MAR 5 2019.
Web of Science Citations: 2
Abstract

A major challenge in evolutionary biology is to understand how complex traits of multiple functions have diversified and codiversified across interacting lineages and geographic ranges. We evaluate intra- and interspecific variation in floral scent, which is a complex trait of documented importance for mutualistic and antagonistic interactions between plants, pollinators, and herbivores. We performed a large-scale, phylogenetically structured study of an entire plant genus (Lithophragma, Saxifragaceae), of which several species are coevolving with specialized pollinating floral parasites of the moth genus Greya (Prodoxidae). We sampled 94 Lithophragma populations distributed across all 12 recognized Lithophragma species and subspecies, and four populations of related saxifragaceous species. Our results reveal an unusually high diversity of floral volatiles among populations, species, and clades within the genus. Moreover, we found unexpectedly major changes at each of these levels in the biosynthetic pathways used by local populations in their floral scents. Finally, we detected significant, but variable, genus-and species-level patterns of ecological convergence in the floral scent signal, including an impact of the presence and absence of two pollinating Greya moth species. We propose that one potential key to understanding floral scent variation in this hypervariable genus is its geographically diverse interactions with the obligate specialized Greya moths and, in some species and sites, more generalized copollinators. (AU)

FAPESP's process: 17/08406-7 - How do species and interaction turnovers affect the coevolutionary dynamics in mutualistic networks?
Grantee:Paulo Roberto Guimarães Junior
Support Opportunities: Regular Research Grants