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Convergent Evolution at the Pathway Level: Predictable Regulatory Changes during Flower Color Transitions

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cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
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cris.virtualsource.author-orcid2f480146-5f59-4919-b247-20bcb6dde4ff
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dc.contributor.authorLarter, Maximilian
dc.contributor.authorDunbar-Wallis, Amy
dc.contributor.authorBerardi, Andrea Elise
dc.contributor.authorSmith, Stacey D
dc.contributor.authorPurugganan, Michael
dc.date.accessioned2024-10-07T16:50:50Z
dc.date.available2024-10-07T16:50:50Z
dc.date.issued2018-09
dc.description.abstractThe predictability of evolution, or whether lineages repeatedly follow the same evolutionary trajectories during phenotypic convergence remains an open question of evolutionary biology. In this study, we investigate evolutionary convergence at the biochemical pathway level and test the predictability of evolution using floral anthocyanin pigmentation, a trait with a well-understood genetic and regulatory basis. We reconstructed the evolution of floral anthocyanin content across 28 species of the Andean Glade lochrominae (Solanaceae) and investigated how shifts in pigmentation are related to changes in expression of seven key anthocyanin pathway genes. We used phylogenetic multivariate analysis of gene expression to test for phenotypic and developmental convergence at a macroevolutionary scale. Our results show that the four independent losses of the ancestral pigment delphinidin involved convergent losses of expression of the three late pathway genes (F3'S'h, Dfr, and Ans). Transitions between pigment types affecting floral hue (e.g., blue to red) involve changes to the expression of branching genes F3'h and F3'S'h, while the expression levels of early steps of the pathway are strongly conserved in all species. These patterns support the idea that the macroevolution of floral pigmentation follows predictable evolutionary trajectories to reach convergent phenotype space, repeatedly involving regulatory changes. This is likely driven by constraints at the pathway level, such as pleiotropy and regulatory structure.
dc.description.numberOfPages11
dc.description.sponsorshipInstitut für Pflanzenwissenschaften (IPS)
dc.identifier.doi10.7892/boris.122852
dc.identifier.pmid29878153
dc.identifier.publisherDOI10.1093/molbev/msy117
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/61782
dc.language.isoen
dc.publisherOxford University Press
dc.relation.ispartofMolecular Biology and Evolution
dc.relation.issn0737-4038
dc.relation.organizationDCD5A442C224E17DE0405C82790C4DE2
dc.relation.organizationDCD5A442C579E17DE0405C82790C4DE2
dc.subjectanthocyanin pathway
dc.subjectgene expression
dc.subjectfloral pigment evolution
dc.subject.ddc500 - Science::580 - Plants (Botany)
dc.titleConvergent Evolution at the Pathway Level: Predictable Regulatory Changes during Flower Color Transitions
dc.typearticle
dspace.entity.typePublication
dspace.file.typetext
oaire.citation.endPage2169
oaire.citation.issue9
oaire.citation.startPage2159
oaire.citation.volume35
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
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oairecerif.author.affiliationInstitut für Pflanzenwissenschaften (IPS)
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unibe.contributor.rolecreator
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unibe.date.licenseChanged2019-11-03 05:03:36
unibe.description.ispublishedpub
unibe.eprints.legacyId122852
unibe.journal.abbrevTitleMOL BIOL EVOL
unibe.refereedTRUE
unibe.subtype.articlejournal

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