MYB-FL controls gain and loss of floral UV absorbance, a key trait affecting pollinator preference and reproductive isolation

Sheehan, Hester; Moser, Michel; Klahre, Ulrich; Esfeld, Korinna; Dell'Olivo, Alexandre; Mandel, Therese; Metzger, Sabine; Vandenbussche, Michiel; Freitas, Loreta; Kuhlemeier, Cris (2016). MYB-FL controls gain and loss of floral UV absorbance, a key trait affecting pollinator preference and reproductive isolation. Nature genetics, 48(2), pp. 159-166. Nature America 10.1038/ng.3462

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Adaptations to new pollinators involve multiple floral traits, each requiring coordinated changes in multiple genes. Despite this genetic complexity, shifts in pollination syndromes have happened frequently during angiosperm evolution. Here we study the genetic basis of floral UV absorbance, a key trait for attracting nocturnal pollinators. In Petunia, mutations in a single gene, MYB-FL, explain two transitions in UV absorbance. A gain of UV absorbance in the transition from bee to moth pollination was determined by a cis-regulatory mutation, whereas a frameshift mutation caused subsequent loss of UV absorbance during the transition from moth to hummingbird pollination. The functional differences in MYB-FL provide insight into the process of speciation and clarify phylogenetic relationships between nascent species.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant Development
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Sheehan, Hester; Moser, Michel; Klahre, Ulrich; Esfeld, Korinna; Dell'Olivo, Alexandre; Mandel, Therese and Kuhlemeier, Cris

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

1061-4036

Publisher:

Nature America

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

23 Feb 2016 16:20

Last Modified:

24 Apr 2017 09:36

Publisher DOI:

10.1038/ng.3462

PubMed ID:

26656847

BORIS DOI:

10.7892/boris.75813

URI:

https://boris.unibe.ch/id/eprint/75813

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