MYB-FL controls gain and loss of floral UV absorbance, a key trait affecting pollinator preference and reproductive isolation - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Nature Genetics Year : 2016

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

Abstract

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.

Dates and versions

hal-02638244 , version 1 (28-05-2020)

Identifiers

Cite

Hester Sheehan, Michel Moser, Ulrich Klahre, Korinna Esfeld, Alexandre Dell'Olivo, et al.. MYB-FL controls gain and loss of floral UV absorbance, a key trait affecting pollinator preference and reproductive isolation. Nature Genetics, 2016, 48 (2), pp.159-166. ⟨10.1038/ng.3462⟩. ⟨hal-02638244⟩
23 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More