The magic of flowers or: speciation genes and where to find them

Schlüter, Philipp M.

doi:10.1002/ajb2.1193

Cited by 8 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Eucera or Andrena (Paulus and Gack, 1990; Gaskett, 2011). Successful floral isolation and species divergence in the genus may easily be achieved by shifts between similar pollinators, where small changes in genes involved in the pheromone profiles can lead to attraction of new, related pollinators (Schlüter et al, 2011; Sedeek et al, 2014; Schlüter, 2018). For instance, after two independent shifts to (mostly) Andrena solitary bee pollination (Breitkopf et al, 2015), two parallel adaptive radiations have taken place simultaneously within the last ca.…”

Section: Introductionmentioning

confidence: 99%

A Phylogenomic Analysis of the Floral Transcriptomes of Sexually Deceptive and Rewarding European Orchids, Ophrys and Gymnadenia

et al. 2019

Self Cite

View full text Add to dashboard Cite

The orchids (Orchidaceae) constitute one of the largest and most diverse families of flowering plants. They have evolved a great variety of adaptations to achieve pollination by a diverse group of pollinators. Many orchids reward their pollinators, typically with nectar, but the family is also well-known for employing deceptive pollination strategies in which there is no reward for the pollinator, in the most extreme case by mimicking sexual signals of pollinators. In the European flora, two examples of these different pollination strategies are the sexually deceptive genus Ophrys and the rewarding genus Gymnadenia, which differ in their level of pollinator specialization; Ophrys is typically pollinated by pseudo-copulation of males of a single insect species, whilst Gymnadenia attracts a broad range of floral visitors. Here, we present and describe the annotated floral transcriptome of Ophrys iricolor, an Andrena-pollinated representative of the genus Ophrys that is widespread throughout the Aegean. Furthermore, we present additional floral transcriptomes of both sexually deceptive and rewarding orchids, specifically the deceptive Ophrys insectifera, Ophrys aymoninii, and an updated floral transcriptome of Ophrys sphegodes, as well as the floral transcriptomes of the rewarding orchids Gymnadenia conopsea, Gymnadenia densiflora, Gymnadenia odoratissima, and Gymnadenia rhellicani (syn. Nigritella rhellicani). Comparisons of these novel floral transcriptomes reveal few annotation differences between deceptive and rewarding orchids. Since together, these transcriptomes provide a representative sample of the genus-wide taxonomic diversity within Ophrys and Gymnadenia (Orchidoideae: Orchidinae), we employ a phylogenomic approach to address open questions of phylogenetic relationships within the genera. Specifically, this includes the controversial placement of O. insectifera within the Ophrys phylogeny and the placement of “Nigritella”-type morphologies within the phylogeny of Gymnadenia. Whereas in Gymnadenia, several conflicting topologies are supported by a similar number of gene trees, a majority of Ophrys gene topologies clearly supports a placement of O. insectifera as sister to a clade containing O. sphegodes.

show abstract

Section: Introductionmentioning

confidence: 99%

A Phylogenomic Analysis of the Floral Transcriptomes of Sexually Deceptive and Rewarding European Orchids, Ophrys and Gymnadenia

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here, the key innovation is for the flowers to mimic female insects using visual, tactile and olfactory cues and are pollinated by male insects that mistake the flower for a female during a “pseudocopulation”. As a result, the Ophrys model exhibits a multifaceted floral phenotype, including variations in color, shape and odor (Schiestl, 2005; Schiestl & Schlüter, 2009), which may contribute to reproductive isolation as an immediate by-product (the so-called ‘magic traits’, Schlüter, 2018).…”

Section: Introductionmentioning

confidence: 99%

Floral phenotypic divergence and genomic insights in anOphrysorchid: Unraveling early speciation processes

Gibert,

Schatz,

Buscail

et al. 2024

Preprint

View full text Add to dashboard Cite

SummaryAdaptive radiation inOphrysorchids leads to complex floral phenotypes that vary in scent, color and shape.Using a novel pipeline to quantify these phenotypes, we investigated trait divergence at early stages of speciation in six populations ofOphrys aveyronensisexperiencing recent allopatry. By integrating different genetic/genomic techniques, we investigated: (i) variation and integration of floral components (scent, color and shape), (ii) phenotypes and genomic regions under divergent selection, and (iii) the genomic bases of trait variation.We identified a large genomic island of divergence, associated with phenotypic variation in particular in floral odor. We detected potential divergent selection on macular color, while convergent selection was suspected on floral morphology and for several volatile olfactive compounds. We also identify candidate genes involved in anthocyanin and in steroid biosynthesis pathways associated with standing genetic variation in color and odor.This study sheds light on early differentiation inOphrys, revealing patterns that often become invisible over time, i.e., the geographic mosaic of traits under selection and the early appearance of strong genomic divergence. It also supports a crucial genomic region for future investigation and highlights the value of a multifaceted approach in unraveling speciation within taxa with large genomes.

show abstract

“…A trait should be considered a magic trait when it is both under divergent selection and causes nonrandom mating. Such magic traits are thought to facilitate speciation in the presence of gene flow (Gavrilets 2004) and have been identified in different groups of organisms including animals (e.g., Derryberry et al 2018) and plants (Schlüter 2018). For example, in ovenbirds (Aves: Furnariidae), traits such as body size and bill shape, which are subject to strong ecological selection, have been found to indirectly influence signal production (i.e., song), which acts as a mating cue (Derryberry et al 2018).…”

mentioning

confidence: 99%

Digest: The role of linkage in mimicking “magic traits”

Estandía

Sendell‐Price

2020

Evolution

View full text Add to dashboard Cite

Can divergence in a mating trait increase local adaption by increasing ecological divergence? Servedio and Bürger propose that "pseudomagic traits," tightly linked complexes consisting of an ecological locus under divergent selection and a locus acting as a mating cue, can effectively mimic pleiotropy. Such pseudomagic traits can form even when linkage between ecological and mating loci is limited.

show abstract

The magic of flowers or: speciation genes and where to find them

Cited by 8 publications

References 34 publications

A Phylogenomic Analysis of the Floral Transcriptomes of Sexually Deceptive and Rewarding European Orchids, Ophrys and Gymnadenia

A Phylogenomic Analysis of the Floral Transcriptomes of Sexually Deceptive and Rewarding European Orchids, Ophrys and Gymnadenia

Floral phenotypic divergence and genomic insights in anOphrysorchid: Unraveling early speciation processes

Digest: The role of linkage in mimicking “magic traits”

Contact Info

Product

Resources

About