Molecular Phylogenetics of the Sexually Deceptive Orchid Genus Ophrys (Orchidaceae) Based on Nuclear and Chloroplast DNA Sequences

Soliva, M.; Kocyan, Alexander; Widmer, Alex

doi:10.1006/mpev.2001.0953

Cited by 93 publications

(113 citation statements)

References 57 publications

(45 reference statements)

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“…Our results are in good agreement with the close phylogenetic relationships between species in the O. sphegodes complex as inferred from a recent phylogenetic analysis of the genus, in which no differences among species were found in noncoding chloroplast and nuclear ribosomal internal transcribed spacer (ITS) sequences (Soliva et al 2001).…”

Section: Fig 4 Genotype Assignment Tests Based On Cavalli-sforza's supporting

confidence: 91%

“…This study focuses on species in the O. sphegodes complex that comprises 31 species (Delforge 1994) and has its center of diversity in Italy and southern France. We have previously shown in a phylogenetic analysis of Ophrys that species in this complex are closely related (Soliva et al 2001). Species investigated in the present study are similar in floral morphology but can be identified using differences in labellum size, color, and shape.…”

Section: Study Systemmentioning

confidence: 56%

“…At an early stage of speciation, one could observe patterns of shared alleles between species and wrong assignment of individuals, which are here interpreted as evidence of introgression. Indeed, re-cent divergence among species has been inferred from the lack of sequence divergence (Soliva et al 2001). However, we view our results as a consequence of gene flow upon secondary contact of species, mainly because all species investigated have relatively large geographic distributions (thousands of square kilometers) and show cohesion with respect to floral traits and pollinator attraction across the distribution range.…”

Section: Introgression Between Sympatric Ophrys Populationsmentioning

confidence: 99%

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Gene Flow Across Species Boundaries in Sympatric, Sexually Deceptive Ophrys (Orchidaceae) Species

Soliva

Widmer²

2003

Evolution

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Abstract. Orchids of the genus Ophrys (Orchidaceae) are pollinated by male bees and wasps through sexual deception. The Ophrys sphegodes group encompasses several closely related species that differ slightly in floral morphology and are pollinated by different solitary bee species. Populations representing different species of the O. sphegodes group often flower simultaneously in sympatry. To test whether gene flow across the species boundaries occurs in these sympatric populations, or whether they are reproductively isolated, we examined the distribution of genetic variation within and among populations and species of this group. We collected at each of five different localities in southern France and Italy two sympatric, co-flowering Ophrys populations, representing six Ophrys species in total. The six microsatellite loci surveyed were highly variable. Genetic differentiation among geographically distant populations of the same species was lower than differentiation among sympatric populations of different species. However, the strength of genetic differentiation among species was among the lowest reported for orchids. Genotype assignment tests and marker-based estimates of gene flow revealed that gene flow across species boundaries occurred and may account for the low observed differentiation among species. These results suggest that sexual deceit pollination in Ophrys may be less specific than thought, or that rare mistakes occur.

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Section: Fig 4 Genotype Assignment Tests Based On Cavalli-sforza's supporting

confidence: 91%

Section: Study Systemmentioning

confidence: 56%

Section: Introgression Between Sympatric Ophrys Populationsmentioning

confidence: 99%

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Gene Flow Across Species Boundaries in Sympatric, Sexually Deceptive Ophrys (Orchidaceae) Species

Soliva

Widmer²

2003

Evolution

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“…No differentiation was revealed between allopatric species in the complex or species with confirmed one-to-one pollinator relationships. Patterns of low molecular phylogenetic diversity and high morphological similarity among related species are common in orchids in general (Phillips et al 2012) and sexually deceptive orchids in particular, for example Ophrys (Soliva et al 2001, Soliva andWidmer 2003), Chiloglottis (Mant et al 2005) and Caladenia (Swartz et al 2009). Overall, the sharing of the same vector species among ten reticulata complex species combined with evidence of very low genetic divergence suggested they belong to the same biological species and most likely represent an example of taxonomic over-splitting (Swartz et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Pollinator sharing by the sexually deceptive Green-comb Spider Orchids, Caladenia phaeoclavia, C. parva and C. villosissima (Orchidaceae: Caladeniinae): taxonomic considerations

Bower¹

2015

Telopea

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Sexually deceptive orchids are pollinated when male insects perform mating behaviours on the femalemimicking labellum. Such orchids are characterised by extreme pollinator specificity, having only one, or occasionally a few, closely related insect species as pollen vectors. Sharing of a sexually deceived pollinator species between two or more orchid species is rare among Australian orchids in the Drakaeinae and Caladeniinae pollinated by male Thynnid wasps. In this paper putative pollinator sharing within a complex of three morphologically similar species of Greencomb Spider Orchids, Caladenia parva G.W. Carr, C. phaeoclavia D.L. Jones and C. villosissima G.W. Carr, was investigated using pollinator baiting and choice testing in the field. The three orchid taxa are shown to share the same thynnid wasp pollen vector, Lophocheilus anilitatus (Smith) over the entire geographic range of the complex in New South Wales and Victoria. Pollinator baiting and choice testing at 42 locations revealed no evidence for the existence of cryptic pollinator species in L. anilitatus. The close morphological similarity of the three orchids, their sharing of the same pollinator and lack of evidence of a reproductive isolating mechanism, suggest they belong to the same biological species, C. parva. However, phylogenetic analysis is desirable to confirm the monophyly of the three morphospecies and the possible existence of polyploidy in C. villosissima merits investigation.

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“…Certes les définitions des rangs spé-cifique, susbspécifique et variétal demeurent empiriques, mais elles paraissent solides si elles sont éprouvées sur le terrain avant validation. Elles sont néanmoins calibrées par quelques repères d'ordre biologique (Malmgren, 2006) et évolutif (Bateman, 2001 ;Soliva et al, 2001). Il en ressort dans cet ouvrage une classification, limitée à l'Europe, proposant seulement 19 espèces totalisant 65 sous-espèces ainsi que quelques variétés supplémen-taires, auxquelles s'ajoutent cinq complexes hybridogènes partiellement fixés.…”

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Analyse d'ouvrage: Ophrys,the bee orchids of Europe

Véla¹

2008

Acta Botanica Gallica

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Molecular Phylogenetics of the Sexually Deceptive Orchid Genus Ophrys (Orchidaceae) Based on Nuclear and Chloroplast DNA Sequences

Cited by 93 publications

References 57 publications

Gene Flow Across Species Boundaries in Sympatric, Sexually Deceptive Ophrys (Orchidaceae) Species

Gene Flow Across Species Boundaries in Sympatric, Sexually Deceptive Ophrys (Orchidaceae) Species

Pollinator sharing by the sexually deceptive Green-comb Spider Orchids, Caladenia phaeoclavia, C. parva and C. villosissima (Orchidaceae: Caladeniinae): taxonomic considerations

Analyse d'ouvrage: Ophrys,the bee orchids of Europe

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