Phylogeny of the Centaurea group (Centaurea, Compositae) – Geography is a better predictor than morphology

Hilpold, Andreas; Vilatersana, Roser; Susanna, Alfonso; Meseguer, Andrea S.; Boršić, Igor; Constantinidis, Theophanis; Filigheddu, Rossella Speranza; Romaschenko, Konstantin; Suárez‐Santiago, Víctor N.; Tuğay, Osman; Uysal, Tuna; Pfeil, Bernard E.; Garcia‐Jacas, Núria

doi:10.1016/j.ympev.2014.04.022

Cited by 57 publications

(72 citation statements)

References 83 publications

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“…Our chromosome count, performed on plants from the locus classicus (Brullo et al 2001, Peruzzi et al 2015, is the first for this species (Bedini et al 2010 onwards) and confirms the basic chromosome number x = 9 typical of C. sect. Phalolepis (Hilpold et al 2014).…”

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confidence: 99%

Chromosome numbers for the Italian flora: 5

Peruzzi¹,

Astuti²,

Caparelli³

et al. 2018

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mentioning

confidence: 99%

Chromosome numbers for the Italian flora: 5

Peruzzi¹,

Astuti²,

Caparelli³

et al. 2018

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“…Investigations based on various nuclear and plastid DNA sequence markers have resulted in poorly resolved gene trees and networks with particular alleles crossing taxon borders (Bor si c et al, 2011;Löser, 2012; see cpDNA analyses in the Results section). Recent investigations into the tribe Carduae (Barres et al, 2013) and the genus Centaurea (Hilpold et al, 2014) estimated by molecular dating that the crown diversification between Cyanus annuals and perennials as well as between the two chromosome lineages (x ¼ 10 and x ¼ 11) of Cyanus perennials dates back to the late Tertiary (Late Miocene/Pliocene; $3Á8-8Á8 million years ago). The extensive sharing of plastid haplotypes among accessions of both chromosome lineages detected in our study thus suggests that there was not enough time between each speciation event for informative mutations to emerge and for lineage sorting to take place (Jakob and Blattner, 2006;Maddison and Knowles, 2006;Moreno-Letelier et al, 2013).…”

Section: Aflps Help Disentangle the Evolution And Biogeography Of Cyamentioning

confidence: 99%

“…S1) might indicate colonization of the West Mediterranean through North Africa (cf. Barres et al, 2013;Hilpold et al, 2014).…”

Section: Aflps Help Disentangle the Evolution And Biogeography Of Cyamentioning

confidence: 99%

“…S1) might be explained by long-term isolation from their close relatives. Alternatively, Calabrian tetraploids could be of hybrid origin, most likely derived from a cross between a tetraploid formed by polyploidization of C. lingulatus and another tetraploid related to C. pichleri from Greece, which possibly came into contact especially during the Pleistocene era (Petit et al, 2003;Hewitt, 2011, Barres et al, 2013Hilpold et al, 2014).…”

Section: Aflps Help Disentangle the Evolution And Biogeography Of Cyamentioning

confidence: 99%

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On the origins of Balkan endemics: the complex evolutionary history of theCyanus napulifergroup (Asteraceae)

Olšavská

Slovák

Marhold

et al. 2016

Ann Bot

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Background and Aims The Balkan Peninsula is one of the most important centres of plant diversity in Europe.Here we aim to fill the gap in the current knowledge of the evolutionary processes and factors modelling this astonishing biological richness by applying multiple approaches to the Cyanus napulifer group.Methods To reconstruct the mode of diversification within the C. napulifer group and to uncover its relationships with potential relatives with x ¼ 10 from Europe and Northern Africa, we examined variation in genetic markers (amplified fragment length polymorphisms [AFLPs]; 460 individuals), relative DNA content (4 0 ,6-diamidino-2-phenylindole [DAPI] flow cytometry, 330 individuals) and morphology (multivariate morphometrics, 40 morphological characters, 710 individuals). To elucidate its evolutionary history, we analysed chloroplast DNA (cpDNA) sequences of the genus Cyanus deposited in the GenBank database.Key Results The AFLPs revealed a suite of closely related entities with variable levels of differentiation. The C. napulifer group formed a genetically well-defined unit. Samples outside the group formed strongly diversified and mostly species-specific genetic lineages with no further geographical patterns, often characterized also by a different DNA content. AFLP analysis of the C. napulifer group revealed extensive radiation and split it into nine allopatric (sub)lineages with varying degrees of congruence among genetic, DNA-content and morphological patterns. Genetic admixture was usually detected in contact zones between genetic lineages. Plastid data indicated extensive maintenance of ancestral variation across Cyanus perennials.Conclusion The C. napulifer group is an example of a rapidly and recently diversified plant group whose genetic lineages have evolved in spatio-temporal isolation on the topographically complex Balkan Peninsula. Adaptive radiation, accompanied in some cases by long-term isolation and hybridization, has contributed to the formation of this species complex and its mosaic pattern.

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“…Centaurea constitutes an excellent model for analyzing the speciation and diversification processes in the region. The main centres of diversification of Centaurea coincide largely with the main refugia defined in the Mediterranean789, one of them being the Mediterranean part of the Anatolian Peninsula6. In fact, Centaurea is the third genus with more endemic species of Turkey10 and the number of species is constantly increasing since the publication of Davis Flora of Turkey 11.…”

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Speciation and genetic diversity in Centaurea subsect. Phalolepis in Anatolia

López‐Pujol

López-Vinyallonga

Susanna

et al. 2016

Sci Rep

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Mountains of Anatolia are one of the main Mediterranean biodiversity hotspots and their richness in endemic species amounts for 30% of the flora. Two main factors may account for this high diversity: the complex orography and its role as refugia during past glaciations. We have investigated seven narrow endemics of Centaurea subsection Phalolepis from Anatolia by means of microsatellites and ecological niche modelling (ENM), in order to analyse genetic polymorphisms and getting insights into their speciation. Despite being narrow endemics, all the studied species show moderate to high SSR genetic diversity. Populations are genetically isolated, but exchange of genes probably occurred at glacial maxima (likely through the Anatolian mountain arches as suggested by the ENM). The lack of correlation between genetic clusters and (morpho) species is interpreted as a result of allopatric diversification on the basis of a shared gene pool. As suggested in a former study in Greece, post-glacial isolation in mountains would be the main driver of diversification in these plants; mountains of Anatolia would have acted as plant refugia, allowing the maintenance of high genetic diversity. Ancient gene flow between taxa that became sympatric during glaciations may also have contributed to the high levels of genetic diversity.

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Phylogeny of the Centaurea group (Centaurea, Compositae) – Geography is a better predictor than morphology

Cited by 57 publications

References 83 publications

Chromosome numbers for the Italian flora: 5

Chromosome numbers for the Italian flora: 5

On the origins of Balkan endemics: the complex evolutionary history of theCyanus napulifergroup (Asteraceae)

Speciation and genetic diversity in Centaurea subsect. Phalolepis in Anatolia

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