Nuclear and chloroplast DNA-based phylogenies of Chrysanthemoides Tourn. ex Medik. (Calenduleae; Asteraceae) reveal extensive incongruence and generic paraphyly, but support the recognition of infraspecific taxa in C. monilifera

Barker, Nigel P.; Howis, Seranne; Nordenstam, B.; Källersjö, Mari; Eldenäs, Pia; Griffioen, C.; Linder, H. P.

doi:10.1016/j.sajb.2009.05.006

Cited by 15 publications

(10 citation statements)

References 41 publications

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“…The incongruence between the two works can be explained by the use of two different genomes (chloroplast and nuclear) as well as the difference in the number of markers. The discordance between nuclear and plastid phylogenies has been largely documented for different plant groups (Soltis & Kuzoff, 1995; Yu et al, 2013) including several members of the Asteraceae family (Fehrer et al, 2007; Barker et al, 2009; Pelser et al, 2010), and we agree on the necessity of a combined approach to reconstruct the evolutionary history of the family. The extensive history of polyploidy (Barker et al, 2008; Smissen et al, 2011; Huang et al, 2016) and hybridization events at the beginning of the diversification of several Asteraceae lineages may also contribute to the incongruence between phylogenies generated by different types of markers (Pelser et al, 2010; Wang et al, 2014).…”

Section: Discussionsupporting

confidence: 75%

The importance of the Mexican taxa of Asteraceae in the family phylogeny

Rivera

Villaseñor

Terrazas

et al. 2020

J of Sytematics Evolution

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Asteraceae is the largest plant family in México with about 417 genera and 3113 species, and with more than 60% of them being endemic. Phylogenetic relationships at subfamily and tribal levels have been previously resolved employing both nuclear and plastid molecular markers. However, Asteraceae species native to Mexico have been underrepresented in such phylogenies. To tackle this issue, the taxon sampling of this study included 90 Asteraceae species native to México, four species from the Caribbean, 119 previously sequenced species, and six outgroups. With this sampling, all the Asteraceae subfamilies and all of the tribes recognized to date are represented. The analyzed dataset consisted of eleven chloroplast markers (atpB, matK, ndhC, ndhD, ndhF, ndhI, ndhJ, ndhK, rbcL, trnL‐trnF, and 23S‐trnA). We present two phylogenetic reconstructions obtained by maximum likelihood and pseudocoalescent methods. Besides, we present a time‐calibrated phylogeny, which is used to infer the best configuration of diversification rate shifts. Our results show that Mexican species are distributed mainly in the subfamily Asteroideae (80 species), followed by Cichorioideae (6 species), Carduoideae (2 species), and Mutisioideae (2 species). Four net diversification rate shifts were found: One near the base of the tree and four within Asteroideae subfamily. Our extended sampling of the family with the representation of native species to Mexico allowed us to identify important events in the evolutionary history of the family.

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Section: Discussionsupporting

confidence: 75%

The importance of the Mexican taxa of Asteraceae in the family phylogeny

Rivera

Villaseñor

Terrazas

et al. 2020

J of Sytematics Evolution

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“…mono based on microsatellite or SSR markers [24]. This discrepancy based on different types of molecular markers may be caused by incomplete lineage sorting and shared ancestral polymorphism and/or gene introgression between closely related species, as well as limited genetic information revealed by low evolutionary rate of the plastid genome [59–62]. It may be necessary to use highly variable SSRs or genome-wide SNPs to confirm our current results.…”

Section: Discussionmentioning

confidence: 71%

Multiple origins and the population genetic structure of Rubus takesimensis (Rosaceae) on Ulleung Island: Implications for the genetic consequences of anagenetic speciation

et al. 2019

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To determine the origin and genetic consequences of anagenesis in Rubus takesimensis on Ulleung Island, Korea, we compared the genetic diversity and population structure of R. takesimensis with those of its continental progenitor R. crataegifolius. We broadly sampled a total of 315 accessions in 35 populations and sequenced five noncoding regions of chloroplast DNA. Rubus takesimensis emerged as nonmonophyletic and several geographically diverse continental populations were likely responsible for the origin of R. takesimensis; the majority of R. takesimensis accessions were sisters to the clade containing accessions of R. crataegifolius, primarily from the Korean peninsula, while rare accessions from three populations shared common ancestors with the ones from the southern part of the Korean peninsula, Jeju Island, and Japan. A few accessions from the Chusan population originated independently from the Korean peninsula. Of 129 haplotypes, 81 and 48 were found exclusively in R. crataegifolius and R. takesimensis, respectively. We found unusually high genetic diversity in two regions on Ulleung Island and no geographic population structure. For R. crataegifolius, two major haplotype groups were found; one for the northern mainland Korean peninsula, and the other for the southern Korean peninsula and the Japanese archipelago. Compared with populations of R. crataegifolius sampled from Japan, much higher haplotype diversity was found in populations from the Korean peninsula. The patterns of genetic consequences in R. takesimensis need to be verified for other endemic species based on chloroplast DNA and independent nuclear markers to synthesize emerging patterns of anagenetic speciation on Ulleung Island.

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“…Our analyses indicate that once the reduction to a single seed takes place, the resulting achene‐like fruit becomes “locked in,” as there were no inferred gains of multi‐seededness or dehiscence after the loss of these characters. In fact, the only transition out of the achene fruit type involves the gain of fleshiness, which occurred only a few times and only in particular species of Asteraceae (Barker et al ). These “fleshy achenes” reflect shifts in dispersal syndrome, where birds, as opposed to abiotic factors are the primary dispersal agents.…”

Section: Discussionmentioning

confidence: 99%

Fruit Evolution and Diversification in Campanulid Angiosperms

Beaulieu

Donoghue

2013

Evolution

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Data Archived: Dryad doi: 10.5061/dryad.vb850 With increases in both the size and scope of phylogenetic trees, we are afforded a renewed opportunity to address long-standing comparative questions, such as whether particular fruit characters account for much of the variation in diversity among flowering plant clades. Studies to date have reported conflicting results, largely as a consequence of taxonomic scale and a reliance on potentially conservative statistical measures. Here we examine a larger and older angiosperm clade, the Campanulidae, and infer the rates of character transitions among the major fruit types, emphasizing the evolution of the achene fruits that are most frequently observed within the group. Our analyses imply that campanulids likely originated bearing capsules, and that all subsequent fruit diversity was derived from various modifications of this dry fruit type. We also found that the preponderance of lineages bearing achenes is a consequence of not only being a fruit type that is somewhat irreversible once it evolves, but one that also seems to have a positive association with diversification rates. Although these results imply the achene fruit type is a significant correlate of diversity patterns observed across campanulids, we conclude that it remains difficult to confidently and directly view this character state as the actual cause of increased diversification rates. Fruits are among the most characteristic and diverse structural features of angiosperms and are critical for the dispersal and establishment of seeds. The ability to disperse longer distances can facilitate speciation through geographic isolation, which has long suggested a possible relationship between different fruit types and diversification patterns (e.g., Herrera 1989; Eriksson and Bremer 1991; Tiffany and Mazer 1995;Dodd et al. 1999;Smith 2001). For instance, fleshy fruits promote seed dispersal by birds and mammals, which can increase the chances of establishing isolated populations, and hence higher rates of speciation. In fact, the repeated evolution of fleshy fruits is considered to have been an important driver of angiosperm diversity during the Late Cretaceous and Early Cenozoic. By contrast, angiosperms with dry fruits tend to broadcast their seeds, mostly through mechanical means, over relatively short distances. However, the elaboration of various structures (e.g., specializations of the calyx) can promote more efficient dispersal of dry fruits by wind and water, thereby increasing the probability of isolation and speciation.Despite a general interest in the impact of fruit type on angiosperm diversity, conflicting results are common among studies and no clear consensus has emerged. For example, fleshy fruits have been considered a major contributing factor to woody angiosperm diversity in the tropics only (e.g., Eriksson and

show abstract

Nuclear and chloroplast DNA-based phylogenies of Chrysanthemoides Tourn. ex Medik. (Calenduleae; Asteraceae) reveal extensive incongruence and generic paraphyly, but support the recognition of infraspecific taxa in C. monilifera

Cited by 15 publications

References 41 publications

The importance of the Mexican taxa of Asteraceae in the family phylogeny

The importance of the Mexican taxa of Asteraceae in the family phylogeny

Multiple origins and the population genetic structure of Rubus takesimensis (Rosaceae) on Ulleung Island: Implications for the genetic consequences of anagenetic speciation

Fruit Evolution and Diversification in Campanulid Angiosperms

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