Resolving phylogenetic relationships of the recently radiated carnivorous plant genus Sarracenia using target enrichment

Stephens, Jessica D.; Rogers, Willie L.; Heyduk, Karolina; Cruse‐Sanders, Jennifer; Determann, Ron O.; Glenn, Travis C.; Malmberg, Russell L.

doi:10.1016/j.ympev.2015.01.015

Cited by 81 publications

(107 citation statements)

References 55 publications

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“…Coalescent methods on the other hand are able to produce accurate species trees in comparison to concatenation methods when ILS is present and there is good signal in the gene trees (Liu et al, ; Degnan & Rosenberg, ; Edwards, ). A number of recent phylogenomic studies using both concatenated and coalescent methods (Song et al, ; Stephens et al, ; Folk et al, ) resulted in phylogenies that were largely congruent, but it is clear in Hawaiian Cyrtandra that the high level of ILS has influenced the topology of the concatenated phylogeny. ILS is expected in Hawaiian Cyrtandra due to its young age and is evident through the quartet values generated in ASTRAL (Fig.…”

Section: Discussionmentioning

confidence: 99%

Diversification of HawaiianCyrtandra(Gesneriaceae) under the influence of incomplete lineage sorting and hybridization

Kleinkopf

Roberts

Wagner

et al. 2019

J of Sytematics Evolution

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Cyrtandra (Gesneriaceae) is a genus of flowering plants with over 800 species distributed throughout Southeast Asia and the Pacific Islands. On the Hawaiian Islands, 60 named species and over 89 putative hybrids exist, most of which are identified on the basis of morphology. Despite many previous studies on the Hawaiian Cyrtandra lineage, questions regarding the reconciliation of morphology and genetics remain, many of which can be attributed to the relatively young age and evidence of hybridization between species. We utilized targeted enrichment, high‐throughput sequencing, and modern phylogenomics tools to test 31 Hawaiian Cyrtandra samples (22 species, two putative hybrids, four species with two samples each, one species with four samples) and two outgroups for species relationships and hybridization in the presence of incomplete lineage sorting (ILS). Both concatenated and species‐tree methods were used to reconstruct species relationships, and network analyses were conducted to test for hybridization. We expected to see high levels of ILS and putative hybrids intermediate to their parent species. Phylogenies reconstructed from the concatenated and species‐tree methods were highly incongruent, most likely due to high levels of incomplete lineage sorting. Network analyses inferred gene flow within this lineage, but not always between taxa that we expected. Multiple hybridizations were inferred, but many were on deeper branches of the island lineages suggesting a long history of hybridization. We demonstrated the utility of high‐throughput sequencing and a phylogenomic approach using 569 loci to understanding species relationships and gene flow in the presence of ILS.

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Section: Discussionmentioning

confidence: 99%

Diversification of HawaiianCyrtandra(Gesneriaceae) under the influence of incomplete lineage sorting and hybridization

Kleinkopf

Roberts

Wagner

et al. 2019

J of Sytematics Evolution

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“…Despite recent efforts in the molecular analysis of various carnivorous plant species, no lifestyle-specific genes have as yet been identified (Ibarra-Laclette et al 2011Leushkin et al 2013;Fleischmann et al 2014;Barta et al 2015;Cao et al 2015;Carretero-Paulet et al 2015a,b;Stephens et al 2015;Tran et al 2015). To gain mechanistic insights into the molecular processes underlying the carnivory syndrome, we combined ultrastructural, physiological, and proteomic analyses with thorough transcriptome sequencing to analyze the prey-dependent changes in gross gene expression patterns and nutrient transport in relation to the endocrine biology of the glands.…”

Section: [Supplemental Materials Is Available For This Article]mentioning

confidence: 99%

Venus flytrap carnivorous lifestyle builds on herbivore defense strategies

et al. 2016

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Although the concept of botanical carnivory has been known since Darwin's time, the molecular mechanisms that allow animal feeding remain unknown, primarily due to a complete lack of genomic information. Here, we show that the transcriptomic landscape of the Dionaea trap is dramatically shifted toward signal transduction and nutrient transport upon insect feeding, with touch hormone signaling and protein secretion prevailing. At the same time, a massive induction of general defense responses is accompanied by the repression of cell death–related genes/processes. We hypothesize that the carnivory syndrome of Dionaea evolved by exaptation of ancient defense pathways, replacing cell death with nutrient acquisition.

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“…3a) are hooded with concealed entrances. Forms of Sarracenia minor show specificity towards either flying insects (tall pitchers) or ground-dwelling prey (shorter pitchers with dense trichomes) depending on habitat differences (Stephens et al, 2015).…”

Section: Reviewmentioning

confidence: 99%

Convergent and divergent evolution in carnivorous pitcher plant traps

2017

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Contents Summary1035I.Introduction1035II.Evolution of the pitcher1036III.Convergent evolution1036IV.Divergent evolution1038V.Adaptive radiation and speciation1040VI.Conclusions and perspectives1040Acknowledgements1040References1040 Summary The pitcher trap is a striking example of convergent evolution across unrelated carnivorous plant lineages. Convergent traits that have evolved across pitcher plant lineages are essential for trap function, suggesting that key selective pressures are in action. Recent studies have also revealed patterns of divergent evolution in functional pitcher morphology within genera. Adaptations to differences in local prey assemblages may drive such divergence and, ultimately, speciation. Here, we review recent research on convergent and divergent evolution in pitcher plant traps, with a focus on the genus Nepenthes, which we propose as a new model for research into adaptive radiation and speciation.

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Resolving phylogenetic relationships of the recently radiated carnivorous plant genus Sarracenia using target enrichment

Cited by 81 publications

References 55 publications

Diversification of HawaiianCyrtandra(Gesneriaceae) under the influence of incomplete lineage sorting and hybridization

Diversification of HawaiianCyrtandra(Gesneriaceae) under the influence of incomplete lineage sorting and hybridization

Venus flytrap carnivorous lifestyle builds on herbivore defense strategies

Convergent and divergent evolution in carnivorous pitcher plant traps

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