A target Capture Probe Set Useful for Deep- and Shallow-Level Phylogenetic Studies in Cactaceae

Genes, Journal Year: 2022, Volume and Issue: 13(4), P. 707 - 707

Published: April 17, 2022

The molecular phylogenies of Cactaceae have enabled us to better understand their systematics, biogeography, and diversification ages. However, most the phylogenetic relationships within major groups remain unclear, largely due lack an appropriate set markers resolve its contentious relationships. Here, we explored genome transcriptome assemblies available for identified putative orthologous regions shared among lineages subfamily Cactoideae. Then developed a probe set, named Cactaceae591, targeting both coding noncoding nuclear representatives from subfamilies Pereskioideae, Opuntioideae, We also sampled inter- intraspecific variation evaluate potential this panel be used in phylogeographic studies. retrieved on average 547 per sample. Targeting showed crucial resolving Cactaceae591 covers 13 genes with Angiosperms353 kit two plastid studies, enabling generated by our integrated angiosperm phylogenies, using these sequences. highlighted importance coalescent-based species tree approaches dataset infer accurate trees presence extensive incomplete lineage sorting family.

Language: Английский

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Phylogenomics and continental biogeographic disjunctions: insight from the Australian starflowers (Calytrix)

American Journal of Botany, Journal Year: 2021, Volume and Issue: 109(2), P. 291 - 308

Published: Oct. 21, 2021

Continental-scale disjunctions and associated drivers are core research interests in biogeographic studies. Here, we selected a species-rich Australian plant genus (Calytrix; Myrtaceae) as case study to investigate these patterns. Species of this endemic starflower have disjunct distribution across the mesic fringes continent largely absent from arid center.We used high-throughput sequencing generate unprecedented resolution near complete species-level nuclear plastid phylogenies for Calytrix. BioGeoBEARS stochastic mapping were infer ancestral areas, relative contributions vicariance dispersal events, directionality dispersal.Present-day Calytrix explained by combination scenarios: (1) retreat multiple lineages continental center more Australia became progressively arid, with subsequent extinction well (2) origination southwestern (SWA) clades. The SWA biodiversity hotspot is major diversification most common source area dispersals, originating subsequently spreading adjacent Eremaean region.Our results suggest that extinction, result cooling drying Eocene-Miocene, shaped present-day biogeography We hypothesize peripheral pattern, which similar African Rand flora, may explain many other groups. Further studies densely sampled required test hypothesis.

Language: Английский

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Peeling back the layers: First phylogenomic insights into the Ledebouriinae (Scilloideae, Asparagaceae)

Molecular Phylogenetics and Evolution, Journal Year: 2022, Volume and Issue: 169, P. 107430 - 107430

Published: Feb. 5, 2022

Language: Английский

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Strong plastid degradation is consistent within section Chondrophyllae, the most speciose lineage of Gentiana

Ecology and Evolution, Journal Year: 2022, Volume and Issue: 12(8)

Published: Aug. 1, 2022

Abstract Recovering phylogenetic relationships in lineages experiencing intense diversification has always been a persistent challenge evolutionary studies, including Gentiana section Chondrophyllae sensu lato (s.l.). Indeed, this subcosmopolitan taxon encompasses more than 180 mostly annual species distributed around the world. We sequenced and assembled 22 new plastomes representing 21 s.l. In addition to previously released plastome data, our study includes all main within section. reconstructed their based on protein‐coding genes recombinant DNA (rDNA) cistron sequences, then investigated structural evolution as well divergence time. Despite an admittedly humble cover overall, we recovered well‐supported tree found significant discordance between taxonomic treatments. Our results show that G. capitata leucomelaena diverged early section, which is further divided into two clades. The time estimation showed evolved second half of Oligocene. had smallest average size (128 KB) tribe Gentianeae (Gentianaceae), with frequent gene sequence losses such ndh complex its flanking regions. addition, detected both expansion contraction inverted repeat (IR) suggests degradation parallels group, illustrates strong treatments, now need be carefully revised.

Language: Английский

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The genetic mechanisms underlying the convergent evolution of pollination syndromes in the Neotropical radiation of Costus L.

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: Sept. 8, 2022

Selection together with variation in floral traits can act to mold form, often driven by a plant's predominant or most effective pollinators. To investigate the evolution of associated pollination, we developed phylogenetic framework for evaluating tempo and mode pollination shifts across genus

Language: Английский

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