Biogeography of Australian Camphorosmeae and Diversification in Climatic Space and Across Arid Habitat Types DOI Creative Commons
Jessica A. Berasategui, Anže Žerdoner Čalasan, Gudrun Kadereit

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(11)

Published: Nov. 1, 2024

ABSTRACT This study investigates the biogeography of Australian Camphorosmeae (Amaranthaceae s.l. ) lineage and how it relates to shifts in climatic niche habitat types. Building on previous research data resources, we integrate molecular phylogenetics, bioclimatic biogeographical models deepen our understanding diversification adaptation this group across Australia's diverse landscapes relation palaeoclimatic changes. For 159 species representing 12 genera, georeferenced distribution points were used define most informative variables using principal component analysis. Evolutionary niches types analysed, revealing clade‐specific adaptations different habitats conditions. Biogeographical analyses allowed us infer ancestral areas Australia relate their expansion over evolutionary time shifts. Preadaptation warm dry coupled with key periods aridification Australia, particularly during Late Miocene Pliocene, critical driving its through migration local varied arid Australia. Our suggest that ‘Riverine Desert’ offered suitable conditions for facilitated early widespread dispersal Western Eastern Desert. We hypothesise diverging lineages such as Roycea adapted later emerging ‘Desert Lake’ when spread Early Pliocene. Further, type occurred from ‘Shield Plain’, ‘Karst Plain’ ‘Sand also Pliocene Pleistocene once these emerged. illustrates complex interplay between ecological flexibility conservatism shaping biodiversity Camphorosmeae.

Language: Английский

Navigating phylogenetic conflict and evolutionary inference in plants with target capture data DOI Creative Commons
Elizabeth Joyce, Alexander N. Schmidt‐Lebuhn, Harvey K. Orel

et al.

Published: May 27, 2024

Target capture has quickly become a preferred approach for plant systematic and evolutionary research, marking step-change in the generation of data phylogenetic inference. While this advancement facilitated resolution many relationships, conflict continues to be reported, often attributed genome duplication, reticulation, deep coalescence or rapid speciation – processes that are particularly common evolution. The proliferation methods designed analyse target presence these can overwhelming researchers, especially students. In review, we guide researchers through bioinformatic workflow, with particular focus on robust inference conflict. Through highlight key considerations reducing artefactual conflict, synthesise strategies managing paralogs, explain causes measurement summarise current investigating biological underlying draw from examples Australian flora, review is broadly relevant any researcher working data. We conclude inherent inevitable but when properly managed, provide unprecedented insight into extraordinary complex histories plants.

Language: Английский

Citations

4
Australian biogeography, climate-dependent diversification and phylogenomics of the spectacular Chamelaucieae tribe (Myrtaceae) DOI Creative Commons
Francis J. Nge, Ed Biffin, Barbara Lynette Rye

et al.

Australian Systematic Botany, Journal Year: 2025, Volume and Issue: 38(1)

Published: Feb. 21, 2025

Chamelaucieae is a diverse tribe in Myrtaceae with ~800 species 37 genera distributed across Australia. We applied target capture sequencing using the Angiosperms353 probe set for 131 taxa as part of Genomics Australian Plants initiative. Sampling all (36) from 10 11 named subtribes, we present phylogenomic analysis tribe. This approach has allowed us to better resolve subtribal relationships tribe, resulting an updated classification and additional subtribe (total 12 subtribes including Triplarininae). Despite these advances, phylogenetic placements Stenostegiinae, Astarteinae, Micromyrtinae remain equivocal resolution should be focus future research. constructed dated phylogeny this genomic dataset investigate tribe’s biogeographic history diversification dynamics. estimate that crown radiation occurred Eocene (c. 42 Ma), ancestral area origin Australia unresolved. Subsequent divergence mostly south-west Western frequent dispersals there into semi-arid arid interior since Miocene (20 Ma). Dispersals out northern eastern were limited confined dispersal events interior. Using paleoenvironmental models show after initial radiation, declined rapidly until Eocene–Oligocene boundary extinction pulse event subsequently more slowly present, modest increase during Middle Climatic Optimum. No significant rate shifts detected within clades except Chamelauciinae. There was no geographic-dependent Our results add growing literature revealing high plant diversity due time accumulation attributed long-term climatic stability rather than elevated rates.

Language: Английский

Citations

0
Polyploidy linked with species richness but not diversification rates or niche breadth in Australian Pomaderreae (Rhamnaceae) DOI Creative Commons
Francis J. Nge, Timothy Hammer, Thaís Vasconcelos

et al.

Annals of Botany, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Abstract Background and Aims Polyploidy is an important evolutionary driver for plants has been linked with higher species richness increases in diversification rate. These correlations between ploidy plant radiations could be the result of polyploid lineages exploiting broader niche space novel niches due to their enhanced adaptability. The evolution its link across Australian continent not well understood. Here, we focus on Australasian Rhamnaceae tribe Pomaderreae. Methods We generated a densely sampled phylogeny (90 %, 215/240 species) used it test ploidy. obtained 30 orthologous nuclear loci per sample dated using treePL. Ploidy estimates each sequenced were nQuire, based phased sequence data. MiSSE obtain tip rates tested significant relationships also assessed level breadth, distributional records, modelling WorldClim Key Results extensive tribe, almost half (45 %) majority genera exhibiting this trait. found positive relationship polyploidy genus size (i.e. richness), but non-significant rates. did significantly wider occupancy Pomaderreae; however, allow transitions into wetter niches. Spatially, eastern Australia hotspot Pomaderreae contrast south-west Western Australia. Conclusions complex. Ancient polyploidization events likely played role species-rich genera. A lag time effect may explain uncoupling extant lineages. Further studies other groups are required validate these hypotheses.

Language: Английский

Citations

1
Biogeography of Australian Camphorosmeae and Diversification in Climatic Space and Across Arid Habitat Types DOI Creative Commons
Jessica A. Berasategui, Anže Žerdoner Čalasan, Gudrun Kadereit

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(11)

Published: Nov. 1, 2024

ABSTRACT This study investigates the biogeography of Australian Camphorosmeae (Amaranthaceae s.l. ) lineage and how it relates to shifts in climatic niche habitat types. Building on previous research data resources, we integrate molecular phylogenetics, bioclimatic biogeographical models deepen our understanding diversification adaptation this group across Australia's diverse landscapes relation palaeoclimatic changes. For 159 species representing 12 genera, georeferenced distribution points were used define most informative variables using principal component analysis. Evolutionary niches types analysed, revealing clade‐specific adaptations different habitats conditions. Biogeographical analyses allowed us infer ancestral areas Australia relate their expansion over evolutionary time shifts. Preadaptation warm dry coupled with key periods aridification Australia, particularly during Late Miocene Pliocene, critical driving its through migration local varied arid Australia. Our suggest that ‘Riverine Desert’ offered suitable conditions for facilitated early widespread dispersal Western Eastern Desert. We hypothesise diverging lineages such as Roycea adapted later emerging ‘Desert Lake’ when spread Early Pliocene. Further, type occurred from ‘Shield Plain’, ‘Karst Plain’ ‘Sand also Pliocene Pleistocene once these emerged. illustrates complex interplay between ecological flexibility conservatism shaping biodiversity Camphorosmeae.

Language: Английский

Citations

0