Plant migration under long‐lasting hyperaridity – phylogenomics unravels recent biogeographic history in one of the oldest deserts on Earth

New Phytologist, Год журнала: 2022, Номер 234(5), С. 1863 - 1875

Опубликована: Март 11, 2022

The post-Miocene climatic histories of arid environments have been identified as key drivers dispersal and diversification. Here, we investigate how history correlates with the historical biogeography Atacama Desert genus Cristaria (Malvaceae). We analyze phylogenetic relationships by using next-generation sequencing (NGS), molecular clock dating, Dispersal Extinction Cladogenesis Bayesian sampling approaches. employ a novel way to identify biogeographically meaningful regions well rarely utilized program permitting use dozens ancestral areas. Partial incongruence between established taxonomy our data argue for complex repeated introgression incomplete lineage sorting. originated in central southern part Desert, from there colonized other areas late Miocene onwards. more recently diverged lineages appear different habitats during pluvial phases Pliocene early Pleistocene. show that NGS combined near-comprehensive can provide an unprecedented degree resolution help correlate plant communities cycles phases.

Язык: Английский

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Screening of tolerance of Atriplex vulgatissima under zinc or lead experimental conditions. An integrative perspective by using the integrated biological response index (IBRv2).

Chemosphere, Год журнала: 2023, Номер 341, С. 140110 - 140110

Опубликована: Сен. 8, 2023

Язык: Английский

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Diversification of Camphorosmeae (Amaranthaceae s.l.) during the Miocene-Pliocene aridification of inland Australia

Perspectives in Plant Ecology Evolution and Systematics, Год журнала: 2024, Номер 64, С. 125811 - 125811

Опубликована: Июнь 20, 2024

The Australian Camphorosmeae represent a monophyletic lineage that diversified to include ca. 150 spp. across 12 genera, and populate large parts of arid Australia. Tracking the origin spread this ancestrally salt drought tolerant provides additional evidence about timing evolutionary history phylogenetic assembly habitats in Using customized RADseq approach, sequence data for 104 species representing all genera were generated included dating analyses. Furthermore, habitat type occurrences preferences clades recorded. As suspected, characters used delimit current do not support groups, as analyses yielded 17 statistically supported Maireana grade crown radiation Sclerolaena. diversification is clearly linked landscape changes emerging new types Australia since ancestral element likely arrived from temperate semi-arid continental Eurasia Middle Miocene. Migration was multidirectional followed west-to-east aridification. Crown group strongest during Pliocene promoted by expansion Riverine Desert subsequent colonization newly developing habitats. Rapid range expansion, fast saturation, well periodic contraction replacement habitats, may have caused rather species-poor earlier-divergent grade, compared continuously diversifying Sclerolaena clade.

Язык: Английский

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Australian biogeography, climate-dependent diversification and phylogenomics of the spectacular Chamelaucieae tribe (Myrtaceae)

Australian Systematic Botany, Год журнала: 2025, Номер 38(1)

Опубликована: Фев. 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.

Язык: Английский

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Nutritional composition and anti-nutrients of underutilized Australian indigenous edible halophytes – Saltbush, Seablite and Seapurslane

Journal of Food Composition and Analysis, Год журнала: 2022, Номер 115, С. 104876 - 104876

Опубликована: Сен. 5, 2022

Язык: Английский

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Investigating aerial diversity of non‐fungal eukaryotes across a 40° latitudinal transect using DNA metabarcoding

Austral Ecology, Год журнала: 2023, Номер 48(6), С. 1178 - 1194

Опубликована: Апрель 20, 2023

Abstract The high number of bipolar and widespread bryophyte microbial taxa in the Antarctic flora suggests effective Long‐Distance Dispersal (LDD) spores other propagules from lower latitudes even Northern Hemisphere to Antarctica sub‐Antarctic regions. However, few studies have attempted document transfer mechanisms by which potential newcomers may arrive Antarctica. Commonly suggested or assumed include transport air currents, adventitious with migrating vagrant birds, human assistance. In this study, we investigated biodiversity present along a 40° latitudinal transect, port city Rio de Janeiro, Brazil (ca. 22°S) Comandante Ferraz Station on King George Island (South Shetland Islands, ca. 62°S), maritime Antarctica, shed light role LDD species distribution. Air samples were collected October 2021 Brazilian polar support vessel Ary Rongel using filters membranes 0.22 μm. Total DNA was extracted Internal Transcribed Spacer (ITS2) sequence used for metabarcoding. A total 53 non‐fungal representing three kingdoms (most abundantly Viridiplantae) six phyla Bryophyta Magnoliophyta) assigned sequences found. Aerial greater closer coast generally decreased increasing latitude, although small increase apparent South Islands. are coastal biomes, proportion assignments represented more distant origin, supporting occurrence column.

Язык: Английский

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Net diversification rates of the woody plant genus Petalidium (Acanthaceae) are highest in the ancient and arid Namib Desert

Frontiers in Ecology and Evolution, Год журнала: 2023, Номер 11

Опубликована: Май 15, 2023

At present, tropical arid biomes house less woody plant species diversity than moist biomes, which could be due to lower rates of evolutionary diversification in the recent or distant past. Here, we study Petalidium (Acanthaceae), a genus 36 shrubs found Namib Desert southwest Africa, and surrounding areas. We generated new, nearly fully sampled temporally calibrated phylogeny for using RADseq SNP data secondary calibrations. then investigated variation net rate across phylogeny, ancestral climatic niche lineages link between two. find that conditions are linked with increased genus. Despite its great age, clearly hosts young radiations. This apparent contradiction can explained by scenario high turnover, this case potentially caused alternating hyper-arid relatively mesic phases. Hyper-arid phases result mortality extinction species, leading ecological opportunity during Taken together, our results contribute growing body literature shows evidence elevated Quaternary globe.

Язык: Английский

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Global distribution, climatic preferences and photosynthesis‐related traits of C₄ eudicots and how they differ from those of C₄ grasses

Ecology and Evolution, Год журнала: 2023, Номер 13(11)

Опубликована: Ноя. 1, 2023

Abstract C₄ is one of three known photosynthetic processes carbon fixation in flowering plants. It evolved independently more than 61 times multiple angiosperm lineages and consists a series anatomical biochemical modifications to the ancestral C 3 pathway increasing plant productivity under warm light‐rich conditions. The 4 eudicots belong seven orders 15 families, are phylogenetically less constrained those monocots entail an enormous structural ecological diversity. Eudicot likely syndrome along different evolutionary paths. Therefore, better understanding this diversity key evolution complex trait as whole. By compiling 1207 recognised species described literature presenting data among these species, we identify global centres richness high phylogenetic Furthermore, discuss climatic preferences context functional traits. We two hotspots eudicot diversity: arid regions Mexico/Southern United States Australia, which show similarly number genera but differ that situ. Further with many families South Africa, West Patagonia, Central Asia Mediterranean. In general, diverse deserts xeric shrublands, tropical subtropical grasslands, savannas shrublands. found occur areas annual precipitation grasses can be explained by frequently associated adaptations drought stress such others succulence salt tolerance. indicate utilising NAD‐ME decarboxylating enzyme grow drier using NADP‐ME indicating restrictions later system higher temperatures. conclude most lineages, ancestrally already drought‐adapted clades enabled further spread habitats colonise even areas.

Язык: Английский

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Rise and fall of a continental mesic radiation in Australia: spine evolution, biogeography, and diversification of Cryptandra (Rhamnaceae: Pomaderreae)

Botanical Journal of the Linnean Society, Год журнала: 2023, Номер 204(4), С. 327 - 342

Опубликована: Окт. 14, 2023

Abstract The Australian continent has experienced progressive aridification since the Miocene, spurring recent radiations of arid-adapted lineages and likely decline mesic biotic groups. While examples former have been relatively well-documented, post-Miocene declines non-arid sclerophyllous floras are less well understood. Here, we present a well-sampled time-calibrated nuclear phylogeny (140 accessions representing 60/65 species) an plant genus (Cryptandra Sm.: Rhamnaceae) using ancestral range reconstructions diversification analyses, elucidate its evolutionary history through space time. We used high-throughput sequencing to recover 30 orthologous loci BioGeoBEARS infer areas. show that present-day distribution Cryptandra can be explained by multiple vicariance events followed in situ with little exchange between regions. All models speciation rate after radiation Miocene (c. 23 Mya). This coincides episodes across Australia indicates this negatively affected expansion aridity. also there were no significant differences rates spinescent non-spinescent lineages, suggesting may legacies selection from extinct megaherbivores.

Язык: Английский

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Two Congeneric Shrubs from the Atacama Desert Show Different Physiological Strategies That Improve Water Use Efficiency under a Simulated Heat Wave

Plants, Год журнала: 2023, Номер 12(13), С. 2464 - 2464

Опубликована: Июнь 28, 2023

Desert shrubs are keystone species for plant diversity and ecosystem function. Atriplex clivicola deserticola (Amaranthaceae) native from the Atacama that show contrasting altitudinal distribution (A. clivicola: 0–700 m.a.s.l.; A. deserticola: 1500–3000 m.a.s.l.). Both possess a C4 photosynthetic pathway Kranz anatomy, traits adaptive to high temperatures. Historical records projections near future trends in increasing air temperature frequency of heat wave events these species’ habitats. Besides sharing pathway, it is not clear how their leaf-level physiological associated with photosynthesis water relations respond stress. We studied (gas exchange, chlorophyll fluorescence, status) before after simulated (HW). enhanced intrinsic use efficiency HW but via different mechanisms. clivicola, which has higher LMA than deserticola, enhances saving by closing stomata maintaining RWC (%) leaf Ψmd potential at similar values those measured HW. After HW, showed an increase Amax without concurrent changes gs significant reduction Ψmd. Chla fluorescence Thus, under stress, maximizes saving, whilst its performance. These (eco)physiological strategies consistent adaptation each local environmental conditions altitudes.

Язык: Английский

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