Genome-wide SNP data reveal recent population structure ofHuidobria fruticosa(Loasaceae), a paleo-endemic lineage from the Atacama Desert DOI Open Access
Felix F. Merklinger, Yichen Zheng, Tim Böhnert

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 4, 2023

ABSTRACT The Atacama Desert is a biodiversity hotspot of neo-endemic radiation, where long-term aridity and complex physiographic processes create unique environmental setting. Current species assemblages are mainly concentrated in highly patchy loma formations, plant populations occurring these often geographically isolated from each other. Despite general consensus on the Atacama, climatological geological evidence points to repeated climate change, making an ideal system for studying population genetic unstable habitats. We analyzing structure within between Huidobria fruticosa , paleo-endemic lineage Desert, shed new light its biogeographic history broaden our understanding evolution life extreme aridity, as well response changing environment. To do this, we analyzed SNP data genotyping-by-sequencing 354 individuals 21 populations. Our results suggest that, despite being ancient lineage, current only reflects abiotic conditions over last 2 million years. therefore conclude that present distribution, together with evolutionary documented here, result climatic fluctuations prolonged periods hyperaridity during Pleistocene. Building this understanding, findings contribute global narrative highlights interplay change dynamics, emphasize importance deserts living laboratories deciphering how have historically adapted some most habitats Earth.

Language: Английский

Challenges and solutions to biodiversity conservation in arid lands DOI
Yuanming Zhang, Akash Tariq, Alice C. Hughes

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 857, P. 159695 - 159695

Published: Oct. 24, 2022

Language: Английский

Citations

88
Sulfate sources, biologic cycling, and mobility in Atacama Desert soils revealed by isotope signatures DOI
Swea Klipsch, Daniel Herwartz, Claudia Voigt

et al.

Global and Planetary Change, Journal Year: 2023, Volume and Issue: 230, P. 104290 - 104290

Published: Oct. 28, 2023

Language: Английский

Citations

12
Phylogeny based generic reclassification of Muscari sensu lato (Asparagaceae) using plastid and genomic DNA DOI Creative Commons
Tim Böhnert, Michael Neumann, Dietmar Quandt

et al.

Taxon, Journal Year: 2023, Volume and Issue: 72(2), P. 261 - 277

Published: Jan. 18, 2023

Abstract The grape hyacinth ( Muscari ) represents an important ornamental plant group in Asparagaceae subfamily Scilloideae, comprising some 80 species distributed mainly the Mediterranean. However, genus delimitation has repeatedly shifted over past two centuries and a general consensus not been reached so far. present study investigates phylogeny of s.l. (i.e., including disputed segregates Pseudomuscari Leopoldia with broad sampling about half currently recognized using both chloroplast markers trnK matK )‐ psbA , trnL‐trnF rpl16 genome‐wide single nucleotide polymorphism (SNP) data generated by double‐digest restriction site‐associated DNA sequencing (ddRAD). We perform concatenated maximum likelihood inference for datasets as well coalescent‐based approach principal component analysis (PCA) on ddRAD data. find that morphological characters traditionally used to distinguish different genera are diagnostic clades here retrieved. Also, deeply nested we therefore propose broadly defined five subgenera. subgenera roughly correspond previously entities, exception newly identified clade proposed M. subg. Pulchella nov. provide provisional assignment accepted taxa these

Language: Английский

Citations

11
Editorial preface to special issue: Earth-evolution at the Dry Limit DOI
Tony Reimann, Christine Heim, Dietmar Quandt

et al.

Global and Planetary Change, Journal Year: 2025, Volume and Issue: unknown, P. 104693 - 104693

Published: Jan. 1, 2025

Language: Английский

Citations

0
An Integrative Framework Reveals Widespread Gene Flow During the Early Diversification of Malvaceae S.L DOI
Weilong Yang, Pei‐Feng Liu, Jacob B. Landis

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Systematic and taxonomic revision of the genus Austrocactus (Cactaceae) based on morphology and genome wide SNP‐data DOI Creative Commons
Tim Böhnert, Felix F. Merklinger,

Elisabeth Sarnes

et al.

Taxon, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 23, 2025

Abstract The post‐Miocene climatic history of arid environments in South America has been identified as a key driver dispersal and diversification, particularly among plant groups such Cactaceae. Despite their iconic status, many cactus genera remain poorly understood, comprehensive taxonomic systematic revisions using morphological genomic data are complex time‐consuming, resulting few studies to date. Here we present study the genus Austrocactus , currently with 10 accepted species native southern Andean Argentina parts Chile. is based on an extensive sampling covering both overall range diversity genus. We used ddRADseq approach phylogenetic relationships incorporating 44 individuals representing all morphospecies, widespread represented by several samples geographical spectrum. were analyzed maximum likelihood multispecies coalescence‐based models, well principal component analyses, providing well‐supported robust evolutionary framework. Based data, propose revised classification genus, total 17 species, 5 which described new. also provide updated infrageneric two subgenera three sections, circumscription including descriptions respective key. Finally, suggest specific research directions focused integrating ecological modeling complement our work enhance biogeographic understanding these species.

Language: Английский

Citations

0
Nested singletons in molecular trees: Utility of adding morphological and geographical data from digitized herbarium specimens to test taxon concepts at species level in the case of Casearia (Salicaceae) DOI Creative Commons
Astrid de Mestier, Robert Lücking, Jorge Gutiérrez

et al.

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(1)

Published: Jan. 1, 2023

Abstract Using the genus Casearia , we assessed status of nested singletons: individual specimens corresponding to accepted species but in molecular trees appearing within clades closely related species. Normally, such cases would be left undecided, while on other hand, timely taxonomic decisions are required. We argue that morphological, chorological, and ecological data can informative illuminate patterns speciation. Their use provide a first step testing taxon concepts at level. focused five singletons . employed PCA cluster analysis assess phenotypic differentiation. geocoordinates, calculated niche space differentiation based 19 bioclim variables, by means equivalency similarity tests generated dot maps. found were morphologically distinctive two ( selloana C. manausensis ), relatively zizyphoides mariquitensis partially overlapping last case grandiflora ). For was broadly overlapping, it one narrowly no observed. Niche overlap, showed patterns. Given these data, interpret as presumably well‐distinguished taxa, their narrow distribution ranges suggesting recently emerging lineages. The three not clearcut. Morphological suggest particularly conspecific with arborea differences intriguing. Our approach reject notion potential synonymy phylogenetic placement for least cases. also shows complete lack which support synonymy.

Language: Английский

Citations

6
Genetic diversity of the Atacama Desert shrub Huidobria chilensis in the context of geography and climate DOI
K. Bechir Ferchichi, Tim Böhnert, Benedikt Ritter

et al.

Global and Planetary Change, Journal Year: 2024, Volume and Issue: 234, P. 104385 - 104385

Published: Feb. 11, 2024

Language: Английский

Citations

2
Two Sides of the Same Desert: Floristic Connectivity and Isolation Along the Hyperarid Coast and Precordillera in Peru and Chile DOI Creative Commons

Jonathan Ruhm,

Tim Böhnert, Jens Mutke

et al.

Frontiers in Ecology and Evolution, Journal Year: 2022, Volume and Issue: 10

Published: May 20, 2022

In this study we aim at refining our understanding of the floristic connectivity loma- and precordillera floras southern Peru northern Chile parameters determining vegetation cover in region. We used multivariate analyses to test for floristic- environmental similarity across 53 loma locations Chile. propose use predictive modeling estimating extent desert as a complementary method remote sensing. created habitat suitability models on coast based combination latent bioclimatic variables additional predictors using Maxent. found Peruvian Chilean lomas be strongly floristically differentiated, are lomas. Conversely, there is clear between both one hand other. Divergent conditions were retrieved separating lomas, while not differentiated precordilleras show gradual change conditions. Habitat retrieve gap along Chile, continuous belt suitable habitats Andean precordillera. Unsuitable north south border likely represents an ecogeographic barrier responsible divergence continuously precordilleras, explaining moderate differentiation corresponding floras. Our results underscore idea core acting from it has more limited isolating function Peru. also find extensive potentially so far undetected by methods

Language: Английский

Citations

9
Net diversification rates of the woody plant genus Petalidium (Acanthaceae) are highest in the ancient and arid Namib Desert DOI Creative Commons
Oriane Loiseau, Erin A. Tripp, WESSEL SWANEPOEL

et al.

Frontiers in Ecology and Evolution, Journal Year: 2023, Volume and Issue: 11

Published: May 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.

Language: Английский

Citations

5