Adaptive divergence in shoot gravitropism creates hybrid sterility in an Australian wildflower

Proceedings of the National Academy of Sciences, Год журнала: 2021, Номер 118(47)

Опубликована: Ноя. 17, 2021

Natural selection is responsible for much of the diversity we see in nature. Just as it drives evolution new traits, can also lead to species. However, unclear whether natural conferring adaptation local environments drive speciation through hybrid sterility between populations. Here, show that adaptive divergence shoot gravitropism, ability a plant's bend upwards response downward pull gravity, contributes an Australian wildflower, Senecio lautus We find gravitropism has evolved multiple times association with plant height adjacent populations inhabiting contrasting environments, suggesting these traits have by selection. directly tested this prediction using population subjected eight rounds recombination and three field. Our experiments revealed responds expected direction locally adapted population. Using advanced population, discovered individuals extreme differences had more sterile crosses than similar gravitropic responses, which were largely fertile, indicating trait genetically correlated sterility. results suggest create sterility, thus revealing evolutionary connection origin

Язык: Английский

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Detecting (non)parallel evolution in multidimensional spaces: angles, correlations and eigenanalysis

Biology Letters, Год журнала: 2022, Номер 18(2)

Опубликована: Фев. 1, 2022

Parallelism between evolutionary trajectories in a trait space is often seen as evidence for repeatability of phenotypic evolution, and angles play pivotal role the analysis parallelism. However, properties multidimensional spaces have not been widely appreciated by biologists. To remedy this situation, study provides brief overview on geometric statistical aspects spaces. Under null hypothesis that trajectory vectors no preferred directions (i.e. uniform distribution hypersphere), angle two independent concentrated around right angle, with more pronounced peak higher-dimensional space. This probability closely related to

Язык: Английский

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Phylogenomics and integrative taxonomy reveal two new species of Amana (Liliaceae)

Plant Diversity, Год журнала: 2022, Номер 45(1), С. 54 - 68

Опубликована: Март 24, 2022

Until now the genus Amana (Liliaceae), known as 'East Asian tulips', has contained just seven species. In this study, a phylogenomic and integrative taxonomic approach was used to reveal two new species, nanyueensis from Central China A. tianmuensis East China. resembles edulis in possessing densely villous-woolly bulb tunic opposite bracts, but differs its leaves anthers. erythronioides three verticillate bracts yellow anthers, aspects of bulbs. These four species are clearly separated each other principal components analysis based on morphology. Phylogenomic analyses plastid CDS further support delimitation suggests they closely related edulis. Cytological shows that both diploid (2n = 2x 24), different edulis, which is either (northern populations) or tetraploid (southern populations, 2n 4x 48). The pollen morphology similar (single-groove germination aperture), quite because presence sulcus membrane, creates illusion double grooves. Ecological niche modelling also revealed differentiation between tianmuensis.

Язык: Английский

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Multi-Response Phylogenetic Mixed Models: Concepts and Application

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2022, Номер unknown

Опубликована: Дек. 15, 2022

Abstract The scale and resolution of trait databases molecular phylogenies is increasing rapidly. These resources permit many open questions in comparative biology to be addressed with the right statistical tools. Multi-response (MR) phylogenetic mixed models (PMM) offer great potential for multivariate analyses evolution. While flexible powerful, these methods are not often employed by researchers ecology evolution, reflecting a specialised technical literature that creates barriers usage biologists. Here we present practical accessible guide MR-PMM. We begin review single-response (SR) PMM introduce key concepts outline limitations this approach characterizing patterns co-evolution. emphasise MR-PMM as preferable involving multiple species traits, due explicit decomposition covariance across levels model hierarchy. discuss multilevel distributional models, meta-analyses, extensions non-Gaussian response traits. highlight techniques causal inference using precision matrices, well advanced topics including prior specification latent factor models. Using simulated data visual examples, interpretation, prediction, validation. implement discussed example plant functional traits demonstrate general utility handling complex real world datasets. Finally, emerging synthesis made possible MR-PMM, strengths weaknesses, recommendations analysts. To complement material, provide extensive online tutorials side-by-side implementations two popular R packages, MCMCglmm brms .

Язык: Английский

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Population genomic consequences of life‐history and mating system adaptation to a geothermal soil mosaic in yellow monkeyflowers

Evolution, Год журнала: 2022, Номер 76(4), С. 765 - 781

Опубликована: Март 10, 2022

Local selection can promote phenotypic divergence despite gene flow across habitat mosaics, but adaptation itself may generate substantial barriers to genetic exchange. In plants, life-history, phenology, and mating system have been proposed differentiation in sympatry. this study, we investigate variation Mimulus guttatus (yellow monkeyflowers) a geothermal soil mosaic Yellowstone National Park (YNP). Plants from thermal annual nonthermal perennial habitats were heritably differentiated for life-history traits, consistent with local the ephemeral thermal-soil growing season. However, genome-wide primarily clustered plants by geographic region, little sorting habitat. The one exception was an extreme population also isolated 200 m geographical gap of no intermediate Individual inbreeding coefficients (FIS) higher (and predicted trait variation) pairs showed greater isolation distance at (<1 km) scales. Finally, YNP does not reuse widespread inversion that underlies M. ecotypes range-wide, suggesting novel mechanism. Overall, work suggests strong enough shape individual patterns necessarily incipient speciation without barriers.

Язык: Английский

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Predictable and divergent change in the multivariate P-matrix during parallel adaptation

The American Naturalist, Год журнала: 2024, Номер 204(1), С. 15 - 29

Опубликована: Март 5, 2024

Язык: Английский

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Unravelling the factors of evolutionary repeatability: insights and perspectives on predictability in evolutionary biology

Frontiers in Ecology and Evolution, Год журнала: 2024, Номер 12

Опубликована: Апрель 23, 2024

Evolutionary biology was previously considered a historical science with predictions about evolutionary trajectories believed to be near impossible. The development of high throughput sequencing and data analysis technologies has challenged this belief, provided an abundance that yields novel insights into processes. are now increasingly being used develop fundamental knowledge evolving systems and/or demonstrate control. Here we investigate the factors make repeatability more or less likely increase accuracy predictions. We identify outstanding questions provide potential starting point determine how is affected by genetic relatedness.

Язык: Английский

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Uncovering the genetic architecture of parallel evolution

Molecular Ecology, Год журнала: 2023, Номер 32(20), С. 5575 - 5589

Опубликована: Сен. 23, 2023

Identifying the genetic architecture underlying adaptive traits is exceptionally challenging in natural populations. This because associations between not only mask targets of selection but also create correlated patterns genomic divergence that hinder our ability to isolate causal effects. Here, we examine repeated evolution components auxin pathway have contributed replicated loss gravitropism (i.e. a plant bend response gravity) multiple populations Senecio lautus species complex Australia. We use powerful approach which combines parallel population genomics with association mapping Multiparent Advanced Generation Inter-Cross (MAGIC) break down and trait correlations reveal how evolve during evolution. sequenced shoot gravitropism-related gene regions 80 individuals from six (three events) 133 MAGIC derived two recently diverged show artificial tail on recreates set 55 evolved repeatedly species, 50 are directly associated population. Our work creates strong link variation contributing by selection, paving way understand origin maintenance adaptations

Язык: Английский

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Multiple Routes to Animal Consciousness: Constrained Multiple Realizability Rather Than Modest Identity Theory

Frontiers in Psychology, Год журнала: 2021, Номер 12

Опубликована: Сен. 24, 2021

The multiple realizability thesis (MRT) is an important philosophical and psychological concept. It says any mental state can be constructed by (MR), meaning in many distinct ways from different physical parts. goal of our study to find if the MRT applies consciousness among animals. Many things have been written about but ones most applicable animal are Shapiro a 2004 book called Mind Incarnate Polger their 2016 work, Multiple Realization Book. Standard, classical has around since 1967 it that very realizations, nearly unlimited manner. To contrary, Shapiro’s reasoned physical, physiological, historical constraints force traits evolve just few, limited directions, which seen as convergent evolution associated neural lineages. This his constraint (MCT). We examined animals found arose independently three clades—vertebrates, arthropods, cephalopod mollusks—all share consciousness-associated traits: elaborate sensory organs brains, high capacity for memory, directed mobility, etc. These constrained, convergently evolved routes fit original MCT. More recently, presented much same changed its name MCT “modest identity thesis.” Furthermore, they argued against almost all classically offered instances MR evolution, especially evidence plasticity differently expanded cerebrums mammals birds. In contrast, we argue some these examples indeed valid correction better account clades. And still agree convergence refute standard, unconstrained, MRT.

Язык: Английский

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Genomic basis and phenotypic manifestation of (non‐)parallel serpentine adaptation in Arabidopsis arenosa

Evolution, Год журнала: 2022, Номер 76(10), С. 2315 - 2331

Опубликована: Авг. 11, 2022

Parallel evolution is common in nature and provides one of the most compelling examples rapid environmental adaptation. In contrast to recent burst studies addressing genomic basis parallel evolution, integrative linking phenotypic parallelism are scarce. Edaphic islands toxic serpentine soils provide ideal systems for studying adaptation plants, imposing strong, spatially replicated selection on recently diverged populations. We leveraged threefold independent Arabidopsis arenosa combined reciprocal transplants, ion uptake phenotyping, available genome-wide polymorphisms test if manifested a similar extent at both levels. found pervasive functional traits yet with varying magnitude fitness differences that was congruent neutral genetic differentiation between Limited costs suggest absence soil-driven trade-offs. On other hand, gene level significant, although relatively minor. Therefore, similarly modified phenotypes, example, arose possibly by different loci pathways. summary, we bring evidence important role redundancy involving polygenic architecture.

Язык: Английский

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