Evolution最新文献_第9页

Intraspecific gene regulation in cis- and trans.

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-01-27 DOI: 10.1093/evolut/qpaf014

Sylvia M Durkin, Michael W Nachman

{"title":"Intraspecific gene regulation in cis- and trans.","authors":"Sylvia M Durkin, Michael W Nachman","doi":"10.1093/evolut/qpaf014","DOIUrl":"https://doi.org/10.1093/evolut/qpaf014","url":null,"abstract":"Changes in gene expression underlie much of evolution and occur via either cis-acting mutations, which lie near the affected gene and act in a context specific manner, or trans-acting mutations, which may be far from the affected gene and act through diffusible molecules such as transcription factors. A commonly held view is that most expression variation within species is controlled in trans- while expression differences between species are largely controlled in cis-. Here, we summarize recent intraspecific gene regulation studies and find, contrary to this widely held view, that many studies in diverse taxa have revealed a large role for cis-acting mutations underlying expression variation within species. A review of the existing literature also shows that preparations using whole organisms rather than individual tissues may be biased towards identifying trans-regulation. Moreover, we note several examples of predominantly cis-acting regulation in recently diverged populations adapted to different environments. We highlight the challenges of drawing general conclusions from comparisons among studies that use different methodologies and we offer suggestions for studies that will address outstanding questions concerning the evolution of gene regulation.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143046100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diverging evolutionary trajectories for palm seed sizes in mainland Africa and Madagascar.

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-01-26 DOI: 10.1093/evolut/qpaf010

Karen V Pham, Lee Hsiang Liow, Sarah J Ivory

{"title":"Diverging evolutionary trajectories for palm seed sizes in mainland Africa and Madagascar.","authors":"Karen V Pham, Lee Hsiang Liow, Sarah J Ivory","doi":"10.1093/evolut/qpaf010","DOIUrl":"https://doi.org/10.1093/evolut/qpaf010","url":null,"abstract":"Seed size is a trait which determines survival rates for individual plants and can vary as a result of numerous trade-offs. In the palm family (Arecaceae) today, there is great variation in seed sizes. Past studies attempting to establish drivers for palm seed evolution have sometimes yielded contradictory findings in part because modern seed size variations are complicated by long-term legacies, including biogeographic differences across lineages. Here, we examined palm seed size evolution in two adjacent regions (mainland Africa and Madagascar) utilizing single- and multi-regime Brownian Motion and Ornstein-Uhlenbeck processes. We explicitly take into account species' evolutionary histories to investigate whether there may be shared evolutionary pressures over regional scales. We found that regional selection pressures do exist for palm seed lengths, but these pressures are distinct in mainland Africa and Madagascar, despite the two regions' proximity. Our study indicates that evolutionary drivers may differ in these two regions, highlighting the importance of re-considering the widespread assumption to view mainland Africa and Madagascar as a single evolutionary region.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143037725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Divergence in genetic (co)variances and the alignment of gmax with phenotypic divergence. 遗传（co）变异的差异和gmax与表型差异的比对。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-01-22 DOI: 10.1093/evolut/qpaf009

Will M C Jarvis, Vincent Careau, Howard D Rundle

{"title":"Divergence in genetic (co)variances and the alignment of gmax with phenotypic divergence.","authors":"Will M C Jarvis, Vincent Careau, Howard D Rundle","doi":"10.1093/evolut/qpaf009","DOIUrl":"https://doi.org/10.1093/evolut/qpaf009","url":null,"abstract":"To better understand the sources of biological diversity in nature, we need information on the mechanisms underlying population divergence. Biological systems with patterns of naturally occurring adaptive variation among populations can provide insight into the genetic architecture of diverging traits and the influence of genetic constraints on responses to selection. Using a system of reproductive character displacement in the North American mushroom-feeding fly Drosophila subquinaria, we assessed patterns of genetic (co)variance among a suite of chemical signaling traits and divergence in this pattern among populations. D. subquinaria exhibits stronger reproductive isolation against the closely related Drosophila recens in sympatry, where both female mating preferences and male chemical signaling traits have diverged from the ancestral allopatric populations. We collected three wild populations from each region and, in the lab, characterized the phenotypic divergence in these traits, as well as the additive genetic (co)variance structure (G-matrix), via replicate breeding designs. We found divergence between allopatric and sympatric D. subquinaria in the shape and size of the G-matrix, and that the leading axis of genetic variance (gmax) had changed in sympatry to come into alignment with the primary axis of phenotypic divergence between the sympatric and allopatric regions.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143002647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Small-scale genetic differentiation in mean flowering time, but not in plasticity, along a geothermal heating gradient. 小尺度遗传分化在平均开花时间，而不是可塑性，沿地热加热梯度。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-01-20 DOI: 10.1093/evolut/qpaf007

Alicia Valdés, Vigdís F Helmutsdóttir, Bryndís Marteinsdóttir, Johan Ehrlén

{"title":"Small-scale genetic differentiation in mean flowering time, but not in plasticity, along a geothermal heating gradient.","authors":"Alicia Valdés, Vigdís F Helmutsdóttir, Bryndís Marteinsdóttir, Johan Ehrlén","doi":"10.1093/evolut/qpaf007","DOIUrl":"https://doi.org/10.1093/evolut/qpaf007","url":null,"abstract":"Genetic differentiation in traits is assumed to frequently occur in response to divergent natural selection. For example, developmental traits might respond to differences in climate. However, little is known about when and at which spatial scales environmental differences lead to genetic differentiation, and to what extent there is genetic differentiation also in trait plasticity. Using a crossing design and a greenhouse heating experiment, we investigated genetic differentiation in thermal sensitivity of flowering time in a perennial herb along small-scale gradients in geothermal soil heating in Iceland. We found additive genetic variation in both flowering time and thermal plasticity of flowering time. Genetic differentiation in median flowering date of individuals showed a counter-gradient pattern; flowering being earlier at higher greenhouse temperatures, while at a given temperature individuals originating from warmer soils flowered later than individuals from colder soils. We found no corresponding pattern for plasticity, suggesting that genetic differentiation in phenology in response to soil heating has occurred through changes in trait means rather than in plasticity. Findings such as these, identifying genetic trait differentiation along an environmental gradient are key to understand how environmental variation can drive the process of local adaptation, and to predict responses to future environmental changes.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143002672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Drought tolerance as an evolutionary precursor to frost and winter tolerance in grasses. 耐旱性是禾本科植物耐霜冻和耐冬性的进化先导。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-01-18 DOI: 10.1093/evolut/qpaf006

Laura Schat, Marian Schubert, Siri Fjellheim, Aelys M Humphreys

{"title":"Drought tolerance as an evolutionary precursor to frost and winter tolerance in grasses.","authors":"Laura Schat, Marian Schubert, Siri Fjellheim, Aelys M Humphreys","doi":"10.1093/evolut/qpaf006","DOIUrl":"https://doi.org/10.1093/evolut/qpaf006","url":null,"abstract":"Accumulating evidence is suggesting more frequent tropical-to-temperate transitions than previously thought. This raises the possibility that biome transitions could be facilitated by precursor traits. A wealth of ecological, genetic and physiological evidence suggests overlap between drought and frost stress responses, but the origin of this overlap, i.e. the evolution of these responses relative to each other, is poorly known. Here, we test whether adaptation to frost and/or severe winters in grasses (Poaceae) was facilitated by ancestral adaptation to drought. We used occurrence patterns across Köppen-Geiger climate zones to classify species as drought, frost and/or winter tolerant, followed by comparative analyses. Ancestral state reconstructions revealed different evolutionary trajectories in different clades, suggesting both drought-first and frost-first scenarios. Explicit simultaneous modelling of drought and frost/winter tolerance provided some support for correlated evolution, but suggested higher rates of gain of frost/winter tolerance in drought sensitive rather than drought tolerant lineages. Overall, there is limited support across grasses as a whole that drought tolerance acted as an evolutionary precursor to frost or severe winter tolerance. Different scenarios in different clades is consistent with present-day grasses being either cold or drought specialists, possibly as a consequence of trade-offs between different stress tolerance responses.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143002664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gene pseudogenization in fertility-associated genes in cheetah (Acinonyx jubatus), a species with long-term low effective population size. 印度猎豹（Acinonyx jubatus）是一个长期低有效种群规模的物种。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-01-17 DOI: 10.1093/evolut/qpaf005

Jessica A Peers, Will J Nash, Wilfried Haerty

{"title":"Gene pseudogenization in fertility-associated genes in cheetah (Acinonyx jubatus), a species with long-term low effective population size.","authors":"Jessica A Peers, Will J Nash, Wilfried Haerty","doi":"10.1093/evolut/qpaf005","DOIUrl":"https://doi.org/10.1093/evolut/qpaf005","url":null,"abstract":"We are witnessing an ongoing global biodiversity crisis, and an increasing number of mammalian populations are at risk of decline. Species that have survived severe historic bottlenecks, such as the cheetah (Acinonyx jubatus) exhibit symptoms of inbreeding depression including reproductive and developmental defects. Although it has long been suggested that such defects stem from an accumulation of weakly deleterious mutations, the implications of such mutations leading to pseudogenization has not been assessed. Here, we use comparative analysis of eight felid genomes to better understand the impacts of deleterious mutations in the cheetah. We find novel pseudogenization events specific to the cheetah. Through careful curation, we identify 65 genes with previously unreported premature termination codons that likely affect gene function. With the addition of population data (n=6) we find 22 of these premature termination codons in at least one resequenced individual, four of which (DEFB116, ARL13A, CFAP119 and NT5DC4) are also found in a more recent reference genome. Mutations within three of these genes are linked with sterility, including azoospermia, which is common in cheetahs. Our results highlight the power of comparative genomic approaches for the discovery of novel causative variants in declining species.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143002666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predators drive selection for adaptive plasticity in prey defense behavior. 捕食者驱动选择以适应猎物防御行为的可塑性。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-01-17 DOI: 10.1093/evolut/qpaf004

Wade A Boys, Tara L Lanzer, Taylor S Ping, Adam M Siepielski

{"title":"Predators drive selection for adaptive plasticity in prey defense behavior.","authors":"Wade A Boys, Tara L Lanzer, Taylor S Ping, Adam M Siepielski","doi":"10.1093/evolut/qpaf004","DOIUrl":"https://doi.org/10.1093/evolut/qpaf004","url":null,"abstract":"Plasticity to reduce activity is a common way prey evade predators. However, by reducing activity prey often experience lower individual growth rates because they encounter their own prey less often. To overcome this cost, natural selection should not simply favor individuals generating stronger plasticity to reduce activity rates, but also selection to resume activity once the threat of predation subsides. If such plasticity is adaptive, it should vary under environmental conditions that generate stronger selection for greater plasticity, such as predator density. Using a mesocosm experiment and observational study with a damselfly-prey/fish-predator system we show that fish predation exerts selection for greater plasticity in activity rates of damselflies. Such selection allows damselfly activity levels to initially decrease and then rebound when the threat of predation dissipates, potentially helping to ameliorate a hypothesized growth penalty from activity reductions. We also find that the extent of plasticity in activity to the threat of fish predation increases, albeit slightly (r2 = 0.04-0.063%), as fish densities increase across natural lakes, consistent with the idea that the magnitude of plasticity is shaped by environmental conditions underlying selection. Collectively, these results demonstrate how selection acts to drive adaptive plasticity in a common predator avoidance strategy.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143002669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Digest: Evolution of dragline silk in araneids show super tensile performance in web-building and non-web-building spiders. 摘要：蛛形纲纲动物拖丝的进化在造网蜘蛛和不造网蜘蛛中显示出超强的拉伸性能。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-01-13 DOI: 10.1093/evolut/qpaf002

Snata Chakraborty

引用次数: 0

Can sexual conflict drive transitions to asexuality? Female resistance to fertilization in a facultatively parthenogenetic insect. 性冲突会导致向无性恋的转变吗？兼性孤雌生殖昆虫的雌性受精抗性。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-23 DOI: 10.1093/evolut/qpae187

Daniela Wilner, Jigmidmaa Boldbaatar, Soleille M Miller, Nathan W Burke, Russell Bonduriansky

{"title":"Can sexual conflict drive transitions to asexuality? Female resistance to fertilization in a facultatively parthenogenetic insect.","authors":"Daniela Wilner, Jigmidmaa Boldbaatar, Soleille M Miller, Nathan W Burke, Russell Bonduriansky","doi":"10.1093/evolut/qpae187","DOIUrl":"https://doi.org/10.1093/evolut/qpae187","url":null,"abstract":"Facultatively parthenogenetic animals could help reveal the role of sexual conflict in the evolution of sex. Although each female can reproduce both sexually (producing sons and daughters from fertilized eggs) and asexually (typically producing only daughters from unfertilized eggs), these animals often form distinct sexual and asexual populations. We hypothesized that asexual populations are maintained through female resistance as well as the decay of male traits. We tested this via experimental crosses between individuals descended from multiple natural sexual and asexual populations of the facultatively parthenogenic stick-insect Megacrania batesii. We found that male-paired females descended from asexual populations produced strongly female-biased offspring sex-ratios resulting from reduced fertilization rates. This effect was not driven by incompatibility between diverged genotypes but, rather, by both genotypic and maternal effects on fertilization rate. Furthermore, when females from asexual populations mated and produced sons, those sons had poor fertilization success when paired with resistant females, consistent with male trait decay. Our results suggest that resistance to fertilization resulting from both maternal and genotypic effects, along with male sexual trait decay, can hinder the invasion of asexual populations by males. Sexual conflict could thus play a role in the establishment and maintenance of asexual populations.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142876686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Herbivory and water availability interact to shape the adaptive landscape in the perennial forb, Boechera stricta. 草食性和水分的可用性相互作用，形成了多年生草本植物Boechera stricta的适应性景观。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-23 DOI: 10.1093/evolut/qpae186

M Inam Jameel, Lisa Duncan, Kailen Mooney, Jill T Anderson

{"title":"Herbivory and water availability interact to shape the adaptive landscape in the perennial forb, Boechera stricta.","authors":"M Inam Jameel, Lisa Duncan, Kailen Mooney, Jill T Anderson","doi":"10.1093/evolut/qpae186","DOIUrl":"https://doi.org/10.1093/evolut/qpae186","url":null,"abstract":"Abiotic and biotic factors interact to influence phenotypic evolution; however, identifying the causal agents of selection that drive the evolution and expression of traits remains challenging. In a field common garden, we manipulated water availability and herbivore abundance across three years, and evaluated clinal variation in functional traits and phenology, plasticity, local adaptation, and selection using diverse accessions of the perennial forb, Boechera stricta. Consistent with expectations, drought stress exacerbated damage from herbivores. Foliar traits exhibited greater plasticity than phenological traits, which displayed more consistent genetic clines. Water availability and herbivory interacted to exert selection, even on traits like flowering duration, which showed no clinal variation and limited plasticity. Furthermore, the direction of selection on specific leaf area in response to water availability mirrored the genetic cline and plasticity, suggesting that variation in water levels across the landscape influences the evolution of this trait. Finally, both herbivory and water availability likely contribute to local adaptation. This work emphasizes the additive and synergistic roles of abiotic and biotic factors in shaping phenotypic variation across environmental gradients.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142876689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0