Genetic changes in flowering and morphology in response to adaptation to a high-latitude environment in Arabidopsis lyrata

Quilot-Turion, Bènèdicte; Leppälä, Johanna; Leinonen, Päivi H.; Waldmann, Patrik; Savolainen, Outi; Kuittinen, Helmi

doi:10.1093/aob/mct055

Cited by 23 publications

(33 citation statements)

References 65 publications

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“…To distinguish between the F 2 reciprocal progenies, they are referred to as SpPl2F 2 and SpPl3F 2 . The growth conditions of the F 2 are described in Quilot-Turion et al (2013).…”

Section: Crossesmentioning

confidence: 99%

Investigating Incipient Speciation in Arabidopsis lyrata from Patterns of Transmission Ratio Distortion

2013

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Our understanding of the development of intrinsic reproductive isolation is still largely based on theoretical models and thorough empirical studies on a small number of species. Theory suggests that reproductive isolation develops through accumulation of epistatic genic incompatibilities, also known as Bateson-Dobzhansky-Muller (BDM) incompatibilities. We can detect these from marker transmission ratio distortion (TRD) in hybrid progenies of crosses between species or populations, where TRD is expected to result from selection against heterospecific allele combinations in hybrids. TRD may also manifest itself because of intragenomic conflicts or competition between gametes or zygotes. We studied early stage speciation in Arabidopsis lyrata by investigating patterns of TRD across the genome in F 2 progenies of three reciprocal crosses between four natural populations. We found that the degree of TRD increases with genetic distance between crossed populations, but also that reciprocal progenies may differ substantially in their degree of TRD. Chromosomes AL6 and especially AL1 appear to be involved in many single-and two-locus distortions, but the location and source of TRD vary between crosses and between reciprocal progenies. We also found that the majority of single-and two-locus TRD appears to have a gametic, as opposed to zygotic, origin. Thus, while theory on BDM incompatibilities is typically illustrated with derived nuclear alleles proving incompatible in hybrid zygotes, our results suggest a prominent role for distortions emerging before zygote formation. C OMPLETE reproductive isolation between natural populations is usually achieved through several reproductive barriers, acting at different developmental stages. In plants prezygotic reproductive isolation acts either prepollination (e.g., habitat, temporal, or pollinator isolation) or postpollination (e.g., unilateral incompatibility or conspecific pollen precedence). Postzygotic isolating mechanisms either reduce viability, fertility, or fitness of hybrids or prevent development of a hybrid altogether. The effect of postzygotic reproductive barriers may be environment dependent (e.g., Hatfield and Schluter 1999) or independent of the environment. The latter, intrinsic postzygotic barriers, cause reduced viability or fertility of hybrids and have been studied extensively, e.g., in Drosophila (for a review see Coyne and Orr 2004;Presgraves 2010).Despite the importance of development of reproductive isolation as an evolutionary process, and despite considerable study, precise molecular genetic mechanisms of postzygotic isolation have rarely been described (Presgraves 2010;Rieseberg and Blackman 2010). It is generally assumed, however, that intrinsic postzygotic isolation is due to Bateson-Dobzhansky-Muller incompatibilities (BDMI;Orr 1995;Orr and Turelli 2001). These incompatibilities emerge when in (usually) isolated populations new alleles arise, which upon secondary contact do not function together. In a few cases single genes involved in BD...

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“…To distinguish between the F 2 reciprocal progenies, they are referred to as SpPl2F 2 and SpPl3F 2 . The growth conditions of the F 2 are described in Quilot-Turion et al (2013).…”

Section: Crossesmentioning

confidence: 99%

Investigating Incipient Speciation in Arabidopsis lyrata from Patterns of Transmission Ratio Distortion

2013

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“…; Quilot‐Turion et al . ). This will likely influence the interactions of plants with their pollinators and seed herbivores (Elzinga et al .…”

Section: Introductionmentioning

confidence: 97%

Genetic differentiation and regional adaptation among seed origins used for grassland restoration: lessons from a multispecies transplant experiment

Bucharová

Michalski

Hermann

et al. 2016

Journal of Applied Ecology

111

119

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1. One of the key questions in ecosystem restoration is the choice of seed material for restoring plant communities. More and more scientists and practitioners are currently advocating the use of regional seed sources, based on the argument that plants are often adapted to local or regional environmental conditions, and thus, regional seed sources should provide the best restoration success. However, there is still substantial debate about this approach, partly because of a lack of solid empirical data. 2. We conducted a multispecies transplant experiment in which we compared the performance of eight seed origins of seven plant species frequently used in grassland restoration in four common gardens across Germany. 3. We found that, on average, plants of regional origins produced 10% more inflorescences and 7% more biomass than those of foreign origins. There were substantial differences among species in the strength of these effects, but in the majority of the study species fitness decreased with increasing geographical distance of seed origins or with increasing climatic differences between plant origins and experimental sites. 4. In addition to these effects on plant fitness, increasing geographical or climatic distances of origin were often also correlated with increasing differences in plant phenology. Since phenology is important for biotic interactions, especially with pollinators and seed predators, using foreign seed sources may have cascading effects on local ecosystems. 5. Synthesis and applications. Genetic differentiation is widespread in grassland species and often shows the patterns of regional adaptation. Our study thus supports the use of regional seed sources in restoration. Moreover, using non-regional seed sources in grassland restoration may not only decrease the performance of plants, but it will likely also affect their biotic interactions.

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“…In this context, few studies have evaluated the relationships between genetic differentiation and phenotypic plasticity of invasive plant species to novel, changing environments along wide latitudinal ranges. These studies have shown that species with low genetic variation can colonize wide latitudinal ranges due to high plasticity levels, sometimes related to polyploidy and hybridization, and their spread into dissimilar environments can lead to genetic differentiation (Counts, ; De Kort et al., ; Meyerson et al., ; Quilot‐Turion et al., ; Zhao, Yang, Xi, Gao, & Sun, ). For example, the high level of epigenetic changes recorded in invasive Spartina anglica (Parisod et al., ; Salmon, Ainouche, & Wendel, ) has been related to its high levels of morphological plasticity and its large ecological amplitude (Thompson, McNeilly, & Gay, ), contrasting with low interindividual genetic diversity (Ainouche, Baumel, & Salmon, ; Ayres & Strong, ; Baumel, Ainouche, & Levasseur, ).…”

Section: Introductionmentioning

confidence: 99%

Low genetic diversity contrasts with high phenotypic variability in heptaploid Spartina densiflora populations invading the Pacific coast of North America

Castillo

Gallego‐Tévar

Figueroa

et al. 2018

Ecology and Evolution

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Species can respond to environmental pressures through genetic and epigenetic changes and through phenotypic plasticity, but few studies have evaluated the relationships between genetic differentiation and phenotypic plasticity of plant species along changing environmental conditions throughout wide latitudinal ranges. We studied inter‐ and intrapopulation genetic diversity (using simple sequence repeats and chloroplast DNA sequencing) and inter‐ and intrapopulation phenotypic variability of 33 plant traits (using field and common‐garden measurements) for five populations of the invasive cordgrass Spartina densiflora Brongn. along the Pacific coast of North America from San Francisco Bay to Vancouver Island. Studied populations showed very low genetic diversity, high levels of phenotypic variability when growing in contrasted environments and high intrapopulation phenotypic variability for many plant traits. This intrapopulation phenotypic variability was especially high, irrespective of environmental conditions, for those traits showing also high phenotypic plasticity. Within‐population variation represented 84% of the total genetic variation coinciding with certain individual plants keeping consistent responses for three plant traits (chlorophyll b and carotenoid contents, and dead shoot biomass) in the field and in common‐garden conditions. These populations have most likely undergone genetic bottleneck since their introduction from South America; multiple introductions are unknown but possible as the population from Vancouver Island was the most recent and one of the most genetically diverse. S. densiflora appears as a species that would not be very affected itself by climate change and sea‐level rise as it can disperse, establish, and acclimate to contrasted environments along wide latitudinal ranges.

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Genetic changes in flowering and morphology in response to adaptation to a high-latitude environment in Arabidopsis lyrata

Abstract: The results indicate that many potentially adaptive genetic changes have occurred during colonization; the two populations have diverged in their plastic responses to vernalization in traits closely connected to fitness through changes in many genomic areas.

Cited by 23 publications

References 65 publications

Investigating Incipient Speciation in Arabidopsis lyrata from Patterns of Transmission Ratio Distortion

Investigating Incipient Speciation in Arabidopsis lyrata from Patterns of Transmission Ratio Distortion

Genetic differentiation and regional adaptation among seed origins used for grassland restoration: lessons from a multispecies transplant experiment

Low genetic diversity contrasts with high phenotypic variability in heptaploid Spartina densiflora populations invading the Pacific coast of North America

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