An explicit test for the contribution of environmental maternal effects to rapid clinal differentiation in an invasive plant

Monty, Arnaud; LeBeau, Jennifer K.; Meerts, Pierre Jacques; Mahy, Grégory

doi:10.1111/j.1420-9101.2009.01728.x

Cited by 27 publications

(25 citation statements)

References 64 publications

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“…This method resembles a common garden experiment in which all individuals are fostered into the same location in order to apportion genetic and environmental effects on the phenotype4142. Our proposed “common options” experiment is designed to additionally provide all individuals with the identical set of opportunities to disperse to any location.…”

Section: Methodsmentioning

confidence: 99%

Avoiding pitfalls in estimating heritability with the common options approach

Danchin

Wajnberg²,

Wagner

2014

Sci Rep

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In many circumstances, heritability estimates are subject to two potentially interacting pitfalls: the spatial and the regression to the mean (RTM) fallacies. The spatial fallacy occurs when the set of potential movement options differs among individuals according to where individuals depart. The RTM fallacy occurs when extreme measurements are followed by measurements that are closer to the mean. We simulated data from the largest published heritability study of a behavioural trait, colony size choice, to examine the operation of the two fallacies. We found that spurious heritabilities are generated under a wide range of conditions both in experimental and correlative estimates of heritability. Classically designed cross-foster experiments can actually increase the frequency of spurious heritabilities. Simulations showed that experiments providing all individuals with the identical set of options, such as by fostering all offspring in the same breeding location, are immune to the two pitfalls.

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Section: Methodsmentioning

confidence: 99%

Avoiding pitfalls in estimating heritability with the common options approach

Danchin

Wajnberg²,

Wagner

2014

Sci Rep

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“…There are few such studies in long-lived forest trees, but an example include the demonstration of "seed after-effects" whereby the environment experienced by parents and developing seeds in a tree seed orchard may affect the expression of phenotypic variation in the subsequent deployment population (Andersson 1994;Stoehr et al 1998). Few studies allow the separation of maternal embryonic nuclear and maternal effects (Rasanen and Kruuk 2007;Monty et al 2009;Bischoff and Muller-Scharer 2010), particularly in the case of forest trees (Besnard et al 2008). This is partly because many studies confound genetic effects with maternal environment, by not having replicated maternal genotypes growing in common environment trials (Rasanen and Kruuk 2007;Monty et al 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Few studies allow the separation of maternal embryonic nuclear and maternal effects (Rasanen and Kruuk 2007;Monty et al 2009;Bischoff and Muller-Scharer 2010), particularly in the case of forest trees (Besnard et al 2008). This is partly because many studies confound genetic effects with maternal environment, by not having replicated maternal genotypes growing in common environment trials (Rasanen and Kruuk 2007;Monty et al 2009). The present study focuses on the role that maternal genotype plays in the seed germination responses of the Australian forest tree, Eucalyptus globulus Labill.…”

Section: Introductionmentioning

confidence: 99%

Genetic control of Eucalyptus globulus seed germination

Rix

Gracie

Potts

et al. 2015

Annals of Forest Science

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Abstract& Key message The maternal genotype has a significant effect on most germination traits of Eucalyptus globulus seeds. These differences can be partly explained by genetic-based differences amongst races, including differences in sensitivity to high temperatures which may be of adaptive significance. & Context Slow and uneven germination of Eucalyptus globulus seeds in commercial nurseries can be a problem which has been linked with periods of high temperature. & Aims This study aimed to determine whether maternal genotype affects the germination of E. globulus seeds.& Methods By sampling seeds over two seasons from multiple randomised ramets (trees) of maternal genotypes from three races of E. globulus growing in a seed orchard, the extent of genetic control of seed germination responses was assessed at different germination temperatures. & Results Maternal genotype had a significant effect on most germination traits but a differential response to temperature was more evident for germination proportion than rate traits. Maternal races differed in their rate of seedling development regardless of temperature, but differences in the germination proportion were only detected at high temperatures. & Conclusion The present study highlights the potential adaptive significance of the germination response and the need for seed lot-specific germination testing as both genetics and maternal environment vary.

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“…These different sources of phenotypic variation, associated with climate, have been studied in invasive plant species [2], [10], [22], [23]. However, to our knowledge, studies have not been attempted to simultaneously assess LA, GD, PP and EME in response to climate in a quantitative framework.…”

Section: Introductionmentioning

confidence: 99%

Rapid Plant Invasion in Distinct Climates Involves Different Sources of Phenotypic Variation

et al. 2013

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When exotic species spread over novel environments, their phenotype will depend on a combination of different processes, including phenotypic plasticity (PP), local adaptation (LA), environmental maternal effects (EME) and genetic drift (GD). Few attempts have been made to simultaneously address the importance of those processes in plant invasion. The present study uses the well-documented invasion history of Senecio inaequidens (Asteraceae) in southern France, where it was introduced at a single wool-processing site. It gradually invaded the Mediterranean coast and the Pyrenean Mountains, which have noticeably different climates. We used seeds from Pyrenean and Mediterranean populations, as well as populations from the first introduction area, to explore the phenotypic variation related to climatic variation. A reciprocal sowing experiment was performed with gardens under Mediterranean and Pyrenean climates. We analyzed climatic phenotypic variation in germination, growth, reproduction, leaf physiology and survival. Genetic structure in the studied invasion area was characterized using AFLP. We found consistent genetic differentiation in growth traits but no home-site advantage, so weak support for LA to climate. In contrast, genetic differentiation showed a relationship with colonization history. PP in response to climate was observed for most traits, and it played an important role in leaf trait variation. EME mediated by seed mass influenced all but leaf traits in a Pyrenean climate. Heavier, earlier-germinating seeds produced larger individuals that produced more flower heads throughout the growing season. However, in the Mediterranean garden, seed mass only influenced the germination rate. The results show that phenotypic variation in response to climate depends on various ecological and evolutionary processes associated with geographical zone and life history traits. Seeing the relative importance of EME and GD, we argue that a “local adaptation vs. phenotypic plasticity” approach is therefore not sufficient to fully understand what shapes phenotypic variation and genetic architecture of invasive populations.

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An explicit test for the contribution of environmental maternal effects to rapid clinal differentiation in an invasive plant

Cited by 27 publications

References 64 publications

Avoiding pitfalls in estimating heritability with the common options approach

Avoiding pitfalls in estimating heritability with the common options approach

Genetic control of Eucalyptus globulus seed germination

Rapid Plant Invasion in Distinct Climates Involves Different Sources of Phenotypic Variation

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