Adaptive genetic variation in the smoke tree (Cotinus coggygria Scop.) is driven by precipitation

Lei, Yakai; Wang, Wei; Liu, Yiping; He, Dan; Li, Yong

doi:10.1016/j.bse.2015.01.009

Cited by 11 publications

(11 citation statements)

References 28 publications

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“…The species can propagate through root suckers to occupy the territory rapidly, and it can tolerate extremely poor soils with rapid reproduction and vigorous growth [39]. Cotinus coggygria is widely distributed in the warmtemperate zone of China by local adaptation [40], and it tends to be a small tree or a shrub [41,42]. Both the species are regarded as ornamental plants, and they are known for their red autumnal leaves [39,42].…”

Section: Introductionmentioning

confidence: 99%

Increased soil moisture aggravated the competitive effects of the invasive tree Rhus typhina on the native tree Cotinus coggygria

Guo

et al. 2020

BMC Ecol

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Background: Invasive exotic species have caused significant problems, and the effects of extreme precipitation and drought, which might occur more frequently under the global climate change scenarios, on interspecific relationship between invasive and native species remain unclear. Results: We conducted a greenhouse experiment with three soil water levels (30-40%, 50-60%, and 70-80% of field capacity) and two cultivation treatments (monoculture pots, one seedling of either species and mixture pots, one seedling of each species) to investigate soil water content effects on the relationship between invasive Rhus typhina and native Cotinus coggygria. Rhus typhina had lower height but bigger crown area than C. coggygria in the monoculture treatment. Rhus typhina had higher height, bigger crown area and total biomass than C. coggygria in the mixture treatment. Drought decreased the growth parameters, total chlorophyll concentration, and leaf biomass, but did not change gas exchange and other biomass parameters in R. typhina. The growth parameters, leaf area index, biomass parameters, total chlorophyll concentration, and net photosynthetic rate of C. coggygria decreased under drought conditions. The log response ratio (lnRR), calculated as ln (total biomass of a target plant grown in monoculture/total biomass of a target plant grown in mixed culture), of R. typhina was lower than that of C. coggygria. The lnRR of R. typhina and C. coggygria decreased and increased with increase in soil water content, respectively. Conclusions: Rhus typhina has greater capacity to relatively stable growth to the drought condition than C. coggygria and has strong competition advantages in the mixture with C. coggygria, especially in the drought condition. Our study will help understand the causes of invasiveness and wide distribution of R. typhina under various moisture conditions and predict its expansion under climate change scenarios.

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Section: Introductionmentioning

confidence: 99%

Increased soil moisture aggravated the competitive effects of the invasive tree Rhus typhina on the native tree Cotinus coggygria

Guo

et al. 2020

BMC Ecol

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“…Two adaptation strategies are usually adopted by plants in response to environmental variables. One strategy is adjustment in the distribution, and the other is production of adaptive variations in the genome (Davis and Shaw, 2001; Lei et al, 2015). Plants displaying highly efficient seed dispersal capacity often adopt the first strategy as confirmed by phylogeographical studies (Avise, 2009; Hickerson et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Landscape Population Genomics of Forsythia (Forsythia suspensa) Reveal That Ecological Habitats Determine the Adaptive Evolution of Species

et al. 2017

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Understanding the genetic mechanisms of adaptation to environmental variables is a key concern in molecular ecology and evolutionary biology. Determining the adaptive evolutionary direction and evaluating the adaptation status of species can improve our understanding of these mechanisms. In this study, we sampled 20 populations of Forsythia suspensa to infer the relationship between environmental variables and adaptive genetic variations. Population structure analysis revealed that four genetic groups of F. suspensa exist resulting from divergent selection driven by seven environmental variables. A total of 26 outlier loci were identified by both BayeScan and FDIST2, 23 of which were environment-associated loci (EAL). Environmental association analysis revealed that the environmental variables related to the ecological habitats of F. suspensa are associated with high numbers of EAL. Results of EAL characterization in F. suspensa are consistent with the hypothesis that ecological habitats determine the adaptive evolution of this species. Moreover, a model of species adaptation to environmental variables was proposed in this study. The adaptation model was used to further evaluate the adaptation status of F. suspensa to environmental variables. This study will be useful to help us in understanding the adaptive evolution of species in regions lacking strong selection pressure.

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“…As a consequence, only a few studies could detect outlier loci in non-model plant species. In Campanula (Jones et al 2013) and Cotinus (Lei et al 2015), these outlier loci are clearly associated with precipitation, while Manel et al (2012) in alpine plant species, Gray et al (2014) in Andropogon, and Hübner et al (2009) in Hordeum showed that precipitations in combination with temperature were the best environmental predictors.…”

Section: Introductionmentioning

confidence: 93%

Geropogon hybridus (L.) Sch.Bip. (Asteraceae) exhibits micro-geographic genetic divergence at ecological range limits along a steep precipitation gradient

et al. 2016

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We analyzed the population genetic pattern of 12 fragmented Geropogon hybridus ecological range edge populations in Israel along a steep precipitation gradient. In the investigation area (45 9 20 km 2), the annual mean precipitation changes rapidly from 450 mm in the north (Mediterranean-influenced climate zone) to 300 mm in the south (semiarid climate zone) without significant temperature changes. Our analysis (91 individuals, 12 populations, 123 polymorphic loci) revealed strongly structured populations (AMOVA U ST = 0.35; P \ 0.001); however, differentiation did not change gradually toward range edge. IBD was significant (Mantel test r = 0.81; P = 0.001) and derived from sharply divided groups between the northernmost populations and the others further south, due to dispersal or environmental limitations. This was corroborated by the PCA and STRUCTURE analyses. IBD and IBE were significant despite the micro-geographic scale of the study area, which indicates that reduced precipitation toward range edge leads to population genetic divergence. However, this pattern diminished when the hypothesized gene flow barrier was taken into account. Applying the spatial analysis method revealed 11 outlier loci that were correlated to annual precipitation and, moreover, were indicative for putative precipitation-related adaptation (BAYESCAN, MCHEZA). The results suggest that even on micro-geographic scales, environmental factors play prominent roles in population divergence, genetic drift, and directional selection. The pattern is typical for strong environmental gradients, e.g., at species range edges and ecological limits, and if gene flow barriers and mosaic-like structures of fragmented habitats hamper dispersal. Keywords Environmental association studies Á Fragmented habitats Á Isolation by distance (IBD) Á Isolation by environment (IBE) Á Range edge populations Handling editor: Christoph Oberprieler.

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Adaptive genetic variation in the smoke tree (Cotinus coggygria Scop.) is driven by precipitation

Cited by 11 publications

References 28 publications

Increased soil moisture aggravated the competitive effects of the invasive tree Rhus typhina on the native tree Cotinus coggygria

Increased soil moisture aggravated the competitive effects of the invasive tree Rhus typhina on the native tree Cotinus coggygria

Landscape Population Genomics of Forsythia (Forsythia suspensa) Reveal That Ecological Habitats Determine the Adaptive Evolution of Species

Geropogon hybridus (L.) Sch.Bip. (Asteraceae) exhibits micro-geographic genetic divergence at ecological range limits along a steep precipitation gradient

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