Tests of alternative evolutionary models are needed to enhance our understanding of biological invasions

Burns, Jean H.; Murphy, Jennifer E.; Zheng, Yulong

doi:10.1111/nph.15584

Cited by 7 publications

(8 citation statements)

References 47 publications

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“…These requirements make it unlikely that the phylogenetic relationships among species are, alone, representative of the similarities and differences required for invasion. As such, DNC lacks the nuance and complexity to further advance our understanding of the mechanisms driving invasion, and further testing should be restricted to studies exploring the relationship between evolution and invasion (Burns et al, ; Cadotte et al., ).. To advance our understanding of invasion, I advocate for the use of multi‐trait regression models that allow for the testing of how similarity in individual traits affects invasion success at multiple scales (Bennett & Pärtel, ; Carboni et al., ). Such models show promise, but require extensive trait data and are currently limited to the use of average values for a small number of traits.…”

Section: Discussionmentioning

confidence: 99%

Similarities between invaders and native species: Moving past Darwin's naturalization conundrum

Bennett

2019

J Vegetation Science

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Darwin's naturalization conundrum states that successful invaders must be closely related to native species to possess the traits to tolerate that environment, but distantly related enough to possess traits allowing exploitation of underutilized niches, thereby minimizing competition. Although influential, this hypothesis is based on several simplistic assumptions. In particular, the relationship among phylogenetic relatedness, similarity, and competition is more complex than assumed and changes with spatial and phylogenetic scale. Competitive interactions are determined by limiting similarity and trait hierarchies associated with separate traits. Successful invaders thus need to be similar to native species in some respects, but different in others. This combination of similarities and differences is unlikely to be conserved. Further, many invasive species are represented in their novel range by genotypes with extreme trait values or plasticity relative to the species mean. Selection for these genotypes may alter the similarity between invasive and native species, thus obscuring the relationship between competition and phylogenetic relatedness. As environmental filtering and competition often act on different spatial scales, approaches assessing how individual traits relate to invasion at these scales (species pools vs local community) may improve our understanding of the relationship between similarity and invasion.

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Section: Discussionmentioning

confidence: 99%

Similarities between invaders and native species: Moving past Darwin's naturalization conundrum

Bennett

2019

J Vegetation Science

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“…Biological invasions represent major threats to biodiversity as invasive species can replace native species. Evolutionary and ecological studies are of major importance for understanding the patterns and causes of biological invasions, and plant and animal invasions have been extensively studied since the 19th century (Burns et al, 2018;Cadotte et al, 2018;MacDougall et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola

et al. 2020

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Invasive pathogens can be a threat when they affect human health, food production or ecosystem services, by displacing resident species, and we need to understand the cause of their establishment. We studied the patterns and causes of the establishment of the pathogen Dickeya solani that recently invaded potato agrosystems in Europe by assessing its invasion dynamics and its competitive ability against the closely related resident D. dianthicola species. Epidemiological records over one decade in France revealed the establishment of D. solani and the maintenance of the resident D. dianthicola in potato fields exhibiting blackleg symptoms. Using experimentations, we showed that D. dianthicola caused a higher symptom incidence on aerial parts of potato plants than D. solani, while D. solani was more aggressive on tubers (i.e. with more severe symptoms). In co-infection assays, D. dianthicola outcompeted D. solani in aerial parts, while the two species co-existed in tubers. A comparison of 76 D. solani genomes (56 of which have been sequenced here) revealed balanced frequencies of two previously uncharacterized alleles, VfmB Pro and VfmB Ser , at the vfmB virulence gene. Experimental inoculations showed that the VfmB Ser population was more aggressive on tubers, while the VfmB Pro population outcompeted the VfmB Ser population in stem lesions, suggesting an important role of the vfmB virulence gene in the ecology of the pathogens. This study thus brings novel insights allowing a better understanding of the pattern and causes of the D.solani invasion into potato production agrosystems, and the reasons why the endemic D. dianthicola nevertheless persisted.

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“…Furthermore, any model that asks only how plants should converge to maximize adaptation to external conditions will be blind to the advantages of divergence from the dominant competitors in any particular environment. Phylogenetic and/or ecological divergence from natives as an important factor driving success of introduced species has been argued and supported by many, including Darwin (1859), Strauss et al (2006), Diez et al (2008), van Kleunen et al (2010), Park and Potter (2013), and Burns et al, 2019a, b). The tension between divergence (in traits and/or phylogenetic relationships) to minimize competition and convergence to maximize growth in the absence of competition in a particular environment is one that ecologists and evolutionary biologists have yet to resolve (e.g., Cavender‐Bares et al, 2004a, b; Cavender‐Bares et al, 2018; Strauss et al, 2006; Cadotte et al, 2009; Evans et al 2009; Cleland et al, 2011; Weber et al, 2018; Bernard‐Verdier et al, 2012; Givnish et al, 2014; Cavender‐Bares, 2019; Chang and HilleRisLambers, 2019), and involves a dynamic that potentially ensures phenotypic diversity in any guild or community.…”

Section: Discussionmentioning

confidence: 99%

“…The strong statistical support for most of our hypotheses, and their generality across the Wisconsin angiosperm flora, illustrates the power of big data (Allen et al, 2019) for addressing broad ecological and evolutionary questions—here involving phylogenetics, traits, and coarse habitat distributions scored across native and introduced angiosperms in Wisconsin. Increasingly, big data and thoughtful analyses are being used to assess many ecological and evolutionary issues at regional and global scales in a phylogenetic framework, yielding insights of unprecedented geographic and phylogenetic scope (e.g., Ordonez et al, 2010; Du et al, 2015; Givnish et al, 2015, 2016; Thornhill et al, 2016; Baldwin et al, 2017; Razanojatova et al, 2017; Scherson et al, 2017; Seebens et al, 2017; Bruelheide et al, 2018; Moser et al, 2018; Burns et al, 2019a, b). The novel contributions contributed by this study are summarized below.…”

Section: Discussionmentioning

confidence: 99%

Adaptive associations among life history, reproductive traits, environment, and origin in the Wisconsin angiosperm flora

Givnish

Kriebel

Zaborsky

et al. 2020

American J of Botany

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Premise We tested 25 classic and novel hypotheses regarding trait–origin, trait–trait, and trait–environment relationships to account for flora‐wide variation in life history, habit, and especially reproductive traits using a plastid DNA phylogeny of most native (96.6%, or 1494/1547 species) and introduced (87.5%, or 690/789 species) angiosperms in Wisconsin, USA. Methods We assembled data on life history, habit, flowering, dispersal, mating system, and occurrence across open/closed/mixed habitats across species in the state phylogeny. We used phylogenetically structured analyses to assess the strength and statistical significance of associations predicted by our models. Results Introduced species are more likely to be annual herbs, occupy open habitats, have large, visually conspicuous, hermaphroditic flowers, and bear passively dispersed seeds. Among native species, hermaphroditism is associated with larger, more conspicuous flowers; monoecy is associated with small, inconspicuous flowers and passive seed dispersal; and dioecy is associated with small, inconspicuous flowers and fleshy fruits. Larger flowers with more conspicuous colors are more common in open habitats, and in understory species flowering under open (spring) canopies; fleshy fruits are more common in closed habitats. Wind pollination may help favor dioecy in open habitats. Conclusions These findings support predictions regarding how breeding systems depend on flower size, flower color, and fruit type, and how those traits depend on habitat. This study is the first to combine flora‐wide phylogenies with complete trait databases and phylogenetically structured analyses to provide powerful tests of evolutionary hypotheses about reproductive traits and their variation with geographic source, each other, and environmental conditions.

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Tests of alternative evolutionary models are needed to enhance our understanding of biological invasions

Cited by 7 publications

References 47 publications

Similarities between invaders and native species: Moving past Darwin's naturalization conundrum

Similarities between invaders and native species: Moving past Darwin's naturalization conundrum

Pattern and causes of the establishment of the invasive bacterial potato pathogen Dickeya solani and of the maintenance of the resident pathogen D. dianthicola

Adaptive associations among life history, reproductive traits, environment, and origin in the Wisconsin angiosperm flora

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