Plants capable of selfing are more likely to become naturalized

Razanajatovo, Mialy Harindra; Maurel, Noëlie; Dawson, Wayne; Essl, Franz; Kreft, Holger; Pergl, Jan; Pyšek, Petr; Weigelt, Patrick; Winter, Marten; Kleunen, Mark van

doi:10.1038/ncomms13313

Cited by 100 publications

(121 citation statements)

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“…In contrast, multiple introductions of alien species have been shown to have alleviated mate limitation during establishment (Dlugosch & Parker, ; Pannell et al, ). In line with these case studies and the previous finding that species with selfing ability were more likely to become naturalized (Razanajatovo et al, ), our results also suggest that selfing ability might benefit the establishment of alien species on islands.…”

Section: Discussionsupporting

confidence: 92%

Autofertility and self‐compatibility moderately benefit island colonization of plants

Razanajatovo

Kleunen

Kreft

et al. 2018

Global Ecol Biogeogr

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Aim The current geographical distribution of species largely reflects colonization success after natural long‐distance dispersal or introduction by humans. Plants with selfing ability should have an advantage when establishing on islands where mates and pollinators are limited (Baker’s law). However, high percentages of dioecious and self‐incompatible species have been reported for some islands, possibly resulting from post‐colonization evolution. Given that such evolution is less likely to apply to alien species recently introduced to islands by humans, tests of Baker’s law on islands need to consider both native and naturalized alien species. Location Global. Time period Undefined. Major taxa studied Angiosperms. Methods To test whether the colonization of islands is associated with selfing ability (self‐compatibility and autofertility), we combined three comprehensive global databases: one on breeding systems of species, one on island and mainland distributions of native species and one on global naturalization of alien plants. We assigned each of a total of 1,752 species, from 161 angiosperm families, as mainland species, island colonists and/or island endemics (i.e., species that are restricted to islands). To assess potential relationships between island occurrence and selfing ability of species, we used multinomial logistic regressions. Results We found that species with high selfing ability were slightly more likely to be island colonist than mainland species. However, selfing ability did not increase the likelihood of being an island endemic in contrast to mainland species. Among island colonists, selfing ability did not differ between species on oceanic and on continental islands or between species native to islands and naturalized on islands. Main conclusions We performed a comprehensive test of Baker’s law by considering many angiosperm families, using continuous metrics of self‐compatibility and autofertility and including both native and naturalized species. We provide global evidence that high selfing ability may foster island colonization of angiosperms.

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Section: Discussionsupporting

confidence: 92%

Autofertility and self‐compatibility moderately benefit island colonization of plants

Razanajatovo

Kleunen

Kreft

et al. 2018

Global Ecol Biogeogr

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“…Furthermore, we provide the first evidence, although tentative, that above‐ground interactions among kin may shift from competition towards facilitation following introduction, probably due to the higher frequency of interactions among kin in introduced genotypes than in native genotypes. Because of the prevalence of uniparental reproduction, or even shifts to uniparental reproduction, in alien plant species (Razanajatovo et al, ; Zhang, Zhang, & Barrett, ), and losses of genetic diversity following introduction, kin selection might be common in invasive plants. Finally, as Modern Coexistence Theory claims that an important mechanism for species coexistence is that species are more limited by themselves than by other species (stabilizing niche difference sensu Chesson, ), evolution of increased competitive responses to intraspecific competition and kin selection is likely to allow invasive plants to be released from intraspecific competition and then to outcompete native species.…”

Section: Resultsmentioning

confidence: 99%

Evolution of increased intraspecific competitive ability following introduction: The importance of relatedness among genotypes

et al. 2018

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A long‐standing explanation for invasion success is that invasive plants could evolve to be more competitive following introduction. This evolution of increased competitive ability (EICA) hypothesis, however, has seldom been tested with regard to intraspecific competition. Given that plants can display different responses to related and unrelated conspecifics, the evolution of intraspecific competitive ability might be specific to genotypes of different relatedness. Here, we grew five native (South American) and five introduced (North American) genotypes of the clonal herbaceous invasive plant Alternanthera philoxeroides alone, with above‐ground competition from kin (the same genotype) or from one of two types of strangers (another genotype from the same range or another genotype from the other range). When grown alone, introduced and native genotypes produced similar total biomass and storage‐root biomass. However, in response to intraspecific competition, introduced genotypes showed increases in total biomass and stem length, and a decrease in specific stem length, whereas native genotypes showed the opposite pattern. When grown with kin instead of strangers, introduced genotypes showed an increase in branch number, whereas native genotypes showed the opposite. Synthesis. Our study provided evidence for evolution of increased intraspecific competitive ability in an invasive plant. We also found, for the first time, that the interactions among kin were likely to shift from competition towards facilitation following introduction.

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“…GloNAF has also been used to demonstrate that niche dynamics of alien species do not differ between sexual and apomictic flowering plants (Dellinger et al 2016). Razanajatovo et al (2016) used GloNAF and found that selfing ability drives global naturalization of alien plants directly as well as indirectly owing to correlations with monocarpy and a large native range size, which both promote naturalization success.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, it has been used to test some of the central hypotheses in invasion biology by relating naturalized species distributions to species traits (Dellinger et al 2016, Razanajatovo et al 2016), and to model the risks of future invasions . Among the main findings so far are that climate change will increase the naturalization risk from alien garden plants in Europe , and that emerging economies in megadiverse countries are regions most vulnerable to future plant invasions because of the interaction of global trade and climate change .…”

Section: Introductionmentioning

confidence: 99%

Naturalized alien flora of the world

Pyšek¹,

Pergl²,

Essl³

et al. 2017

Preslia

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207

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(2017): Naturalized alien flora of the world: species diversity, taxonomic and phylogenetic patterns, geographic distribution and global hotspots of plant invasion. Using the recently built Global Naturalized Alien Flora (GloNAF) database, containing data on the distribution of naturalized alien plants in 483 mainland and 361 island regions of the world, we describe patterns in diversity and geographic distribution of naturalized and invasive plant species, taxonomic, phylogenetic and life-history structure of the global naturalized flora as well 204 Preslia 89: 203-274, 2017 as levels of naturalization and their determinants. The mainland regions with the highest numbers of naturalized aliens are some Australian states (with New South Wales being the richest on this continent) and several North American regions (of which California with 1753 naturalized plant species represents the world's richest region in terms of naturalized alien vascular plants). England, Japan, New Zealand and the Hawaiian archipelago harbour most naturalized plants among islands or island groups. These regions also form the main hotspots of the regional levels of naturalization, measured as the percentage of naturalized aliens in the total flora of the region. Such hotspots of relative naturalized species richness appear on both the western and eastern coasts of North America, in north-western Europe, South Africa, south-eastern Australia, New Zealand, and India. High levels of island invasions by naturalized plants are concentrated in the Pacific, but also occur on individual islands across all oceans. The numbers of naturalized species are closely correlated with those of native species, with a stronger correlation and steeper increase for islands than mainland regions, indicating a greater vulnerability of islands to invasion by species that become successfully naturalized. South Africa, India, California, Cuba, Florida, Queensland and Japan have the highest numbers of invasive species. Regions in temperate and tropical zonobiomes harbour in total 9036 and 6774 naturalized species, respectively, followed by 3280 species naturalized in the Mediterranean zonobiome, 3057 in the subtropical zonobiome and 321 in the Arctic. The New World is richer in naturalized alien plants, with 9905 species compared to 7923 recorded in the Old World. While isolation is the key factor driving the level of naturalization on islands, zonobiomes differing in climatic regimes, and socioeconomy represented by per capita GDP, are central for mainland regions. The 11 most widely distributed species each occur in regions covering about one third of the globe or more in terms of the number of regions where they are naturalized and at least 35% of the Earth's land surface in terms of those regions' areas, with the most widely distributed species Sonchus oleraceus occuring in 48% of the regions that cover 42% of the world area. Other widely distributed species are Ricinus communis, Oxalis corniculata, Portulaca oleracea, Eleusine indica, Chenopodium album, Cap...

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Plants capable of selfing are more likely to become naturalized

Cited by 100 publications

References 70 publications

Autofertility and self‐compatibility moderately benefit island colonization of plants

Autofertility and self‐compatibility moderately benefit island colonization of plants

Evolution of increased intraspecific competitive ability following introduction: The importance of relatedness among genotypes

Naturalized alien flora of the world

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