Local adaptation and phenotypic plasticity both occurred in Wedelia trilobata invasion across a tropical island

Si, Chun-Can; Dai, Zhi‐Cong; Lin, Ying-Hsuan; Qi, Shanshan; Huang, Ping; Miao, ShiLi; Du, Daolin

doi:10.1007/s10530-014-0667-4

Cited by 42 publications

(45 citation statements)

References 48 publications

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“…A review by Si et al (2014) concluded that plants from sunny habitats had more clonal traits than those from shady habitats. It would be interesting to test whether high light availability increases benefits of integration under uniform conditions in some of these species.…”

Section: Discussionmentioning

confidence: 99%

Clonal integration in homogeneous environments increases performance of Alternanthera philoxeroides

et al. 2015

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Physiological integration between connected ramets can increase the performance of clonal plants when ramets experience contrasting levels of resource availabilities in heterogeneous environments. It has generally been shown or assumed that clonal integration has little effect on clonal performance in homogeneous environments. However, a conceptual model suggests that integration could increase performance in a homogeneous environment when connected ramets differ in uptake ability and external resource supply is high. We tested this hypothesis in a greenhouse experiment with the amphibious plant Alternanthera philoxeroides. Ramets in clonal fragments containing three rooted and two unrooted ramets were either left connected or divided into a basal part with two rooted ramets and an apical part with the other ramets. To simulate realistic, homogeneous environments of the species with different levels of resource supply, plants were grown at 0, 20, or 40 cm of water depth. Water depth had a positive effect on most measures of growth, indicating that resource supply increased with depth. Connection had negative to neutral effects on total growth of fragments at a water depth of 0 cm, and neutral to positive effects at 20- and 40-cm depths; effects on the apical part were generally positive and larger at greater depth; effects on the basal part were generally negative and smaller at greater depth. Results largely supported the hypothesis and further suggest that clonal integration of allocation and reproduction may modify benefits of resource sharing in homogeneous environments.

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Section: Discussionmentioning

confidence: 99%

Clonal integration in homogeneous environments increases performance of Alternanthera philoxeroides

et al. 2015

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“…Furthermore, an invasive species may also spread across diverse habitats via local adaptation, evolving ecotypes with distinctive traits, and patterns of individual plasticity [4–7]. Although the majority of all published studies showed that both phenotypic plasticity and local adaptation contributed to invasion success [5, 8], the relative importance of both strategies has been subject to debate [9] and depends on species. Matesanz et al verified that phenotypic plasticity (rather than locally adapted ecotypes) allows the Asian annual plant Polygonum cespitosum to colonize a wide range of habitats in northeastern North America [10].…”

Section: Introductionmentioning

confidence: 99%

Individual Plasticity of the Shade Response of the Invasive Solidago canadensis in China

Liu

Yan

et al. 2017

PLoS ONE

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To evaluate the population variation, individual plasticity, and local adaptability of Solidago canadensis in response to shade treatment, we conducted a common pots experiment with a total of 150 ramets (5 genets, 15 populations, and 2 treatments) subjected to both control (natural light) and shady treatment (10% of natural light). Shade treatment significantly reduced growth and content of defense metabolites in S. canadensis. Compared to control, shading led to increased height, decreased basal diameter, increased leaf width, increased leaf length, increased chlorophyll content, stronger photosynthetic rate (Pn), stronger stomatal conductance (gs), and lower root to shoot ratio. Three-way analysis of variance revealed geographical origin to significantly affect the basal diameter of S. canadensis, while genotype significantly affected plant height, intercelluar CO2 concentration (Ci), transpiration rate (Tr), and proline content. Significant interactive effects between shade and geographic origin were prevalent for most traits. The phenotypic differentiation coefficient of the plasticity of all traits was below 0.4, indicating that most of all variations can be found among individuals within populations. Phenotypic selection analysis revealed that fitness was significantly positively related to plant height, basal diameter, Ci, total flavonoid content, as well as the plasticity of plant height, leaf length, leaf width, gs, Ci, total flavonoid content, and malondialdehyde content under the control condition. However, subjected to shade, fitness was only significantly positively related to plant height, basal diameter, and the plasticity of basal diameter. Rather than local adaption, these results suggest that individual plasticity played a more prominent role in the shade response of the invasive S. canadensis.

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“…Alien plants often exhibit broad environmental tolerance (Vilà et al, 2007; Hellmann et al, 2008; Scasta et al, 2015) and high phenotypic plasticity (Richards et al, 2006; Davidson et al, 2011; Si et al, 2014), facilitating their successful growth in novel environments with high resource availability (Davis et al, 2000; Pyšek and Richardson, 2007; Dostal et al, 2013). Numerous experimental studies have demonstrated that global environmental changes promote plant invasion.…”

Section: Introductionmentioning

confidence: 99%

How Will Global Environmental Changes Affect the Growth of Alien Plants?

Jia

Liu

2016

Front. Plant Sci.

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Global environmental changes can create novel habitats, promoting the growth of alien plants that often exhibit broad environmental tolerance and high phenotypic plasticity. However, the mechanisms underlying these growth promotory effects are unknown at present. Here, we conducted a phylogenetically controlled meta-analysis using data from 111 published studies encompassing the responses of 129 alien plants to global warming, increased precipitation, N deposition, and CO2 enrichment. We compared the differences in the responses of alien plants to the four global environmental change factors across six categories of functional traits between woody and non-woody life forms as well as C3 and C4 photosynthetic pathways. Our results showed that all four global change factors promote alien plant growth. Warming had a more positive effect on C4 than C3 plants. Although the effects of the four factors on the functional traits of alien plants were variable, plant growth was mainly promoted via an increase in growth rate and size. Our data suggest that potential future global environmental changes could further facilitate alien plant growth.

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Local adaptation and phenotypic plasticity both occurred in Wedelia trilobata invasion across a tropical island

Cited by 42 publications

References 48 publications

Clonal integration in homogeneous environments increases performance of Alternanthera philoxeroides

Clonal integration in homogeneous environments increases performance of Alternanthera philoxeroides

Individual Plasticity of the Shade Response of the Invasive Solidago canadensis in China

How Will Global Environmental Changes Affect the Growth of Alien Plants?

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