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100 results for “Solidago canadensis”
Solidago canadensis L. (BR0000011776055)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000011776383)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000012485246)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000012550968)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000011775416)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000020352608)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000024843973)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000005647866)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000011776680)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000024843966)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000011727415)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000025753318V)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000012560318)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000012563142)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000011776321)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000011775904)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Solidago canadensis L. (BR0000011776024)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Polyploidization-enhanced effective clonal reproduction endows the successful invasion of Solidago canadensis
Clonality and ploidy levels are positively associated with plant invasiveness. However, there is still no consensus on whether polyploidization can promote the invasion of alien plants by enhancing clonality. Our recent long-term community succession study found that the more vigorous clone of introduced polyploid Solidago canadensis succeeded into mono-dominant community, which seems to be a positive correlationship between polyploidization and clonal reproduction. However, how polyploidization improves the clonal reproduction of S. canadensis remains unknown. Here, we compared clonal growth ability among diploids and polyploids of S. canadensis from native and introduced ranges in a common garden. Results showed that the rhizomes of S. canadensis originated from axillary buds of dense nodes at the basal stem of seedling and then produced into clonal ramets. Diploids had denser nodes and more buds, developed more rhizomes per unit mass and produced more clonal propagules at the early growth stage compared with polyploids. However, the number of juvenile and secondary rhizomes, as well as the diameter and length of rhizomes in polyploid populations was significant higher than those of diploids, and those clonal traits in introduced polyploids were significant higher than in native polyploids. Moreover, a phalanx growth form was observed in native and introduced diploid populations, which allocated about 3% and 5% of the total biomass to rhizomes, respectively, resulting in short and weak rhizomes. However, native and introduced polyploids allocated about 35% and 40%, respectively, of the total biomass to rhizomes, resulting in long and strong rhizomes, which were guerrilla growth forms. This study firstly shows that polyploidization enhanced the effective clonal reproduction of S. canadensis through pre-adaptation and rapid post-adaptation evolution, and consequently contributed to its successful invasion.
Older populations of the invader Solidago canadensis exhibit stronger positive plant-soil feedbacks and competitive ability in China
<p><strong>PREMISE</strong></p> <p>The enemy release hypothesis predicts that release from natural enemies, including soil-borne pathogens, liberates invasive plants from a negative regulating force. Nevertheless, invasive plants may acquire novel enemies and mutualists in the introduced range, which may cause variable effects on invader growth. However, how soil microorganisms may influence competitive ability of invasive plants along invasion chronosequences has been little explored.</p> <p><strong>METHODS</strong></p> <p>Using the invasive plant <em>Solidago canadensis</em>, we tested whether longer residence times are associated with stronger negative plant-soil feedbacks and thus weaker competitive abilities at the individual level. We grew S. canadensis individuals from 36 populations with different residence times in competition versus no competition and in three different types of soils: (1) conspecific rhizospheric soils, (2) soil from uninvaded patches, and (3) sterilized soil. For our competitor treatments, we constructed synthetic communities of four native species <em>Bidens parviflora, Solanum nigrum, Kalimeris indica,</em> and <em>Mosla scabra</em>, which naturally co-occur with <em>S. canadensis</em> in the field.</p> <p><strong>RESULTS</strong></p> <p>Solidago canadensis populations with longer residence times experienced stronger positive plant-soil feedbacks and had greater competitive responses (i.e., produced greater above-ground biomass and grew taller) in conspecific rhizospheric soils than in sterilized and uninvaded soils. Moreover, <em>S. canadensis</em> from older populations significantly suppressed above-ground biomass of the native communities in rhizospheric and uninvaded soils but not in sterilized soil.</p> <p><strong>CONCLUSIONS</strong></p> <p>The present results suggest that older populations of <em>S. canadensis</em> experience stronger positive plant-soil feedback, which may enhance their competitive ability against native plant communities. </p>
Data for: Cytogeography of naturalized Solidago canadensis populations in Europe
<p><span>Autopolyploidization has driven the successful invasion of <em>Solidago canadensis</em> in East Asia. However, it was believed that only diploid <em>S. canadensis</em> invaded Europe, whereas polyploids never did. In this study, we aim to investigate whether polyploidy <em>S. canadensis</em> invaded Europe and compare</span><span> the </span><span>ecological niche differentiation pattern driven by ploidy in Asia and Europe and North America.</span><span>Here, </span><span>molecular identification (combination of ribosomal ITS and psbA-trnH intergenic spacer), ploidy level, and morphological traits of ten <em>S. canadensis</em> populations collected in Europe were compared with previously identified <em>S. canadensi</em>s populations from other continents and <em>S. altissima</em> populations. Furthermore, the ploidy-driven geographical differentiation pattern of <em>S. canadensis</em> in different continents was investigated. </span><span>Results showed that all ten European populations were identified as <em>S. canadensis</em> with five diploid and five hexaploid populations. Significant differences in morphological traits existed among diploids and polyploids (tetraploids and hexaploids), rather than between polyploids from different introduced ranges and between <em>S. altissima</em> and polyploidy <em>S. canadensis</em> populations.</span><span> The invasive hexaploids and diploids had few differences in latitudinal distributions in Europe which was similar to the native range but absolutely different from a distinct climate-niche differentiation in Asia. This may be attributed to the bigger difference in climate between Asia and Europe and North America.</span><span>The above morphological and molecular evidences proved the invasion of polyploid <em>S. canadensis </em>in Europe and suggest that </span><em><span>S. altissima</span></em><span> may be merged into a complex of </span><em><span>S. canadensis</span></em><span> species</span><span>.</span><span> Our study may be concluded that geographical and ecological niche differentiation of an invasive plant driven by ploidy depends on the degree of difference in the environmental factors between the introduced range and the native range, which provides new insight into the invasive mechanism.</span></p>
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