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Čuda J, Pyšková K, Hejda M, Foxcroft LC, MacFadyen S, Storch D, Tropek R, Zambatis G, Pyšek P. Habitat modifies the relationship between grass and herbivore species richness in a South African savanna. Ecol Evol 2024; 14:e11167. [PMID: 38623521 PMCID: PMC11016939 DOI: 10.1002/ece3.11167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 03/01/2024] [Accepted: 03/06/2024] [Indexed: 04/17/2024] Open
Abstract
The savanna ecosystem is dominated by grasses, which are a key food source for many species of grazing animals. This relationship creates a diverse mosaic of habitats and contributes to the high grass species richness of savannas. However, how grazing interacts with environmental conditions in determining grass species richness and abundance in savannas is still insufficiently understood. In the Kruger National Park, South Africa, we recorded grass species and estimated their covers in 60 plots 50 × 50 m in size, accounting for varying proximity to water and different bedrocks. To achieve this, we located plots (i) near perennial rivers, near seasonal rivers, and on crests that are distant from all water sources and (ii) on nutrient-rich basaltic and nutrient-poor granitic bedrock. The presence and abundance of large herbivores were recorded by 60 camera traps located in the same plots. Grass cover was higher at crests and seasonal rivers than at perennial rivers and on basalts than on granites. The relationship between grass species richness and herbivore abundance or species richness was positive at crests, while that between grass species richness and herbivore species richness was negative at seasonal rivers. We found no support for controlling the dominance of grasses by herbivores in crests, but herbivore-induced microsite heterogeneity may account for high grass species richness there. In contrast, the decrease in grass species richness with herbivore species richness at seasonal rivers indicates that the strong grazing pressure over-rides the resistance of some species to grazing and trampling. We suggest that the relationships between grasses and herbivores may work in both directions, but the relationship is habitat-dependent, so that in less productive environments, the effect of herbivores on vegetation prevails, while in more productive environments along rivers the effect of vegetation and water supply on herbivores is more important.
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Affiliation(s)
- Jan Čuda
- Department of Invasion EcologyCzech Academy of Sciences, Institute of BotanyPrůhoniceCzech Republic
| | - Klára Pyšková
- Department of Invasion EcologyCzech Academy of Sciences, Institute of BotanyPrůhoniceCzech Republic
- Department of Ecology, Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Martin Hejda
- Department of Invasion EcologyCzech Academy of Sciences, Institute of BotanyPrůhoniceCzech Republic
| | | | - Sandra MacFadyen
- Centre for Invasion Biology, Department of Botany and ZoologyStellenbosch UniversityMatielandSouth Africa
- Department of Mathematical SciencesStellenbosch UniversityMatielandSouth Africa
| | - David Storch
- Department of Ecology, Faculty of ScienceCharles UniversityPragueCzech Republic
- Centre for Theoretical StudiesCharles UniversityPragueCzech Republic
| | - Robert Tropek
- Department of Ecology, Faculty of ScienceCharles UniversityPragueCzech Republic
- Czech Academy of SciencesBiology Centre, Institute of EntomologyČeské BudějoviceCzech Republic
| | - Guin Zambatis
- Scientific Services, South African National ParksSkukuzaSouth Africa
| | - Petr Pyšek
- Department of Invasion EcologyCzech Academy of Sciences, Institute of BotanyPrůhoniceCzech Republic
- Department of Ecology, Faculty of ScienceCharles UniversityPragueCzech Republic
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2
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Salgado AL, Glassmire AE, Sedio BE, Diaz R, Stout MJ, Čuda J, Pyšek P, Meyerson LA, Cronin JT. Metabolomic Evenness Underlies Intraspecific Differences Among Lineages of a Wetland Grass. J Chem Ecol 2023; 49:437-450. [PMID: 37099216 DOI: 10.1007/s10886-023-01425-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/20/2023] [Accepted: 04/05/2023] [Indexed: 04/27/2023]
Abstract
The metabolome represents an important functional trait likely important to plant invasion success, but we have a limited understanding of whether the entire metabolome or targeted groups of compounds confer an advantage to invasive as compared to native taxa. We conducted a lipidomic and metabolomic analysis of the cosmopolitan wetland grass Phragmites australis. We classified features into metabolic pathways, subclasses, and classes. Subsequently, we used Random Forests to identify informative features to differentiate five phylogeographic and ecologically distinct lineages: European native, North American invasive, North American native, Gulf, and Delta. We found that lineages had unique phytochemical fingerprints, although there was overlap between the North American invasive and North American native lineages. Furthermore, we found that divergence in phytochemical diversity was driven by compound evenness rather than metabolite richness. Interestingly, the North American invasive lineage had greater chemical evenness than the Delta and Gulf lineages but lower evenness than the North American native lineage. Our results suggest that metabolomic evenness may represent a critical functional trait within a plant species. Its role in invasion success, resistance to herbivory, and large-scale die-off events common to this and other plant species remain to be investigated.
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Affiliation(s)
- Ana L Salgado
- Department of Biological Sciences, Louisiana State University, Life Sciences Building, Baton Rouge, LA, 70803, USA.
| | - Andrea E Glassmire
- Department of Biological Sciences, Louisiana State University, Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Brian E Sedio
- Department of Integrative Biology, University of Texas, Austin, TX, 78712, USA
- Smithsonian Tropical Research Institute, Balboa, Ancón, Apartado, 0843-03092, Republic of Panama
| | - Rodrigo Diaz
- Department of Entomology, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Michael J Stout
- Department of Entomology, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Jan Čuda
- Department of Invasion Ecology, Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic
| | - Petr Pyšek
- Department of Invasion Ecology, Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic
- Department of Ecology, Faculty of Science, Charles University, Prague, CZ -128 44, Czech Republic
| | - Laura A Meyerson
- Department of Natural Resource Sciences, University of Rhode Island, Kingston, RI, 02881, USA
| | - James T Cronin
- Department of Biological Sciences, Louisiana State University, Life Sciences Building, Baton Rouge, LA, 70803, USA
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3
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Hierro JL, Eren Ö, Čuda J, Meyerson LA. Evolution of increased competitive ability (
EICA
) may explain dominance of introduced species in ruderal communities. ECOL MONOGR 2022. [DOI: 10.1002/ecm.1524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- José L. Hierro
- Laboratorio de Ecología, Biogeografía y Evolución Vegetal (LEByEV) Instituto de Ciencias de la Tierra y Ambientales de La Pampa (INCITAP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)‐Universidad Nacional de La Pampa (UNLPam) Santa Rosa Argentina
- Departamento de Biología Facultad de Ciencias Exactas y Naturales, UNLPam
| | - Özkan Eren
- Aydin Adnan Menderes Üniversitesi, Biyoloji Bölümü, Fen‐Edebiyat Fakültesi Aydın Turkey
| | - Jan Čuda
- Czech Academy of Sciences, Institute of Botany, Department of Invasion Ecology Průhonice Czech Republic
| | - Laura A. Meyerson
- The University of Rhode Island, Department of Natural Resources Science Kingston RI USA
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Hejda M, Čuda J, Pyšková K, Zambatis G, Foxcroft LC, MacFadyen S, Storch D, Tropek R, Pyšek P. Water availability, bedrock, disturbance by herbivores, and climate determine plant diversity in South-African savanna. Sci Rep 2022; 12:338. [PMID: 35013353 PMCID: PMC8748544 DOI: 10.1038/s41598-021-02870-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 11/17/2021] [Indexed: 11/09/2022] Open
Abstract
To identify factors that drive plant species richness in South-African savanna and explore their relative importance, we sampled plant communities across habitats differing in water availability, disturbance, and bedrock, using the Kruger National Park as a model system. We made plant inventories in 60 plots of 50 × 50 m, located in three distinct habitats: (i) at perennial rivers, (ii) at seasonal rivers with water available only during the rainy season, and (iii) on crests, at least ~ 5 km away from any water source. We predicted that large herbivores would utilise seasonal rivers' habitats less intensely than those along perennial rivers where water is available throughout the year, including dry periods. Plots on granite harboured more herbaceous and shrub species than plots on basalt. The dry crests were poorer in herb species than both seasonal and perennial rivers. Seasonal rivers harboured the highest numbers of shrub species, in accordance with the prediction of the highest species richness at relatively low levels of disturbance and low stress from the lack of water. The crests, exposed to relatively low pressure from grazing but stressed by the lack of water, are important from the conservation perspective because they harbour typical, sometimes rare savanna species, and so are seasonal rivers whose shrub richness is stimulated and maintained by the combination of moderate disturbance imposed by herbivores and position in the middle of the water availability gradient. To capture the complexity of determinants of species richness in KNP, we complemented the analysis of the above local factors by exploring large-scale factors related to climate, vegetation productivity, the character of dominant vegetation, and landscape features. The strongest factor was temperature; areas with the highest temperatures reveal lower species richness. Our results also suggest that Colophospermum mopane, a dominant woody species in the north of KNP is not the ultimate cause of the lower plant diversity in this part of the park.
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Affiliation(s)
- Martin Hejda
- Institute of Botany, Department of Invasion Ecology, Czech Academy of Sciences, 25243, Průhonice, Czech Republic.
| | - Jan Čuda
- Institute of Botany, Department of Invasion Ecology, Czech Academy of Sciences, 25243, Průhonice, Czech Republic
| | - Klára Pyšková
- Institute of Botany, Department of Invasion Ecology, Czech Academy of Sciences, 25243, Průhonice, Czech Republic.,Department of Ecology, Faculty of Science, Charles University, Viničná 7, 12844, Prague, Czech Republic
| | - Guin Zambatis
- Scientific Services, South African National Parks, Private Bag X402, Skukuza, 1350, South Africa
| | - Llewellyn C Foxcroft
- Scientific Services, South African National Parks, Private Bag X402, Skukuza, 1350, South Africa.,Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
| | - Sandra MacFadyen
- Department of Mathematical Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - David Storch
- Department of Ecology, Faculty of Science, Charles University, Viničná 7, 12844, Prague, Czech Republic.,Center for Theoretical Study, Charles University, Prague, Czech Republic
| | - Robert Tropek
- Department of Ecology, Faculty of Science, Charles University, Viničná 7, 12844, Prague, Czech Republic.,Biology Centre, Institute of Entomology, Czech Academy of Sciences, Branišovská 31, 37005, České Budějovice, Czech Republic
| | - Petr Pyšek
- Institute of Botany, Department of Invasion Ecology, Czech Academy of Sciences, 25243, Průhonice, Czech Republic. .,Department of Ecology, Faculty of Science, Charles University, Viničná 7, 12844, Prague, Czech Republic.
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Pyšek P, Hejda M, Čuda J, Zambatis G, Pyšková K, MacFadyen S, Storch D, Tropek R, Foxcroft LC. Into the great wide open: do alien plants spread from rivers to dry savanna in the Kruger National Park? NB 2020. [DOI: 10.3897/neobiota.60.54608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Protected areas play an important role as refuges from invasive species impacts on biodiversity. Within the MOSAIK (Monitoring Savanna Biodiversity in the Kruger National Park) project, plant species were recorded in a representative set of 60 plots, 50 × 50 m in size, across the entire KNP, distributed so as to cover a range of savanna habitats, i.e. perennial rivers, seasonal rivers and dry crests, and two main bedrock types (granite and basalt). The data were used to assess the role of rivers in the dispersal of alien plants and study whether the alien plant species spread from rivers to open dry savanna. The resulting dataset provided the first thorough information on the spatial distribution of naturalised alien plants in KNP. In total, we recorded 20 plant species that are alien to the park, four of them considered invasive: Parthenium hysterophorus, Opuntia stricta, Xanthium strumarium and Zinnia peruviana. The most widespread species in KNP was Tridax procumbens, recorded in 11 plots (i.e. 18% of all sampled), four other species were found in > 10% of the plots. One species, Bidens bipinnata, was not previously reported from the park and represents a new record. The majority of aliens were concentrated along perennial rivers (60% of all occurrences), but some were repeatedly recorded at seasonal rivers as well and two of the most invasive species in KNP, Opuntia stricta and Parthenium hysterophorus, occurred also on dry crests away from water. The average number of alien species per plot was low (1.6), as was their mean percentage contribution to all species in a plot (2.2%), but some plots harboured as many as seven species and contributed up to 11.9%. Moreover, only 21 plots (35%) were alien-species free. In terms of the total species number per habitat, perennial rivers had significantly more aliens than crests and were marginally significantly richer than seasonal rivers. By recording all naturalised alien species occurring in the plots – many of them are not invasive but may become so in the future – and by using the GloNAF database of global distribution of naturalised species, we assessed the invasion potential of the recorded species.
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Novoa A, Richardson DM, Pyšek P, Meyerson LA, Bacher S, Canavan S, Catford JA, Čuda J, Essl F, Foxcroft LC, Genovesi P, Hirsch H, Hui C, Jackson MC, Kueffer C, Le Roux JJ, Measey J, Mohanty NP, Moodley D, Müller-Schärer H, Packer JG, Pergl J, Robinson TB, Saul WC, Shackleton RT, Visser V, Weyl OLF, Yannelli FA, Wilson JRU. Invasion syndromes: a systematic approach for predicting biological invasions and facilitating effective management. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02220-w] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
AbstractOur ability to predict invasions has been hindered by the seemingly idiosyncratic context-dependency of individual invasions. However, we argue that robust and useful generalisations in invasion science can be made by considering “invasion syndromes” which we define as “a combination of pathways, alien species traits, and characteristics of the recipient ecosystem which collectively result in predictable dynamics and impacts, and that can be managed effectively using specific policy and management actions”. We describe this approach and outline examples that highlight its utility, including: cacti with clonal fragmentation in arid ecosystems; small aquatic organisms introduced through ballast water in harbours; large ranid frogs with frequent secondary transfers; piscivorous freshwater fishes in connected aquatic ecosystems; plant invasions in high-elevation areas; tall-statured grasses; and tree-feeding insects in forests with suitable hosts. We propose a systematic method for identifying and delimiting invasion syndromes. We argue that invasion syndromes can account for the context-dependency of biological invasions while incorporating insights from comparative studies. Adopting this approach will help to structure thinking, identify transferrable risk assessment and management lessons, and highlight similarities among events that were previously considered disparate invasion phenomena.
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Pyšek P, Čuda J, Šmilauer P, Skálová H, Chumová Z, Lambertini C, Lučanová M, Ryšavá H, Trávníček P, Šemberová K, Meyerson LA. Competition among native and invasive Phragmites australis populations: An experimental test of the effects of invasion status, genome size, and ploidy level. Ecol Evol 2020; 10:1106-1118. [PMID: 32076501 PMCID: PMC7029062 DOI: 10.1002/ece3.5907] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/30/2019] [Accepted: 11/10/2019] [Indexed: 01/29/2023] Open
Abstract
Among the traits whose relevance for plant invasions has recently been suggested are genome size (the amount of nuclear DNA) and ploidy level. So far, research on the role of genome size in invasiveness has been mostly based on indirect evidence by comparing species with different genome sizes, but how karyological traits influence competition at the intraspecific level remains unknown. We addressed these questions in a common-garden experiment evaluating the outcome of direct intraspecific competition among 20 populations of Phragmites australis, represented by clones collected in North America and Europe, and differing in their status (native and invasive), genome size (small and large), and ploidy levels (tetraploid, hexaploid, or octoploid). Each clone was planted in competition with one of the others in all possible combinations with three replicates in 45-L pots. Upon harvest, the identity of 21 shoots sampled per pot was revealed by flow cytometry and DNA analysis. Differences in performance were examined using relative proportions of shoots of each clone, ratios of their aboveground biomass, and relative yield total (RYT). The performance of the clones in competition primarily depended on the clone status (native vs. invasive). Measured in terms of shoot number or aboveground biomass, the strongest signal observed was that North American native clones always lost in competition to the other two groups. In addition, North American native clones were suppressed by European natives to a similar degree as by North American invasives. North American invasive clones had the largest average shoot biomass, but only by a limited, nonsignificant difference due to genome size. There was no effect of ploidy on competition. Since the North American invaders of European origin are able to outcompete the native North American clones, we suggest that their high competitiveness acts as an important driver in the early stages of their invasion.
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Affiliation(s)
- Petr Pyšek
- Department of Invasion EcologyInstitute of BotanyCzech Academy of SciencesPrůhoniceCzech Republic
- Department of EcologyFaculty of ScienceCharles UniversityPragueCzech Republic
| | - Jan Čuda
- Department of Invasion EcologyInstitute of BotanyCzech Academy of SciencesPrůhoniceCzech Republic
| | - Petr Šmilauer
- Department of Ecosystem BiologyFaculty of ScienceUniversity of South BohemiaČeské BudějoviceCzech Republic
| | - Hana Skálová
- Department of Invasion EcologyInstitute of BotanyCzech Academy of SciencesPrůhoniceCzech Republic
| | - Zuzana Chumová
- Department of Evolutionary Biology of PlantsInstitute of BotanyCzech Academy of SciencesPrůhoniceCzech Republic
- Department of BotanyFaculty of ScienceCharles UniversityPragueCzech Republic
| | - Carla Lambertini
- Department of Agricultural and Food SciencesUniversity of BolognaBolognaItaly
| | - Magdalena Lučanová
- Department of Evolutionary Biology of PlantsInstitute of BotanyCzech Academy of SciencesPrůhoniceCzech Republic
- Department of BotanyFaculty of ScienceUniversity of South BohemiaČeské BudějoviceCzech Republic
| | - Hana Ryšavá
- Department of BotanyFaculty of ScienceCharles UniversityPragueCzech Republic
| | - Pavel Trávníček
- Department of Evolutionary Biology of PlantsInstitute of BotanyCzech Academy of SciencesPrůhoniceCzech Republic
| | - Kristýna Šemberová
- Department of Evolutionary Biology of PlantsInstitute of BotanyCzech Academy of SciencesPrůhoniceCzech Republic
- Department of BotanyFaculty of ScienceCharles UniversityPragueCzech Republic
| | - Laura A. Meyerson
- Department of Natural Resources ScienceThe University of Rhode IslandKingstonRIUSA
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Skálová H, Moravcová L, Čuda J, Pyšek P. Seed-bank dynamics of native and invasive Impatiens species during a five-year field experiment under various environmental conditions. NB 2019. [DOI: 10.3897/neobiota.50.34827] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Despite recent evidence on the important role of seed banks associated with plant invasions, and a large body of literature on invasive annual Impatiens species, little is known about the seed bank characteristics of Impatiens species. To bridge this gap, we conducted a five-year field experiment where we buried seeds of two invasive species (I. glandulifera and I. parviflora) and one native species (I. noli-tangere) across four localities in the Czech Republic, harbouring all three Impatiens species and differing in the environmental conditions. We found that the three Impatiens species differed in the characteristics of their seed banks. Both invasive species had a high seed germination rate of almost 100% in the first year after seed burial, while <50% of seeds of the native I. noli-tangere germinated during this year. In I. parviflora all seeds germinated in the first year after seed burial and later decomposed, i.e. the species had a transient seed bank. For I. glandulifera, the most invasive species, the survival of seeds differed among localities. At the first and second localities, the seeds decomposed in the first year after seed burial; in the third locality the seeds germinated in the second year; and in the fourth one, the seeds still germinated in the fourth year. The native I. noli-tangere formed a short-term persistent seed bank across all localities. Germinating or dormant seeds were found in the third year after burial in all localities, and in one locality the seeds persisted until the fifth year. The germination and dormancy in I. noli-tangere were constrained by low minimum temperatures during winter. In addition, germination was highest at intermediate soil moisture, and the most dormant seeds were recorded in soils with intermediate nitrogen concentration. The germination of I. glandulifera was slightly limited by low soil nitrogen. However, no such effect was found in I. parviflora. We suggest that in the invasive Impatiens species seed resistance to environmental factors and high germination at least partly explain their wide distribution.
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Pyšek P, Skálová H, Čuda J, Guo WY, Suda J, Doležal J, Kauzál O, Lambertini C, Lučanová M, Mandáková T, Moravcová L, Pyšková K, Brix H, Meyerson LA. Small genome separates native and invasive populations in an ecologically important cosmopolitan grass. Ecology 2019; 99:79-90. [PMID: 29313970 DOI: 10.1002/ecy.2068] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 10/08/2017] [Accepted: 10/16/2017] [Indexed: 01/24/2023]
Abstract
The literature suggests that small genomes promote invasion in plants, but little is known about the interaction of genome size with other traits or about the role of genome size during different phases of the invasion process. By intercontinental comparison of native and invasive populations of the common reed Phragmites australis, we revealed a distinct relationship between genome size and invasiveness at the intraspecific level. Monoploid genome size was the only significant variable that clearly separated the North American native plants from those of European origin. The mean Cx value (the amount of DNA in one chromosome set) for source European native populations was 0.490 ± 0.007 (mean ± SD), for North American invasive 0.506 ± 0.020, and for North American native 0.543 ± 0.021. Relative to native populations, the European populations that successfully invaded North America had a smaller genome that was associated with plant traits favoring invasiveness (long rhizomes, early emerging abundant shoots, resistance to aphid attack, and low C:N ratio). The knowledge that invasive populations within species can be identified based on genome size can be applied to screen potentially invasive populations of Phragmites in other parts of the world where they could grow in mixed stands with native plants, as well as to other plant species with intraspecific variation in invasion potential. Moreover, as small genomes are better equipped to respond to extreme environmental conditions such as drought, the mechanism reported here may represent an emerging driver for future invasions and range expansions.
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Affiliation(s)
- Petr Pyšek
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic.,Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ-128 44, Prague, Czech Republic
| | - Hana Skálová
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic
| | - Jan Čuda
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic.,Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ-128 44, Prague, Czech Republic
| | - Wen-Yong Guo
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic
| | | | - Jan Doležal
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic.,Museum and Gallery of the Orlické hory Mts, Jiráskova 2, CZ-516 01, Rychnov nad Kněžnou, Czech Republic
| | - Ondřej Kauzál
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic.,Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ-128 44, Prague, Czech Republic
| | - Carla Lambertini
- Department of Bioscience, Faculty of Science, Aarhus University, Ole Worms Alle 1, DK-8000, Aarhus C, Denmark
| | - Magdalena Lučanová
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic.,Department of Botany, Faculty of Science, Charles University, Benátská 2, CZ-128 00, Prague, Czech Republic
| | - Terezie Mandáková
- Plant Cytogenomics Research Group, CEITEC - Central European Institute of Technology, Masaryk University, 625 00, Brno, Czech Republic
| | - Lenka Moravcová
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic
| | - Klára Pyšková
- Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43, Průhonice, Czech Republic.,Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ-128 44, Prague, Czech Republic
| | - Hans Brix
- Department of Bioscience, Faculty of Science, Aarhus University, Ole Worms Alle 1, DK-8000, Aarhus C, Denmark
| | - Laura A Meyerson
- Department of Natural Resources Science, The University of Rhode Island, Kingston, Rhode Island, 02881, USA
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Čuda J, Vítková M, Albrechtová M, Guo WY, Barney JN, Pyšek P. Invasive herb Impatiens glandulifera has minimal impact on multiple components of temperate forest ecosystem function. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1508-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Čuda J, Rumlerová Z, Brůna J, Skálová H, Pyšek P. Floods affect the abundance of invasiveImpatiens glanduliferaand its spread from river corridors. DIVERS DISTRIB 2017. [DOI: 10.1111/ddi.12524] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Jan Čuda
- Department of Invasion Ecology; Institute of Botany; The Czech Academy of Sciences; CZ-252 43 Průhonice Czech Republic
- Department of Ecology; Faculty of Science; Charles University; Viničná 7 CZ-128 44 Prague Czech Republic
| | - Zuzana Rumlerová
- Department of Invasion Ecology; Institute of Botany; The Czech Academy of Sciences; CZ-252 43 Průhonice Czech Republic
- Department of Ecology; Faculty of Science; Charles University; Viničná 7 CZ-128 44 Prague Czech Republic
| | - Josef Brůna
- Department of GIS and Remote Sensing; Institute of Botany; The Czech Academy of Sciences; CZ-252 43 Průhonice Czech Republic
| | - Hana Skálová
- Department of Invasion Ecology; Institute of Botany; The Czech Academy of Sciences; CZ-252 43 Průhonice Czech Republic
| | - Petr Pyšek
- Department of Invasion Ecology; Institute of Botany; The Czech Academy of Sciences; CZ-252 43 Průhonice Czech Republic
- Department of Ecology; Faculty of Science; Charles University; Viničná 7 CZ-128 44 Prague Czech Republic
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Čuda J, Skálová H, Janovský Z, Pyšek P. Competition among native and invasive Impatiens species: the roles of environmental factors, population density and life stage. AoB Plants 2015; 7:plv033. [PMID: 25832103 PMCID: PMC4417208 DOI: 10.1093/aobpla/plv033] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 03/26/2015] [Indexed: 06/01/2023]
Abstract
Many invasive species are considered competitively superior to native species, with the strongest competition expected in species with similar niches and/or in closely related species. However, competition outcome is strongly context-dependent as competitive strength varies along environmental gradients, and life stages, and also depends on abundances. To explore the importance of these factors, we examined competition effects in an experiment with three Impatiens species (Balsaminaceae) widespread in central Europe and sharing similar life-history characteristics and habitats: the native I. noli-tangere, and two invasive species, I. parviflora and I. glandulifera. We compared their competitive strength and reciprocal impacts under two levels of water and light availability, two overall planting densities and three competitor densities. We assessed species performance (ability to complete the life-cycle, biomass and fecundity) and temporal competition dynamics in a garden pot experiment. Environmental variables had lower explanatory power than overall planting and competitor density, which indicates the importance of competitive interactions when evaluating plant performance and potential invasion success. Despite poor and delayed germination, the invasive I. glandulifera attained dominance even at a high competitor density and was competitively superior across all treatments, exceeding the height of both congeners. Impatiens parviflora was competitively weakest, having a negligible impact on both native I. noli-tangere and invasive I. glandulifera. The intermediate competitive strength of the native I. noli-tangere probably results from its intermediate height, and good germination rate and timing. The difference in height among species increased during the experiment when I. glandulifera was involved; this species continues growing until autumn, enhancing its competitive superiority. The results provide a mechanistic understanding for the competitive exclusion of native I. noli-tangere that occurs in stands with I. glandulifera, but the limited impact of I. parviflora on I. noli-tangere in their mixed stands.
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Affiliation(s)
- Jan Čuda
- Department of Invasion Ecology, Institute of Botany, The Czech Academy of Sciences, Průhonice CZ-252 43, Czech Republic Department of Ecology, Faculty of Science, Charles University in Prague, Viničná 7, Prague CZ-128 44, Czech Republic
| | - Hana Skálová
- Department of Invasion Ecology, Institute of Botany, The Czech Academy of Sciences, Průhonice CZ-252 43, Czech Republic
| | - Zdeněk Janovský
- Department of Invasion Ecology, Institute of Botany, The Czech Academy of Sciences, Průhonice CZ-252 43, Czech Republic Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, Prague CZ-128 01, Czech Republic
| | - Petr Pyšek
- Department of Invasion Ecology, Institute of Botany, The Czech Academy of Sciences, Průhonice CZ-252 43, Czech Republic Department of Ecology, Faculty of Science, Charles University in Prague, Viničná 7, Prague CZ-128 44, Czech Republic
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Marková Z, Šišková KM, Filip J, Čuda J, Kolář M, Šafářová K, Medřík I, Zbořil R. Air stable magnetic bimetallic Fe-Ag nanoparticles for advanced antimicrobial treatment and phosphorus removal. Environ Sci Technol 2013; 47:5285-5293. [PMID: 23590411 DOI: 10.1021/es304693g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report on new magnetic bimetallic Fe-Ag nanoparticles (NPs) which exhibit significant antibacterial and antifungal activities against a variety of microorganisms including disease causing pathogens, as well as prolonged action and high efficiency of phosphorus removal. The preparation of these multifunctional hybrids, based on direct reduction of silver ions by commercially available zerovalent iron nanoparticles (nZVI) is fast, simple, feasible in a large scale with a controllable silver NP content and size. The microscopic observations (transmission electron microscopy, scanning electron microscopy/electron diffraction spectroscopy) and phase analyses (X-ray diffraction, Mössbauer spectroscopy) reveal the formation of Fe₃O₄/γ-FeOOH double shell on a "redox" active nZVI surface. This shell is probably responsible for high stability of magnetic bimetallic Fe-Ag NPs during storage in air. Silver NPs, ranging between 10 and 30 nm depending on the initial concentration of AgNO₃, are firmly bound to Fe NPs, which prevents their release even during a long-term sonication. Taking into account the possibility of easy magnetic separation of the novel bimetallic Fe-Ag NPs, they represent a highly promising material for advanced antimicrobial and reductive water treatment technologies.
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Affiliation(s)
- Zdenka Marková
- Regional Centre of Advanced Technologies and Materials, Departments of Physical Chemistry and Experimental Physics, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
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Pečová M, Šebela M, Marková Z, Poláková K, Čuda J, Šafářová K, Zbořil R. Thermostable trypsin conjugates immobilized to biogenic magnetite show a high operational stability and remarkable reusability for protein digestion. Nanotechnology 2013; 24:125102. [PMID: 23466477 DOI: 10.1088/0957-4484/24/12/125102] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this work, magnetosomes produced by microorganisms were chosen as a suitable magnetic carrier for covalent immobilization of thermostable trypsin conjugates with an expected applicability for efficient and rapid digestion of proteins at elevated temperatures. First, a biogenic magnetite was isolated from Magnetospirillum gryphiswaldense and its free surface was coated with the natural polysaccharide chitosan containing free amino and hydroxy groups. Prior to covalent immobilization, bovine trypsin was modified by conjugating with α-, β- and γ-cyclodextrin. Modified trypsin was bound to the magnetic carriers via amino groups using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and N-hydroxysulfosuccinimide as coupling reagents. The magnetic biomaterial was characterized by magnetometric analysis and electron microscopy. With regard to their biochemical properties, the immobilized trypsin conjugates showed an increased resistance to elevated temperatures, eliminated autolysis, had an unchanged pH optimum and a significant storage stability and reusability. Considering these parameters, the presented enzymatic system exhibits properties that are superior to those of trypsin forms obtained by other frequently used approaches. The proteolytic performance was demonstrated during in-solution digestion of model proteins (horseradish peroxidase, bovine serum albumin and hen egg white lysozyme) followed by mass spectrometry. It is shown that both magnetic immobilization and chemical modification enhance the characteristics of trypsin making it a promising tool for protein digestion.
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Affiliation(s)
- M Pečová
- Department of Protein Biochemistry and Proteomics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
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