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220 results for “Phragmites australis”
Global ploidy levels of Phragmites australis
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Data from: Battle of the giants: Clonal expansion rates, effects on wetland plant communities, and competition between introduced <em>Phragmites australis australis</em> and native <em>Phragmites australis americanus</em>
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Data from: Correlations among genetic, epigenetic, and phenotypic variation of Phragmites australis along latitudes
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Data from: Intraspecific and biogeographic variation in foliar fungal communities and pathogen damage of native and invasive Phragmites australis
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Data from: Competition among native and invasive Phragmites australis populations: an experimental test of the effects of invasion status, genome size, and ploidy level.
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Data from: Lineage and latitudinal variation in Phragmites australis tolerance to herbivory: implications for invasion success
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Data from: Strategies for a successful plant invasion: the reproduction of Phragmites australis in northeastern North America
1. Knowing the relative contribution of vegetative propagation and sexual reproduction to the dispersal and establishment of exotic plants is crucial for devising efficient control strategies. This is particularly true for the common reed (Phragmites australis), one of the most invasive species in North America. 2. For the first time we combined in situ field observations and genetic evidence, based on two genotyping techniques, i.e., microsatellite markers (SSR) and genotyping-by-sequencing (GBS), to determine the propagation strategies of this invader at its northern distribution limit in North America, and especially in roadside ditches. 3. Field observations revealed that, in a region where the common reed is already abundant, both seeds and plant fragments contributed to the establishment of new populations. Newly established individuals originated mostly (84%) from seeds rather than fragments, but a larger proportion of individuals originating from fragments survived the second year compared to seedlings. 4. High genetic diversity among marsh and roadside common reed stands indicated the prime role of sexual reproduction for dispersal. The vast majority of genotypes were found in only one stand; such high genetic variability can only be explained by sexual reproduction. Half the surveyed stands comprised a single clone, suggesting that local expansion mainly occurred vegetatively. As the small proportion of SSR genotypes initially thought to be common between distant stands proved to be distinct (as revealed by GBS data), it is likely that all the stands examined were initially founded by genetically distinct individuals. 5. Synthesis. Our study suggests that long-distance dispersal by seeds is important for the common reed, in marshes and roadsides, while both seeds and plant fragments contribute to short-distance dispersal along roads, at least in regions where the species is already abundant. The success of this invader in North America seems to be attributable to a reproduction strategy combining the advantages of sexuality with those of vegetative propagation. Moreover, this study shows that the GBS approach strongly reduces uncertainties associated with the use of a limited number of markers. This approach is especially valuable for ecologists dealing with an ever increasing number of invaders, of which few have identified microsatellite markers.
Intraspecific variation of Phragmites australis: Clinal adaption of functional traits and phenotypic plasticity vary with latitude of origin
<p>1. Widespread plant species generally have high intraspecific variation in functional traits, which is reflected in their great variety of phenotypes. This variety can result from both genetic differences due to local adaptation and phenotypic plasticity. With high intraspecific variation and nearly global distribution, the common reed <i>Phragmites australis</i> is a suitable model species for studying the underlying mechanisms of intraspecific trait variation. </p> <p>2. In this study, 71 genotypes of <i>P. australis</i> from seven phylogeographic groups were transplanted into two replicate common gardens located in very different climates: northern Europe and mid-east Asia. We measured seven functional traits of all these genotypes over the growing season, including shoot height, maximum biomass per shoot, shoot density, node number per stem, leaf lifespan, flowering occurrence and flowering date. Our aim was to assess the relative effects of genetic (phylogeographic origin) and environmental (common garden) status, and interactions between them, on intraspecific variation in functional traits of <i>P. australis</i>. </p> <p>3. We found common garden having the strongest influence on most functional traits studied. All traits except flowering occurrence varied significantly across gardens, revealing the important role of phenotypic plasticity on trait variation of <i>P. australis</i>. We also found significant differences in trait variation among the different phylogeographic groups of <i>P. australis</i> and, thus, evidence for genetically determined intraspecific variation in the morphological and life-history traits addressed in this study. All functional traits showed significant (p≤0.0054), albeit minor to moderately explained (<i>R</i><sup>2</sup> ≤0.57), latitudinal patterns in both gardens. Covariation of multiple traits was similar in the two gardens. Phenotypic plasticity was trait-specific, and the plasticity of shoot height and maximum biomass per shoot increased towards higher latitude of genotypic origin. Our results indicate that the latitude of origin affects the evolution of functional traits, as well as their phenotypic plasticity. </p> <p>4. Since phenotypic plasticity is a crucial mechanism for acclimation and evolution, our findings support the role of gene-based adaptive phenotypic plasticity in plant evolution. The intraspecific spatial variation of functional traits and their phenotypic plasticity can help predict species distribution, persistence and invasion under global climate change.</p>
Salt Water Exposure Exacerbates the Negative Response of Phragmites australis Haplotypes to Sea-Level Rise
<p>Dataset associated with the 2024 publication in the <em>Plants</em> journal dealing with <em>Phragmites australis </em>response to abiotic factors associated with rising sea levels. </p>
FIGURE. Puccinia phragmitis on Rumex patientia (A–E, I, K) and Phragmites australis (F–H, J). A, B Spermogonia and aecia on the lower leaf surface. C. Vertical section of a spermogonium. D. Vertical section of an aecium surrounded with peridia. E. Aeciospores. F, G. Telia on the leaf surface. H. Teliospores. I. Aecium observed under SEM. J. Vertical section of a telium. K. Aeciospores with various sizes of verrucae on the surface observed under SEM. Scale bars: C, D, E = 30 μm, H = 10 μm, I = 100 μm, J = 20 μm, K = 3 μm. in Phylogenetic approach for identification and life cycles of Puccinia (Pucciniaceae) species on Poaceae from northeastern China
FIGURE. Puccinia phragmitis on Rumex patientia (A–E, I, K) and Phragmites australis (F–H, J). A, B Spermogonia and aecia on the lower leaf surface. C. Vertical section of a spermogonium. D. Vertical section of an aecium surrounded with peridia. E. Aeciospores. F, G. Telia on the leaf surface. H. Teliospores. I. Aecium observed under SEM. J. Vertical section of a telium. K. Aeciospores with various sizes of verrucae on the surface observed under SEM. Scale bars: C, D, E = 30 μm, H = 10 μm, I = 100 μm, J = 20 μm, K = 3 μm.
Nipponaclerda biwakoensis infestation of Phragmites australis in the Mississippi River Delta, USA: Do fungal microbiomes play a role?
<p>Recently, significant die-back of nonnative common reed, <i>Phragmites australis,</i> has been reported in the Mississippi River Delta (MRD), Louisiana, USA. This dieback has been attributed to an invasive scale insect, <i>Nipponaclerda biwakoensis</i>. We test whether fungi are involved in the recent infestation by this insect and subsequent die-offs of <i>Phragmites australis</i>. Several haplotypes of <i>P. australis</i> occur in the MRD, and the European (M) and Delta (M1) haplotypes appear to experience differing levels of <i>N. biwakoensis </i>infestation. We tested whether these haplotypes differed in their fungal microbiomes in both their leaf and stem tissues, and whether differences in fungal community composition were linked to the level of infestation using a metabarcoding Internal Transcribed Spacer (ITS) amplicon sequencing approach. Our analyses showed differences in fungal community composition and diversity between haplotypes and tissue types, but none of these differences were directly correlated with <i>N. biwakoensis</i> infestation severity. However, we did find that the European haplotype hosted higher putative pathogen loads in stem tissues compared to the Delta haplotype, which may confer resistance to herbivory, though it is possible that differences in infestation between haplotypes are due to morphology.</p>
Data from: Native plant recovery following three years of common reed (Phragmites australis) control
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Intraspecific variation of Phragmites australis: Clinal adaption of functional traits and phenotypic plasticity vary with latitude of origin
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Nipponaclerda biwakoensis infestation of Phragmites australis in the Mississippi River Delta, USA: Do fungal microbiomes play a role?
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Data from: Strategies for a successful plant invasion: the reproduction of Phragmites australis in northeastern North America
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Fig. 17 in Chalcidoidea (Hymenoptera) obtained from common reed, Phragmites australis (Cav.) Trin. ex Steud. (Poaceae) in Iran with new records and descriptions of two new species
Fig. 17. Torymus arundinis (Walker, 1833). A. Female in lateral view. B. Antenna of female. C. Mesosoma in lateral view. D. Female in dorsal view.
Fig. 8 in Chalcidoidea (Hymenoptera) obtained from common reed, Phragmites australis (Cav.) Trin. ex Steud. (Poaceae) in Iran with new records and descriptions of two new species
Fig. 8. Aximopsis deserticola (Zerova, 2004) comb. nov. A. Female in lateral view. B. Head of female in frontal view. C. Fore wing venation. D. Mesosoma in lateral view. E. Head and antennae in lateral view. F. Male in lateral view. G. Male antenna.
Fig. 10 in Chalcidoidea (Hymenoptera) obtained from common reed, Phragmites australis (Cav.) Trin. ex Steud. (Poaceae) in Iran with new records and descriptions of two new species
Fig. 10. Tetramesa sp. A. Female in lateral view. B. Head of female in frontal view. C. Male in lateral view. D. Head and mesosoma in dorsal view.
Fig. 4 in Chalcidoidea (Hymenoptera) obtained from common reed, Phragmites australis (Cav.) Trin. ex Steud. (Poaceae) in Iran with new records and descriptions of two new species
Fig. 4. Echthroplexiella obscura (Hoffer, 1954). A. Female in lateral view. B. Head and mesosoma in dorsal view. C. Antenna of female.
Fig. 1. Anagyrus near alienus Japoshvili, 2012. A in Chalcidoidea (Hymenoptera) obtained from common reed, Phragmites australis (Cav.) Trin. ex Steud. (Poaceae) in Iran with new records and descriptions of two new species
Fig. 1. Anagyrus near alienus Japoshvili, 2012. A. Female body in lateral view. B. Right antenna of female. C. Male body in lateral view. D. Left antenna of male.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.