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83 results for “Helianthus annuus”
Helianthus annuus (Asteraceae) - inflorescence - frontal view of flower
Image of Helianthus annuus (Asteraceae) - inflorescence - frontal view of flower
Helianthus annuus (Asteraceae) - stem - showing leaf bases
Image of Helianthus annuus (Asteraceae) - stem - showing leaf bases
Helianthus annuus (Asteraceae) - inflorescence - ventral view of flower + perianth
Image of Helianthus annuus (Asteraceae) - inflorescence - ventral view of flower + perianth
Helianthus annuus (Asteraceae) - whole plant - in flower - general view
Image of Helianthus annuus (Asteraceae) - whole plant - in flower - general view
Helianthus annuus (Asteraceae) - leaf - basal or on lower stem
Image of Helianthus annuus (Asteraceae) - leaf - basal or on lower stem
Helianthus annuus (Asteraceae) - inflorescence - frontal view of flower
Image of Helianthus annuus (Asteraceae) - inflorescence - frontal view of flower
Helianthus annuus (Asteraceae) - leaf - basal or on lower stem
Image of Helianthus annuus (Asteraceae) - leaf - basal or on lower stem
Helianthus annuus (Asteraceae) - leaf - on upper stem
Image of Helianthus annuus (Asteraceae) - leaf - on upper stem
Helianthus annuus (Asteraceae) - inflorescence - unspecified
Image of Helianthus annuus (Asteraceae) - inflorescence - unspecified
Helianthus annuus (Asteraceae) - inflorescence - whole - unspecified
Image of Helianthus annuus (Asteraceae) - inflorescence - whole - unspecified
Genetic control of arbuscular mycorrhizal colonization by Rhizophagus intraradices in Helianthus annuus (L.)
<p>Plant symbiosis with arbuscular mycorrhizal (AM) fungi provides many benefits, including increased nutrient uptake, drought tolerance, and belowground pathogen resistance. To develop a better understanding of the genetic architecture of mycorrhizal symbiosis, we conducted a genome-wide association study (GWAS) of this plant-fungal interaction in cultivated sunflower. A diversity panel of cultivated sunflower (<i>Helianthus annuus </i>L.) was phenotyped for root colonization under inoculation with the AM fungus <i>Rhizophagus intraradices. </i>Using a mixed linear model approach with a high-density genetic map, we identified genomic regions that are likely associated with <i>R. intraradices </i>colonization in sunflower. Additionally, we used a set of twelve diverse lines to assess the effect that inoculation with <i>R. intraradices</i> has on dried shoot biomass and macronutrient uptake.<b> </b>Colonization amongst lines in the mapping panel ranged from 0-70% and was not correlated with mycorrhizal growth response, shoot phosphorus response, or shoot potassium response among the Core 12 lines. Association mapping yielded three single nucleotide polymorphisms (SNPs) that were significantly associated with <i>R. intraradices </i>colonization. This is the first study to use GWAS to identify genomic regions associated with AM colonization in an Asterid eudicot species. Three genes of interest identified from the regions containing these SNPs are likely related to plant defense.</p>
Genetic control of arbuscular mycorrhizal colonization by Rhizophagus intraradices in Helianthus annuus (L.)
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Data from: Genome wide association mapping of floral traits in cultivated sunflower (Helianthus annuus)
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Data from: Genetic diversity and population structure of wild sunflower (Helianthus annuus L.) in Argentina: reconstructing its invasion history
Studying the levels and patterns of genetic diversity of invasive populations is important to understand the evolutionary and ecological factors promoting invasions and for better designing preventive and control strategies. Wild sunflower (Helianthus annuus L.) is native to North America and was introduced, and has become invasive, in several countries, including Argentina (ARG). Here, using classical population genetic analyses and Approximate Bayesian Computation (ABC) modelling, we studied the invasion history of wild sunflower in ARG. We analyzed 115 individuals belonging to 15 populations from ARG (invasive range) and United States (US, native range) at 14 nuclear and three chloroplast simple sequence repeat markers along with 23 phenotypic variables. Populations from ARG showed similar levels of nuclear genetic diversity to US populations and higher genetic diversity in the chloroplast genome, indicating no severe genetic bottlenecks during the invasion process. Bayesian clustering analysis, based on nuclear markers, suggests the presence of three genetic clusters, all present in both US and ARG. Discriminant analysis of principal components (DAPC) detected an overall low population structure between central US and ARG populations but separated two invasive populations from the rest. ABC modelling supports multiple introductions but also a southward dispersal within ARG. Genetic and phenotypic data support the central US as a source of introduction while the source of secondary introductions could not be resolved. Finally, using genetic markers from the chloroplast genome, we found lower population structure in ARG when compared to US populations, suggesting a role for seed-mediated gene flow in Argentina.
Helianthus annuus L. (BR0000011715511)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Data from: Genetic diversity and population structure of wild sunflower (Helianthus annuus L.) in Argentina: reconstructing its invasion history
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Data from: Estimation of mating system parameters in an evolving gynodioecous population of cultivated sunflower (Helianthus annuus L.)
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First Development, Characterization and Experimental Validation of sunflower (Helianthus annuus L.) 44 K Agilent gene expression microarray
GEO Series GSE29390. Helianthus annuus. 8 samples. Type: Expression profiling by array.
Global transcriptome of Helianthus annuus, Beta vulgaris, Ricinus communis and Phaseolus vulgaris healthy plants and plant infected by the fungal pathogen Sclerotinia sclerotiorum (strain 1980)
GEO Series GSE138039. Beta vulgaris subsp. vulgaris; Helianthus annuus; Phaseolus vulgaris; Ricinus communis. 24 samples. Type: Expression profiling by high throughput sequencing.
Anti-hyperuricemic Potential of Abietic Acid: Identified from Helianthus annuus L. and Modulate Uric Acid in Human Embryonic Kidney Cells
GEO Series GSE198133. Homo sapiens. 12 samples. Type: Expression profiling by high throughput sequencing.
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Allen Brain Atlas
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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.