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20 results for “Teosinte”
Adaptive introgression from maize has facilitated the establishment of teosinte as a noxious weed in Europe
<p>This is the total genotyoping matrix we used for the analyses.<br> The first line of the file contains the identifiers of the samples and each subsequent line the genotype at each SNP The first column contains the identifier of the SNPs.</p> <p>Genotype data for the 70 French teosintes was combined with published and available data for the following material: 40 accessions of Spanish teosintes (1), 314 accessions of parviglumis (2, 3), 332 accessions of mexicana (2, 3), 94 maize landraces from Meso- and Central-America (4) and 155 maize inbred lines from North-America and Europe (5)</p> <ol> <li> <p>Trtikova M, Lohn A, Binimelis R, Chapela I, Oehen B, Zemp N, Widmer A, Hilbeck A (2017) Teosinte in Europe – searching for the origin of a novel weed. Scientific Reports 7, 1560. DOI: https://doi.org/10.1038/s41598-017-01478-w</p> </li> <li> <p>Aguirre-Liguori JA, Tenaillon MI, Vásquez-Lobo A, Gaut BS, Jaramillo-Correa JP, Montes-Hernandez S, Souza V, Eguiarte LE (2017) Connecting genomic patterns of local adaptation and niche suitability in teosintes. Molecular Ecology 26, 4226-4240. DOI: https://doi.org/10.1111/mec.14203</p> </li> <li> <p>Pyhäjärvi T, Hufford MB, Mezmouk S, Ross-Ibarra J (2013) Complex patterns of local adaptation in teosinte. Genome Biology and Evolution 5, 1594–1609. DOI: https://doi.org/10.1093/gbe/evt109</p> </li> <li> <p>Takuno S, Ralph P, Swarts K, Elshire RJ, Glaubitz JC, Buckler ES, Hufford MB, Ross-Ibarra J (2015) Independent molecular basis of convergent highland adaptation in maize. Genetics 200, 1297–1312. DOI: https://doi.org/10.1534/genetics.115.17832</p> </li> <li> <p>Unterseer S, Pophaly SD, Peis R, Westermeier P, Mayer M, Seidel MA, Haberer G, Mayer KFX, Ordas B, Pausch H, Tellier A, Bauer , Schön CC (2016) A comprehensive study of the genomic differentiation between temperate Dent and Flint maize. Genome Biology 17, 137. DOI: https://doi.org/10.1186/s13059-016-1009-x</p> </li> </ol>
Fig. 3 in Diversity and density-dependence relationship between hymenopteran egg parasitoids and the corn leafopper (Hemiptera: Cicadellidae) in maize agroecosystem vs. teosinte wild habitat
Fig. 3. Relationship between the number of exposed Dalbulus maidis eggs and number of Anagrus virlai within the crop maize habitat on (A) maize sentinel plants, and (B) teosinte sentinel plants.
Fig. 1 in Diversity and density-dependence relationship between hymenopteran egg parasitoids and the corn leafopper (Hemiptera: Cicadellidae) in maize agroecosystem vs. teosinte wild habitat
Fig. 1. Relationship between the number of exposed Dalbulus maidis eggs and number of adult parasitoids (of any species) found in the crop maize habitat on (A) maize sentinel plants, and (B) teosinte sentinel plants.
Genomic diversity and population structure of teosintes (Zea spp.) and its conservation implications
<p>The wild species of the genus <em>Zea</em> commonly named teosintes, comprise nine different taxa, distributed from northern Mexico to Costa Rica. Although this genus of plants has been extensively studied from a morphological, ecogeographical and genetic point of view, most contributions have been limited to the study of a few populations and taxa. To understand the great variability that exists between and within teosinte species, it is necessary to include the vast majority of known populations. In this context, the objective of this work was to evaluate the diversity and genomic structure of 276 teosinte populations. Molecular analyzes were performed with 3,604 plants and with data from 33,929 SNPs. The levels of genetic diversity by taxonomic group show a marked difference between species, races and sections, where the highest values of genomic diversity were found in ssp. <em>parviglumis</em> and ssp. <em>mexicana</em>. The lower values were obtained for the <em>Luxuriantes</em> section as well as ssp. <em>huehuetenagensis</em> of the section <em>Zea</em>. The results of the structure show that there is a great genetic differentiation in all the taxonomic groups considered. For ssp. <em>parviglumis</em> and <em>mexicana</em>, which are the taxa with the largest number of populations, a marked genomic differentiation was found that is consistent with their geographic distribution patterns. These results showed a loss of diversity in several teosinte populations, making a strong case for further collection, and ex situ and in situ conservation. Also, this study highlights the importance of integrating genomic diversity and structure for the applications of conservation and management.</p>
Genomic diversity and population structure of teosintes (Zea spp.) and its conservation implications
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Data from: Complex patterns of local adaptation in Teosinte
Populations of widely distributed species encounter and must adapt to local environmental conditions. However, comprehensive characterization of the genetic basis of adaptation is demanding, requiring genome wide genotype data, multiple sampled populations, and an understanding of population structure and potential selection pressures. Here, we used SNP genotyping and data on numerous environmental variables to describe the genetic basis of local adaptation in 21 populations of teosinte, the wild ancestor of maize. We found complex hierarchical genetic structure created by altitude, dispersal events and admixture among subspecies that complicated identification of locally beneficial alleles. Patterns of linkage disequilibrium revealed four large inversion polymorphisms showing clinal patterns of frequency. Population differentiation and environmental correlations suggest that both inversions and intergenic polymorphisms are involved in local adaptation.
Data from: Connecting genomic patterns of local adaptation and niche suitability in teosintes
The central-abundance hypothesis predicts that local adaptation is a function of the distance to the center of a species' geographic range. To test this hypothesis, we gathered genomic diversity data from 49 populations, 646 individuals and 33,464 SNPs of two wild relatives of maize, the teosintes Zea mays ssp. parviglumis and Zea. mays. ssp. mexicana. We examined the association between the distance to their climatic and geographic centroids and the enrichment of SNPs bearing signals of adaptation. We identified candidate adaptive SNPs in each population by combining neutrality tests and cline analyzes. By applying linear regression models, we found that the number of candidate SNPs is positively associated with niche suitability, while genetic diversity is reduced at the limits of the geographic distribution. Our results suggest that overall, populations located at the limit of the species' niches are adapting locally. We argue that local adaptation to this limit could initiate ecological speciation processes and facilitate adaptation to global change.
Data from: Characterization of the teosinte transcriptome reveals adaptive sequence divergence during maize domestication
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Data from: Complex patterns of local adaptation in Teosinte
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Data from: A gene for genetic background in Zea mays: fine-mapping enhancer of teosinte branched1.2 to a YABBY class transcription factor
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Data from: Connecting genomic patterns of local adaptation and niche suitability in teosintes
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Data from: Polymorphism pattern at a Miniature Inverted-repeat Transposable Element locus downstream of the domestication gene Teosinte-branched1 in wild and domesticated pearl millet
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Teosinte Pollen Drive guides maize domestication and evolution by RNA interference [small RNA-seq]
GEO Series GSE234924. Zea mays subsp. mays x Zea mays subsp. mexicana. 20 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Teosinte Pollen Drive guides maize domestication and evolution by RNA interference [WGS]
GEO Series GSE234921. Zea mays subsp. mays x Zea mays subsp. mexicana. 20 samples. Type: Other.
MicroRNAs differential expression under submergence, drought and alternated stress in maize and teosinte
GEO Series GSE155050. Zea mays subsp. parviglumis; Zea mays subsp. mays. 8 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Teosinte Pollen Drive guides maize domestication and evolution by RNA interference [dna_single_pollen]
GEO Series GSE234920. Zea mays subsp. mays x Zea mays subsp. mexicana. 377 samples. Type: Other.
Data from: Teosinte in Europe – searching for the origin of a novel weed
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Teosinte Pollen Drive guides maize domestication and evolution by RNA interference [iPARE-seq]
GEO Series GSE234922. Zea mays subsp. mays x Zea mays subsp. mexicana. 6 samples. Type: Other.
Teosinte Pollen Drive guides maize domestication and evolution by RNA interference
GEO Series GSE234925. Zea mays subsp. mays x Zea mays subsp. mexicana. 433 samples. Type: Other; Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing.
Teosinte Pollen Drive guides maize domestication and evolution by RNA interference [RNA-seq]]
GEO Series GSE234923. Zea mays subsp. mays x Zea mays subsp. mexicana. 10 samples. Type: Expression profiling by high throughput sequencing.
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