A5057751729- Sunflower and Safflower Cultivation
- Genetic diversity and population structure
- Plant pathogens and resistance mechanisms
- Genetic Mapping and Diversity in Plants and Animals
- Genetics and Plant Breeding
- Powdery Mildew Fungal Diseases
- Genomics and Phylogenetic Studies
- Chromosomal and Genetic Variations
- Genetic and Environmental Crop Studies
- Plant Gene Expression Analysis
- Forensic and Genetic Research
- Vector-borne infectious diseases
- Plant Virus Research Studies
- Plant Pathogens and Resistance
- Light effects on plants
- Plant Genetic and Mutation Studies
- Vector-Borne Animal Diseases
- Toxoplasma gondii Research Studies
- Legume Nitrogen Fixing Symbiosis
- Plant Molecular Biology Research
- Insect and Pesticide Research
- Neurological diseases and metabolism
- Plant and Fungal Species Descriptions
- Banana Cultivation and Research
- Genetic and phenotypic traits in livestock
Instituto de Agrobiotecnología del Litoral
2019-2025
Fundación Ciencias Exactas y Naturales
2013-2025
University of Buenos Aires
2013-2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2012-2024
National Agricultural Technology Institute
2013-2024
Instituto de Biotecnología y Biología Molecular
2021-2023
Agrobiotechnology Institute
2021
Instituto Nacional de Tecnologia
2021
National Institute of Industrial Technology
2007-2020
Pioneer Hi-Bred
2015
Argentina has a long tradition of sunflower breeding, and its germplasm is valuable genetic resource worldwide. However, knowledge the constitution variability levels Argentinean still scarce, rendering global map cultivated diversity incomplete. In this study, 42 microsatellite loci 384 single nucleotide polymorphisms (SNPs) were used to characterize first association mapping population for quantitative trait in sunflower, along with selection allied open-pollinated composite populations...
Abstract Background Sclerotinia Head Rot (SHR) is one of the most damaging diseases sunflower in Europe, Argentina, and USA, causing average yield reductions 10 to 20 %, but leading total production loss under favorable environmental conditions for pathogen. Association Mapping (AM) a promising choice Quantitative Trait Locus (QTL) mapping, as it detects relationships between phenotypic variation gene polymorphisms existing germplasm without development mapping populations. This article...
Abstract Background Association analysis is a powerful tool to identify gene loci that may contribute phenotypic variation. This includes the estimation of nucleotide diversity, assessment linkage disequilibrium structure (LD) and evaluation selection processes. Trait mapping by allele association requires high-density map, which could be obtained addition Single Nucleotide Polymorphisms (SNPs) short insertion and/or deletions (indels) SSR AFLP genetic maps. diversity randomly selected...
Sunflower Verticillium Wilt and Leaf Mottle (SVW), caused by dahliae Kleb., is a globally prevalent disease affecting sunflower production. In this study, we identified major quantitative trait locus (QTL) on chromosome 10 other genomic regions associated with SVW resistance integrating biparental association mapping in populations from the National Institute of Agricultural Technology. Nine replicated field trials were conducted highly infested V. reservoirs to assess incidence severity....
Archaeological maize specimens from Andean sites of southern South America, dating 400 to 1400 years before present, were tested for the presence ancient DNA and three microsatellite loci typed in that gave positive results. Genotypes also obtained 146 individuals corresponding modern landraces currently cultivated same areas 21 plants Argentinian lowland races. Sequence analysis cloned products revealed a high incidence substitutions appearing only one clone, with transitions prevalent. In...
Abstract Sclerotinia head rot (SHR), caused by the necrotrophic fungus sclerotiorum , is one of most devastating sunflower crop diseases. Despite its worldwide occurrence, genetic determinants plant resistance are still largely unknown. Here, we investigated Sclerotinia-sunflower pathosystem analysing temporal changes in gene expression susceptible and two tolerant inbred lines (IL) inoculated with pathogen under field conditions. Differential analysis showed little overlapping among ILs,...
Sunflower germplasm collections are valuable resources for broadening the genetic base of commercial hybrids and ameliorate risk climate events. Nowadays, most studied worldwide sunflower pre-breeding belong to INTA (Argentina), INRA (France), USDA-UBC (United States America–Canada). In this work, we assess amount distribution diversity (GD) available within between these estimate pattern global diversity. A mixed genotyping strategy was implemented, by combining proprietary...
Abstract Maize ( Zea mays ssp. L. ) landraces are traditional American crops with high genetic variability that conform a source of original alleles for conventional maize breeding. Northern Argentina, one the southernmost regions cultivation in Americas, harbours around 57 races traditionally grown two contrasting environmental conditions, namely Andean mountains Northwest and tropical grasslands Atlantic Forest Northeast. These encounter diverse threats to their diversity persistence...
Abstract The N orth of A rgentina is one the southernmost areas maize landrace cultivation. Two distinct centres diversity have been distinguished within this region: orthwestern ( NWA ), and ortheastern NEA ). Nowadays, landraces from area are faced with two main risks. On hand, significant structural functional changes modified rural environment boundaries cropland experiencing a rapid expansion at expense northern natural forests rangelands; on other, native gene pools increasingly...
Maize landraces from South America have traditionally been assigned to two main categories: Andean and Tropical Lowland germplasm. However, the genetic structure affiliations of lowland gene pools difficult assess due limited sampling lack comparative analysis. Here, we examined SSR Adh2 sequence variation in a diverse sample maize middle America, performed comprehensive integrative analysis population diversity including already published data archaeological extant specimens Americas....
Abstract Single sequence repeats ( SSR ) developed for S orghum bicolor were used to characterize the genetic distance of 46 different halepense J ohnsongrass) accessions from A rgentina some which have evolved toward glyphosate resistance. Since Johnsongrass is an allotetraploid and only one subgenome homologous cultivated sorghum, loci amplified up two alleles while others (presumably more conserved loci) four alleles. Twelve providing information 24 representative genome selected...
Open-pollinated (OPs) and composite populations (CPs) represent a valuable resource for sunflower breeding programmes. However, little is known about the levels distribution of genetic variation within each these populations. In this study, quantitative qualitative traits along with molecular markers were used to evaluate 14 from Instituto Nacional de Tecnología Agropecuaria (INTA) germplasm collection. These chosen historically important accessions that still play central role INTA...
Sclerotinia Head Rot (SHR), a disease caused by sclerotiorum, is one of the most limiting factors in sunflower production. In this study, we identified genomic loci associated with resistance to SHR support development assisted breeding strategies. We genotyped 114 Recombinant Inbred Lines (RILs) along their parental lines (PAC2 –partially resistant–and RHA266 –susceptible–) using 384 single nucleotide polymorphism (SNP) Illumina Oligo Pool Assay saturate genetic map. Subsequently, tested...
Diseases caused by necrotrophic fungi, such as the cosmopolitan Sclerotinia sclerotiorum and Diaporthe/Phomopsis complex, are among most destructive diseases of sunflower worldwide. The lack complete resistance combined with inefficiency chemical control makes assisted breeding best strategy for disease control. In this work, we present an integrated genome-wide association (GWA) study investigating response a diverse panel inbred lines to both pathogens. Phenotypic data head rot (SHR)...