A5018009614- Plant Molecular Biology Research
- Plant Stress Responses and Tolerance
- Plant nutrient uptake and metabolism
- Chromosomal and Genetic Variations
- Irrigation Practices and Water Management
- Plant Reproductive Biology
- Glycosylation and Glycoproteins Research
- Photosynthetic Processes and Mechanisms
- Plant Gene Expression Analysis
- Animal Nutrition and Physiology
- Carbohydrate Chemistry and Synthesis
- Genomics and Phylogenetic Studies
- Growth and nutrition in plants
- Soil and Water Nutrient Dynamics
- Soil Carbon and Nitrogen Dynamics
- Light effects on plants
- ATP Synthase and ATPases Research
- Plant Virus Research Studies
- Plant Disease Resistance and Genetics
- Plant Physiology and Cultivation Studies
- CRISPR and Genetic Engineering
- Wastewater Treatment and Reuse
- Plant Genetic and Mutation Studies
- Animal Behavior and Welfare Studies
- Livestock and Poultry Management
Instituto de Agrobiotecnología del Litoral
2015-2025
National University of the Littoral
2013-2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2008-2025
Centro Científico Tecnológico - Santa Fe
2019
Universidad Politécnica de Madrid
2006-2016
University of Cologne
2016
European Telecommunications Standards Institute
2012
Universidad Nacional de Córdoba
1971-2011
Exact Sciences (United States)
1977
Summary Hahb‐4 is a member of the Helianthus annuus (sunflower) subfamily I HD‐Zip proteins that transcriptionally regulated by water availability and abscisic acid. Transgenic Arabidopsis thaliana plants overexpressing this transcription factor (TF) exhibit characteristic phenotype includes strong tolerance to stress. Here we show TF new component ethylene signalling pathways, it induces marked delay in senescence. Plants Hahb ‐4 are less sensitive external ethylene, enter senescence...
Summary We studied the role of Arabidopsis thaliana TCP15, a member TEOSINTE BRANCHED1‐CYCLOIDEA‐PCF ( TCP ) transcription factor family, in gynoecium development. Plants that express TCP15 from 35S CaMV promoter 35S:TCP15 develop flowers with defects carpel fusion and reduced number stigmatic papillae. In contrast, expression fused to repressor domain its own causes development outgrowths topped papillae replum. plants show lower levels auxin indoleacetic acid reporter DR5 biosynthesis...
Summary Plants deal with cold temperatures via different signal transduction pathways. The HD‐Zip I homologous transcription factors HaHB1 from sunflower and AtHB13 Arabidopsis were identified as playing a key role in such response. expression patterns of both genes analyzed indicating an up‐regulation by low temperatures. When these constitutively expressed Arabidopsis, the transgenic plants showed similar phenotypes including cell membrane stabilization under freezing treatments tolerance....
Gangliosides bound to subcellular particles from rat brain were labelled by incubation of the (i) with CMP-N[(3)H]-acetylneuraminic acid and (ii) simultaneously, UDP-N-acetyl-[(14)C(1)]galactosamine or UDP-[U-(14)C]-galactose. Analysis gangliosides showed that in (i), (a) labelling was mostly neuraminidase-labile sialyl groups, (b) rigid relationships exist between enzymes acceptors; are not free interact all specific substrates present preparation (c) precursor trisialoganglioside major...
Summary Arabidopsis thaliana HomeoBox 1 (At HB 1) is a homeodomain‐leucine zipper transcription factor described as transcriptional activator with unknown function. Its role in A. development was investigated. At expression analyzed transgenic plants bearing its promoter region fused to reporter genes. Knock‐down mutant and overexpressor plant phenotypes were different photoperiod regimes. mainly expressed hypocotyls roots up‐regulated seedlings grown under short‐day photoperiod. knock‐down...
Soybean yield is limited primarily by abiotic constraints. No transgenic soybean with improved stress tolerance commercially available. We transformed plants genetic constructs able to express the sunflower transcription factor HaHB4, which confers drought Arabidopsis and wheat. One line (b10H) carrying promoter was chosen among three independent lines because it exhibited best performance in seed yield, evaluated greenhouse 27 field trials different environments Argentina. In experiments,...
Abstract Background Plant HD-Zip transcription factors are modular proteins in which a homeodomain is associated to leucine zipper. Of the four subfamilies they divided, tested members from subfamily I bind vitro same pseudopalindromic sequence CAAT(A/T)ATTG and among them, several exhibit similar expression patterns. However, most experiments were over or ectopically expressed under control of constitutive promoter 35S CaMV resulted transgenic plants with clearly different phenotypes....
1. After injection of [6-(3)H]glucosamine into 8-day-old rats it was found that all the major brain gangliosides and their sialyl groups were labelled at essentially same rate, except hematoside, which least labelled. In 18-day-old two with (2-->8)-sialyl linkage, more than Tay-Sachs ganglioside, other respective groups. 2. No difference in any cases studied between specific radioactivities neuraminidase-resistant -labile belonging to ganglioside. The for galactosyl proximal distal ceramide...
Adaptation of a complex trait often requires the accumulation many modifications to finely tune its underpinning molecular components novel environmental requirements. The investigation cis-acting regulatory can be used pinpoint systems partaking in such adaptations. Here, we identify with help an interspecific crossing scheme designed distinguish derived each two sister species, Arabidopsis halleri and A. lyrata. Allele-specific expression levels were assessed three conditions chosen...
Abstract Trichomes and the cuticle are two specialized structures of aerial epidermis that important for plant organ development interaction with environment. In this study, we report Arabidopsis thaliana plants affected in function class I TEOSINTE BRANCHED 1, CYCLOIDEA, PCF (TCP) transcription factors TCP14 TCP15 show overbranched trichomes leaves stems increased permeability. We found regulates expression MYB106, a MIXTA-like factor involved epidermal cell development, overexpression...
Transposable elements (TEs) are extremely abundant in complex plant genomes. siRNAs of 24 nucleotides length control transposon activity a process that involves de novo methylation targeted loci. Usually, these epigenetic modifications trigger nucleosome condensation and permanent silencing the affected Here, we show TE-derived inverted repeat (IR) element, inserted near sunflower HaWRKY6 locus, dynamically regulates expression gene by altering chromatin topology. The transcripts this IR...
In plants, small RNAs are loaded into ARGONAUTE (AGO) proteins to fulfill their regulatory functions. MicroRNAs (miRNAs), one of the most abundant classes endogenous RNAs, preferentially AGO1. Such loading, long believed happen exclusively in cytoplasm, was recently proposed also occur nucleus. Here, we identified CONSTITUTIVE ALTERATIONS IN THE SMALL RNAS PATHWAYS9 (CARP9), a nuclear-localized, intrinsically disordered protein, as factor promoting miRNA activity Arabidopsis (
Transposons are mobile elements that commonly silenced to protect eukaryotic genome integrity. In plants, transposable element (TE)-derived inverted repeats (IRs) found near genes, where they affect host gene expression. However, the molecular mechanisms of such regulation unclear in most cases. Expression these IRs is associated with production 24-nt small RNAs, methylation IRs, and drastic changes local 3D chromatin organization. Notably, many differ between Arabidopsis thaliana...
1. Treatment of rat brain microsomal membranes with a neuraminidase preparation from Clostridium perfringens resulted in an almost complete conversion polysialogangliosides into monosialogangliosides. 2. Neuraminidase treatment the did not increase incorporation N-[3H]acetylneuraminic acid CMP-N-[3H]acetylneuraminic gangliosidic fraction, indicating that monosialoganglioside is acceptor N-acetylneuraminic these only if, addition to having right chemical structure, it proper position,...