A5060315054- Plant Molecular Biology Research
- Photosynthetic Processes and Mechanisms
- Insect-Plant Interactions and Control
- Plant Reproductive Biology
- Light effects on plants
- Plant Parasitism and Resistance
- Plant Stress Responses and Tolerance
- Bryophyte Studies and Records
- Plant Virus Research Studies
- Biocrusts and Microbial Ecology
- Plant and animal studies
- CRISPR and Genetic Engineering
- Plant Gene Expression Analysis
- Insect and Pesticide Research
- Plant nutrient uptake and metabolism
- Lichen and fungal ecology
- Bioenergy crop production and management
- Parathyroid Disorders and Treatments
- Seed Germination and Physiology
- Plant tissue culture and regeneration
- Garlic and Onion Studies
- Mycorrhizal Fungi and Plant Interactions
- Plant Disease Resistance and Genetics
- Agriculture, Soil, Plant Science
- Transgenic Plants and Applications
Instituto de Agrobiotecnología del Litoral
2017-2025
National University of the Littoral
2014-2025
Universidad Nacional de La Plata
2023
Michigan State University
2011-2023
Consejo Nacional de Investigaciones Científicas y Técnicas
2008-2020
Howard Hughes Medical Institute
2013
University of Buenos Aires
2001-2011
Agricultural Plant Physiology and Ecology Research Institute
2008-2009
Fundación Ciencias Exactas y Naturales
2001-2002
Instituto de Recursos Naturales y Agrobiología de Sevilla
1994
Abstract Jasmonates (JAs) are plant hormones that regulate the balance between growth and responses to biotic abiotic stresses. Although recent studies have uncovered mechanisms for JA-induced in Arabidopsis thaliana, by which plants attenuate remain elusive. Here, we report a basic helix-loop-helix–type transcription factor, ABA-INDUCIBLE BHLH-TYPE TRANSCRIPTION FACTOR/JA-ASSOCIATED MYC2-LIKE1 (JAM1), acts as transcriptional repressor negatively regulates JA signaling. Gain-of-function...
For plants, the tradeoff between resource investment in defense and increased growth to out-compete neighbors creates an allocation dilemma. How plants resolve this dilemma, at mechanistic level, is unclear. We found that Arabidopsis produced attenuated phenotype under conditions of crowding when exposed far-red (FR) radiation, a light signal use detect proximity via photoreceptor phytochrome. This was detectable through standard bioassays measured Spodoptera frugiperda caterpillars. Two...
Plants respond to a reduction in the red/far-red ratio (R:FR) of light, caused by proximity other plants, initiating morphological changes that improve light capture. In Arabidopsis, this response (shade avoidance syndrome, SAS) is controlled phytochromes (particularly phyB), and dependent on TAA1 pathway auxin biosynthesis. However, when grown real canopies, we found phyB mutants deficient TAAI (sav3) still display robust SAS responses increased planting density leaf shading. The morphology...
The lipid-derived hormone jasmonoyl-L-Ile (JA-Ile) initiates large-scale changes in gene expression by stabilizing the interaction of JASMONATE ZIM domain (JAZ) repressors with F-box protein CORONATINE INSENSITIVE1 (COI1), which results JAZ degradation ubiquitin-proteasome pathway. Recent structural studies show that JAZ1 signal (degron) includes a short conserved LPIAR motif seals JA-Ile its binding pocket at COI1-JAZ interface. Here, we Arabidopsis thaliana JAZ8 lacks this and thus is...
Abstract Flavonoids and terpenoids are derived from distinct metabolic pathways but nevertheless serve complementary roles in mediating plant interactions with the environment. Here, we show that glandular trichomes of anthocyanin free (af) mutant cultivated tomato (Solanum lycopersicum) fail to accumulate both flavonoids terpenoids. This pleiotropic deficiency was associated loss resistance native populations coleopteran herbivores under field conditions. We demonstrate Af encodes an...
Abstract In open places, plants are exposed to higher fluence rates of photosynthetically active radiation and red far-red ratios than under the shade neighbor plants. High known increase stomata density. Here we show that high, compared low, also density in Arabidopsis (Arabidopsis thaliana). proportion phytochrome B (phyB) its form phyB mutant exhibited a constitutively low increased index (the ratio between epidermal cells number) level anphistomy (by increasing more intensively adaxial...
Abstract The plant hormone jasmonate (JA) activates gene expression by promoting ubiquitin-dependent degradation of ZIM domain (JAZ) transcriptional repressor proteins. A key feature all JAZ proteins is the highly conserved Jas motif, which mediates both and binding to transcription factor MYC2. Rapid genes in response JA thought attenuate responses, but little known about mechanisms newly synthesized exert repression presence hormone. Here, we show Arabidopsis (Arabidopsis thaliana) that...
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 (
Summary Plant transition to land required several regulatory adaptations. The mechanisms behind these changes remain unknown. Since the evolution of transcription factors ( TF s) families accompanied this transition, we studied HOMEODOMAIN LEUCINE ZIPPER HDZ ) family known control key developmental and environmental responses. We performed a phylogenetic bioinformatics analysis genes using transcriptomic genomic datasets from wide range Viridiplantae species. found evidence for existence in...
The symmetry of venation patterning in leaves is highly conserved within a plant species. Auxins are involved this process and also xylem vasculature development. Studying transgenic Arabidopsis plants ectopically expressing the sunflower transcription factor HaHB4, it was observed that there significant lateral-vein asymmetry formation compared to wild type plants. To unravel molecular mechanisms behind phenotype, genes differentially expressed these related auxin influx were...
Jasmonates (JAs) are plant hormones with crucial roles in development and stress resilience. They activate MYC transcription factors by mediating the proteolysis of inhibitors called JAZ proteins. In absence JA, proteins bind inhibit through assembly MYC-JAZ-Novel Interactor (NINJA)-TPL repressor complexes. However, NINJA predicted to be largely intrinsically unstructured, which has precluded their experimental structure determination. Through a combination biochemical, mutational,...
Arbuscular mycorrhizal fungi (AMF) are symbiotic that associate with the vast majority of terrestrial plants. Among non-vascular plants, while AMF associations well-documented in liverworts and hornworts, there is a broad consensus do not occur mosses. Here, we report presence living material mosses found Chaco Serrano (Tucumán, Argentina). We all characteristic structures when establishing an intimate connection two moss species Pottiaceae (Bryophyta). While Gertrudiella uncinicoma...
Marchantia polymorpha L. responds to environmental changes using a myriad set of physiological responses, some unique the lineage related lack vascular- and root-system. This study investigates response M. high doses anthracene analysing antioxidant enzymes their relationship with photosynthetic processes, as well transcriptomic response. We found an dose-dependent reducing plant biomass associated alteration ultrastructure 23.6% chloroplasts. Despite reduction in total thallus-chlorophyll...
Venation patterning is a taxonomic attribute for classification of plants and it also plays role in the interaction with environment. Despite its importance, molecular physiology controlling this aspect plant development still poorly understood. Auxin central modulating final vein network patterning. This addendum discusses recent findings on homeodomain-leucine zipper (HD-Zip) transcription factors regulation leaf venation Moreno-Piovano et al. reported that ectopic expression sunflower...
The perception and absorption of light by plants is a driving force in plant evolutionary history, as have evolved multiple photoreceptors to perceive different attributes including duration, intensity, direction quality. Plant interpret these signals from the environment mold architecture maximize foliar capture. As active sites production accumulation energy‐rich products, leaves are targets pests pathogens, which driven selection physiological processes protect tissues. In last ten years,...