A5090451854- Plant-Microbe Interactions and Immunity
- Plant Pathogenic Bacteria Studies
- Plant Stress Responses and Tolerance
- Photosynthetic Processes and Mechanisms
- Plant Gene Expression Analysis
- Plant Molecular Biology Research
- Glutathione Transferases and Polymorphisms
- Genomics, phytochemicals, and oxidative stress
- Light effects on plants
- Plant Pathogens and Fungal Diseases
- Plant Reproductive Biology
- Fungal Plant Pathogen Control
- Plant Virus Research Studies
- Bacteriophages and microbial interactions
- Insect-Plant Interactions and Control
- Redox biology and oxidative stress
- Genomics and Phylogenetic Studies
- Plant Parasitism and Resistance
- Plant pathogens and resistance mechanisms
- Magnesium Oxide Properties and Applications
Universidad Andrés Bello
2018-2025
Millennium Institute for Integrative Biology
2018-2024
Millennium Science Initiative
2022-2024
Pontificia Universidad Católica de Chile
2014-2022
Center of Applied Ecology & Sustainability
2022
Salicylic acid (SA) is a key hormone that mediates gene transcriptional reprogramming in the context of defense response to stress. GRXC9, coding for CC-type glutaredoxin from Arabidopsis, an SA-responsive induced early and transiently by NPR1-independent pathway. Here, we address mechanism involved this SA-dependent pathway, using GRXC9 as model gene. We first established expression UVB exposure through validating its activation physiological stress condition. promoter analyses indicate SA...
Salicylic acid (SA) is a major defense signal in plants. In Arabidopsis (Arabidopsis thaliana), the chloroplast-localized isochorismate pathway main source of SA biosynthesis during abiotic stress or pathogen infections. first step pathway, enzyme ISOCHORISMATE SYNTHASE1 (ICS1) converts chorismate to isochorismate. An unknown subsequently SA. Here, we show that ICS1 protein levels increase UV-C stress. To identify proteins may play roles production by regulating ICS1, analyzed...
Abstract Plants possess a robust metabolic network for sensing and controlling reactive oxygen species (ROS) levels upon stress conditions. Evidence shown here supports role TGA class II transcription factors as critical regulators of genes ROS in the tolerance response to UV-B Arabidopsis. First, tga256 mutant plants showed reduced capacity scavenge H2O2 restrict oxidative damage UV-B, also methylviologen-induced photooxidative stress. The TGA2 transgene (tga256/TGA2 plants) complemented...
Plant glutathione S-transferases (GSTs) are glutathione-dependent enzymes with versatile functions, mainly related to detoxification of electrophilic xenobiotics and peroxides. The Arabidopsis (Arabidopsis thaliana) genome codes for 53 GSTs, divided into seven subclasses; however, understanding their precise functions is limited. A recent study showed that class II TGA transcription factors TGA2, TGA5, TGA6 essential tolerance UV-B-induced oxidative stress this associated an antioxidative...
Precise localization and trafficking of plant immune receptors are critical for their function. We identify the TNL-class nucleotide-binding leucine-rich repeat receptor (NLR) BURNOUT1 (BNT1) from Arabidopsis thaliana as localized to plastids, key organelles immunity. Alternative transcription start site usage generates two isoforms BNT1: BNT1.2, which is targeted plastid envelope via an N-terminal signal-anchored mechanism, BNT1.1, resides in cytoplasm. Moreover, BNT1.2 predominantly...
Salicylic acid (SA) is a hormone that modulates plant defenses by inducing changes in gene expression. The mechanisms control SA accumulation are essential for understanding the defensive process. TGA transcription factors from clade II Arabidopsis, which include proteins TGA2, TGA5, and TGA6, known to be key positive mediators of genes such as PR-1 induced application. However, unexpectedly, stress conditions induce accumulation, infection with avirulent pathogen P. syringae DC3000/AvrRPM1...
Auxin regulates diverse aspects of flower development in plants, such as differentiation the apical meristem, elongation stamen, and maturation anthers pollen. It is known that auxin accumulates pollen, but little information regarding biological relevance this tissue at different times available. In work, we manipulated amount free specifically developing using transgenic Arabidopsis lines express bacterial indole-3-acetic acid-lysine synthetase (iaaL) gene driven by a collection...
The remarkable capacity of the generalist aphid Myzus persicae to resist most classes pesticides, along with environmental and human health risks associated these agrochemicals, has necessitated development safer greener solutions control this agricultural pest. Oligogalacturonides (OGs) are pectin-derived molecules that can be isolated from fruit industry waste. OGs have been shown efficiently stimulate plant defenses against pathogens such as Pseudomonas syringae Botrytis cinerea. However,...
The possible toxicity effect of Mg–Al LDH nanosheets was evaluated on some agricultural target organisms. Overall, nanoparticle innocuity observed at the tested concentrations, showing a low risk for its implementation.
Abstract Salicylic acid (SA) is a central phytohormone that orchestrates genetic and physiological responses involving defense mechanisms against pathogens. This review presents cutting-edge research on emerging molecular players identified within the past 5 years contributing to SA accumulation. Furthermore, we delve into two relatively underexplored domains: dynamic production of throughout plant life cycle, with specific focus senescence, intricate interplay between SA, nutrition, its...
Abstract Plants possess a diversity of Reactive Oxygen Species (ROS)-processing enzymes involved in sensing and controlling ROS levels under basal stressful conditions. There is little information on the transcriptional regulators that control expression these ROS-processing enzymes, particularly at onset defense response to abiotic stress. Filling this gap, paper reports critical role for Arabidopsis TGA class II factors (TGA2, TGA5, TGA6) tolerance UV-B light photooxidative stress, by...
ABSTRACT Plant glutathione S -transferases (GSTs) are glutathione-dependent enzymes with versatile functions, mainly related to detoxification of electrophilic xenobiotics and peroxides. The Arabidopsis genome codes for 53 GSTs, divided into seven subclasses, however understanding their precise functions is limited. A recent study showed that class II TGA transcription factors TGA2, TGA5 TGA6 essential tolerance UV-B-induced oxidative stress this associated an antioxidative function...
Environmental fluctuations such as increased temperature, water availability, and air CO2 concentration triggered by climate change influence plant disease dynamics affecting hosts, pathogens, their interactions. Here, we describe a newly discovered Pseudomonas syringae strain found in natural population of Arabidopsis thaliana collected from the southwest France. This strain, called Psy RAYR-BL, is highly virulent on accessions, model accession Columbia 0, tobacco plants. Despite severe...
Abstract Numerous economically important crops are affected by the Pseudomonas syringae species worldwide. The current control method against this pathogen is use of copper compounds; however, it ineffective and limited. phages an alternative phytopathogens, which viruses that exclusively infect bacteria can overcome chemical limitations. This work describes isolation sequencing bacteriophage Psxφ15, a phage isolated from plum tree sample collected in Curacaví, Chile, using strain Ps15 as...
In Arabidopsis thaliana, the transcription factors WRKY7, WRKY11 and WRKY17 act as negative defence regulators against Pseudomonas syringae pv. tomato (Pst) DC3000. However, their coordinated regulation of gene expression has yet to be fully explored. this study, we conducted a transcriptomic analysis on triple mutant wrky7/11/17 in response Pst DC3000 at 0, 3 24 h post-inoculation (hpi). Our results suggest that early infection stages (0 hpi), significantly repress group genes involved...
Here, we report the genome sequence of P. syringae strain RAYR-BL, isolated from natural accessions Arabidopsis plants. The draft consists 5.85 Mbp assembled in 110 contigs. study RAYR-BL is a valuable tool to investigate molecular features plant-pathogen interaction under environmental conditions.