A5063762056- Marine and coastal plant biology
- Plant Stress Responses and Tolerance
- Seaweed-derived Bioactive Compounds
- Heavy metals in environment
- Plant Growth Enhancement Techniques
- RNA and protein synthesis mechanisms
- Algal biology and biofuel production
- Environmental Toxicology and Ecotoxicology
- Photosynthetic Processes and Mechanisms
- Selenium in Biological Systems
- Plant-Microbe Interactions and Immunity
- Geochemistry and Elemental Analysis
- RNA Research and Splicing
- Fluoride Effects and Removal
- Genomics and Phylogenetic Studies
- Ion Channels and Receptors
- Plant Gene Expression Analysis
- Mitochondrial Function and Pathology
- Fungal and yeast genetics research
- Aging, Health, and Disability
- Mercury impact and mitigation studies
- Polysaccharides and Plant Cell Walls
- Nitrogen and Sulfur Effects on Brassica
- Marine Biology and Ecology Research
- Moringa oleifera research and applications
Universidad de Santiago de Chile
2015-2024
Universidad Bernardo O'Higgins
2016-2018
Pontificia Universidad Católica de Chile
1987-1996
Centre de Génétique Moléculaire
1992
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
1990
Laboratoire de Biologie et Pharmacologie Appliquée
1988
CEA Paris-Saclay
1986
It is now well established that plant cell wall oligosaccharides can stimulate or inhibit growth and development in plants. In addition, it has been determined seaweed (marine algae) polysaccharides derived enhance particular, oligo-alginates obtained by depolymerization of alginates from brown seaweeds increase different plants enhancing nitrogen assimilation basal metabolism. Interestingly, also marine fresh water green microalgae, increasing the content fatty acids. On other hand,...
Abstract To analyze the copper-induced cross talk among calcium, nitric oxide (NO), and hydrogen peroxide (H2O2) calcium-dependent activation of gene expression, marine alga Ulva compressa was treated with inhibitors calcium channels, ned-19, ryanodine, xestospongin C, chloroplasts mitochondrial electron transport chains, 3-(3,4-dichlorophenyl)-1,1-dimethylurea antimycin A, pyruvate dehydrogenase, moniliformin, calmodulins, N-(6-aminohexyl)-5-chloro-1-naphtalene sulfonamide, protein kinases,...
ABSTRACT Enteromorpha compressa is the dominant species in coastal areas of northern Chile receiving copper mine wastes. Copper remains as main heavy metal these waters and it accumulated E. growing at impacted sites. Algae from sites showed higher levels lipoperoxides than non‐impacted sites, which suggests occurrence cellular damage resulting oxidative stress. The strong activation ascorbate peroxidase detected this study probably occurs order to buffer Unexpectedly, activity glutathione...
Scytosiphon lomentaria (Lingb.) Link. (Phaeophyceae) is one of the two dominant seaweeds in a coastal area northern Chile affected by copper mine wastes, where concentration water and algal tissues remains higher than nonimpacted sites. Copper‐loaded plants develop oxidative stress, as demonstrated increased levels reactive oxygen species lipoperoxides. This stress was associated with 1) an enhanced activity antioxidant enzymes catalase, glutathione peroxidase, ascorbate monodehydroascorbate...
In order to analyse copper-induced calcium release and (reactive oxygen species) ROS accumulation their role in antioxidant defense enzymes activation, the marine alga Ulva compressa was exposed 10 µM copper for 7 d. The level of calcium, extracellular hydrogen peroxide (eHP), intracellular (iHP) superoxide anions (SA) as well activities ascorbate peroxidase (AP), glutathione reductase (GR), glutathione-S-transferase (GST), phenylalanine ammonia lyase (PAL) lipoxygenase (LOX) were...
In order to analyze the effect of cadmium in Ulva compressa (Chlorophyta), alga was cultivated with 10, 25, and 50 μM for 7 days, level intracellular determined. Intracellular showed an increase on day 1, no change until 5, 7. Then, 10 hydrogen peroxide, superoxide anions, lipoperoxides; activities antioxidant enzymes ascorbate peroxidase (AP), dehydroascorbate reductase (DHAR), glutathione (GR); (GSH) (ASC); phytochelatins (PCs) transcripts encoding metallothioneins (UcMTs) levels were The...
Eucalyptus globulus (Myrtaceae) originated in Australia and has been introduced countries with temperate weather order to obtain wood for cellulose extraction building purposes. In this work, we analyzed the potential stimulation of growth height trunk diameter as well content holo-cellulose, α-cellulose (long chains), essential oils polyphenolic compounds (PPCs) E. trees treated oligo-carrageenans (OCs) kappa, lambda iota, at 1 mg mL⁻¹, once a week, four times total then cultivated three...
Abstract Background The marine alga Ulva compressa is the dominant species in copper-polluted coastal areas northern Chile. It has been shown that tolerates micromolar concentrations of copper and accumulates at intracellular level. Transcriptomic analyses were performed using total RNA cultivated with 10 μ M for 0, 1, 3 5 days RNA-seq order to identify processes involved tolerance. Results levels transcripts encoding proteins belonging Light Harvesting Complex II (LHCII), photosystem...