A5057495933- Plant pathogens and resistance mechanisms
- Plant Pathogenic Bacteria Studies
- Plant Pathogens and Fungal Diseases
- Phytochemicals and Antioxidant Activities
- Phytochemistry and Biological Activities
- Protein Hydrolysis and Bioactive Peptides
- Essential Oils and Antimicrobial Activity
- Plant-Microbe Interactions and Immunity
- Natural product bioactivities and synthesis
- Synthesis and biological activity
- Genomics, phytochemicals, and oxidative stress
- Phytochemistry Medicinal Plant Applications
- Legume Nitrogen Fixing Symbiosis
- Insect Utilization and Effects
- Heavy metals in environment
- Morinda citrifolia extract uses
- Biochemical effects in animals
- Plant Disease Resistance and Genetics
- Aquaculture disease management and microbiota
- Environmental Toxicology and Ecotoxicology
- Bioactive Compounds and Antitumor Agents
- Phytochemical compounds biological activities
- Sesquiterpenes and Asteraceae Studies
- Bioactive natural compounds
- Neonatal Health and Biochemistry
University of Valparaíso
2015-2025
Valparaiso University
2018-2024
Viña del Mar University
2020-2023
International Center for Tropical Agriculture
1998-2019
Comisión Chilena de Energía Nuclear
1996
A polymerase chain reaction approach using degenerate primers that targeted the conserved domains of cloned plant disease resistance genes (R genes) was used to isolate a set 15 gene analogs (RGAs) from common bean (Phaseolus vulgaris). Eight different classes RGAs were obtained nucleotide binding site (NBS)-based and seven not previously described Toll/Interleukin-1 receptor-like (TIR)-based primers. Putative amino acid sequences significantly similar R contained additional motifs. The...
A major QTL for angular leaf spot resistance in the common bean accession G5686 was fine-mapped to a region containing 36 candidate genes. Markers have been developed marker-assisted selection. Common (Phaseolus vulgaris L.) is an important grain legume and essential protein source human nutrition developing countries. Angular (ALS) caused by pathogen Pseudocercospora griseola (Sacc.) Crous U. Braun responsible severe yield losses of up 80%. Breeding resistant cultivars most ecological...
This study investigated the bioactive potential of Pouteria splendens fruit through ultrasound-assisted extraction, analyzing peel and pulp. The pulp exhibited a higher phytochemical content, with 179.67 mg GAE/g d.w. 208.48 QE/g d.w., approximately 1.5 times more than in peel. Fifty phenolic compounds were identified by HPLC-MS, including four types acids, hydroxybenzoic (52%) hydroxycinnamic (42%) as two predominant ones, six flavonoids, flavonols (26.67%) flavones (23.33%) most prevalent....
Currently, much effort is being placed into obtaining extracts and/or essential oils from Cannabis sativa L. for specific therapeutic purposes or pharmacological compositions. These potential applications depend mainly on the phytochemical composition of oils, which in turn are determined by type C. and extraction method used to obtain oils. In this work, we have evaluated contents secondary metabolites, delta-9-tetrahydrocannabinol (THC), cannabidiol (CBD), addition total phenolic,...
Use of genetic resistance is the most practical and economic way to manage anthracnose common bean. Colletotrichum lindemuthianum, causal agent bean anthracnose, a highly variabile pathogen, there are no host genes that effective against all known races pathogen. To diversify sources resistance, we screened core collection secondary gene pool Phaseolus spp. interspecific lines derived from simple complex crosses primary genotypes for their anthracnose. High levels were observed in pool. None...
Ephedra chilensis K Presl, known locally as pingo-pingo, is a Chilean endemic plant used in traditional medicine an anti-inflammatory and other treatments. However, unlike for the species, there have been no reports on antioxidant cytotoxic effects of this plant. The present study aims to explore potential applications E. extract agent against vitro cancer cell lines relationship between activity.Total anthraquinone, flavonoid, phenolic contents, well activity (DPPH, FRAP, TRAP assays)...
Three anthraquinones, the well known emodin (3) and physcion (6) new anthraquinone glycoside emodin-8-β-D-idopyranoside (7) were isolated from leaves of Muehlenbeckia hastulata.The antioxidant activity these compounds was measured using DPPH assay; all three showed weaker than gallic acid.
Angular leaf spot (ALS), caused by the fungus Phaeoisariopsis griseola (Sacc.) Ferr., is one of most important diseases common bean ( Phaseolus vulgaris L.) in tropical and subtropical producing areas. The accession G 10474 has been widely resistant to P. , including pathotype 63‐63, virulent pathotypes characterized. objectives this study were determine inheritance angular resistance identify molecular markers linked gene 10474. Resistance 63‐63 was investigated F 2 populations derived from...
Abstract Different natural and synthetic chalcones have exhibited selective inhibition on monoamine oxidase B (MAO−B) activity, demonstrating potential interest for the treatment of neurodegenerative diseases. Herein we report synthesis seven new prenylated (7a‐g) obtained from compound 5 (4‐hydroxy‐3‐(3‐methylbut‐2‐en‐1‐yl)phenylethanone), previously isolated S. graveolens . Five these compounds exhibit high selectivity against MAO−B, with IC 50 values in low micromolar range. In addition,...
Abstract Background Standard cancer treatments show a lack of selectivity that has led to the search for new strategies against cancer. The selective elimination cells modulating redox environment, known as “selective oxycution”, emerged viable alternative. This research focuses on characterizing unexplored Escallonia genus plant extracts and evaluating their potential effects cancer’s balance, cytotoxicity, activation death pathways. Methods 36 were obtained from 4 different species ( E....
The genetic and virulence variability of 112 isolates Phaeoisariopsis griseola , collected from various locations in Central America, were studied using seven random amplified polymorphic DNA (RAPD) primers 12 common‐bean differential genotypes. Broad molecular diversity ( H = 0·92) among was found RAPD markers. Fifty pathotypes identified on bean genotypes, 29 which represented by only one isolate. Only 18 two or more countries. Pathotype 63‐63 the most virulent caused leaf spots all...
Abstract Common bacterial blight (CBB), caused by Xanthomonas axonopodis pv. phaseoli and X. var. fuscans is one of the most destructive diseases common bean worldwide. The interrelatedness, genetic diversity geographical distribution CBB pathogens was assessed using restriction fragment length polymorphism (RFLP) analysis polymerase chain reaction amplified 16S ribosomal gene, including 16S–23S intergenic spacer region repetitive element PCR (rep‐PCR). RFLP profiles generated endonucleases...
The Common Bean Angular Leaf Spot Resistance Gene Phg-2 was fine-mapped to a 409-Kbp region, and molecular markers for breeders were developed validated in field experiments. bean (Phaseolus vulgaris L.) is an important food legume Latin America, Asia Africa. It source of protein, carbohydrates micro-minerals, particularly smallholder farmers. productivity affected by angular leaf spot (ALS) disease caused the pathogenic fungus Pseudocercospora griseola, resulting significant yield losses,...
Currently, there is a greater interest in natural antioxidant compounds, specifically, those integrated to foods of animal origin, such as milk, eggs and fish. These present chemical compounds proteins, lipids, carotenoids, vitamins minerals, whose capacity has been studied. Peptides derived from proteins are with the highest activity. This review aimed at describing peptides egg Additionally, mechanisms action, their bioavailability nutritional implications each food will be discussed.