A5064393949- Fermentation and Sensory Analysis
- Essential Oils and Antimicrobial Activity
- Horticultural and Viticultural Research
- Plant Pathogens and Fungal Diseases
- Fungal and yeast genetics research
- Aquaculture disease management and microbiota
- RNA and protein synthesis mechanisms
- Plant biochemistry and biosynthesis
- Genomics and Phylogenetic Studies
- Machine Learning in Bioinformatics
- Growth and nutrition in plants
- Phytochemicals and Antioxidant Activities
- Yeasts and Rust Fungi Studies
- Genetic diversity and population structure
- Vibrio bacteria research studies
- Phytochemistry and Biological Activities
- Ethnobotanical and Medicinal Plants Studies
- Plant tissue culture and regeneration
- Insect Pest Control Strategies
- Bacterial Genetics and Biotechnology
- Bee Products Chemical Analysis
- Plant-Microbe Interactions and Immunity
- Sensory Analysis and Statistical Methods
- Aquaculture Nutrition and Growth
- Probiotics and Fermented Foods
Universidade de Caxias do Sul
2015-2024
Czech Academy of Sciences, Institute of Biotechnology
2012-2023
Universidade Federal do Rio Grande do Sul
2020
Instituto de Biotecnología de León
2008-2013
Abstract The Brazilian Atlantic Forest is one of the world's major biodiversity hotspots and threatened by a severe habitat loss. Yet little known about processes that originated its remarkable richness endemic species. Here we present results large‐scale survey genetic variation at mitochondrial cytochrome b gene pitviper, jararaca lancehead ( Bothrops ), two closely related insular species insularis alcatraz this region. Phylogenetic network analyses revealed existence well‐supported...
ABSTRACT Nematicidal activity of 22 monoterpenoids were evaluated in vitro and pot experiments. Twenty the twenty-two significantly reduced hatching, 11 J2 mobility root-knot nematode Meloidogyne incognita at a concentration 250 mg/liter. In general, compounds with hydroxyl carbonyl groups exhibited higher nematicidal than other terpenoids. Borneol, carveol, citral, geraniol, alpha-terpineol showed highest among tested monoterpenoids. These dose dependent effect, drastically eggs hatching...
The increased demand for pesticide-free foods has also the search healthier and environmentally friendly alternatives in agriculture. Essential oils are known to possess natural antifungal properties, becoming a reliable alternative commercial fungicides, especially postharvest decay control. However, essential volatile photodegradable, which reduces their long-term activities. This work presents development of lemongrass oil-containing poly(lactic acid) nanocapsules. They have shown vitro...
Endophytic fungi were isolated from leaves, flowers and fruit of healthy apple trees (Malus domestica , Borkh.) growing in southern Brazilian orchards under three different cultivation systems (conventional, integrated organic), during two vegetative cycles. The greatest total number endophytic isolates was obtained the organic when compared to conventional systems. Filamentous genera Colletotrichum Xylaria Botryosphaeria most frequent ones representative yeast Sporobolomyces Rhodotorula...
Aeromonas were isolated from 27 (6.6%) of 408 patients admitted with acute gastroenteritis in two hospitals at Rio Grande do Sul, Brazil. Isolates classified as A. hydrophila (51.8%), caviae (40.8%), and veronii biotype sobria (7.4%). The highest prevalence associated infections occurred lactants children. Virulence genes (aerA -aerolysin/hemolysin, ahpA -serine-protease, satA - glycerophospholipid-cholesterol acyltransferase, lipA -lipase, ahyB -elastase) virulence factors (hemolytic,...
Abstract Ripe rot is one of the most important bunch diseases grapes in highlands southern Brazil and a matter concern for winegrowers. Sixty‐one strains isolated from berries Vitis labrusca V . vinifera varieties with symptoms were classified by phylogenetic analysis sequences β‐tubulin, glyceraldehyde‐3‐phosphate dehydrogenase, D1/D2 domain 28S rDNA, rDNA internal transcribed spacer. They also characterized morphology, their pathogenicity was evaluated. The combined molecular data allowed...
Canine parvovirus type 2 (CPV-2) is a relevant pathogen for dogs and causes severe disease in carnivore species. CPV-2 reached pandemic proportions after the 1970s with worldwide dissemination, generating antigenic genetic variants (CPV-2a, CPV-2b, CPV-2c) different pathobiology comparison original CPV-2. The present study aimed to assess current global molecular phylogeny analyze diversity temporal spreading of from Brazil. A total 284 whole-genome sequences (WGS) 684 VP2 complete genes...
The present work aimed to analyze the alkaloid content of ethanolic extract Tabernaemontana catharinensis (Apocynaceae family) and its fractions as well evaluate their antioxidant anticholinesterasic activities. analyses T. by mass spectrometry allowed identifying presence alkaloids 16‐epi‐affinine, coronaridine‐hydroxyindolenine, voachalotine, voacristine‐hydroxyindolenine, 12‐methoxy‐n‐methyl‐voachalotine, an with m/z 385.21 whose spectrum suggests a derivative voacristine or voacangine....
Abstract BACKGROUND Essential oils (EOs) are volatile natural compounds produced by plant secondary metabolism, and some of them exhibit antimicrobial activity. The objective the present study was to determine chemical composition EOs Eucalyptus staigeriana globulus , their effect in vitro vivo against Botrytis cinerea Colletotrichum acutatum most important fungal rot diseases grapes. Moreover, grapes collected from field experiments were used evaluate impact alternative control on alcoholic...
Plasmoparaviticola, the agent of grapevine downy mildew, causes enormous economic damage, and its control is primarily based on use synthetic fungicides. The European Union policies promote reducing reliance plant protection products. Biocontrol agents such as Trichoderma spp. constitute a resource for development biopesticides. produce secondary metabolites peptaibols, but poor water solubility peptaibols limits their practical agrochemicals. To identify new potential bio-inspired molecules...
Nosocomial infections constitute an important problem in hospitals, intensive care units (ICU) having the highest incidence of this type infection. Staphylococci, especially Staphylococcus epidermidis and aureus, are among most microorganisms associated with nosocomial infections. S. is a common skin resident, can be introduced into clinical environment by patients hospital staff. The situation hospitals aggravated emergence multiresistant strains. We evaluated 98 isolates collected at...
Twenty-seven accessions of Lippia alba Mill. collected in Rio Grande do Sul state, Brazil, were analysed by ISSR and RAPD markers to evaluate their genetic variability relationships. Six primers four generated 120 amplified fragments, most which polymorphics. The overall among was very high when compared with other plant species. hierarchical analysis molecular data (UPGMA) showed low relationship between accessions, no grouping the same chemotype. Canonical functions allowed identifying...
In this study, we performed an analytical and sensorial comparison between sparkling wines produced by the Traditional Charmat methods using same base wine, yeast strain, inoculum, aged on lees during periods. The absence of evident differences in results analyses physicochemical volatile compounds was confirmed sensory analysis. general, tests, more evaluators could identify first stages which were performed. As ageing time increase, fewer differentiate wines. It observed that than half not...
Axillary buds from adult field-grown plants of Lavandula dentata L. were used to evaluate the effect growth regulators and culture media on in vitro shoot proliferation growth. The highest multiplication rate was obtained using Murashige Skoog (MS) medium supplemented with a combination 2.2 μM benzyladenine 2.5 indole-3-butyric acid. best condition for rooting MS plus naphthaleneacetic Rooted plantlets successfully transferred soil. Short-term derived (6 month) exhibited normal development,...