A5101512530- Phytoplasmas and Hemiptera pathogens
- Animal Nutrition and Physiology
- Cocoa and Sweet Potato Agronomy
- Plant Pathogens and Fungal Diseases
- Plant Pathogenic Bacteria Studies
- Polysaccharides and Plant Cell Walls
- Microbial Metabolites in Food Biotechnology
- Insect and Pesticide Research
- Mycotoxins in Agriculture and Food
- Trace Elements in Health
- Zebrafish Biomedical Research Applications
- Hymenoptera taxonomy and phylogeny
- Horticultural and Viticultural Research
- Studies on Chitinases and Chitosanases
- Mycorrhizal Fungi and Plant Interactions
- Dye analysis and toxicity
- Aquaculture Nutrition and Growth
- Phytase and its Applications
- Selenium in Biological Systems
- Pineapple and bromelain studies
- Silicon Effects in Agriculture
- Polysaccharides Composition and Applications
- Neuroscience and Neuropharmacology Research
- Fungal Biology and Applications
- Algal biology and biofuel production
Universidade de São Paulo
2000-2024
University of Florida
2003-2010
Southwest Florida Research
2010
Thermo Fisher Scientific (United States)
2009
Universidade Federal de Lavras
2004
Universidade Federal do Paraná
1998
Purdue University West Lafayette
1994
The availability of the genome sequence bacterial plant pathogen Xylella fastidiosa, causal agent citrus variegated chlorosis, is accelerating important investigations concerning its pathogenicity. Plant vessel occlusion critical for symptom development. objective present study was to search information that would help explain adhesion X. fastidiosa cells xylem. Scanning electron microscopy revealed may occur without fastidium gum, an exopolysaccharide produced by and X-ray microanalysis...
Abstract Leaf petioles of plum, coffee and sweet orange were examined using scanning electron microscopy (SEM). The presence Xylella fastidiosa in the samples was confirmed by polymerase chain reaction gel electrophoresis. number vessels colonized X. determined SEM petiole areas that transversally sectioned under liquid nitrogen. percentage higher than plum citrus whether trees exhibiting mild symptoms (MS) or severe (SS). varied from 10.9 to 38.0% (SS), 26 51.6% 8 11.8% (SS) for citrus,...
The objective of this study was to evaluate the effect different trace mineral supplementation sources in diet broiler breeders on their performance and progenies. In total, 128 Cobb 500 were distributed according a completely randomized experimental design 2 treatments. control group fed supplemented with inorganic minerals (ITM), while other reduced levels organic form. Eggs collected when 35, 47, 53 wk old. Their progeny (450 hatchlings) divided source from maternal diet, creating...
Abstract The number of colony forming units (CFU) inside xylem vessels leaf petioles were evaluated in tobacco by scanning electron microscopy followed an image analysis. Symptom expression Nicotiana tabacum , cultivars TNN, Havana and RP1, correlated with the presence bacteria petiole vessels. symptom terms per gram colonized tissue percentage No statistical differences found among varieties tested. expressed most intense symptoms, best indicating a better experimental host. We also...
Vitamins play an essential role in broiler nutrition. They are fundamental for normal metabolic and physiological process, their requirements poultry not fixed can be affected by multiple factors. In contrast, mycotoxins a challenging issue because they hinder performance the immune system. Vitamin supplementation above minimum would permit improvement productive potential, health, bone meat quality situation of mycotoxin challenge. The objective this study was to determine influence optimum...
Considering the market availability of new commercial layer strains with distinct characteristics and behaviors, studies to update their nutritional requirements evaluate need adopt management practices, such as beak trimming, are needed. The objective present study was effects dietary metabolizable energy (ME) levels trimming on live performance, egg quality, economics layers. A total 640 Novogen White layers were distributed according a randomized experimental design in 5 × 2 factorial...
Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – 30,
Abstract The appressoria formation of Colletotrichum graminicola was monitored by scanning electron microscopy (SEM) coupled with an X Ray microanalysis system (EDS - Oxford Instrument LINK ISIS). Recently formed appressoria, infection structure plant pathogenic fungi, firmly glues itself to artificial surface (polystyrene) as a consequence the production adhesive material (AM). nature this already demonstrated be mainly constituted glycoprotein (Sugui et al, PMPP, 1998). objective work...
Background: Exogenous enzyme supplementation is an effective and cost-saving mechanism for increasing the availability of dietary nutrients by digestion reducing excretion. Objective: To evaluate effects phytase on performance, egg quality, economic parameters in commercial laying hens fed reduced-nutrient diets from 70 weeks age. Methods: Novogen White® (n=256) were randomly allocated to four treatment groups, with eight replicates each group: PC (positive control): conventional diet not...
Abstract This trial evaluated the effects of activated silicon dioxide on sows’ diets and its piglets’ performance. Eighty PIC sows from different delivery orders (3rd, 4th, 5h, 6h) were used. At 100 ± 1 day gestation, females transferred gestation to maternity rooms. Before delivery, they weighed, classified according order distributed fed with experimental diets. Sows in a completely randomized design 2 treatments 40 replicates, each unit being composed sow. The were: T1: basal diet – corn...