A5032543659- Plant Micronutrient Interactions and Effects
- Plant Stress Responses and Tolerance
- Phytase and its Applications
- Soybean genetics and cultivation
- Legume Nitrogen Fixing Symbiosis
- Growth and nutrition in plants
- GABA and Rice Research
- Plant responses to water stress
- Wheat and Barley Genetics and Pathology
- Rice Cultivation and Yield Improvement
- Heavy metals in environment
- Agricultural pest management studies
- Postharvest Quality and Shelf Life Management
- Seed Germination and Physiology
- Plant tissue culture and regeneration
- Proteins in Food Systems
- Food composition and properties
- Plant nutrient uptake and metabolism
- Aluminum toxicity and tolerance in plants and animals
- Enzyme Catalysis and Immobilization
- Genetics and Plant Breeding
- Sugarcane Cultivation and Processing
- Polyamine Metabolism and Applications
- Soil Management and Crop Yield
- Enzyme Structure and Function
Universidade de São Paulo
2014-2025
Universidade Estadual Paulista (Unesp)
2018
Universidade Brasil
2006
Universidade Estadual de Campinas (UNICAMP)
2005
Universidade Federal de Santa Catarina
2005
Departamento de Ciência e Tecnologia
2005
Centre National de la Recherche Scientifique
2004
Methodist University of Piracicaba
2002
Brazilian Agricultural Research Corporation
1999
Selenium (Se) is an essential element for humans and animals that required key antioxidant reactions, but can be toxic at high concentrations. We have investigated the effect of Se in form selenite on coffee cell suspension cultures over a 12-day period. The defence systems were induced cells grown presence 0.05 0.5 mm sodium (Na2SeO3). Lipid peroxidation alterations enzymes main responses observed, including severe reduction ascorbate peroxidase activity, even selenite. Ten superoxide...
Sugarcane yield and quality are affected by a number of biotic abiotic stresses. In response to such stresses, plants may increase the activities some enzymes as glutathione transferase (GST), which involved in detoxification xenobiotics. Thus, sugarcane GST was modelled molecular docked using program LIGIN investigate contributions active site residues towards binding reduced (GSH) 1-chloro-2,4-dinitrobenzene (CDNB). As result, W13 I119 were identified key for specificity GSTF1 (SoGSTF1)...
Abstract Tomato is an important crop worldwide. Cadmium (Cd) concentrations in fruits depend on tomato genotype. This work aimed to study the relation among Cd accumulation, tolerance mechanisms, and fruit features two cultivars with contrasting stress. Tolerant (Yoshimatsu) sensitive (Tropic Two Orders) plants were grown control contaminated soils (0.04 3.77 mg/kg Cd, respectively) from seedling stage production. Both able acclimatize exposure, probably through mechanisms associated...
The capacity of two maize opaque endosperm mutants ( o1 and o2 ) floury fl1 fl2 to accumulate lysine in the seed relation their wild type counterparts Oh43+ was examined. highest total content 3.78% mutant lowest 1.87% , as compared with (1.49%). For soluble lysine, exhibited over a 700% increase, whilst for fl3 28% decrease encountered, type. In order understand mechanisms causing these large variations both content, quantitative qualitative study N constituents has been carried out data...
Abiotic stresses negatively affect crop development and yield. However, the use of seaweed extracts can alleviate production losses through improvement antioxidant system synthesis compatible osmolytes. The aim this study was to assess effects Ascophyllum nodosum extract on response yield common bean plants (Phaseolus vulgaris) under drought stress. Therefore, two methods application (foliar spray soil irrigation) doses (5 10 mL L-1) were tested, whereas untreated used as control. There no...
Quality protein maize (QPM) varieties have been produced by the introduction of opaque-2 modifier genes. Two QPM varieties, BR451 and BR473, a wild type an variety, used to study key enzymes controlling lysine metabolism in endosperm during development. Aspartate kinase homoserine dehydrogenase enzymes, which are involved threonine biosynthesis, respectively, exhibited identical activity patterns development, with maximum specific at 16 days after pollination. The higher levels aspartate...
In plant, the catabolism of lysine has only been studied in some detail maize. The enzymes 2-oxoglutarate reductase (also known as alpha-ketoglutarate reductase; LOR) and saccharopine dehydrogenase (SDH), which convert into saccharopine, glutamic acid 2-aminoadipate 6-semialdehyde, respectively, were isolated from immature rice seeds partially purified through a three-step purification procedure involving ammonium sulphate precipitation, anion-exchange gel-filtration chromatographies,...
The capacity of three maize endosperm opaque mutants (o10, o11 and o13) to accumulate soluble lysine in the seed relation their wildtype counterpart, W22+, was investigated. W22o13 W22o11 exhibited 278% 186% increases lysine, respectively, while for W22o10, a 36% decrease observed, compared with wildtype. A quantitative qualitative study N constituents has been conducted data obtained total protein, non-protein N, amino acids, albumins / globulins, zeins glutelins present mutants. Following...
The objective of this study was to investigate and characterize cowpea (Vigna unguiculata) genotypes for total grain protein content, storage fractions (globulin, albumin, prolamin, basic acid glutelins), phytate minerals contents. Eighteen were selected. Total content varied from 21.4% 29.2%, BRS Marataoã Paulistinha genotypes, respectively. variation in the concentration each fraction significant (P<0.05) only glutelins (basic acid). studied exhibited great similarity PAGE electrophoretic...
Abstract Studies involving the effects of long‐term exposure plants to cadmium (Cd) are not usual, hence, data about Cd‐induced impacts on plant reproductive organs scarce. The lack robust information this matter is surprising and also worrying because it yet clear whether (and how strong) Cd influences yield, quality fruits seeds. Such necessary guide strategies manage crops avoid negative environment human health. This review gathers long flowers, seeds Cd. A critical analysis related...
Two high lysine maize endosperm mutations, opaque-5 (o5) and opaque-7 (o7), were biochemically characterized for protein synthesis metabolism in immature seeds. Albumins, globulins, glutelins, which have a content of lysine, shown to be increased the mutants, whereas zeins, contain trace concentrations reduced relation wild-type lines B77xB79+ B37+. These alterations storage fraction distribution possibly explain concentration two mutants. Using two-dimensional polyacrylamide gel...
In general, the effects of Cadmium (Cd) on crop quality are evaluated solely by Cd accumulation in edible plant parts; thus, potential several nutritional features not often taken into account. This study enzymatic activities lysine (Lys) metabolism, storage protein and amino acid profile maize. Stress parameters were also assessed. vegetative organs, was accumulated following decreasing order: roots > stems leaves. grains decreased at grain maturity (from 0.25 to 0.07 µg g−1 DW). leaves,...
Heat stress can impact crop development and yield amino acids play diverse essential roles in plants. This work aimed to study the long-term effects of foliar spray with L-arginine antioxidant machinery, physiology, nutrition, productivity fruit quality tomato plants subjected transient heat stresses. Six concentrations were sprayed on plants: 0 (control), 0.10, 0.25, 0.50, 1.0 2.0 g·L–1. The content hydrogen peroxide (H2O2), a reactive oxygen species, decreased concurrently increasing...