A5016751525- Plant Stress Responses and Tolerance
- Arsenic contamination and mitigation
- Heavy metals in environment
- Aluminum toxicity and tolerance in plants and animals
- Plant Micronutrient Interactions and Effects
- Growth and nutrition in plants
- Heavy Metal Exposure and Toxicity
- Soil Management and Crop Yield
- Pesticide and Herbicide Environmental Studies
- Silicon Effects in Agriculture
- Coal and Its By-products
- Weed Control and Herbicide Applications
- Selenium in Biological Systems
- Plant responses to water stress
- Soybean genetics and cultivation
- Environmental Toxicology and Ecotoxicology
- Amphibian and Reptile Biology
- Mitochondrial Function and Pathology
- Iron oxide chemistry and applications
- Photosynthetic Processes and Mechanisms
- Seed Germination and Physiology
- Constructed Wetlands for Wastewater Treatment
- Allelopathy and phytotoxic interactions
- Trace Elements in Health
- Clay minerals and soil interactions
Universidade Federal de Viçosa
2016-2025
Eletrobras (Brazil)
2024
Universidade Federal de Sergipe
2022
Universidade Estadual de Campinas (UNICAMP)
2001-2012
Ezequiel Dias Foundation
2011
High arsenic (As) concentrations are toxic to all the living organisms and cellular response this metalloid requires involvement of cell signaling agents, such as nitric oxide (NO). The As toxicity NO were analyzed in Pistia stratiotes leaves. Plants exposed four treatments, for 24 hours: control; SNP (sodium nitroprusside (NO donor); 0.1 mg L-1); (1.5 L-1) + L-1, respectively). absorption increased concentration reactive oxygen species (ROS) triggered changes primary metabolism plants....
Vampire bats are the only mammals that feed exclusively on blood. To uncover genomic changes associated with this dietary adaptation, we generated a haplotype-resolved genome of common vampire bat and screened 27 species for genes were specifically lost in lineage. We found previously unknown gene losses relate to reduced insulin secretion ( FFAR1 SLC30A8 ), limited glycogen stores PPP1R3E unique gastric physiology CTSE ). Other likely reflect biased nutrient composition ERN2 CTRL ) distinct...
Arsenic (As), in the form of trivalent arsenite or pentavalent arsenate, is a ubiquitous toxic compound naturally occurring environment. This study aimed to evaluate impact two different forms inorganic As on reproductive parameters following oral exposure. Adult Wistar male rats were exposed sodium arsenate at concentrations 0.01 mg/L 10 for 56 d drinking water. Sodium both and produced reduction daily sperm production, number spermatids testis, epididymal caput/corpus regions. Changes...
The reactive oxygen species generation, lipid peroxidation and antioxidative enzyme response of water hyacinth salvinia to Cd were evaluated. Cadmium was absorbed/accumulated mainly in the roots, but significant amounts also translocated leaves. No effect on dry weight detected, although toxicity symptoms visible. Superoxide H2O2 concentrations increased, addition both species, especially leaves salvinia. In general, activities reduced following treatment, Glutathione peroxidase (GPX, EC...
The influence of arsenic (As) on the growth and antioxidant system Lemna gibba L. exposed to five concentrations As (0.0, 0.25, 0.5, 1.0, 1.5 mg L−1) was studied. Although exposure reduced relative rate, continued grow even after high accumulation this element days exposure. concentration superoxide anion unaffected by As, whereas an increase hydrogen peroxide observed with increasing concentration. Increasing also increased enzyme activity dismutase, peroxidase, glutathione reductase total...
This study investigated the relationship between germ and Leydig cell death, testosterone, adiponectin levels in cadmium‐mediated acute toxicity. Cadmium chloride was administered a single dose to five groups of rats: G1 (0.9% NaCl) G2 G5 (0.67, 0.74, 0.86, 1.1 mg Cd/kg). After 7 days, animals were euthanized, testosterone testes analyzed. Dose‐dependent Cd accumulation identified. At 0.86 mg/kg, exhibited marked inflammatory infiltrate disorganization seminiferous epithelium. While cells...
Specimens of Pistia stratiotes were subjected to five concentrations arsenic (As) for seven days. Growth, As absorption, malondialdehyde (MDA) content, photosynthetic pigments, enzymatic activities, amino acids content and anatomical changes assessed. Plant accumulation increased with increasing metalloid in the solution, while growth rate pigment decreased. The MDA increased, indicating oxidative stress. Enzymatic activity at lower doses As, subsequently declining higher concentrations....
In the present study, we investigated involvement of mitochondrial permeability transition pore (PTP) in nitric oxide (NO)‐induced plant cell death. NO donors such as sodium nitroprusside (SNP) and S ‐nitroso‐ N ‐acetylpenicillamine inhibited growth caused death suspension‐cultured cells Citrus sinensis . Cells treated with SNP showed chromatin condensation fragmentation, characteristic apoptosis. loss membrane electrical potential, which was prevented by cyclosporin A (CsA), a specific...
Effect of nitric oxide (NO) in mitigating stress induced by arsenic (As) was assessed Pistia stratiotes, with NO supplied as sodium nitroprusside (SNP). Plants were exposed to four treatments: control, SNP (0.1 mg L−1), As (1.5 + and 0.1 for seven days (analyses growth, absorption mineral nutrients) 24 h concentration reactive oxygen intermediates (ROIs), antioxidant capacity photosynthesis). P. stratiotes accumulated high concentrations this accumulation wasn't affected the addition SNP,...
The toxic effects of cadmium (Cd) on reproductive parameters are widely described in the literature. Experimental models often make use intraperitoneal route ( i.p. ), although human intoxication occurs preferentially by oral and can be continuous. However, little is known about effect Cd administration routes testicular structure. Thus, this study investigated impact exposure comparing both routes, single dose (SD), addition to fractional doses (FD). Swiss adult male mice received CdCl 2...
ABSTRACT The objective of this study was to evaluate the concentration potentially toxic elements in Brachiaria decumbens , Stylosanthes guianensis and Saccharum officinarum plants soil samples affected unaffected areas by rupture Fundão dam, Brazil. Samples were collected residues from dam (RAA1, RAA2, RAA3) an area (control). material analyzed for composition micronutrients trace plants, as well contamination factor (CF), accumulation factor, translocation (TF). Overall, results showed...
Arsenic (As) is the one of main environmental pollutant and phytoremediation an effective tool for its removal environment.In this study, Pistia stratiotes were exposed to seven As concentrations (0, 3, 7, 10, 13, 16 20 µM) then, influence metalloid on growth, mineral nutrition photosynthesis analyzed.It was observed that species have a high affinity uptake occurs rapidly.The Cu, Mn, Fe P increased until concentration 13 µM, decreasing in higher concentrations.The Mg content also decreased...