A5057935336- Plant Diversity and Evolution
- Fern and Epiphyte Biology
- Plant and animal studies
- Growth and nutrition in plants
- Plant Stress Responses and Tolerance
- Arsenic contamination and mitigation
- Plant Parasitism and Resistance
- Botanical Research and Applications
- Plant responses to elevated CO2
- Plant and Fungal Species Descriptions
- Heavy metals in environment
- Plant tissue culture and regeneration
- Environmental and biological studies
- Plant Micronutrient Interactions and Effects
- Lichen and fungal ecology
- Fluoride Effects and Removal
- Phytochemistry Medicinal Plant Applications
- Soil Management and Crop Yield
- Plant Pathogens and Fungal Diseases
- Insect-Plant Interactions and Control
- Aluminum toxicity and tolerance in plants and animals
- Plant responses to water stress
- Leaf Properties and Growth Measurement
- Plant Water Relations and Carbon Dynamics
- Agricultural and Food Sciences
Universidade Federal de Viçosa
2015-2024
Instituto de Botânica
2006
Coordenação de Aperfeicoamento de Pessoal de Nível Superior
2003
Center of Applied Ecology & Sustainability
2003
Em diversos estudos interdisciplinares em que a Anatomia Vegetal é utilizada, análises quantitativas complementares são necessárias. Geralmente, avaliação micromorfométrica feita manualmente e/ou utilizando programas computacionais de análise imagens não específicos. Este trabalho teve como objetivo desenvolver um programa específico para quantitativa e testar sua eficiência aceitação por usuários. A solução foi elaborada na linguagem Java, visando maior mobilidade relação ao sistema...
In plant cells, environmental stressors promote changes in connectivity between the cortical endoplasmic reticulum (ER) and plasma membrane (PM). Although this process is tightly regulated space time, molecular signals structural components mediating these interorganelle communication are only starting to be characterized. report, we confirm presence of a putative tethering complex containing synaptotagmins 1 5 (SYT1 SYT5) Ca2+- lipid-binding protein (CLB1/SYT7). This enriched at ER-PM...
Experiments were conducted in order to characterize the injuries on leaf structure and micromorphology of G. americana evaluate degree susceptibility this species simulated acid rain. Plants exposed rain (pH 3.0) for ten consecutive days. Control plants submitted only distilled water 6.0). Leaf tissue was sampled fixed light scanning electron microscopy. Necrotic interveinal spots blade occurred. Epidermis mesophyll cells collapse, hypertrophy spongy parenchyma cells, accumulation phenolic...
The occurrence of nonarticulated laticifers has been recorded in the literature for Apocynaceae, but little information is available on their structure and chemical compounds latex. objective this study was to describe, anatomically histochemically, latex found roots, stems, leaves Mandevilla atroviolacea (Stadelm) Woodson, a genus Apocynaceae. Laticifer anatomy examined by light microscopy, nature exuded studied using cytochemistry. Articulated were present M. atroviolacea. lactiferous...
Arsenic (As) pollution is a major environmental concern due to its worldwide distribution and high toxicity organisms. The fern Pityrogramma calomelanos one of the few plant species known be able hyperaccumulate As, although mechanisms involved are largely unknown. This study aimed investigate metabolic adjustments in As‐tolerance P. . For this purpose, ferns with five seven fronds were exposed series As concentrations. Young used for biochemical analysis metabolite profiling using gas...
μ-EDXRF is a strong analytical tool enabling the simultaneous mapping of As and P in As-hyperaccumulator fern <italic>Pityrogramma calomelanos</italic>.
Os objetivos deste trabalho foram: caracterizar os efeitos do flúor em espécies arbóreas nativas, nos estádios de plântula e muda; identificar injúrias provocadas pelo na estrutura da lâmina foliar espécie mais sensível; fornecer subsídios para seleção características a serem utilizadas bioindicação contribuir com informações sobre resistência ou tolerância das plantas, visando ao reflorestamento áreas impactadas pela chuva flúor. As analisadas foram Gallesia gorazema Moq. (Phytolaccaceae),...
Besides being vital tools in taxonomic evaluation, the anatomy of plant secretory structures and chemical composition their secretions may contribute to a more thorough understanding roles functions these structures. Here we used standard techniques for histochemistry examine on leaves at different stages development Prockia crucis , evaluate origin structures, identify disaccharides monosaccharides exudates. Fructose, glucose, sucrose constituted up 49.6% entire secretion. The glands were...
The goal of this study was to determine the symptoms and microscopic damage caused by fluoride on Spondias dulcis, a fluoride-sensitive species. plants were exposed simulated fog with (0, 5, 10, 15 20 mg L(-1)) for min daily during four consecutive days. Samples from leaflets without any apparent injury collected analysis. percentage necrosed leaf area measured, level pollutant in dry matter basal apical portions plant determined. necroses began 24 h after first simulation mainly base...
Colleters are secretory structures located in reproductive and (or) vegetative organs of many eudicots. In Gentianaceae Juss., the presence foliar colleters has been neglected, anatomical histochemical studies scarce. The objectives this study were to investigate anatomy, ontogeny, chemical nature secretion found Macrocarpaea obtusifolia (Griseb.) Gilg establish a relationship between their structure function check whether these similar those described for other genera families Gentianales....