A5056788039- Plant Diversity and Evolution
- Plant and animal studies
- Fern and Epiphyte Biology
- Plant Parasitism and Resistance
- Plant and Fungal Species Descriptions
- Growth and nutrition in plants
- Botanical Research and Applications
- Weed Control and Herbicide Applications
- Phytochemistry Medicinal Plant Applications
- Plant tissue culture and regeneration
- Plant-Derived Bioactive Compounds
- Phytochemistry and Biological Activities
- Banana Cultivation and Research
- Agricultural and Food Sciences
- Pesticide and Herbicide Environmental Studies
- Sesquiterpenes and Asteraceae Studies
- Allelopathy and phytotoxic interactions
- Bee Products Chemical Analysis
- Soil Management and Crop Yield
- Flavonoids in Medical Research
- Essential Oils and Antimicrobial Activity
- Plant responses to water stress
- Irrigation Practices and Water Management
- Insect and Arachnid Ecology and Behavior
- Seed Germination and Physiology
Universidade Federal de Viçosa
2016-2025
Instituto de Botânica
2016
Centro Universitário de Sete Lagoas
2012
Coordenação de Aperfeicoamento de Pessoal de Nível Superior
2003
Center of Applied Ecology & Sustainability
2003
Propolis, a honeybee product, has gained popularity as food and alternative medicine. Its constituents have been shown to exert pharmacological effects, such anti-microbial, anti-inflammatory anticancer. Shoot apices of Baccharis dracunculifolia (alecrim plant, Asteraceae) pointed out sources resin for green propolis. The present work aimed (i) observe the collecting behavior bees, (ii) test efficacy histological analysis in studies propolis botanical origin (iii) compare chemistries alecrim...
Phylogenetic and morphological studies have helped clarify the systematics of large complex groups such as tribe Crotoneae (Euphorbiaceae). However, very little is known about diversity, structure, function anatomical features in this tribe. comprises species-rich pantropical genus Croton six small neotropical genera. Here we characterized anatomy leaf secretory structures members explored their evolutionary significance.Young mature leaves 26 species were studied using standard light...
Euphorbiaceae is among the main angiosperm families with a high number of laticiferous species. Although many its species remain to be studied in terms their anatomy, chemistry, and uses, there are some recognized economic importance due useful secondary compounds present latex. Acalyphoideae, one three major subfamilies, has traditionally been distinguished from rest by absence latex laticifers. To test this long-standing assumption, we anatomically analysed 40 10 genera, representing six...
Summary Malpighiaceae are widely known for their large number of lianas. However, the family is ancestrally reconstructed as self-supporting, and clade Galphimioid represents one clades that retained this habit, occupying a wide array habitats being either shrubs or trees. Here we sampled 13 species collected from natural habitats, delimiting 14 variable characters, which 12 discrete two continuous, analyzing them under comparative phylogenetic framework. With our reconstruction, propose 8...
Os efeitos da deriva do glyphosate durante aplicação são prejudiciais à cultura eucalipto. Neste trabalho, avaliou-se o efeito simulada no crescimento e na morfoanatomia foliar Utilizou-se delineamento em blocos casualizados com quatro repetições, sendo a parcela experimental constituída de uma planta cultivada vaso 10 litros solo. tratamentos foram 0; 43,2; 86,4; 172,8; 345,6 g e.a. ha-1 glyphosate, aplicados aos 40 dias após plantio das mudas pulverizador precisão, modo não atingir terço...
Colleters are secretory structures that occur in vegetative or reproductive shoot apices of many botanical families. However, the order Myrtales, reports colleters have considered only external morphology. We therefore evaluated apical meristems 52 species belonging to 17 genera from seven tribes subfamily Myrtoideae (Myrtaceae), so as analyse incidence and morphological types colleters. The samples were fixed for light scanning electron microscopy. Histochemical tests carried out on fresh...
A anatomia da folha, de colmo e do rizoma Digitaria insularis foi investigada, visando identificar características que possam estar relacionadas à sua tolerância ao glyphosate. Sementes rizomas plantas adultas foram coletadas em campo, área plantio direto, onde o herbicida glyphosate vem sendo utilizado repetidamente há vários anos. As provenientes dessas sementes desses cultivadas vasos com capacidade 3 L, contendo solo textura média, casa vegetação. Quando as atingiram estádio fenológico...
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...
Premise of research. Colleters are structures that secrete a sticky product covers and protects the shoot apex floral buds. In Chamaecrista, colleters have been reported in cotyledons three species on leaves all belonging to sect. Absus subsect. Baseophyllum. Anatomical studies using taxonomic phylogenetic approaches necessary evaluate presence, diversity, importance for Chamaecrista.Methodology. We analyzed 55 Chamaecrista five six sections genus. Samples from both herbarium-...
Cyrtopodium glutiniferum is an endemic orchid of Brazil with potential medicinal and ornamental applications. As mycorrhizal fungi are essential for the initiation life cycle, aim this study was to determine strains suitable seed germination protocorm development C. characterize symbiotic protocorms. Seeds were inoculated nine fungi, Epulorhiza spp., Ceratorhiza Rhizoctonia sp., originally isolated from Brazilian neotropical orchids. Only isolates promoted development. Three (M1, M6 = E....
Banisteriopsis is considered one of the largest genera Malpighiaceae with 58 species, which 47 occur in Brazil. The typical calyx and leaf glands are relevant to adaptive success Malpighiaceae. Comparative studies anatomical histochemical characteristics may reveal similarities assist interpretation functions performed by such glands. present study aimed describe anatomy 38 species ofBanisteriopsis that Brazil, analyze these structures histochemically B. campestris, laevifolia B malifolia,...
We describe the leaf anatomy of 42 60 species genus Banisteriopsis, one largest and most diverse genera Malpighiaceae in Cerrado domain. Our aim was to identify anatomical characters useful for taxonomy systematics this morphological genus. Expanded leaves from herbarium specimens were rehydrated processed according usual methods analysis under light microscopy. All compared using Unweighted Pair Group Method with Arithmetic Mean algorithm expressed dendrograms. The petiole contour,...
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...
Little attention has been paid to species of Chamaecrista sect. Apoucouita (Leguminosae-Caesalpinioideae), especially regarding anatomical studies. When only vegetative material is available, the identification such may be difficult. Additionally, some C. even harder identify because they can resemble Inga Mill. (Leguminosae-Mimosoideae). The present study focused on recognizing morphoanatomical characters leaves that are taxonomically useful for by employing standard techniques. arrangement...
Premise of research. Previous studies secretory structures in species the Neotropical dragon's blood Croton (section Cyclostigma) show inconsistencies their classification. An accurate assessment identity and homology such is essential for taxonomic evolutionary studies.Methodology. Field-collected leaves, stipules, flowers at different developmental stages were sampled. The material was subjected to standard anatomical study by light microscopy SEM, secretions evaluated histochemical...
Abstract Trichomes are key functional traits that protect plants against abiotic stresses, herbivores and pathogens. In addition to their ecological roles, trichomes show high morphological variability in many lineages, providing useful characters for species characterization taxon delimitation. Here, we focus on Croton, a megadiverse genus (c. 1200 spp.) of Euphorbiaceae, which these structures ubiquitous exhibit significant variation form, location the plant body, density function. Owing...