Thais Scotti do Canto-Dorow

Universidade Franciscana - UFN · Programa de Pós-graduação em Ensino de Ciências e Matemática

This study describes a new species of Tradescantia sect. Austrotradescantia, T. multibracteata, found in the state of Rio Grande do Sul, southern Brazil. We provide data on the habitat, geographical distribution, morphological affinities and the conservation status of this new species. Photographs of the plant and habitat are also provided.

The economic potential of the germplasm of medicinal species is a rich resource that should be preserved and used. The medicinal species Echinodorus grandiflorus and Sagittaria montevidensis belong to the family Alismataceae. Depurative, diuretic, anti-inflammatory, antivenin, and anti-rheumatic actions have been associated with E. grandiflorus, wh...

In the American continent, Brazil is the country with the largest number of crabgrass species (Digitaria spp.). However, the distribution and predominance of these species across agricultural areas of Rio Grande do Sul state (RS) are not yet well known. We aimed to identify the Digitaria species occurring in rice and soybean crops in RS and assess...

This study aimed to contribute to the knowledge of the species of trees and shrubs occurring on the campus of the Federal University of Santa Maria, Santa Maria, RS. The survey was conducted through collections of fertile material, seasonal in urban campus, in the period between 2011 and 2012. We found 131 species belonging to 50 families, with fam...

An updated inventory of Brazilian seed plants is presented and offers important insights into the country’s biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, sh...

An updated inventory of Brazilian seed plants is presented and offers important insights into the country’s biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, sh...

The objective of this study was to develop an in vitro protocol for the micropropagation of Pluchea sagittalis (Lam.) Cabrera. Plants were regenerated in vitro from stem segments. The procedure employed includes: 1) surface sterilization of shoots by immersion in 70% ethanol for 10 s followed by 1.0% NaOCl for 10 min, and subsequent immersion in 0....

RESUMO:A espécie Polygonum punctatum Elliott (Polygonaceae) é amplamente utilizada pela população como planta medicinal. O objetivo deste trabalho é o de avaliar o potencial genotóxico e mutagênico de P. punctatum utilizando raízes de bulbos e radículas em sementes germinadas de Allium cepa através do teste in vivo, e realizar comparações da extraç...

Euphorbia tirucalli, popularly known as “avelós”, is a toxic plant used as tea in Brazilian folk medicine as an antibacterial, antiviral and anticarcinogenic agent. However, there is no scientific report about its potential toxicity in human cells. Therefore, the objective of the present study was to evaluate the in vitro genotoxicity and cytotoxic...

Eugenia uniflora (Surinam cherry tree) is an important species in traditional medicine and is used to decrease blood pressure and prevent heartburn, bronchitis, colic and stomachaches. The tealeaves have antirheumatic, anti-dysenteric, and febrifuge properties and are used to treat diabetes. This study aimed to assess the antiproliferative, mutagen...

This study presents an analysis of the external morphology and anatomy, especially of the micromorphology of reproductive organs that are important for characterizing Dyckia racinae L.B.Sm. The presence of a parietal U-shaped thickening in the endothecium and in the connective differ from other Dyckia species. Characteristics of pollen grains and o...

This work aims at caring out the survey of the genus Oxalis in the state of Rio Grande do Sul, offering means for the species identification. The study was carried out based on review of specialized literature and specific websites in the field of taxonomy; revision of the Herbarium; and field work throughout the state. In Rio Grande do Sul, the ge...

Forest and grasslands vegetations in the middle course of Toropi River, Rio Grande do Sul State (Brazil) are investigated, confirmed the existence of many endemic, rare and/or endangered species. Given the importance of this floristic and natural heritage, it is concluded that the construction of hydroelectric dams in the region demands the creatio...

As plantas com potencial medicinal têm sido muito utilizadas para o tratamento de doenças no Brasil. O objetivo deste estudo foi avaliar o efeito genotóxico e antiproliferativo de infusões de Mikania cordifolia (L.F.) Willd. sobre o ciclo celular de Allium cepa L. Foram coletadas duas populações no município de Santa Maria, Rio Grande do Sul, e, pa...

O presente trabalho trata da anatomia da madeira e descricao morfologica de Scutia buxifolia Reissek (Rhamnaceae), com base em material proveniente do Rio Grande do Sul. A estrutura anatomica concorda, em linhas gerais, com o referido na literatura para a familia Rhamnaceae e genero Scutia : poros solitarios e em multiplos radiais, de contorno oval...

O estudo do genero Oenothera L. no municipio de Santa Maria, Rio Grande do Sul, Brasil, revelou a ocorrencia de cinco especies. O trabalho apresenta chave para diferenciacao das especies, ilustracoes e dados de suas distribuicoes geograficas.

A historia da Botânica em Santa Maria e investigada desde o tempo das famosas expedicoes dos viajantes-naturalistas do seculo XIX e, mais detidamente, a partir da criacao da Faculdade de Farmacia, precursora da Universidade Federal de Santa Maria.

O presente trabalho trata da descricao botânica e anatomia da madeira de Rhamnus sphaerosperma Swartz (Rhamnaceae), com base em material proveniente do Rio Grande do Sul – Brasil. A estrutura anatomica da madeira concorda, em linhas gerais, com o referido na literatura para o genero Rhamnus e familia Rhamnaceae. A ausencia de arranjo dendritico ou...

O presente trabalho trata da descricao morfologica e anatomia da madeira de Gouania ulmifolia Hooker et Arnott (Rhamnaceae), com base em material proveniente do Rio Grande do Sul, Brasil. A maioria dos caracteres observados concorda com o relacionado para a familia Rhamnaceae, com excecao da presenca de diferentes classes de diâmetro de vasos (dimo...

Oxalis subvillosa Norlind was found within the riparian forest in the transition zone between the Atlantic Forest and Pampa biomes. This is the fi rst record of the species in Rio Grande do Sul. We provide its diagnostic features, illustrations and comments on the species habitat. This fi nding shows the few fl oristic studies, mainly related to he...

Unlabelled: CONTEXT. Campomanesia xanthocarpa Berg. (Myrtaceae), popularly known in Brazil as guabiroba, is a plant used as antidiarrheic, anti-inflammatory and antirheumatic agents, and in stomach and hepatic disorders. Objective: The antiproliferative and genotoxic effects of aqueous extracts and essential oil of C. xanthocarpa were evaluated....

Polygala paniculata L. is a medicinal plant that grows in the Brazilian Atlantic coast, known as 'barba-de-São-João', 'barba-de-bode', 'vassourinha branca', and 'mimosa'. In this study, pollen viability was estimated by three different staining methods: 2% acetic orcein, 2% acetic carmine, and Alexander's stain. The young inflorescences of twenty a...

The species Conyza bonariensis, known as hairy fleabane, belongs to the Asteraceaefamily and has its origin in South America. It has an annual cycleof life, being prolific and able to produce up to 200,000 seeds per plant.It occurs in various climatic conditions, showing good adaptability, and isgenerally considered weed, but also used as medicinal...

O grande desafio da temática ambiental é abordar questões em sua totalidade, evitando enfoques aos temas isolados, mesmo que relevantes. A prática de Educação Ambiental no cotidiano escolar apresenta alternativas para o envolvimento de toda a comunidade escolar com ações contínuas e não pontuais. Há possibilidades de uma educação ambiental interdis...

The study of environmental perception becomes important to be able to understand the interrelationships between humans and the environment that surrounds it. The aim of this study is to evaluate the environmental perception of Candida Zasso elementary school students in Palma Nova - RS. For the analysis, was used a questionnaire comprising 13 quest...

The Environmental Permit is one of the tools used in order to preservenatural resources for future generations by promoting sustainable managementpractices, especially in agricultural activities that use resources like water, in this study,irrigated rice. Currently, the banking agencies' requirements for the release of creditfollowing a series of r...

Artemisia verlotorum, popularly ‘infalivina’, is a medicinal herb used for respiratory, circulatory and digestive treatments. Antiproliferative and genotoxic effects of A. verlotorum aqueous extracts in three different concentrations (6, 32 and 48 g/L) were evaluated on the Allium cepa cell cycle. Results clearly showed a significant difference usi...

ReSuMo: Negrinho-do-mato (Cyanoloxia moesta) e Tico-tico-rei (Coryphospingus cucullatus) forrageando sobre o bambu Chusquea ramosissima. Relatamos o registro de Negrinho-do-mato Cyanoloxia moesta e Tico-tico-rei Coryphospingus cucullatus forrageando sementes e flores de bambu Chusquea ramosissima no centro-oeste do Rio Grande do Sul, Brazil.

Mikania glomerata is a plant used in Brazilian traditional medicine, known as 'guaco'. It possesses anti-inflammatory properties and the aqueous extracts of its leaves are indicated for the treatment of diseases of the respiratory tract. This study aimed at evaluating the antiproliferative and genotoxic effect of Mikania glomerata leaf infusions on...

The use of medicinal plants for the treatment of diseases that attack human beings has been a practice for centuries and it is seen as one of the main therapeutic resource in many communities and ethnical groups, especially in developing countries. In Brazil, the economic potential of the germoplasm of medicinal plants is a wealth to be used and pr...

Aloysia gratissima is used in Brazilian folk medicine for the treatment of digestive and respiratory diseases. The infusions (6 and 24 g L-1) and essential oils (0.25%, on ethanol) were prepared and we used groups of five Allium cepa bulbs for each treatment. A total of 2500 cells per treatment were analyzed and the mitotic indexes were calculated....

Este trabalho teve por objetivo testar se a análise macro e micro morfológica da superfície foliar poderia prover caracteres diagnósticos vegetativos para algumas das espécies mais comuns de Lauraceae encontradas em Florestas Estacionais do sul do Brasil. Utilizou-se a técnica de impressão foliar com adesivo instantâneo universal para a análise mic...

RESUMO Foi realizado o levantamento das espécies de trepadeiras ocorrentes em bordas de fragmentos de floresta estacional em Santa Maria, RS. As coletas foram quinzenais, durante o período de março de 2006 a março de 2007, e se restringiram às margens dos fragmentos florestais que se estendem ao longo das principais rodovias de acesso ao município....

Crude extract and fractions of Buddleja thyrsoides were investigated regarding antioxidant activities by DPPH, total phenolic contents by Folin-Ciocalteau and antimicrobial activity by the broth microdilution method. Total phenolics varied from 214.07 ± 3.6 to 438.4 ± 0.3 mg g-1. Crude extract, ethyl acetate, dichloromethane and butanolic fractions...

Diaspore dispersal is presumed to have great fitness for plants, which could be enhanced by different dispersal modes. Our aim was to generate a dispersal spectrum and to seek for analyze relative ecological importance of tree-species dispersal modes in a seasonal forest in Santa Maria, Rio Grande do Sul, Brazil (approximately 53º54'W and 29º38'S)...

In Brazil leaf infusions of the plant Pterocaulon polystachyum DC (Asteraceae) are used to treat digestive problems. We used plants from six P. polystachyum populations to prepare fresh aqueous leaf infusions at the concentration normally used in Brazil (2.5 g L-1) and at twice (5 g L-1) and four times (10 g L-1) this concentration. We rooted onion...