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Pesquisa : A18.400 [Categoria DeCS]
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Masson, Maria Lucia
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Id: biblio-1055403
Autor: Ferreira, Bruna Mayara Roldão; Dagostin, João Luiz Andreotti; Andrade, Eriel Forville de; Takashina, Thiago Atsushi; Ellendersen, Luciana de Souza Neves; Masson, Maria Lucia.
Título: Relationship Between Parameters of Development and Functional Compounds of Yacon Leaves
Fonte: Braz. arch. biol. technol;62:e19180439, 2019. tab, graf.
Idioma: en.
Projeto: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
Resumo: Abstract Yacon is a tuberous root from the Andean region being increasingly grown across the world due to the low caloric values of their roots and the functional properties of extractions of its leaves. However, there is still a gap in the knowledge of how the plant develops, and if physical and chemical changes are noticed regarding maturity. The subject of this work was to investigate the dynamics of a group of parameters and to establish correlations across them. To achieve this goal, leaves collected from three different parts of the plant in three months were assessed regarding size (plant height and leaf area), color and the presence of sesquiterpene lactones. Different methods of extraction were also studied and the total phenolic content was analyzed. The analysis of the results revealed different patterns in the quantity, size and leaf distribution according to the age of the plant. From three different methods of extraction studied, decoction seems to be the most appropriate one to obtain phenolic compounds with greater yield and safety. Besides, the greenness of yacon leaves showed a linear correlation to the total phenolic content, being a simple and promising estimator of the corresponding bioactive group. Sesquiterpene lactones were identified in all extracts, indicating the ease of their extractability even in simple procedures of tea-making.
Descritores: Raízes de Plantas
Fatores Físicos e Químicos
Compostos Fenólicos
Lactonas
Responsável: BR1.1 - BIREME


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Id: lil-659376 LILACS-Express
Autor: GUZMÁN PIEDRAHITA, ÓSCAR ADRIÁN.
Título: EL NEMATODO BARRENADOR (Radopholus similis [COBB] THORNE) DEL BANANO Y PLÁTANO / THE BANANA AND PLANTAIN BORER NEMATODE (Radopholus similis [COBB] THORNE)
Fonte: Rev. luna azul;(33):137-153, jul.-dic. 2011. ilus.
Idioma: es.
Resumo: Radopholus similis es un nematodo fitoparásito que se alimenta de raíces y cormos de banano y plátano en todo el mundo, afectando el crecimiento y desarrollo de este cultivo, con pérdidas en producción entre el 20 y 100%. Debido a que estas musáceas han sido tradicionalmente propagadas por semilla asexual mediante colinos "cormos" o cepas "rizomas" y a que este fitonematodo se caracteriza por ingresar y movilizarse dentro de las células de raíces y los cormos, esto ha permitido que el intercambio de material de siembra infectado sea el principal medio de su diseminación alrededor del mundo. Por tales motivos, se describe a R. similis registrando su distribución, biología, pérdidas, hospedantes, supervivencia, medios de diseminación y prácticas de manejo como evitar el ingreso de los nematodos en el suelo antes de establecer un cultivo, reducir la cantidad de ellos en el material de siembra, promover la sanidad de las raíces de las plantas para ayudarlas a tolerar o competir con la presión de los nematodos u otros patógenos y reducir la oportunidad de que el nematodo ingrese a las raíces o rizomas.

Radopholus similis is a phytoparasitic nematode which feeds itself from banana and plantain roots and corms worldwide, affecting the crops' growth and development with a loss in production between 20 and 100%. Because these musaceae has been traditionally spread by asexual seeds through young coffee trees "corms" or "rhizome" stumps, and because this phytonemtode is characterized because it penetrates and moves into the roots' cells and the corms, this has allowed the exchange of infected sowing material to be the main means for its dissemination around the world. Because of this, R. similis is described registering its distribution, biology, losses, hosting, survival, dissemination means and management practices such as avoiding the penetration of nematodes in the soil before planting, reducing their quantity in the sowing material, promoting sanity of the roots in order to help them tolerate or compete with the nematodes or any other pathogen pressure, and reducing the probabilities for the nematode to penetrate roots and rhizomes.
Descritores: Musaceae
-Cultivos Agrícolas
Raízes de Plantas
Nematoides
Limites: Humanos
Tipo de Publ: Artigo Clássico
Responsável: CO54.1 - Centro de Biblioteca e Información Científica


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Texto completo SciELO Chile
Texto completo
Id: biblio-950732
Autor: Kabir, Md Golam; Rahman, Md Monsor; Ahmed, Nazim Uddin; Fakruddin, Md; Islam, Saiful; Mazumdar, Reaz Mohammad.
Título: Antioxidant, antimicrobial, toxicity and analgesic properties of ethanol extract of Solena amplexicaulis root
Fonte: Biol. Res;47:1-12, 2014. graf, tab.
Idioma: en.
Resumo: BACKGROUND: This study was subjected to investigate different pharmacological properties of ethanol extract ofSolena amplexicaulis root. RESULTS: The extract contains flavonoid, alkaloid, saponin and steroid compounds. The extract exhibited excellent antioxidant activity in DPPH radical scavenging activity. The extract also showed potent activity in brine shrimp lethality bioassay. The LC50 value was found to 44.677 µg/ml. The extract showed better anti-bacterial activity against gram-negative bacteria. In antifungal assay, the maximum 79.31% of anti-mycotic activity was observed against Aspergillus ochraceus while minimum 44.2% against Rhizopus oryzae. MIC value ranged between 1500 - 3000 µg/ml. The extract was found moderately toxic with a 24-hr LD50 value of 81.47 mg/kg in Swiss albino mice. The degree of inhibition by the ethanolic extract of the root was found less than that of standard analgesic drug diclofenac sodium. The extract also showed moderate anti-inflammatory and antinociceptive activity and anti-diabetic property. Reducing power of the extract was comparable with standard ascorbic acid. Moderate in vitro thrombolytic activity, lipid peroxidation inhibition property, metal chelating ability and stress-protective activity was also observed. CONCLUSION: Ethanol extract of Solena amplexicaulis root can be valuable for treatment of different diseases.
Descritores: Extratos Vegetais/farmacologia
Sequestradores de Radicais Livres/farmacologia
Raízes de Plantas/química
Cucurbitaceae/química
Analgésicos/farmacologia
Anti-Infecciosos/farmacologia
-Artemia/efeitos dos fármacos
Aspergillus/efeitos dos fármacos
Saccharomyces cerevisiae/efeitos dos fármacos
Shigella/efeitos dos fármacos
Bacillus/efeitos dos fármacos
Extratos Vegetais/química
Peroxidação de Lipídeos/efeitos dos fármacos
Testes de Sensibilidade Microbiana
Quelantes/farmacologia
Substâncias Redutoras/farmacologia
Fibrinolíticos/farmacologia
Hipoglicemiantes/farmacologia
Dose Letal Mediana
Anti-Inflamatórios/farmacologia
Antibacterianos/farmacologia
Antifúngicos/farmacologia
Antioxidantes/farmacologia
Limites: Animais
Camundongos
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Chile
Texto completo
Id: biblio-950737
Autor: Lee, Won-Seok; Lim, Jin-Han; Sung, Myung-Soon; Lee, Eun-Gyeong; Oh, Yoo-Jeong; Yoo, Wan-Hee.
Título: Ethyl acetate fraction from Angelica sinensis inhibits IL-1ß-induced rheumatoid synovial fibroblast proliferation and COX-2, PGE2, and MMPs production
Fonte: Biol. Res;47:1-8, 2014. graf.
Idioma: en.
Resumo: BACKGROUND: The root of Angelica sinensis (AS), also known as "Dang-gui," was a popular herbal medicine widely used in the treatment of gynecological diseases in China, Korea, and Japan for a long time. This study aimed to determine the effects of ethyl acetate fraction from Angelica sinensis (EAAS) on the interleukin-1ß (IL-1ß)-induced proliferation of rheumatoid arthritis synovial fibroblasts (RASFs), and production of matrix metalloproteinases (MMPs), cyclooxygenase (COX) 2, and prostaglandin E2 (PGE2), involved in articular bone and cartilage destruction, by RASFs. RESULTS: RASF proliferation was evaluated with cholecystokinin octapeptide (CCK-8) reagent in the presence of IL-1ß with/without EAAS. Expression of MMPs, tissue inhibitor of metalloproteinases-1 (TIMP-1), COXs, PGE2, and intracellular mitogen-activated protein kinase (MAPK) signaling molecules, including p-ERK, p-p38, p-JNK, and NF-κB, were examined using immunoblotting or semi-quantitative reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay. EAAS inhibited IL-1ß-induced RASF proliferation; MMP-1, MMP-3, and COX-2 mRNA and protein expressions; and PGE2 production. EAAS also inhibits the phosphorylation of ERK-1/2, p38, and JNK, and activation of NF-κB by IL-1ß. CONCLUSION: EAAS might be a new therapeutic modality for rheumatoid arthritis management.
Descritores: Artrite Reumatoide/metabolismo
Bolsa Sinovial/citologia
Mediadores da Inflamação/metabolismo
Angelica sinensis/química
Proliferação de Células/efeitos dos fármacos
Fibroblastos/efeitos dos fármacos
-Artrite Reumatoide/patologia
Proteínas Recombinantes/farmacologia
Ensaio de Imunoadsorção Enzimática
Extratos Vegetais/farmacologia
Dinoprostona/metabolismo
Immunoblotting
NF-kappa B/efeitos dos fármacos
Raízes de Plantas/química
Metaloproteinases da Matriz/efeitos dos fármacos
Metaloproteinases da Matriz/metabolismo
Medicina Herbária
Ciclo-Oxigenase 2/efeitos dos fármacos
Ciclo-Oxigenase 2/metabolismo
Interleucina-1beta/farmacologia
Cultura Primária de Células
Reação em Cadeia da Polimerase em Tempo Real
Fibroblastos/citologia
Fibroblastos/metabolismo
Citometria de Fluxo
Articulação do Joelho/citologia
Acetatos
Limites: Humanos
Responsável: CL1.1 - Biblioteca Central


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Texto completo
Id: biblio-950753
Autor: Zeb, Anwar; Sadiq, Abdul; Ullah, Farhat; Ahmad, Sajjad; Ayaz, Muhammad.
Título: Phytochemical and toxicological investigations of crude methanolic extracts, subsequent fractions and crude saponins of Isodon rugosus
Fonte: Biol. Res;47:1-6, 2014. tab.
Idioma: en.
Resumo: BACKGROUND: Isodon rugosus is used traditionally in the management of hypertension, rheumatism, tooth-ache and pyrexia. Present study was arranged to investigate I. rugosus for phytoconstituents, phytotoxic and cytotoxic activities to explore its toxicological, pharmacological potentials and to rationalize its ethnomedicinal uses. Briefly, qualitative phytochemical analysis of the plant extracts were carried out for the existence of alkaloids, flavonoids, saponins, oils, glycosides, anthraquinones, terpenoids, sterols and tannins. Plant crude methanolic extract (Ir.Cr), its subsequent fractions; n-hexane (Ir.Hex), chloroform (Ir.Chf), ethyl acetate (Ir.EtAc), aqueous (Ir.Aq) and saponins (Ir.Sp) in different concentrations were tested for phytotoxic and cytotoxic activities using radish seeds and brine shrimps (Artemia salina) respectively. The phytotoxic activity was determined by percent root length inhibition (RLI) and percent seeds germination inhibition (SGI) while the cytotoxicity was obtained with percent lethality of the brine shrimps. RESULTS: Ir.Cr was tested positive for the presence of alkaloids, glycosides, flavonoids, oils, terpenoids, saponins, tannins and anthraquinones. Among different fractions Ir.Sp, Ir.Chf, Ir.EtAc, and Ir.Cr were most effective causing 93.55, 89.32, 81.32 and 58.68% inhibition of seeds in phytotoxicity assay, with IC50 values of 0.1, 0.1, 0.1 and 52 µg/ml respectively. Similarly, among all the tested samples, Ir.Sp exhibited the highest phytotoxic effect causing 91.33% root length inhibition with IC50 of 0.1 µg/ml. Ir.Sp and Ir.Chf were most effective against brine shrimps showing 92.23 and 76.67% lethality with LC50 values of 10 and 12 µg/ml respectively. CONCLUSIONS: It may be inferred from the current investigations that I. rugosus contains different secondary metabolites and is a potential source for the isolation of natural anticancer and herbicidal drug molecules. Different fractions exhibited phytotoxic and cytotoxic activities, thus providing pharmacological basis for ethnomedicinal uses of this plant.
Descritores: Saponinas/análise
Extratos Vegetais/farmacologia
Isodon/química
Fitoterapia
-Artemia/efeitos dos fármacos
Taninos/análise
Terpenos/análise
Flavonoides/análise
Óleos Vegetais/análise
Clorofórmio
Antraquinonas/análise
Raízes de Plantas/crescimento & desenvolvimento
Citotoxinas
Componentes Aéreos da Planta/química
Metanol
Alcaloides/análise
Glicosídeos/análise
Hexanos
Limites: Animais
Responsável: CL1.1 - Biblioteca Central


  6 / 263 LILACS  
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Texto completo
Id: biblio-950764
Autor: Khan, Alam; Islam, Shariful; Rahman, Moizur; Zaman, Tanjeena; Haque, Ekramul.
Título: Pesticidal and pest repellency activities of a plant derived triterpenoid 2α, 3ß, 21ß, 23, 28-penta hydroxyl 12-oleanene against Tribolium castaneum
Fonte: Biol. Res;47:1-6, 2014. graf, tab.
Idioma: en.
Resumo: BACKGROUND: Tribolium castaneum (Herbst) is a major pest of stored grain-based products, and cause severe damage to cereal grains throughout the world. The present investigation was aimed to determine the pesticidal and pest repellent activities of 2α,3ß,21ß,23,28-penta hydroxyl 12-oleanene against T. castaneum. The compound 2α,3ß,21ß,23,28-penta hydroxyl 12-oleanene is a triterpenoid which was isolated from the roots of Laportea crenulata Gaud. Surface film technique was used for pesticidal screening, whereas, pest repellency property of the triterpenoid was determined by filter paper disc method. RESULTS: At 24 hours of exposure duration, significant mortality records (80% and 86%) were observed at doses 0.88 and 1.77 mg/cm². No significant change in mortality records was observed when duration of exposure was increased up to 48 hours. The triterpenoid showed significant repellency activity at doses 0.47 and 0.94 mg/cm². CONCLUSION: These data suggest that the triterpenoid 2α,3ß,21ß,23,28-penta hydroxyl 12-oleanene possess both pesticidal and pest repellency activities against T. castaneum and can be used in controlling the pest of grain-based products.
Descritores: Ácido Oleanólico/análogos & derivados
Tribolium/efeitos dos fármacos
Controle de Insetos/métodos
Urticaceae/química
Repelentes de Insetos/farmacologia
-Ácido Oleanólico/farmacologia
Praguicidas/farmacologia
Tribolium/classificação
Raízes de Plantas/química
Urticaceae/classificação
Dose Letal Mediana
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CL1.1 - Biblioteca Central


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Texto completo
Id: biblio-950767
Autor: Ikinci, Ali; Bolat, Ibrahim; Ercisli, Sezai; Kodad, Ossama.
Título: Influence of rootstocks on growth, yield, fruit quality and leaf mineral element contents of pear cv. 'Santa Maria' in semi-arid conditions
Fonte: Biol. Res;47:1-8, 2014. graf, tab.
Idioma: en.
Resumo: BACKGROUND: Rootstocks play an essential role to determining orchard performance of fruit trees. Pyrus communisand Cydonia oblonga are widely used rootstocks for European pear cultivars. The lack of rootstocks adapted to different soil conditions and different grafted cultivars is widely acknowledged in pear culture. Cydonia rootstocks (clonal) and Pyrus rootstocks (seedling or clonal) have their advantages and disadvantages. In each case, site-specific environmental characteristics, specific cultivar response and production objectives must be considered before choosing the best rootstock. In this study, the influence of three Quince (BA 29, Quince A = MA, Quince C = MC) and a local European pear seedling rootstocks on the scion yield, some fruit quality characteristics and leaf macro (N, P, K, Ca and Mg) and micro element (Fe, Zn, Cu, Mn and B) content of 'Santa Maria' pear (Pyrus communis L.) were investigated. RESULTS: Trees on seedling rootstock had the highest annual yield, highest cumulative yield (kg tree(-1)), largest trunk cross-sectional area (TCSA), lowest yield efficiency and lowest cumulative yield (ton ha(-1)) in the 10th year after planting. The rootstocks had no significant effect on average fruit weight and fruit volume. Significantly higher fruit firmness was obtained on BA 29 and Quince A. The effect of rootstocks on the mineral element accumulation (N, K, Ca, Mg, Fe, Zn, Cu, Mn and B) was significant. Leaf analysis showed that rootstocks used had different mineral uptake efficiencies throughout the early season. CONCLUSION: The results showed that the rootstocks strongly affected fruit yield, fruit quality and leaf mineral element uptake of 'Santa Maria' pear cultivar. Pear seedling and BA 29 rootstock found to be more prominent in terms of several characteristics for 'Santa Maria' pear cultivar that is grown in highly calcareous soil in semi-arid climate conditions. We determined the highest N, P (although insignificant), K, Ca, Mg, Fe and Cu mineral element concentrations on the pear seedling and BA 29 rootstocks. According to the results, we recommend the seedling rootstock for normal density plantings (400 trees ha(-1)) and BA 29 rootstock for high-density plantings (800 trees ha(-1)) for 'Santa Maria' pear cultivar in semi-arid conditions.
Descritores: Raízes de Plantas/metabolismo
Folhas de Planta/química
Pyrus/classificação
Pyrus/crescimento & desenvolvimento
Pyrus/química
Clima Desértico
Produção Agrícola/métodos
Frutas/metabolismo
-Fósforo/análise
Potássio/análise
Chuva
Solo
Temperatura
Turquia
Zinco/análise
Boro/análise
Cálcio/análise
Cobre/análise
Rosaceae/fisiologia
Plântula/crescimento & desenvolvimento
Plântula/fisiologia
Ferro/análise
Magnésio/análise
Manganês/análise
Nitrogênio/análise
Responsável: CL1.1 - Biblioteca Central


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Texto completo
Id: biblio-950775
Autor: Muradoglu, Ferhad; Gundogdu, Muttalip; Ercisli, Sezai; Encu, Tarik; Balta, Fikri; Jaafar, Hawa ZE; Zia-Ul-Haq, Muhammad.
Título: Cadmium toxicity affects chlorophyll a and b content, antioxidant enzyme activities and mineral nutrient accumulation in strawberry
Fonte: Biol. Res;48:1-7, 2015. graf, tab.
Idioma: en.
Projeto: Yuzuncu Yil Universty of the head of scientific research.
Resumo: BACKGROUND: Cadmium (Cd) is well known as one of the most toxic metals affecting the environment and can severely restrict plant growth and development. In this study, Cd toxicities were studied in strawberry cv. Camarosa using pot experiment. Chlorophyll and malondialdehyde (MDA) contents, catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX) activities and mineral nutrient concentrations were investigated in both roots and leaves of strawberry plant after exposure Cd. RESULTS: Cd content in both roots and leaves was increased with the application of increasing concentrations of Cd. We found higher Cd concentration in roots rather than in leaves. Chlorophyll a and b was decreased in leaves but MDA significantly increased under increased Cd concentration treatments in both roots and leaves. SOD and CAT activities was also increased with the increase Cd concentrations. K, Mn and Mg concentrations were found higher in leaves than roots under Cd stress. In general, increased Cd treatments increased K, Mg, Fe, Ca, Cu and Zn concentration in both roots and leaves. Excessive Cd treatments reduced chlorophyll contents, increased antioxidant enzyme activities and changes in plant nutrition concentrations in both roots and leaves. CONCLUSION: The results presented in this work suggested that Cd treatments have negative effect on chlorophyll content and nearly decreased 30% of plant growth in strawberry. Strawberry roots accumulated higher Cd than leaves. We found that MDA and antioxidant enzyme (CAT, SOD and APX) contents may have considered a good indicator in determining Cd tolerance in strawberry plant.
Descritores: Cádmio/toxicidade
Clorofila/metabolismo
Micronutrientes/metabolismo
Fragaria/efeitos dos fármacos
Antioxidantes/metabolismo
-Potássio/análise
Superóxido Dismutase/análise
Extratos Vegetais/química
Peroxidação de Lipídeos/efeitos dos fármacos
Catalase/análise
Clorofila/análise
Raízes de Plantas/efeitos dos fármacos
Raízes de Plantas/química
Folhas de Planta/efeitos dos fármacos
Folhas de Planta/química
Fragaria/metabolismo
Ascorbato Peroxidases/análise
Clorofila A
Magnésio/análise
Malondialdeído/análise
Manganês/análise
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-1132224
Autor: Ramachandran, Reshmi Geetha; Radhakrishnan, Rajalakshmi.
Título: Anatomical Characterization of Nine Taxa of Genus Acmella Rich. (Toothache Plant) in India
Fonte: Braz. arch. biol. technol;63:e20190083, 2020. tab, graf.
Idioma: en.
Projeto: Kerala State Council for Science, Technology and Environment.
Resumo: Abstract The present study is aimed for anatomical characterization of nine taxa of Acmella to supplement data specifically for its current sectional classification and species circumscriptions. Anatomical characterization of this genus is little explored. This study focuses on internal structure of leaves, petioles, peduncles, stems, roots and cell inclusions to determine its taxonomic importance. In stem anatomy the number of hypodermal collenchymatous layers and the arrangement of parenchymatous cortex together place an important role in the identification of Acmella. Root anatomy was similar in all the examined taxa except in the arrangement of xylem vessels. In A. tetralobata xylem vessels arranged in pentarch fashion while rest of the species possess tetrarch arrangement. Several cellular inclusions such as calcium oxalate crystals and oil bodies were observed. The petioles were crescent shaped having bifacial surfaces with both surfaces pubescent. Peduncles possess ridges and furrows in its outline. The leaves are dorsi ventral and possess single layered epidermal cells covered with cuticle having anomocytic, anisocytic and diacytic types of stomata in both adaxial and abaxial surfaces. The present study provides a tool for the microscopic identification of the genus.
Descritores: Spilanthes oleracea/classificação
Raízes de Plantas/anatomia & histologia
Componentes Aéreos da Planta/anatomia & histologia
Responsável: BR1.1 - BIREME


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Texto completo
Id: biblio-1132226
Autor: Pimentel, Nathalia; Pedroso, Marina Favarin; Lencina, Kelen Haygert; Oliveira, João Marcelo Santos de; Bisognin, Dilson Antônio.
Título: Anatomical Characterization of the Adventitious Roots of Mate (Ilex paraguariensis A. St.-Hil.) Mini-cuttings
Fonte: Braz. arch. biol. technol;63:e20190359, 2020. graf.
Idioma: en.
Resumo: Abstract Leaves of mate is one of the main non-timber forest products marketed in South America, which makes establishment of new plantations of great interest. However, vegetative propagation of mate plantlets presents difficulties, which may be associated with the complexity of adventitious root formation. The aims of this study were to anatomically characterize the adventitious roots of mate-clone mini-cuttings and investigate the relationship of phenols and starch with adventitious rooting competence in mini-cuttings treated or not with indole-butyric acid (IBA). The mini-cuttings of four clones were collected at 0, 30, and 60 days of cultivation, fixed in a solution containing 1% glutaraldehyde and 4% formaldehyde, pre-infiltrated and infiltrated in (2-hydroxyethyl) methacrylate, and sectioned in a microtome. Ferric chloride and toluidine blue were used to detect phenolic compounds and lugol to identify starch. Adventitious roots formed in mini-cuttings treated with IBA presented disorganized xylem and phloem and poles irregularly but exhibited sclerenchyma vessel elements and tracheid cells indicating functionality. Differences in the rhizogenic ability of mate clones mini-cuttings were not due to the presence of anatomical barriers or the accumulation of phenolic compounds but be associated with the presence and distribution of starch grains in vegetative propagules.
Descritores: Raízes de Plantas/crescimento & desenvolvimento
Raízes de Plantas/efeitos dos fármacos
Ácido Butírico/farmacologia
Ilex paraguariensis/crescimento & desenvolvimento
Ilex paraguariensis/efeitos dos fármacos
-Fatores de Tempo
Responsável: BR1.1 - BIREME



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