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Última Megalorhipida leucodactyla (Fabricius) (Lepidoptera: Pterophoridae): first distribution record from Chile and new host plant record Neotropical Entomology Vargas,Héctor A.. The presence of Megalorhipida leucodactyla (Fabricius) (Lepidoptera: Pterophoridae) in Chile is reported for the first time from the Azapa valley, northern Chile. In this locality, some immature stages of M. leucodactyla were found to be associated with Tessaria absinthioides (Hook. & Arn.) DC., Asteraceae, a new host plant record at the species, genus and family level for M. leucodactyla. Tipo: Info:eu-repo/semantics/article Palavras-chave: Pterophoroidea; Biogeography; Neotropic; Asteraceae; Microlepidoptera. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000300019 New distribution record, host plant and notes on natural history of Tomoplagia rudolphi (Lutz & Lima, 1918) (Diptera: Tephritidae) Pap. Avulsos de Zool. (São Paulo) Savaris,Marcoandre; Luz,Felipe da; Lorini,Lisete Maria; Lampert,Silvana. ABSTRACT In the state of Rio Grande do Sul, there are few records of geographical distribution and host plants to species of Tomoplagia Coquillett, as well as other genera of Tephritidae, especially those associated with plants of the family Asteraceae. Here, we report the first occurrence of Tomoplagia rudolphi (Lutz & Lima, 1918) in the state of Rio Grande do Sul, inducing stem galls in Vernonanthura tweediana (Baker) H. Rob. (Asteraceae, Vernonieae), whose plant becomes a new host record for this species. In this way, is increased to nine species of Tomoplagia recorded for Rio Grande do Sul. Biological and morphological data and photos of gall, larvae, pupae at new host and distribution map of the species in Brazil are provided. Tipo: Info:eu-repo/semantics/article Palavras-chave: Tephritinae; Asteraceae; Vernonieae; Galls; Insect-plant interaction. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100243 Soluções nutritivas para cultivo e produção de frutanos em plantas de Vernonia herbacea PAB Cuzzuol,Geraldo Rogério Faustini; Carvalho,Maria Angela Machado; Zaidan,Lilian Beatriz Penteado; Furlani,Pedro Roberto. O crescimento limitado de rizóforos de Vernonia herbacea (Asteraceae) em solução de Hoagland levou à necessidade de estabelecer uma solução nutritiva para o cultivo dessa planta, visando ao incremento da biomassa de seus rizóforos ricos em frutanos. Essa solução (denominada Vernonia), constituída de Ca(NO3)2.4H2O 2,5 mmol L-1, KNO3 2,3 mmol L-1 , KH2PO4 0,52 mmol L-1, Mg(NO3)2.6H2O 1,7 mmol L-1 e Na2SO4 1,3 mmol L-1, foi comparada com a de Hoagland nas forças iônicas de 50%, 100% e 200%. Foram realizadas duas avaliações para análise de crescimento e conteúdo de frutanos. As plantas não sobreviveram até os dois meses na solução de Hoagland 200%. A solução Vernonia diluída duas vezes (50%) foi a mais eficiente para o incremento de massa seca dos rizóforos e... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nutrição mineral; Asteraceae; Cerrado. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000900011 Biological activity of phototoxic compounds in Bidens squarrosaH.B.K. (Asteraceae) Phyton Pérez-Amador,MC; Muñoz Ocotero,V; García Jiménez,F. Phototoxic compounds (polyacetylenes and thiophenes) and their biological activity were determined on Bidens squarrosa plants by measuring their antibacterial and anti-inflammatory potential. Phototoxic compounds were extracted with hexane, characterized by TLC, and their presence confirmed by U.V. spectrum of their extracts and bactericidal potential. Antibacterial activity of the hexane, ethyl acetate and methanol extracts was measured against Bacillus subtilis and Escherichia coli, and their anti-inflammatory potential was determined by the mouse ear edema test. Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Phototoxic compounds; Bactericide activity; 12-O-tetradecanoylphorbol-13-acetate (TPA). Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572008000100009 Essential oil and phototoxic compounds in Clibadium surinamense L. and Montanoa grandiflora D.C. (Asteraceae) Phyton Pérez-Amador,MC; Muñoz,V; Noyola,A; García-Jiménez,F. Two Asteraceae species, Clibadium surinamense L. and Montanoa grandiflora D.C., were analyzed to determine the composition of the essential oil and to search for phototoxic compounds. Three parts of the plants were studied, inflorescence, stems and leaves. Intra and interspecific differences were found in the essential oil composition, which was determined by gas chromatography. In the chromatographic profiles, run for phototoxic compounds, spots for these products were present in the Clibadium surinamense extracts, but were absent in Montanoa grandiflora. From the hexane extract of Clibadium surinamense inflorescence 2 new polyacetylene esters were isolated, ichtyothereol capric ester and its derivate tetrahydroichthyothereol-7'- en-miristic ester. Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Phototoxic compounds; Essential oils. Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572006000100015 Phototoxic compounds and biological activity of extracts from Eupatorium morifolium Mill. (Asteraceae) Phyton Pérez-Amador,MC; Muñoz Ocotero,V; García Jiménez,F. Leaves of Eupatorium morifolium Mill. were analyzed for phototoxic compounds, and the toxicity of their hexane extract was evaluated against Bacillus subtilis. The phototoxic compounds were analyzed by TLC. In the plate, pale blue spots indicated the presence of these compounds. This was confirmed by the UV extract spectrum and the antibacterial activity against Bacillus subtilis. The biological activity of the leaf extracts (hexane, ethyl acetate or methanol) was also studied. The antiinflammatory activity was determined using the edema test on mouse ears, and the bactericide activity was assayed against Bacillus subtilis and Escherichia coli. A strong anti-inflammatory activity was shown by the leaf extracts. The ethyl acetate extract exhibited the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Phototoxic compounds; Bactericide activity; 12-O-tetradecanoylphorbol-13-acetate (TPA). Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572008000100003 Estudio morfoanatómico y micrográfico de Pluchea microcephala R. K. Godfrey (Asteraceae) empleada en medicina tradicional argentina Phyton Bucciarelli,A; Hansen,PV; Cambi,VN. Pluchea microcephala ("cuatrocantos", "lucera") es una especie perenne, nativa del N de Argentina, Bolivia y NO de Perú, comúnmente utilizada para combatir desórdenes digestivos y hepáticos en humanos. Crece en suelos salinos y húmedos, bordeando cursos de agua. Se estudiaron las características morfoanatómicas de hojas, tallos y capítulos, a fin de determinar los principales caracteres diagnósticos para la identificación de esta especie. Se realizaron observaciones de ejemplares de herbario, material disociado y secciones transversales seriadas de material restaurado. Las hojas son decurrentes, anfistomáticas, con tricomas eglandulares septado-flagelados y tricomas glandulares con cuerpo entero biseriado. El mesofilo es isobilateral con glóbulos... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pluchea microcephala; Asteraceae; Morfoanatomía; Caracteres micrográficos; Medicina tradicional argentina. Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572009000200009 Vernonia patensKunth, an Asteraceae species with phototoxic and pharmacological activity Phyton Pérez-Amador,MC; Muñoz Ocotero,V; Pérez Benitez,S; García Jiménez,F. The presence of phototoxic compounds in stems and leaves of young plants of Vernonia patens Kunth was confirmed by TLC. These compounds were in smaller amounts in younger than in adult plants of this species. Only the stems presented specific activity of these compounds from the two study plant organs. It included characteristic UV bands at 200 and 300nm, and phototoxic activity against Bacillus subtilis (ATCC-6633). Stems and leaves of Vernonia patens also showed anti-inflammatory activity and bactericide potential. Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Phototoxic compounds; Bactericide activity; Anti-inflammatory activity. Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572008000100023 Phytochemical and pharmacological studies on Mikania micrantha H.B.K. (Asteraceae) Phyton Pérez-Amador,MC; Muñoz Ocotero,V; Ibarra Balcazar,R; García Jiménez,F. Asteraceae is one of the largest families of Angiospermae, and contains the Mikania genus. Several species of this family contain polyacetylenic and thiophenic compounds which are used as taxonomic markers. Also, their phototoxic activity acts as plant defense mechanism. In this paper we report the absence of these compounds in Mikania micrantha. We also describe the composition of the volatile oil from the seeds and inflorescence in the species. Linalool and α-pinene were the main components of this M. micrantha's essential oil. This study tested the ability of extracts of Mikania micrantha to inhibit the mouse ear inflammation in response to topical application of 12-O-tetradecanoylphorbol-13-acetate (TPA). The antibacterial activity of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mikania micrantha; Asteraceae; Bioactivity; Essential oil; Taxonomic markers; Phototoxic compounds. Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572010000100011 Morphoanatomical functional traits in xerophytic species of a saline environment Phyton Pérez Cuadra,V; Cambi,V. The halophytic community of Salitral de la Vidriera (Buenos Aires Province, Argentina) has species with different morphoanatomical functional traits. The aim of this study was to compare these traits in four species, two Asteraceae (Baccharis spartioides and B. tenella) and two Frankeniaceae (Frankenia juniperoides and F. pulverulenta). Leaves and stems were treated under traditional techniques for anatomical study. Leaves the of Asteraceae and F. pulverulenta were amphistomatic while in F. juniperoides they were hypostomatic. All species showed trichomes and only the Frankeniaceae had salt glands. The mesophyll was isolateral in Asteraceae, and dorsiventral in Frankeniaceae; the number of foliar vascular bundles was variable. The stems of the Asteraceae... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Frankeniaceae; Halophytic species; Functional traits; Anatomy. Ano: 2014 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572014000200022 Phytochemistry and quantification of polyphenols in extracts of the Asteraceae weeds from Diamantina, Minas Gerais state, Brazil Planta Daninha Petacci,F.; Tavares,W.S.; Freitas,S.S.; Teles,A.M.; Serrão,J.E.; Zanuncio,J.C. Asteraceae weeds are rich in chemicals that have biological and pharmaceutical activities. The aims of this work were to describe the phytochemistry and quantify the polyphenols in ethanol extracts from leaves of 12 species of Asteraceae weeds collected in Diamantina, Minas Gerais State, Brazil. The screening of Asteraceae extracts revealed the presence of tannins, steroids, triterpenes, anthocyanins, and flavonoids. The total phenolic content was high in extracts of Lychnophora ericoides (147.97 ± 2.66), Lepidaploa lilacina (141.11 ± 1.99), and Eremanthus elaeagnus (134.61 ± 7.81) and low in extracts of Lychnophora ramosissima (32.65 ± 0.70), and Lychnophora sp. (54.03 ± 0.73). Extracts of Asteraceae weeds from Diamantina could have potential for... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Campos rupestres; Diamantina; Pesticides; Phytochemistry; Polyphenols. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000100002 Atividade relativa da catalase de losna-branca (Parthenium hysterophorus) comparada à de outras espécies daninhas Planta Daninha Carvalho,S.J.P.; Machado,E.C.R.; Marques,B.S.; Silva,A.P.P.; Lima,R.S.O.; Costa,R. Este trabalho foi desenvolvido com o objetivo de avaliar a atividade relativa da catalase em extrato aquoso de losna-branca (Parthenium hysterophorus), bem como comparála à atividade da catalase de outras espécies daninhas. O trabalho constou de três fases, que envolveram a padronização do método, comparação da atividade relativa da catalase de plantas da família Asteraceae e comparação com outras 11 espécies daninhas, sendo estas: Euphorbia heterophylla, Alternanthera tenella, Cenchrus echinatus, Panicum maximum, Amaranthus viridis, Ipomoea hederifolia, Galinsoga parviflora, Bidens pilosa, Sonchus oleraceus, Cyperus rotundus e Commelina benghalensis. Observou-se resposta linear crescente da reação entre extrato aquoso de losna-branca e peróxido de... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Enzima; Paraquat; Peróxido de hidrogênio; Tolerância. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000200019 MANAGEMENT OF PARTHENIUM WEED USING METABOLITES OF Alternaria japonica Planta Daninha JAVAID,A.; MUBEEN,T; BASHIR,U; SHOAIB,A. ABSTRACT Parthenium (Parthenium hysterophorus) is an alien invasive weed infesting many parts of the world including Pakistan. A number of herbicides have been recommended for control of this weed, but these herbicides have issues regarding human health and environmental safety. In the current study, the herbicidal potential of culture filtrates of a fungal species, namely Alternaria japonica, was evaluated against parthenium weed. The fungal species was grown in malt extract broth (MEB) and potato dextrose broth (PDB) for 15 days. Culture filtrates were obtained by passing the materials through muslin cloth followed by filtration through filter paper and then through Millipore filter paper. In laboratory bioassays, the effect of original (X) and diluted... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Congo grass; Fungi; Mycoherbicide; Weed. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100214 Picão-preto: uma planta daninha especial em solos tropicais Planta Daninha Santos,J.B; Cury,J.P. Bidens pilosa está presente em praticamente todo o território brasileiro, além de vários outros habitats tropicais. Entre as características presentes na planta, a abundante e longa produção de propágulos, o fotoblastismo preferencial, o uso eficiente da água, a elevada extração e utilização de nutrientes, bem como características morfofisiológicas específicas, conferem vantagem na competição com as principais culturas anuais e perenes. Devido à plasticidade e flexibilidade adaptativa de B. pilosa e às interações de suas características na determinação da competitividade desse vegetal, torna-se difícil identificar aquelas que realmente se associam com elevada capacidade competitiva e que possuam maior expressividade. Dentro da espécie ocorrem biótipos... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Bidens pilosa; Manejo Integrado de Plantas Daninhas; Polimorfismo germinativo; Resistência a herbicidas. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000500024 Utilização de estruturas secretoras na identificação dos gêneros de Asteraceae de uma vegetação de cerrado Rev. Bras. Bot. Castro,Marília de Moraes; Leitão-Filho,Hermógenes de Freitas; Monteiro,Walkyria Rossi. (Utilização de estruturas secretoras na identificação dos gêneros de Asteraceae de uma vegetação de cerrado). Com o objetivo de se verificar o possível valor taxonômico das estruturas secretoras para espécies de Asteraceae, foi efetuado um levantamento de tipos destas estruturas em folhas de 72 representantes da referida família, que compõem parte da vegetação do cerrado da Reserva Biológica de Moji Guaçu (São Paulo, Brasil). As folhas foram selecionadas e tratadas segundo as técnicas usuais empregadas para materiais herborizados; a região mediana destas peças foi cortada a mão livre, enquanto que folhas inteiras foram diafanizadas e coradas. O levantamento evidenciou ductos, idioblastos, hidatódios e l0 diferentes tipos de tricomas secretores. Avaliados... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Secretory structures; Leaf; Cerrado vegetation. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000200007 Vegetative organ anatomy of Ianthopappus corymbosus Roque & Hind (Asteraceae-Mutisieae) Rev. Bras. Bot. MELO-DE-PINNA,GLADYS F.A.; MENEZES,NANUZA L.. A study on the vegetative organ anatomy of Ianthopappus corymbosus was conducted in order to provide a basis for comparison with the genus Richterago, since this species had been previously included in that genus. The anatomical characters of I. corymbosus that support its exclusion from the genus Richteragon are: epithelial cell organization of adventitious root secretory canals, non-glandular trichomes, and presence of cortical vascular bundles in the stem. In Ianthopappus corymbosus, the underground system consists of rhizophore from which adventitious roots branch off. The subapical meristem of the adventitious root revealed that the ground meristem forms the inner layer which in a meristematic phase, forms 2/3 of the cortex. This layer will... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amyliferous sheath; Asteraceae; Meristematic endodermis; Pericycle fibers; Proendodermis. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002012000014 Microscopic variability in mechanical defence and herbivory response in microphyllous leaves of tropical herb species from Serra do Cipó, Brazil Rev. Bras. Bot. Ribeiro,Sérvio Pontes; Corrêa,Tatiana Lopez; Sousa,Hildeberto Caldas de. Tropical high altitude grasslands present several species with both microphyllous and highly sclerophyllous leaves, and co-occur in specific soil patches, thus exposed to identical environments. In this article we describe herbivory among co-occurring microphyllous species in a tropical high altitude grassland ecosystem of Serra do Cipó, Minas Gerais state, and we tested the effect of variable anatomic traits on leaf herbivory patterns. Leaf anatomical traits were investigated for Baccharis imbricata Heering , Lavoisiera imbricata DC. and L. subulata Triana (focal species). Herbivory was measured from branches and leaves of individual plants and compared among co-occurring species within one multispecific shrub patch and among L. subulata individuals from... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Fibres; Insect-plant interaction; Melastomataceae; Sclerophylly. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000200005 Variation between three Eremanthus (Asteraceae) species in their ability to form a seed bank Rev. Bras. Bot. Velten,Simone Batalha; Garcia,Queila Souza. Knowledge on seed bank function is fundamental for understanding the species regeneration patterns. This investigation was carried out to compare the ability of Eremanthus elaeagnus (Mart. ex DC.) Schultz-Bip, E. glomerulatus Less., and E. incanus (Less.) Less. to form a soil seed bank. Seeds (aquenes) of each of these three species were collected, stored in the laboratory and subsequently buried in the same area where they were collected, inside nylon bags. The bags were collected monthly or bimonthly for germination tests under continuous light and also in darkness at 20 °C (E. elaeagnus e E. glomerulatus) and at 25 °C (E. incanus). After 12 months, a further series of tests compared the germination of achenes that had been buried in soil and compared... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Buried seeds; Eremanthus; Germination; Seed bank. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000400016 Crescimento e conteúdo de frutanos em plantas de Vernonia herbacea (Vell.) Rusby submetidas à adubação nitrogenada Rev. Bras. Bot. Cuzzuol,Geraldo R.F.; Carvalho,Maria Angela M.; Barbedo,Claudio J.; Zaidan,Lilian B.P.. Vernonia herbacea acumula altas concentrações de frutanos do tipo inulina em seus órgãos subterrâneos de reserva, denominados rizóforos. Foi estudada a influência da adubação nitrogenada no crescimento dessa espécie e na produção de frutanos. Plantas obtidas a partir de fragmentos de rizóforos foram cultivadas em área de cerrado onde receberam três doses de nitrogênio: 6, 12 e 24 kg N.ha-1 na forma de (NH4)2SO4. Plantas jovens, com seis meses de idade, mostraram aumento em altura, área foliar e massa seca da parte aérea e dos rizóforos em resposta ao aumento da dose de nitrogênio. Por outro lado, o teor de frutanos decresceu com o aumento da concentração do nitrogênio. Após doze meses de cultivo, o crescimento das plantas foi estimulado apenas nas doses... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Cerrado; Frutano; Inulina; Crescimento vegetal. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000100009 Meristematic endodermis and secretory structures in adventitious roots of Richterago Kuntze (Mutisieae-Asteraceae) Rev. Bras. Bot. Melo-de-Pinna,Gladys F.A.; Menezes,Nanuza L.. The meristematic endodermis in adventitious roots of Richterago species originates in one of the fundamental meristem cells, which undergo sucessive anticlinal and periclinal divisions to build the inner cortex. The meristematic endodermis or proendodermis remains as a meristematic layer until its differentiation into endodermis, with Casparian strip. When sieve elements differentiate, endodermic secretory canals of esquizogenous origin are present at the region adjacent to primary phloem. Articulated laticifers, with cells perforated at both terminal and transversal walls, also occur during initial phases of secondary development. Presence of inulin as reserve carbohydrate in the inner cortex and vascular tissue may be related to abiotic factors, as an... Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Laticifers; Meristematic endodermis; Richterago; Secretory canals. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000100002 Registros recuperados: 127 Primeira ... 1 2 3 4 5 6 7 ... Última

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