scholarly journals Phytochemistry, antioxidant potential and antifungal of Byrsonima crassifolia on soil phytopathogen control

2017 ◽  
Vol 78 (1) ◽  
pp. 140-146 ◽  
Author(s):  
B. S. Andrade ◽  
R. Matias ◽  
B. O. Corrêa ◽  
A. K. M. Oliveira ◽  
D. G. F. Guidolin ◽  
...  

Abstract The use of chemical defensives to control fungal diseases has by consequence to impact negatively over the environment and human health, this way, the use of plant extracts with antifungal properties along with proper cultural management makes viable an alternative plant production control, specially for familiar and organic cultures. The objective of this study was to perform phytochemical and antioxidant analysis of Byrsonima crassifolia (canjiqueira) barks and evaluate its antifungal potential over Fusarium solani and Sclerotinia sclerotiorum mycelial growth. The ethanol extract from plants collected in Pantanal, Mato Grosso do Sul, Brazil was submitted to phytochemical prospection, total phenol and flavonoids quantification and antioxidant activiy determination (DPPH). To evaluate antifungal activity concentrations of 800, 1200, 1600, 2000 and 2400 µg 100 mL-1 of ethanol extract were used. Which concentration was separately incorporated in agar (PDA) and shed in Petri dishes, followed by the fungi mycelial disc where the colonies diameter was measured daily. Negatives control with agar without extract and agar with an ethanol solution were used. The B. crassifolia ethanol extract presented inhibitory activity over the fungi studied where concentrations of 800 and 1600 µg 100 mL-1, inhibited 38% of the mycelial growth of F. solani; to S. sclerotiorum the best concentration was 2400 µg 100 mL1, reducing 37.5%. The antifungal bark extract potential of this specie is attributed to phenolic compounds and to triterpenes derivatives.

2020 ◽  
Vol 36 (3) ◽  
Author(s):  
Rosemary Matias ◽  
Valtecir Fernandes ◽  
Bianca Obes Corrêa ◽  
Silvia Rahe Pereira ◽  
Ademir Kleber Morbeck Oliveira

The application of chemical pesticides for the control of fungal diseases results in impacts on the environment and human health. The use of vegetal extracts with antifungal properties for the proper management of crops becomes a viable alternative, mainly for organic and family farming. The objective of this study was to carry out the phytochemical evaluation of Datura inoxia, evaluating its antifungal potential against the mycelial growth of Fusarium solani and Sclerotinia sclerotiorum. The extracts, aqueous and ethanolic, obtained from the leaves of the plant collected in areas of the municipality of Campo Grande, Mato Grosso do Sul, were submitted to phytochemical prospecting and quantification of flavonoids and total phenols. It was evaluated its antifungal activity at concentrations of 800, 1200, 1600, 2000, and 2400 μg 100 mL-1. Each concentration was separately incorporated into BDA agar, poured into Petri dishes, and inoculated with the mycelial disc of the fungus. The diameter of the colonies were measured daily. Two solutions were prepared as control, one containing the solvent added to PDA medium (ethanol solution), and another with only PDA medium (without D. inoxia extract, control). In both extracts were found the same diversity of secondary metabolites (nine classes). The ethanolic extract, a solvent of lower polarity than water, was more efficient in the extraction of these constituents. Alkaloids and phenolic compounds were the most frequent compounds (100%). In relation to antifungal activity, the ethanolic extract provided 100% inhibition of mycelial growth of Sclerotinia sclerotitorum in all concentrations, relative to the control. On the other hand, the growth of Fusarium solani was only negatively affected at the highest concentrations of 800 and 1200 μmL-1 100 mL-1. The antifungal potential of Datura inoxia was probably related to the abundance of alkaloids and phenolic compounds in its chemical constitution that negatively effects the development of the vegetative mycelium.


2017 ◽  
Vol 47 (3) ◽  
Author(s):  
Daiane Martini ◽  
Giselle Feliciani Barbosa ◽  
Rosemary Matias ◽  
Wolff Camargo Marques Filho ◽  
Nayara Zielasko Trombini Garcia

ABSTRACT: Apis melífera L. propolis is a resinous and balsamic material whose biological effects are related to its chemical composition. This chemical composition is greatly influenced by seasonality, so propolis from different seasons and regions has a different chemical composition. The increasing need for natural options to control fungi that cause damage to food crops makes propolis an alternative that deserves more research. In this context, the aim of this study was to evaluate the effect of seasonality on the antifungal potential of propolis collected in Campo Grande, Mato Grosso do Sul, Brazil, on the fungus Lasiodiplodia theobromae . Effects of different concentrations of ethanolic extracts of green propolis on the mycelial growth of the pathogen were evaluated. Concentrations of flavonoids and phenolic compounds in the samples were also determined by spectrophotometric methods. Results showed that the propolis extracts have a different chemical composition, potential fungi static effects on the tested fungus, and that there is interference of seasonality on the mycelial growth of the fungus, pointing to the concentration of 1250µg 100mL-1of the samples collected in the summer, in a first moment, as the most efficient.


2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.


Author(s):  
F. PERBONI ◽  
Carla Regina de Souza FIGUEIREDO ◽  
A. MARQUES ◽  
A. N. MILITÃO ◽  
C. N. JESUS ◽  
...  

2012 ◽  
Vol 11 (1) ◽  
Author(s):  
Paulo Roberto Cimo Queiroz

O espaço correspondente ao atual Estado brasileiro de Mato Grosso do Sul foi incorporado, no século XVI, aos circuitos do Paraguai colonial, mas, já no século XVII, no contexto que S. B. de Holanda denomina refluxo assuncenho, a presença espanhola foi sendo substituída pela luso-brasileira, passando, portanto, essa região a vincular-se, ainda que de m o do inicialmente tênue, ao sudeste da América portuguesa. Em meados d o século XIX, c om a liberação da navegação brasileira pelo rio Paraguai, essa região voltou, de certo modo, a fazer parte do espaço platino. O presente trabalho busca evidenciar que, a despeito das notáveis mudanças induzidas pela livre navegação, esse último período de vinculação ao espaço platino constituiu, na verdade, uma espécie de "hiato", no interior do processo mais longo, representado pela vinculação com o mercado nacional brasileiro.


2020 ◽  
Vol 14 (28) ◽  
pp. 191-208
Author(s):  
Ary Albuquerque Cavalcanti Junior

O presente artigo, realizado com apoio da Fundação Universidade Federal de Mato Grosso do Sul – UFMS/MEC – Brasil, é resultado dos estudos acerca da participação feminina em diferentes frentes de luta contra a ditadura civil-militar brasileira (1964-1985). Ao longo das últimas décadas, importantes contribuições para se pensar o protagonismo feminino durante a ditadura passaram a ser produzidas, permitindo o surgimento de novas perspectivas e abordagens de análise. Assim, ao pensarmos a história das mulheres no referido período, devemos observar os códigos de conduta que as cerceavam e as práticas de resistência que rompiam tanto no cenário político, público, quanto cultural, patriarcal. Assim, o objetivo deste trabalho é discutir a participação e a resistência feminina na Guerrilha do Araguaia.


2020 ◽  
Author(s):  
Carlos Batista Prado ◽  
Jadir Antunes ◽  
Pedro Leão da Costa Neto ◽  
Ricardo Pereira de Melo

A obra Marx Marxismo e Dialética nasceu do III Encontro Nacional dos GT’s Marx e Marxismo da Associação Nacional de Pós-Graduação em Filosofia – ANPOF realizado em Campo Grande, na Universidade Federal de Mato Grosso do Sul, de 9 a 11 de setembro de 2019. Dois encontros do mesmo gênero o antecederam em Fortaleza, na Universidade Federal do Ceará, em 2015 e 2017. Consolida-se, assim, paulatinamente, uma tradição de encontros compartilhados que fortalecem ambos os GT’s que os promovem, a saber: o GT Marxismo e o GT Marx e a Tradição Dialética. O GT Marxismo foi criado em 2004, no XVI Encontro Nacional de Filosofia, realizado em Salvador e o GT Marx e a Tradição Dialética foi criado em 2006, no XVII Encontro Nacional de Filosofia, também realizado em Salvador. Ambos os GT’s, hoje congregam pesquisadores de diversas universidades espalhadas pelas regiões Sudeste, Centro-Oeste, Sul e Nordeste, dentre as quais se destacam a Universidade Estadual de Campinas – Unicamp, a Universidade Federal do Rio de Janeiro – UFRJ, a Universidade Federal de Minas Gerais – UFMG, a Universidade Federal de Uberlândia – UFU, a Pontifícia Universidade Católica de Minas Gerais – PUC Minas, a Universidade Federal do Mato Grosso do Sul – UFMS, a Universidade Estadual do Oeste do Paraná – Unioeste, a Universidade Federal do Ceará – UFC, a Universidade Federal do Rio Grande do Norte – UFRN, a Universidade Federal da Paraíba – UFPB, a Universidade Federal da Bahia – UFBA, etc. Dr. Mauro Castelo Branco de Moura: Prof. Titular do Departamento de Filosofia – UFBA.


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