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au:OLIVEIRA, ADRIANA F.

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Irrigation management, light interception, and nitrogen in Tanzania grass cultivation
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Cajá, Danielle F.

; Silva, Rosilene A. da

; Oliveira, Arthur A. S. de

; Santos, Adriana da S.

; Bezerra, Marcio G. da S.

; Sá, Francisco V. da S.

Revista Caatinga

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2023, Volume 36 N. 4 Pages 857 - 864

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

ABSTRACT Management of nitrogen fertilization and light interception of pastures contributes to forage production in regions with low water availability. Therefore, the objective was to evaluate the effect of different nitrogen doses and light interception levels on the growth of Panicum maximum cv. Tanzania under different irrigation managements. The experiment was carried out in a greenhouse, using a factorial scheme (5 x 2 x 2), corresponding to five irrigation depths (40, 60, 80, 100, and 120% of actual evapotranspiration), two canopy light interception levels (90 and 95%), and two nitrogen doses (300 and 600 kg N ha-1 year-1). The highest biomass production occurs under irrigation with 120% of evapotranspiration. However, the best structural characteristics (tillering and number of leaves) occur with 100% of evapotranspiration, regardless of nitrogen dose and light interception level. Interruption of growth with 95% of incident light and fertilization with 600 kg N ha-1 year-1 promoted greater tillering, number of leaves and leaf length, regardless of the irrigation level. Tanzania grass management with an interruption of growth with 95% of incident light, 600 kg N ha-1 year-1, and irrigation with 80% of actual evapotranspiration led to tillering and number of leaves only 11% lower than the values found in the other treatments irrigated with 100% of actual evapotranspiration. Interruption of growth with 95% of incident light and fertilization with 600 kg N ha-1 year-1 improve the performance of Tanzania grass under deficit irrigation.

RESUMO O manejo da adubação nitrogenada e interceptação luminosa das pastagens contribuem para produção de forragem em regiões com baixa disponibilidade de água. Portanto, objetivou-se avaliar o efeito de diferentes doses de nitrogênio e níveis de interceptação luminosa no crescimento do capim Panicum maximum cv. Tanzânia sob diferentes manejos de irrigação. O experimento foi conduzido em casa de vegetação, em esquema fatorial (5 x 2 x 2), relativo a cinco lâminas de irrigação (40, 60, 80, 100 e 120% da evapotranspiração real), dois níveis de interceptação de luz pelo dossel (90 e 95%) e duas doses de nitrogênio (300 e 600 kg N ha-1 ano-1). A maior produção de biomassa ocorre com 120% da evapotranspiração. Porém as melhores características estruturais (perfilhamento e número de folhas) ocorrem com 100% da evapotranspiração, independente da dose de nitrogênio e nível de interceptação luminosa. A interrupção do crescimento com 95% de luz incidente e a adubação com 600 kg N ha-1 ano-1 proporcionaram maior perfilhamento, número e comprimento de folhas do capim, independentemente da lâmina de irrigação. O capim Tanzânia com interrupção do crescimento com 95% da luz incidente, 600 kg N ha-1 ano-1 e irrigação com 80% da evapotranspiração obteve perfilhamento e número de folhas apenas 11% inferior aos outros tratamentos irrigados com 100% da evapotranspiração. A interrupção do crescimento com 95% da luz incidente e adubação com 600 kg N ha-1 ano-1 melhoram o desempenho do capim Tanzânia sob irrigação deficitária.

https://doi.org/10.1590/1983-21252023v36n413rc

Maternity in the Brazilian CV Lattes: when will it become a reality?
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STANISCUASKI, FERNANDA

; ZANDONÀ, EUGENIA

; REICHERT, FERNANDA

; SOLETTI, ROSSANA C.

; OLIVEIRA, LETICIA DE

; RICACHENEVSKY, FELIPE K.

; TAMAJUSUKU, ALESSANDRA S.K.

; KMETZSCH, LIVIA

; SCHWARTZ, IDA V.D.

; WERNECK, FERNANDA P.

; LUDWIG, ZELIA M.C

; LIMA, ELIADE F.

; INFANGER, CAMILA

; NEUMANN, ADRIANA

; BRANDÃO, ALESSANDRA

; WIGGERS, GIULIA A.

; SEIXAS, ADRIANA

; MELLO-CARPES, PAMELA B.

Anais da Academia Brasileira de Ciências

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2021, Volume 93 N. 1 elocation e20201370

Abstract: En | Text: En | PDF: En

https://doi.org/10.1590/0001-3765202120201370 1955 downloads

Chemical composition and biological activity of the essential oil of the fruits Pimenta dioica against formae speciales of fungus Fusarium oxysporum
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Barros Gomes, Paulo Roberto

; da Silva Barros Junior, Francisco Reivilândio

; Batista Reis, Jonas

; Oliveira Everton, Gustavo

; Santos de Oliveira, Rayone Wesly

; Costa Louzeiro, Hilton

; Fontenele, Maria Alves

; Crispim de Freitas, Adriana

; do Livramento de Paula, Maria

; Mouchrek Filho, Victor Elias

Revista Colombiana de Ciencias Químico - Farmacéuticas

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apr 2020, Volume 49 N. 1 Pages 89 - 100

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

RESUMEN Determinamos la composición química y exploramos la hipótesis de que el aceite esencial de los frutos de Pimenta dioica inhibe el desarrollo micelial de los hongos Fusarium oxysporum f. sp. lycopersici, F. oxysporum f. sp. passiflorae, F. subglutinans f. sp. ananas, F. oxysporum f. sp. vasinfectum e F. oxysporum f. sp. Cubense. Para hacer esto, extrajimos el aceite por hidrodestilación, identificamos sus componentes por cromatografía de gases acoplada a espectrometría de masas (GC-EM) y determinamos la actividad fúngica contra cinco formas especiales de especies de Fusarium. Los resultados mostraron que el aceite tenía 76,88% de eugenol e inhibió el desarrollo micelial de hongos hasta 97,78% en un promedio de 7,2 días. Por lo tanto, el aceite es un potencial fungicida natural.

SUMMARY We determined the chemical composition and explored the hypothesis that the essential oil of the fruits of Pimenta dioica inhibits the mycelial development of fungi Fusarium oxysporum f. sp. lycopersici, F. oxysporum f. sp. passiflorae, F. subglutinans f. sp. ananas, F. oxysporum f. sp. vasinfectum e F. oxysporum f. sp. Cubense. To do this, we extracted the oil by hydrodistillation, identified its components by gas chromatography coupled to mass spectrometry (GC-MS) and determined the fungal activity against five special forms of Fusarium species. The results showed that the oil had 76.88% of eugenol and inhibited the mycelial development of fungi up to 97.78% in an average of 7.2 days. Therefore, oil is a potential natural fungicide.

https://doi.org/10.15446/rcciquifa.v49n1.87010 209 downloads

Passive Cigarette Smoking Impact on Blood Pressure Response to Epinephrine and Felypressin in 1K1C Hypertensive Rats Treated or not with Atenolol
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Fleury, Camila A.

; Almeida, Elizandra P. M.

; Dionisio, Thiago J.

; Calvo, Adriana M.

; Oliveira, Gabriela M.

; Amaral, Sandra L.

; Santos, Carlos F.

; Faria, Flávio A. C.

Arquivos Brasileiros de Cardiologia

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feb 2020, Volume 114 N. 2 Pages 295 - 303

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Fundamento: O tabagismo geralmente está associado à hipertensão e pode modificar a resposta vasoconstritora. Objetivo: O presente estudo teve como objetivo analisar e comparar a interação do tabagismo passivo e hipertensão sobre os efeitos da epinefrina e felipressina na pressão arterial após injeção intravascular. Métodos: Ratos Wistar machos de 45 dias tiveram a artéria renal principal esquerda parcialmente obstruída e o rim direito removido (modelo 1K1C). Os ratos foram colocados na câmara para exposição ao tabagismo passivo (10 cigarros) durante 10 minutos (6 dias por semana). Ratos hipertensos receberam atenolol (90 mg/kg/dia) por gavagem durante duas semanas. A resposta hipotensora e hipertensiva, a duração da resposta e a frequência cardíaca foram registradas a partir da medida dos valores diretos da pressão arterial. O nível de significância foi de 5%. Resultados: O tabagismo passivo aumentou a resposta hipertensiva máxima à epinefrina em ratos normotensos e ratos 1K1C tratados com atenolol e à felipressina apenas em ratos 1K1C tratados com atenolol; também reduziu a resposta hipotensiva à epinefrina. A epinefrina aumentou a frequência cardíaca em ratos fumantes passivos ou não-fumantes, normotensos e hipertensos. Comparando os dois vasoconstritores, a epinefrina apresentou maior resposta hipertensiva em fumantes normotensos, ratos 1K1C fumantes e não fumantes tratados com atenolol. No entanto, em ratos normotensos e não fumantes, a felipressina apresentou um efeito hipertensivo maior e mais prolongado. Conclusões: Nossos resultados sugerem que o tabagismo passivo pode reduzir a vasodilatação da epinefrina e aumentar a resposta hipertensiva quando comparado à felipressina. Portanto, a felipressina pode ser segura para pacientes hipertensos, com o objetivo de evitar a interação entre taquicardia e atenolol, mas para pacientes normotensos e não-fumantes, a epinefrina pode ser mais segura que a felipressina.

Abstract Background: Cigarette smoking is usually associated with hypertension and may modify vasoconstrictor response. Objective: The present study aimed to analyze and compare the interaction of passive cigarette smoking and hypertension on epinephrine and felypressin blood pressure effects after intravascular injection. Method: 45-day male Wistar rats had the main left renal artery partially constricted and the right kidney removed (1K1C model). Rats were placed in the chamber for exposition to passive cigarette smoking (10 cigarettes) during 10 min (6 days a week). Hypertensive rats received atenolol (90 mg/kg/day) by gavage for two weeks. Hypotensive and hypertensive response, response duration and heart rate were recorded from direct blood pressure values. The significance level was 5%. Results: Passive cigarette smoking increased maximal hypertensive response to epinephrine in normotensive and 1K1C-atenolol treated rats and to felypressin only in 1K1C-atenolol treated rats; it also reduced epinephrine hypotensive response. Epinephrine increased heart rate in normotensive and hypertensive passive smokers or non-smoker rats. Comparing the two vasoconstrictors, epinephrine showed greater hypertensive response in normotensive smokers, 1K1C-atenolol treated smokers and non-smokers. However, in normotensive-nonsmoker rats, felypressin showed a greater and longer hypertensive effect. Conclusions: Our results suggest that passive cigarette smoking may reduce epinephrine vasodilation and increase hypertensive response when compared to felypressin. Therefore, felypressin may be safe for hypertensive patients to avoid tachycardia and atenolol interaction, but for normotensive and non-smoker patients, epinephrine may be safer than felypressin.

https://doi.org/10.36660/abc.20180433 908 downloads

Anti-Leishmania amazonensis activity of the terpenoid fraction from Eugenia pruniformis leaves
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ALBUQUERQUE, RICARDO D.D.G.

; OLIVEIRA, ADRIANA P.

; FERREIRA, CHRISTIAN

; PASSOS, CARLOS L.A.

; FIALHO, ELIANE

; SOARES, DEIVID C.

; AMARAL, VERONICA F.

; BEZERRA, GABRIELLE B.

; ESTEVES, RICARDO S.

; SANTOS, MARCELO G.

; ALBERT, ANDRÉ L.M.

; ROCHA, LEANDRO

Anais da Academia Brasileira de Ciências

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2020, Volume 92 N. 4 elocation e20201181

Abstract: En | Text: En | PDF: En

Abstract Leishmaniasis is caused by protozoan parasites belonging to the genus Leishmania and includes cutaneous, mucocutaneous and visceral clinical forms. Drugs currently available for leishmaniasis treatment present high toxicity, and development of parasite resistance. Plants constitute an important source of compounds with leishmanicidal potential. This study aimed to evaluate the anti-Leishmania amazonensis activity of the terpenoid fraction of Eugenia pruniformis leaves (TF-EpL). TF-EpL was active against the promastigote and intracellular amastigote forms of L. amazonensis with IC50(24h) value of 43.60μg/mL and 44.77μg/mL, respectively. TF-EpL altered the cell cycle of the parasite, increasing 2.32-fold the cells in the Sub-G0/G1 phase. TF-EpL also changed the ΔΨm and increased ROS and the number of annexin-V-PI positive promastigotes, which suggests incidental death. β-sitosterol, ursolic acid, corosolic acid and asiatic acid were isolated from TF-EpL. The results showed the antileishmanial activity of E. pruniformis terpenoids and its potential for further studies as a source of new drugs for leishmaniasis.

https://doi.org/10.1590/0001-3765202020201181 572 downloads

Treatment outcomes of pulp revascularization in traumatized immature teeth using calcium hydroxide and 2% chlorhexidine gel as intracanal medication
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PEREIRA, Andrea Cardoso

; OLIVEIRA, Matheus Lima de

; CERQUEIRA-NETO, Ana Carolina C. L.

; GOMES, Brenda P. F. A.

; FERRAZ, Caio Cezar Randi

; ALMEIDA, José Flávio Affonso de

; MARCIANO, Marina Angélica

; DE-JESUS-SOARES, Adriana

Journal of Applied Oral Science

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2020, Volume 28 elocation e20200217

Abstract: En | Text: En | PDF: En

Abstract Objective Pulp revascularization is an effective treatment for immature necrotic teeth. Calcium hydroxide has been used in pulp revascularization as an intracanal medication due to its antimicrobial action and the non-exhibition of crown discoloration and cytotoxicity for stem cells from the apical papilla. Our study aimed to investigate the clinical success and quantitative radiographic changes of root development in immature traumatized teeth using calcium hydroxide plus 2% chlorhexidine gel as intracanal medication. Methodology In this retrospective study, 16 patients were treated with a standardized pulp revascularization protocol. Calcium hydroxide and 2% chlorhexidine gel were manipulated in a 1:1 (v/v) ratio and inserted into root canals with Lentulo spirals (Dentsply Maillefer, Baillaigues, Switzerland). Patients were followed up for a period from 9 to 36 months for the evaluation of clinical and radiological data. Radiographic measurements of root length, root width, apical diameter, and MTA placement from the apex were quantified using software ImageJ. Wilcoxon test and t-test were used, according to nonparametric or parametric data, respectively, for changes over time in root length, root width, and apical diameter. Results Fifteen teeth survived during the follow-up period (93.75%) and met the criteria for clinical success. Although the changes seem to be very small in many cases, significant increases in the average root length (14.28%, p<0.0001), root width (8.12%, p=0.0196), and decrease in apical diameter (48.37%, p=0.0007) were observed. MTA placement from the apex and age at the time of treatment was not significantly associated with the quantitative radiographic outcomes. Conclusions Pulp revascularization in traumatized immature teeth treated with calcium hydroxide plus 2% chlorhexidine gel as intracanal medication had high success and survival rates, showing periodontal healing and resolution of signs and symptoms. However, concerning the continued root development, the outcomes can still be considered unpredictable.

https://doi.org/10.1590/1678-7757-2020-0217 1201 downloads

Growth and physiology of maize under water salinity and nitrogen fertilization in two soils
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Braz, Régis dos S.

; Lacerda, Claudivan F. de

; Assis Júnior, Raimundo N. de

; Ferreira, Jorge F. da S.

; Oliveira, Adriana C. de

; Ribeiro, Aureliano de A.

Revista Brasileira de Engenharia Agrícola e Ambiental

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dec 2019, Volume 23 N. 12 Pages 907 - 913

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A adubação nitrogenada, em geral, minimiza os efeitos da salinidade às plantas, mas a ação mitigadora depende da espécie vegetal, cultivar, textura do solo e idade das plantas, entre outros fatores. Assim, objetivou-se avaliar os efeitos da salinidade da água de irrigação e adubação nitrogenada na fisiologia e crescimento do milho (Zea mays) em solos com texturas diferentes. O experimento foi realizado em casa de vegetação em Fortaleza, CE, utilizando-se colunas de solo de policloreto de vinila - PVC (100 x 20 cm). O delineamento foi inteiramente casualizado usando o fatorial 2 x 2 x 4, referente a dois solos, um Argissolo Vermelho-Amarelo e um Neossolo Quartzarênico, doses de nitrogênio de 105 e 210 kg ha-1, sob irrigação com águas de salinidade 0,5, 2,0, 4,0 e 6,0 dS m-1, com quatro repetições. Com exceção do diâmetro do caule, a salinidade da água prejudicou o crescimento e as trocas gasosas foliares das plantas. O Argissolo proporcionou melhores respostas no crescimento e fisiologia em comparação ao Neossolo. As doses de nitrogênio não mitigaram as variáveis de crescimento, exceto a biomassa radicular. As trocas gasosas aumentaram com a maior dose de nitrogênio, sem interação com a salinidade.

ABSTRACT The nitrogen fertilization, in general, minimizes the effects of salinity on plants, but the mitigating action depends on plant species, cultivar, soil texture and plant age, among other factors. The objective of this study was to evaluate the effects of irrigation water salinity and nitrogen fertilization on maize physiology and growth (Zea mays) in soils with different textures. The experiment was carried out in a greenhouse in Fortaleza City, CE, Brazil, in PVC soil columns (100 x 20 cm). The design was completely randomized using the factorial 2 x 2 x 4, referring to two soils, an Ultisol and a Quartzipsamment, nitrogen doses of 105 and 210 kg ha-1, under irrigation with saline water of 0.5, 2.0, 4.0 and 6.0 dS m-1, with four repetitions. With the exception of stem diameter, salinity of water impaired plant growth and leaf gas exchanges. The Ultisol provided better growth and physiological responses compared to the Quartzipsamment. The nitrogen doses did not mitigate growth variables except root biomass. The gas exchanges increased with the highest nitrogen dose, without interaction with the salinity.

https://doi.org/10.1590/1807-1929/agriambi.v23n12p907-913 1034 downloads

1º Posicionamento Brasileiro sobre o Impacto dos Distúrbios de Sono nas Doenças Cardiovasculares da Sociedade Brasileira de Cardiologia
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Drager, Luciano F.

; Lorenzi-Filho, Geraldo

; Cintra, Fatima Dumas

; Pedrosa, Rodrigo P.

; Bittencourt, Lia R. A.

; Poyares, Dalva

; Carvalho, Carolina Gonzaga

; Moura, Sonia Maria Guimarães Pereira Togeiro

; Santos-Silva, Rogerio

; Bruin, Pedro F. C. de

; Geovanini, Glaucylara R.

; Albuquerque, Felipe N.

; Oliveira, Wercules Antonio Alves de

; Moreira, Gustavo A.

; Ueno, Linda Massako

; Nerbass, Flávia Baggio

; Rondon, Maria Urbana Pinto Brandão

; Barbosa, Eline Rozária Ferreira

; Bertolami, Adriana

; Paola, Angelo Amato Vincenzo de

; Marques, Betânia Braga Silva

; Rizzi, Camila Futado

; Negrão, Carlos Eduardo

; Uchôa, Carlos Henrique Gomes

; Maki-Nunes, Cristiane

; Martinez, Denis

; Fernández, Edmundo Arteaga

; Maroja, Fabrizio U.

; Almeida, Fernanda R.

; Trombetta, Ivani C.

; Storti, Luciana J.

; Bortolotto, Luiz Aparecido

; Mello, Marco Túlio de

; Borges, Melania Aparecida

; Andersen, Monica Levy

; Portilho, Natanael de Paula

; Macedo, Paula

; Alves, Rosana

; Tufik, Sergio

; Fagondes, Simone C.

; Risso, Thaís Telles

Arquivos Brasileiros de Cardiologia

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aug 2018, Volume 111 N. 2 Pages 290 - 340

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.5935/abc.20180154 8719 downloads

Chemical composition of hays of the Caatinga shrub legumes mororó and sabiá from different parts of the plant
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DE OLIVEIRA, OSNIEL F.

; DE LIMA, AMANDA F.

; DOS SANTOS, MÉRCIA V.F.

; GUIM, ADRIANA

; DA CUNHA, MÁRCIO V.

; LIRA, MÁRIO DE A.

Tropical Grasslands-Forrajes Tropicales

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aug 2018, Volume 6 N. 2 Pages 111 - 116

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen En la región semiárida del nordeste de Brasil, las plantas nativas son una fuente importante de forraje. El objetivo de este estudio fue evaluar las características químicas de los henos de las leguminosas arbustivas nativas: sabiá (Mimosa caesalpiniifolia Benth.) y mororó [Bauhinia cheilantha (Bong.) Steud.], utilizando diferentes fracciones de las plantas: solo hojas y hojas más ramificaciones delgadas (<8 mm diámetro) de tallos. Los análisis incluyeron: concentraciones de materia seca (MS), proteína cruda (PC), fibra detergente neutra (FDN), extracto de éter (EE), ceniza, nutrientes digestibles totales (NDT) y carbohidratos no fibrosos (CNF). El heno de hojas de sabiá presentó mayor concentración de PC (182 g/kg de MS) que el heno de hojas de mororó (126 g/kg de MS); no obstante en ambas leguminosas las concentraciones de PC fueron similares cuando se analizaron hojas más ramificaciones de tallos (106 g/kg de MS en promedio). Las concentraciones de FDN (368 g/kg de MS), CNF (418 g/kg de MS) y NDT (481 g/kg de MS) del heno de hojas de mororó fueron superiores a las del heno de hojas de sabiá (465, 258 y 311 g/kg de MS, respectivamente). Los resultados sugieren que en la región semiárida de Brasil estas leguminosas nativas, conservadas como heno durante el período de crecimiento, pueden proporcionar un alimento suplementario de aceptable valor nutritivo durante el período de baja disponibilidad y calidad de forraje. Sin embargo, se necesitan muestreos adicionales de un rango de fases de crecimiento de las plantas y sitios tanto para confirmar estos resultados preliminares como para proporcionar datos sobre producción de MS. Además se requieren estudios de alimentación con rumiantes para evaluar el efecto de los henos en la producción animal.

Abstract Native forages are important feed sources in the northeastern semi-arid region of Brazil. The objective of this study was to evaluate the chemical characteristics of hays made from the native shrub legumes, sabiá (Mimosa caesalpiniifolia Benth.) and mororó [Bauhinia cheilantha (Bong.) Steud.], using different plant fractions: leaves only and leaves plus twigs. Analyses carried out were: concentrations of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), ether extract (EE), ash, total digestible nutrients (TDN) and non-fiber carbohydrates (NFC). Sabiá leaf hay contained greater CP concentration (182 g/kg DM) than mororó leaf hay (126 g/kg DM) but hay made from leaf plus twigs showed similar CP for both legumes (mean 106 g/kg DM). Concentrations of NDF (368 g/kg DM), NFC (418 g/kg DM) and TDN (481 g/kg DM) of mororó leaf hay were superior to those of sabiá leaf hay (465, 258 and 311 g/kg DM, respectively). The findings suggest that these native legumes can be conserved as hay during the growing season to provide a supplementary feed with acceptable nutritive value for feeding during the period of inadequate feed availability and quality in semi-arid Brazil. However, more samples from a range of growth stages and locations are needed to confirm these preliminary findings and to provide data on possible yields, while more feeding studies with ruminants are needed to confirm the preliminary data in terms of liveweight performance.

https://doi.org/10.17138/tgft(6)111-116 244 downloads

10.

Variedades de mandioca sob concentrações de salinidade na água de irrigação, em cultivo protegido
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Oliveira, Leandro M.

; Amaral, Cláudio Lúcio F.

; Viana, Anselmo E. S.

; Cardoso, Adriana Dias

; Guedes, Murilo Oliveira

; Pessoa, Mayara Cristina B.

; Prates, Caio Jander N.

Revista de Ciências Agrárias

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jun 2018, Volume 41 N. 2 Pages 251 - 260

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

A salinidade afeta negativamente o crescimento e desenvolvimento das culturas agrícolas e a produtividade das espécies cultivadas, pois estes processos são limitados pelo déficit hídrico, toxicidade provocada por iões e desequilíbrio nutricional. Porém, existem poucos estudos da cultura da mandioca que avaliem a sua tolerância em condições de stresse salino. Nestas circunstâncias, o objetivo deste trabalho foi comparar o comportamento de variedades de mandioca sob concentrações de salinidade na água de irrigação em cultivo protegido. O ensaio foi conduzido entre os meses de abril a agosto de 2016, na Universidade Estadual do Sudoeste da Bahia, campus de Vitória da Conquista- BA. Os tratamentos consistiram de cinco variedades (BRS Mulatinha, Platinão, BRS Poti Branca, Sergipe e BRS Verdinha) submetidas a quatro níveis de condutividade elétrica da água de irrigação (0; 2,0; 4,0; 6,0 dS m-1), no delineamento experimental em blocos casualizados, com 4 repetições, em esquema fatorial 5 x 4. A unidade experimental foi formada por um vaso (1 planta por vaso). Após 120 dias, foram avaliadas as características: altura média das plantas; diâmetro do caule; massa seca do caule, folhas e raízes. Nas condições experimentais empregadas, as variedades Sergipe e Platinão se mostraram superiores e todas as características avaliadas foram influenciadas negativamente.

Salinity adversely affects the growth and development of agricultural crops and the productivity of cultivated species, as these processes are limited by water deficit, ion-induced toxicity and nutritional imbalance. However, there are few studies of the cassava crop evaluating its tolerance under conditions of saline stress. In this work, the objective of this work was to compare the behavior of cassava varieties under salinity concentrations in irrigation water in protected cultivation. The experiment was conducted between April and August of 2016, at the State University of Southwest of Bahia, campus of Vitória da Conquista-BA. The treatments consisted of five varieties (BRS Mulatinha, Platinão, BRS Poti Branca, Sergipe and BRS Verdinha) submitted to four levels of irrigation water salinity (0, 2.0, 4.0, 6.0 dS m-1) , In the experimental design in randomized blocks, with 4 replicates, composing factorial 5 x 4. The experimental unit was formed by a pot (1 plant per pot). After 120 days, the following characteristics were evaluated: average plant height; stem diameter; dry mass of the stem, leaves and roots. In the experimental conditions used, the Sergipe and Platinão varieties were superior and all evaluated characteristics were influenced negatively.

https://doi.org/10.19084/RCA17124 771 downloads

11.

Quantitative and qualitative responses of Catharanthus roseus to salinity and biofertilizer
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Neves, Antônia L. R.

; Lacerda, Claudivan F. de

; Oliveira, Adriana C. de

; Sousa, Carlos H. C.

; Oliveira, Francisco I. F.

; Ribeiro, Maria da S. de S.

Revista Brasileira de Engenharia Agrícola e Ambiental

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jan 2018, Volume 22 N. 1 Pages 22 - 26

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO O desenvolvimento da agricultura no semiárido nordestino depende, sobretudo, da exploração correta e do uso eficiente dos recursos naturais. Objetivou-se avaliar os efeitos do uso de águas salinas, em solo adubado com biofertilizante bovino, sobre as respostas morfofisiológicas e na qualidade (análise sensorial) de plantas de Boa noite (Catharanthus roseus). Usou-se o delineamento inteiramente casualizado com tratamentos arranjados em parcelas subdivididas, sendo as parcelas formadas por cinco níveis de salinidade da água de irrigação (0,5; 2,5; 5,0; 7,5 e 10 dS m-1) e as subparcelas por duas frequências de aplicação da dose de 150 mL de biofertilizante bovino líquido por vaso (dividida em uma e cinco vezes), com cinco repetições. As variáveis analisadas foram: trocas gasosas foliares índice relativo de clorofila, biometria, matéria seca de folhas, hastes, flores e raízes e análise sensorial (aparência geral e preferência dos compradores). Com as análises quantitativas (crescimento e fisiológicas) e qualitativas (análise sensorial), notou-se que plantas de Catharanthus roseus de cor branca podem ser produzidas utilizando-se água salina em nível de 2,5 dS m-1, sendo as plantas deste tratamento as preferidas dos julgadores na análise sensorial. A frequência de aplicação do biofertilizante não atenuou os efeitos da salinidade. Desta forma, pode-se aplicar o biofertilizante bovino líquido de uma única vez, diminuindo custos.

ABSTRACT The development of agriculture in the northeastern semi-arid region depends, at least in part, on the correct exploitation and efficient use of natural resources. The objective of this study was to evaluate the effects of the use of saline water on morphophysiological responses and sensory analysis of ‘Boa noite’ plants (Catharanthus roseus) in soil fertilized with bovine biofertilizer. A completely randomized design was used in the split plot arrangement, the plots being formed by the five irrigation water salinity levels (0.5, 2.5, 5.0, 7.5 and 10 dS m-1), and the subplots by two frequencies of application of the 150 mL pot-1 of liquid bovine biofertilizer (divided into one and five times), with five replicates. The analysed variables were: leaf gas exchange relative chlorophyll index, biometry, dry matter (leaf, stems, flowers and roots) and sensory analysis (general appearance and buyers’ preference). Quantitative (growth and physiological) and qualitative (sensory analysis) responses show that Catharanthus roseus plants can be produced using saline water at the level of 2.5 dS m-1, and the plants of this treatment were preferred by the judges in sensory analysis. Biofertilizer application frequency did not attenuate the effects of salinity. Therefore, the liquid bovine biofertilizer can be applied all at once, reducing costs.

https://doi.org/10.1590/1807-1929/agriambi.v22n1p22-26 1875 downloads

12.

A possible relationship between gluconeogenesis and glycogen metabolism in rabbits during myocardial ischemia
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AGUIAR, RAQUEL R. DE

; VALE, DANIELA F.

; SILVA, RENATO M. DA

; MUNIZ, YOLANDA P.

; ANTUNES, FERNANDA

; LOGULLO, CARLOS

; OLIVEIRA, ANDRÉ L.A.

; ALMEIDA, ADRIANA J. DE

Anais da Academia Brasileira de Ciências

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sep 2017, Volume 89 N. 3 Pages 1683 - 1690

Abstract: En | Text: En | PDF: En

ABSTRACT Ischemia is responsible for many metabolic abnormalities in the heart, causing changes in organ function. One of modifications occurring in the ischemic cell is changing from aerobic to anaerobic metabolism. This change causes the predominance of the use of carbohydrates as an energy substrate instead of lipids. In this case, the glycogen is essential to the maintenance of heart energy intake, being an important reserve to resist the stress caused by hypoxia, using glycolysis and lactic acid fermentation. In order to study the glucose anaerobic pathways utilization and understand the metabolic adaptations, New Zealand white rabbits were subjected to ischemia caused by Inflow occlusion technique. The animals were monitored during surgery by pH and lactate levels. Transcription analysis of the pyruvate kinase, lactate dehydrogenase and phosphoenolpyruvate carboxykinase enzymes were performed by qRT-PCR, and glycogen quantification was determined enzymatically. Pyruvate kinase transcription increased during ischemia, followed by glycogen consumption content. The gluconeogenesis increased in control and ischemia moments, suggesting a relationship between gluconeogenesis and glycogen metabolism. This result shows the significant contribution of these substrates in the organ energy supply and demonstrates the capacity of the heart to adapt the metabolism after this injury, sustaining the homeostasis during short-term myocardial ischemia.

https://doi.org/10.1590/0001-3765201720160773 2096 downloads

13.

Genome Mining of Endophytic Streptomyces wadayamensis Reveals High Antibiotic Production Capability
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Angolini, Célio F. F.

; Gonçalves, Ana B.

; Sigrist, Renata

; Paulo, Bruno S.

; Samborskyy, Markiyan

; Cruz, Pedro L. R.

; Vivian, Adriana F.

; Schmidt, Eduardo M.

; Eberlin, Marcos N.

; Araújo, Welington L.

; Oliveira, Luciana G. de

Journal of the Brazilian Chemical Society

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aug 2016, Volume 27 N. 8 Pages 1465 - 1475

Abstract: En | Text: En | PDF: En

The actinobacteria Streptomyces wadayamensis A23, an endophitic strain, was recently sequenced and previous work showed qualitatively that the strain inhibits the growth of some pathogens. Herein we report the genome analysis of S. wadayamensis which reveals several antibiotic biosynthetic pathways. Using mass spectrometry, we were able to identify desferoxamines, several antimycins and candicidin, as predicted. Additionally, it was possible to confirm that the biosynthetic machinery of the strain when compared to identified known metabolites is far underestimated. As suggested by biochemical qualitative tests, genome encoded information reveals that the strain A23 has high capability to produce antibiotics.

https://doi.org/10.5935/0103-5053.20160180 19201 downloads

14.

Esqueletogênese em punaré (Thrichomys laurentinus- Rodentia, Echimyidae)
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Favaron, Phelipe O.

; Rodrigues, Marcio N.

; Borghesi, Jéssica

; Anunciação, Adriana R.A.

; Oliveira, Moacir F.

; Miglino, Maria. A.

Pesquisa Veterinária Brasileira

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jun 2016, Volume 36 Suppl. 1 Pages 51 - 57

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: O objetivo deste estudo foi descrever o desenvolvimento do esqueleto do punaré (Thrichomys laurentinus). Para tanto, foram utilizados 11 embriões e 12 fetos em diferentes estágios de desenvolvimento, sendo divididos em 4 grupos de acordo com o período gestacional. As amostras foram obtidas no Centro de Multiplicação de Animais Silvestres da Universidade Federal Rural do Semi-Árido, Mossoró-RN, Brasil. Após fixados em formol (10%) ou glutaraldeído (2,5%), foi realizada a analise morfológica com auxílio de lupa, sendo as características macroscópicas fotodocumentadas. Análises de raios-x e coloração por alizarina red foram realizadas para melhor compreensão do desenvolvimento ósseo. Nas análises de raio-x os embriões não apresentaram nenhuma radiopacidade, ao contrário dos fetos que apresentavam radiopacidade gradual ao longo dos grupos. No grupo II houve aumento de radiopacidade na região da coluna vertebral e das regiões mandibular e maxilar. No grupo III a radiopacidade estava aumentada nos membros pélvicos, nas costelas e na região frontal e no grupo IV nos membros torácicos e nas regiões occipital, temporal e frontal do crânio. Tais características foram confirmadas pelas analises histológicas e pela técnica de Alizarina Red. Com isso podemos concluir que o conhecimento acerca da embriologia do sistema ósseo normal é fundamental para o entendimento dos efeitos adversos causados pela nutrição e uso de drogas durante o desenvolvimento.

Abstract: The aim of this study was to describe the skeletogenesis in punaré (Thrichomys laurentinus). We used 11 embryos and 12 fetuses in different stages of development, allocated into 4 groups. Samples were obtained from the Multiplication Center of Wild Animals, at Federal Rural University of the Semi-Arid, Mossoro/RN, Brazil. After fixed in formalin (10%) or glutaraldehyde (2.5%) the morphological analysis was performed with a magnifying glass, and the macroscopic characteristics were photographed. Analysis of X-rays and alizarin red staining was made to better understand the development of bone structures. In x-ray analysis, it was possible to verify that the embryos showed no radiopacity, unlike fetuses that had gradual radiopacity along of the groups. In group II, there was an increase in radiopacity in the spine, mandibular and maxillary regions. In group III, the radiopacity was increased in the hind limbs, ribs and in the frontal region, and group IV showed higher radiopacity in the thoracic limbs and occipital, temporal and frontal skull. These characteristics were confirmed by histological and alizarin red analysis. We concluded that the knowledge of normal skeletal embryology is critical for understanding of adverse effects caused by nutrition and use of drugs during the development.

https://doi.org/10.1590/S0100-736X2016001300008 1972 downloads

15.

Ruthenium(II) Complexes Containing Anti-Inflammatory Drugs as Ligands: Synthesis, Characterization and in vitro Cytotoxicity Activities on Cancer Cell Lines
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Lopes, Junai C. S.

; Damasceno, Jaqueline L.

; Oliveira, Pollyanna F.

; Guedes, Adriana P. M.

; Tavares, Denise C.

; Deflon, Victor M.

; Lopes, Norberto P.

; Pivatto, Marcos

; Batista, Alzir A.

; Maia, Pedro I. S.

; Von Poelhsitz, Gustavo

Journal of the Brazilian Chemical Society

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sep 2015, Volume 26 N. 9 Pages 1838 - 1847

Abstract: En | Text: En | PDF: En

The synthesis, characterization and cytotoxic activity of cis-[Ru(dicl)(dppm)2]PF6 and cis-[Ru(ibu)(dppm)2]PF6, (dppm = 1,1-bis(diphenylphosphine)methane; dicl = diclofenac anion and ibu = ibuprofen anion), are described in this work. Complexes were characterized by elemental analysis, Fourier transform infrared spectroscopy (FTIR), UV-Vis, 31P{1H} nuclear magnetic resonance (NMR) and high-resolution mass spectrometry (HRESIMS). X-ray structure of cis-[Ru(ibu)(dppm)2]PF6 is also described. Preliminary calf thymus DNA (ct-DNA) binding studies were carried out by UV-Vis and viscosity experiments, with results suggesting the existence of electrostatic interactions between ruthenium complexes and ct-DNA. Cytotoxicity assays were carried out on a panel of human cancer cell lines and a human normal cell line. Complexes displayed a high to moderate cytotoxicity with IC50 ranging from 5 to 47 µmol L-1. cis-[Ru(ibu) (dppm)2]PF6 was found to be the most active, with IC50 values lower than cisplatin. The degree of cytotoxicity was maintained for the normal cell line, although cis-[Ru(ibu)(dppm)2]PF6 exhibited a similar selectivity to that of cisplatin but with a higher activity for at least two tumor cell lines which evidences a promising anticancer candidate and selects this complex for further experiments.

https://doi.org/10.5935/0103-5053.20150161 3031 downloads

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