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Registros recuperados: 5
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Antimicrobial action of the essential oil of Lippia gracilis Schauer BABT
Albuquerque,Cynthia Cavalcanti de; Camara,Terezinha Rangel; Mariano,Rosa de Lima Ramos; Willadino,Lilia; Marcelino Júnior,Cristiano; Ulisses,Cláudia.
Antimicrobial activity of the essential oil (EO) of Lippia gracilis Schauer over fungi and heliconia endophytic bacteria was evaluated. For the fungi Geotrichum candidum; Trichoderma viride; Torula herbarum; Paecillomyces sp.; Fusicoccum sp.; P. aeruginens; Curvularia lunata; Aspergillus nidulans; A. flavus; and A. niger mycelial discs were inoculated in PDA medium with oil (0; 420; 440; 460; 480 e 500 µL L-1). The inhibition percentage in 420 µL L-1 was 100% for all fungi, except for C. lunata and A. niger, which was 95.58% and 89.40% , respectively. In other experiment, a suspension of the Salmonella choleraceuis-diarizonae, Enterobacter asburiae, Bacillus thuringiensis, B. pumilus, B. cereus, Klebsiella pneumoniae, and E. hormaechei was individually...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Micropropagation; Contamination; Monoterpenes.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000500001
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Avaliação do potencial fungicida de extratos etanólicos de Senna alata contra Monosparacus cannonballus Ciência e Agrotecnologia
Viana,Marcelino Gevilbergue; Albuquerque,Cynthia Cavalcanti de; Medeiros,Erika Valente de; Viana,Francisco Arnaldo; Silva,Kathia Maria Barbosa e.
Objetivou-se, neste trabalho, avaliar in vitro a atividade dos extratos alcoólicos de Senna alata (L.) Roxb. sobre Monosporascus cannonballus. O delineamento experimental foi inteiramente casualizado com esquema fatorial 3 x 6 + 1, sendo constituído por três partes da planta (caule, raiz e vagem), por seis concentrações (0,25; 0,50; 50; 75; 250; 500 ppm ) mais a testemunha, com quatro repetições por tratamento. As variáveis avaliadas foram: taxa de crescimento micelial (TCM), inibição do crescimento micelial (ICM) e área abaixo da curva do crescimento micelial (AACCM). A concentração de 500 ppm foi a mais eficiente, nas três partes vegetais avaliadas. O porcentual de inibição na referida concentração foi de 28,60%, 36,70% e 27,99% para caule, raiz e vagem...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fungicida vegetal; Caule; Raiz; Vagem; Senna alata; Monosporascus cannonballus.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542008000500005
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Early somatic embryogenesis in Heliconia chartacea Lane ex Barreiros cv. Sexy Pink ovary section explants BABT
Ulisses,Cláudia; Camara,Terezinha Rangel; Willadino,Lilia; Albuquerque,Cynthia Cavalcanti de; Brito,Júlio Zoé de.
The present work evaluated the development of embryogenic callus from transversal ovary sections. The experiments were carried out under two experimental regimes using combinations of IAA (0; 5.71; 8.56; 11.42; 14.27μM) and 2,4-D (0; 13.57; 18.10; 22.62μM) or combinations of 2,4-D with BA (0; 4.43; 6.65; 8.87; 11.09μM). Assessments were made of anatomical aspects of the callus and for the presence of embryogenic structures using cytochemical and histological analyses and stereomicroscopic and scanning electronic microscopic observations. Treatments with 2,4-D and IAA produced friable calluses demonstrating cellular acquisition of morphogenetic competence as well as the formation of pro-embryogenic sectors. The expression of embryogenic program could be...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Callogenesis; Growth regulator; Histology; Scanning electron microscopy.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100002
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In Vitro Propagation of Heliconia bihai (L.) L. from Zygotic Embryos Acta Botanica
Ulisses,Cláudia; Melo-de-Pinna,Gladys Flávia; Willadino,Lilia; Albuquerque,Cynthia Cavalcanti de; Camara,Terezinha Rangel.
The internal morphology of embryos from immature and mature fruits of Heliconia bihai (L.) L. cv. Lobster Claw Two was examined. Embryos were inoculated into MS media (full MS and ½ MS) and GA3 (0, 2.5 and 5 mg L-1) with either sucrose or glucose. These plantlets were then replicated and transferred to MS medium (full MS or ½ MS) with 0 or 2.5 mg L-1 BAP and their multiplication was evaluated 30 and 45 days after inoculation. The genetic variability of the multiplied plants was estimated using isoenzyme analyses. The internal morphology of the mature embryos revealed their tissues to be in more advanced stages of differentiation than immature embryos. In the conversion phase, 85% of the inoculated embryos developed into plants in the ½ MS medium with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbohydrates; Embryo culture; Histology; Isoenzymes; Micropropagation.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000100018
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Mycorrhization and saline stress response in Hyptis suaveolens Ciência Rural
Souza,Marília Cristina Gomes de; Morais,Marciana Bizerra de; Andrade,Marcelo da Silva; Vasconcelos,Mayron Alves de; Sampaio,Silvana Saker; Albuquerque,Cynthia Cavalcanti de.
ABSTRACT: The objective of this study was to evaluate the physiological and biochemical mechanisms of adaptation of Hyptis suaveolens under osmotic stress due to salinity inoculations with a mycorrhizal fungal species. H. suaveolens seeds were germinated in polyethylene pots containing a substrate associated with or without arbuscular mycorrhizal fungi (AMF). After plant formation, treatments were treated with different salt concentrations (0.0, 35, 70, and 105 mM) and fungi (control and two types of AMF), totaling 12 treatments with three replicates. The experimental design used randomized blocks in a 4 x 3 factorial scheme, totaling 12 treatments with three replicates each. Salinity affected all measured physiological and biochemical variables, and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidant activity; Abiotic stress; Salinity; Arbuscular mycorrhizal fungi.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000600402
Registros recuperados: 5
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