Consulta: creatorFacets:"Pileggi,Sônia Alvim Veiga"
Registros recuperados: 3
Data/hora: 01/06/2024 10:09:05

Selection of microorganisms degrading S-Metolachlor herbicide
Provedor de dados: 52
Autores: Martins,Paula Fabiane; Martinez,Camila Ortiz; Carvalho,Giselle de; Carneiro,Paulo Irajara Borba; Azevedo,Ricardo Antunes; Pileggi,Sônia Alvim Veiga; Melo,Itamar Soares de; Pileggi,Marcos.
The aim of this work was to study herbicide degradation through selected microorganisms from humus and soil subjected to different plantation systems. The following bacterial species were identified: Klebsiella pneumoniae pneumoniae GC s.B strain 1, Pseudomonas alcaligenes, Enterobacter aerogenes GC s.A and Klebsiella pneumoniae pneumoniae GC s.B strain 2. Growth studies yet suggested the possibility of a very long lag phase. Although, culture with the herbicide presented biofilm formation and there were color changes in the herbicide that could have interfered with the espectrophotometry readings. After 5 days of incubation at 35ºC, the difference in the concentration of herbicide was 14.42% on average and after 10 days, 35.01%.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioremediation; Biodegradation; S-Metolachlor; Herbicide.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000100019

An improved method for transformation of lettuce by Agrobacterium tumefaciens with a gene that confers freezing resistance
Provedor de dados: 52
Autores: Pileggi,Marcos; Pereira,Albanin Aparecida Mielniczki; Silva,Joandrei dos Santos; Pileggi,Sônia Alvim Veiga; Verma,Desh Pal S.
An efficient method for constructing transgenic lettuce cultivars by Agrobacterium tumefaciens was described by Torres et al., 1993. In the present work, an improvement of the above procedure is described and applied to transform the cultivar Grand Rapids with a mutated P5CS gene. The major modifications were concerned with turning more practical the transformation and regeneration protocols. Also we tried to improve transformation steps by increasing injured area in explants and prolonging co-cultivation with Agrobacteria (in larger concentration). A more significant selective pressure was used against non-transformed plants and bacteria. In these work we were concerned to obtain T1 and T2 seeds. The P5CS gene codes for a delta¹-pyrroline-5-carboxylate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stress resistance; Cold resistance; Transgenic; Lettuce; Proline.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000200013

Selection of endophytic fungi from comfrey (Symphytum officinale L.) for in vitro biological control of the phytopathogen Sclerotinia sclerotiorum (Lib.)
Provedor de dados: 58
Autores: Rocha,Rafaeli; Luz,Daniela Eleutério da; Engels,Cibelle; Pileggi,Sônia Alvim Veiga; Jaccoud Filho,David de Souza; Matiello,Rodrigo Rodrigues; Pileggi,Marcos.
Biological control consists of using one organism to attack another that may cause economic damage to crops. Integrated Pest Management (IPM) is a very common strategy. The white mold produced by Sclerotiniasclerotiorum (Lib.) causes considerable damage to bean crops. This fungus is a soil inhabitant, the symptoms of which are characterized by water-soaked lesions covered by a white cottony fungal growth on the soil surface and/or the host plant. Possible biological control agents taken from plants are being investigated as phytopathogen inhibitors. These are endophytic microorganisms that inhabit the intercellular spaces of vegetal tissues and are often responsible for antimicrobial production. The objective of the present study was to select endophytic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Sclerotinia sclerotiorum (Lib.); Endophytic strain; Symphytum officinale L.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100011