Consulta: creatorFacets:"Jacques,Rodrigo Josemar Seminoti"
Registros recuperados: 14
Data/hora: 16/06/2024 17:50:58

Cattle Manure Bioconversion Effect on the Availability of Nitrogen, Phosphorus, and Potassium in Soil
Provedor de dados: 90
Autores: Eckhardt,Daniel Pazzini; Redin,Marciel; Santana,Natielo Almeida; Conti,Lessandro De; Dominguez,Jorge; Jacques,Rodrigo Josemar Seminoti; Antoniolli,Zaida Inês.
ABSTRACT The efficiency index (EI) refers to the ratio of nutrients mineralized/made available in the soil to the total amount of nutrients added by organic fertilizer. Therefore, understanding the EI is essential for recommendation of organic fertilization. The aim of this study was to evaluate the availability through mineralization and the efficiency index of nitrogen (N), phosphorus (P), and potassium (K) in organic fertilizers produced from cattle manure. The following treatments were evaluated in an incubation experiment under controlled conditions: soil without fertilizer (control); soil + beef cattle manure vermicompost; soil + beef cattle manure/straw compost; soil + beef cattle manure; soil + dairy cattle manure; and soil + vermicompost produced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic fertilizers; Vermicompost; Efficiency index.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100527

Isolation, Characterization and Symbiotic Efficiency of Nitrogen-Fixing and Heavy Metal-Tolerant Bacteria from a Coalmine Wasteland
Provedor de dados: 90
Autores: Ferreira,Paulo Ademar Avelar; Dahmer,Sabrina de Fatima Barbosa; Backes,Tais; Silveira,Andressa de Oliveira; Jacques,Rodrigo Josemar Seminoti; Zafar,Mohsin; Pauletto,Eloy Antonio; Santos,Marco Antônio Oliveira dos; Silva,Krisle da; Giachini,Admir José; Antoniolli,Zaida Inês.
ABSTRACT: Areas affected by coal mining can be recovered by revegetation with leguminous plants associated with nitrogen-fixing bacteria. This study addressed the isolation and characterization of native nitrogen-fixing bacteria from coalmine wasteland under different vegetation restoration approaches using Macroptilium atropurpureum (DC) Urb and Vicia sativa L. as trap plants. The bacteria were characterized and identified on the basis of 16S rRNA sequences. Additionally, nitrogen-fixing strains were characterized for tolerance to high heavy metal and low pH levels, as well as for their effect on growth, nodulation, and symbiotic efficiency of M. atropurpureum and V. sativa. Soil samples were taken from the rhizosphere of eight areas, between 6 and 20...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; 16S rRNA; Rhizobium; Bradyrhizobium; Burkholderia.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100420

Soil Biological, Chemical, and Physical Properties After a Wildfire Event in a Eucalyptus Forest in the Pampa Biome
Provedor de dados: 90
Autores: Santana,Natielo Almeida; Morales,Cedinara Arruda Santana; Silva,Diego Armando Amaro da; Antoniolli,Zaida Inês; Jacques,Rodrigo Josemar Seminoti.
ABSTRACT Wildfire events cause considerable environmental disturbance but few studies have examined changes in soil properties due to fire. This study aimed to assess the effect of a wildfire event on chemical, physical, and biological properties of the soil in a eucalyptus forest in the Pampa biome. Part of a seven-year-old eucalyptus forest was affected by a wildfire event that lasted for two days. Soil and plant litter sampling was performed in three areas: in the forest that was not affected by the fire, in the forest affected by it, and in an adjacent natural pasture area (the original vegetation). Seven samples were collected from the 0.00-0.05 and 0.05-0.20 m layers of each plot for biological analysis, and three samples were collected for chemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fire; Environmental disturbance; Soil quality; Soil diversity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100417

Indicadores Microbiológicos de Solo em Pastagem com Aplicação Sucessiva de Dejetos De Suínos
Provedor de dados: 90
Autores: Silva,Danni Maisa da; Antoniolli,Zaida Inês; Jacques,Rodrigo Josemar Seminoti; Silveira,Andressa de Oliveira; Silva,Diego Armando Amaro da; Rache,Magnus Maurício; Passos,Vitor Hugo Gomes; Silva,Bruno Rafael da.
RESUMO O uso de dejetos líquidos de suínos como fertilizante do solo é uma prática comum na Região Sul do Brasil. Apesar de ter benefícios na reutilização dos dejetos, essa prática apresenta sérios riscos ambientais. Os indicadores microbiológicos de qualidade do solo são bastante sensíveis e permitem o monitoramento das condições do ambiente edáfico. Objetivou-se avaliar a qualidade microbiológica do solo de pastagens com diferentes históricos de uso sucessivo de dejetos líquidos de suínos. Determinaram-se o teor de C da biomassa microbiana, a respiração microbiana do solo, o quociente metabólico (qCO2) e a atividade das enzimas β-glicosidase, urease e hidrólise do diacetato de fluoresceína (FDA), em áreas de pastagem com uso de dejetos de suínos há dois...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Qualidade do solo; Carbono; Biomassa; Respiração; Atividade enzimática.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000601585

The effects of trace elements, cations, and environmental conditions on protocatechuate 3,4-dioxygenase activity
Provedor de dados: 63
Autores: Silva,Andréa Scaramal da; Jacques,Rodrigo Josemar Seminoti; Andreazza,Robson; Bento,Fátima Menezes; Camargo,Flávio Anastácio de Oliveira.
Phenanthracene is a highly toxic organic compound capable of contaminating water and soils, and biodegradation is an important tool for remediating polluted environments. This study aimed to evaluate the effects of trace elements, cations, and environmental conditions on the activity of the protocatechol 3,4-dioxygenase (P3,4O) enzyme produced by the isolate Leifsonia sp. in cell-free and immobilized extracts. The isolate was grown in Luria Bertani broth medium (LB) amended with 250 mg L-1 of phenanthrene. Various levels of pH (4.0-9.0), temperature (5-80 °C), time (0-90 min), trace elements (Cu2+, Hg2+ and Fe3+), and cations (Mg2+, Mn2+, K+ and NH4+) were tested to determine which conditions optimized enzyme activity. In general, the immobilized extract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzyme activity; Enzyme immobilization; Biodegradation; Waste treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000200002

Characterization of Ectomycorrhizal species through molecular biology tools and morphotyping
Provedor de dados: 63
Autores: Clasen,Bárbara Estevão; Silveira,Andressa de Oliveira; Baldoni,Daiana Bortoluzzi; Montagner,Daiane Fiuza; Jacques,Rodrigo Josemar Seminoti; Antoniolli,Zaida Inês.
ABSTRACT: Mycorrhizae are mutualistic associations between fungi and plant roots. These symbiotic associations are abundant and occur in 75 to 80 % of plants. Ectomycorrhizal fungi are very important in ecosystems, because their mutualistic association with plants of different species helps nutrients and water absorption, as well as protection of the host plant against pathogens and abiotic stresses. Most ectomycorrhizal fungi belong to the Basidiomycota class, such as the following genera: Amanita, Hebeloma, Hysterangium, Laccaria, Lactarius, Rhizopogon, Russula, Scleroderma, Suillus, Tricholoma, among others. Morphological studies on ectomycorrhizae report important results in understanding the species biodiversity. However, the use of molecular biology...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PCR; Ectomycorrhizal fungi; Molecular identification; Morphotype.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000300246

First report of the production of a potent biosurfactant with α,β-trehalose by Fusarium fujikuroi under optimized conditions of submerged fermentation
Provedor de dados: 58
Autores: Reis,Cristiane Bianchi Loureiro dos; Morandini,Liziane Maria Barassuol; Bevilacqua,Caroline Borges; Bublitz,Fabricio; Ugalde,Gustavo; Mazutti,Marcio Antonio; Jacques,Rodrigo Josemar Seminoti.
Abstract Biosurfactants have many advantages over synthetic surfactants but have higher production costs. Identifying microorganisms with high production capacities for these molecules and optimizing their growth conditions can reduce cost. The present work aimed to isolate and identify a fungus with high biosurfactant production capacity, optimize its growth conditions in a low cost culture medium, and characterize the chemical structure of the biosurfactant molecule. The fungal strain UFSM-BAS-01 was isolated from soil contaminated with hydrocarbons and identified as Fusarium fujikuroi. To optimize biosurfactant production, a Plackett–Burman design and a central composite rotational design were used. The variables evaluated were pH, incubation period,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Giberella fujikuroi Surface tension NMR spectroscopy α; Β-Trehalose Trehalolipids.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500185

Biorremediação de um solo contaminado com antraceno sob diferentes condições físicas e químicas
Provedor de dados: 65
Autores: Jacques,Rodrigo Josemar Seminoti; Silva,Kelly Justin da; Bento,Fátima Menezes; Camargo,Flávio Anastácio de Oliveira.
O antraceno e os demais hidrocarbonetos aromáticos policíclicos (HAPs) podem ser removidos do solo pela biorremediação, cuja eficiência é limitada se as condições físicas e químicas não forem favoráveis à sobrevivência e à atividade dos microrganismos degradadores. O objetivo do presente estudo foi avaliar a influência do pH, da umidade e da disponibilidade de nitrogênio, de fósforo, de ferro e de enxofre na biorremediação de um solo contaminado com antraceno. Para tanto, amostras de um solo arenoso foram contaminadas em laboratório com 500mg kg-1 de antraceno e a mineralização desse poluente foi quantificada por respirometria. As maiores mineralizações ocorreram nos tratamentos com as maiores umidades e os pH avaliados. A adição de 100kg ha-1 ou mais de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodegradação; Hidrocarboneto aromático policíclico; Bioestimulação; Acidez do solo; Umidade do solo.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000200009

Biodegradação dos herbicidas imazetapir e imazapique em solo rizosférico de seis espécies vegetais
Provedor de dados: 65
Autores: Souto,Kelen Müller; Jacques,Rodrigo Josemar Seminoti; Avila,Luis Antonio de; Machado,Sérgio Luiz de Oliveira; Zanella,Renato; Refatti,João Paulo.
A fitoestimulação é uma das técnicas de fitorremediação que pode ser utilizada para a redução da concentração dos herbicidas no solo. Para tanto é necessário a seleção de plantas que estimulem a atividade dos microrganismos degradadores da rizosfera. O objetivo deste trabalho foi avaliar a biodegradação de cinco doses do herbicida composto pela mistura formulada de imazetapir+imazapique (75 + 25 g e.a. L-1) em solo rizosférico proveniente de seis espécies vegetais com potencial para a fitoestimulação. A biodegradação do herbicida nas doses de 0, 250, 500, 1.000 e 4.000mL ha-1 no solo rizosférico de Canavalia ensiformis, Glycine max, Lolium multiflorum, Lotus corniculatus, Stizolobium aterrimum, Vicia sativa e no solo sem cultivo foi avaliada através da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arroz irrigado; Rizosfera; Microrganismos; Fitorremediação; Fitoestimulação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001000010

Physicochemical, aromatic and sensory properties of the ‘Riesling Italico’ wines fermented with Saccharomyces and non-Saccharomyces yeasts
Provedor de dados: 65
Autores: Quincozes,Lorena; Marcon,Ângela Rossi; Spinelli,Fernanda Rodrigues; Gabbardo,Marcos; Eckhardt,Daniel Pazzini; Cunha,Wellynthon Machado da; Costa,Vagner Brasil; Jacques,Rodrigo Josemar Seminoti; Schumacher,Rafael Lizandro.
ABSTRACT: The sensory quality of wines is affected by the compounds produced by the action of the yeasts used in alcoholic fermentation. This work aimed at assessing the physicochemical, aromatic and sensory properties of the ‘Riesling Italico’ white wines produced by using the Saccharomyces and non-Saccharomyces yeasts. The yeasts S. cerevisiae, S. cerevisiae cerevisiae, S. bayanus, Torulaspora delbrueckii and Metschnikowia pulcherrima were inoculated individually into the must. For 10 days, the alcohol was left to ferment in 7 L carboys in triplicate, at 15º C temperature. The standard physicochemical analyses were done and the quality of the wines was determined. The volatile compounds were identified and quantitative descriptive sensory analyses were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: White wines; Torulaspora delbrueckii; Metschnikowia pulcherrima; Volatile compounds; Sensory analysis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000600751

Differential behavior of the summer cover crops in the absorption and translocation of copper
Provedor de dados: 65
Autores: Vendruscolo,Diogo; Santana,Natielo Almeida; Souto,Kelen Müller; Ferreira,Paulo Ademar Avelar; Melo,George Wellington Bastos de; Jacques,Rodrigo Josemar Seminoti.
ABSTRACT: Phytoremediation is an alternative technique used to treat copper-contaminated soils. The objective of this research was to explore the behavior of nine summer cover crops regarding the growth, absorption and translocation of copper in soils with contamination levels exceeding the Value of Prevention, with a view to selecting plants for phytoremediation programs. In the experiments the Cambisol was contaminated with copper, added in doses of 0, 100, 200, 400, 500 and 600mg kg-1, in which the following nine plants were cultivated under greenhouse conditions: Canavalia ensiformis, Cajanus cajan, Dolichos lablad, Mucuna cinereum, Mucuna aterrima, Crotalaria juncea, Crotalaria spectabilis, Pennisetum glaucum and Paspalum notatum. At 90 days after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metal; Soil pollution; Phytoremediation; Phytostabilization; Phytoextraction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001200251

Mineralization and efficiency index of nitrogen in cattle manure fertilizers on the soil
Provedor de dados: 65
Autores: Eckhardt,Daniel Pazzini; Redin,Marciel; Jacques,Rodrigo Josemar Seminoti; Lorensini,Felipe; Santos,Marcos Leandro dos; Weiler,Douglas Adams; Antoniolli,Zaida Inês.
ABSTRACT: This research aimed to evaluate the mineralization of nitrogen (N) and to define the efficiency index (EI) of N after the addition of organic fertilizers based on cattle manure on the soil under laboratory conditions. A completely randomized statistical design with four replicates was used. The treatments were set as follows: T1) Soil (control); T2) Soil + vermicompost of cattle manure (CMV); T3) Soil + cattle manure and straw compost (CMS); and T4) Soil + cattle manure (CM). Experimental units were constituted by acrylic flasks with 5 x 5cm (height x diameter). Each flask was added with 135g of wet soil and 2.20, 2.45 and 2.27g of CMV, CMS and CM, respectively. Treatments were incubated at 25°C and the amount of mineral N from the soil (N-NH4+...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vermicompost; Organic fertilizer; Cattle manure; Composting.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300472

Effects of pig slurry application on the diversity and activity of soil biota in pasture areas
Provedor de dados: 65
Autores: Silva,Danni Maisa da; Jacques,Rodrigo Josemar Seminoti; Silva,Diego Armando Amaro da; Santana,Natielo Almeida; Vogelmann,Eduardo; Eckhardt,Daniel Pazzini; Antoniolli,Zaida Inês.
ABSTRACT: The successive application of pig slurry to pastures is a common practice in southern Brazil, serving as a method of waste disposal as well as an important alternative to chemical fertilization. Although there are economic benefits to the use of manure as fertilizer, it may be associated with environmental hazards and cause changes to composition and activity of soil fauna. This study aimed to study the effects of pig slurry on the soil biota of pastures. Composition and biological activity of pastures where manure was applied successively for 2 years (A2) and 14 years (A14) were evaluated, and native forest (NF) was analyzed as a reference area. Successive application of pig slurry to the soil changed its biological characteristics according to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic fertilization; Soil fauna; Bait lamina.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001756

Biorremediação de solos contaminados com hidrocarbonetos aromáticos policíclicos
Provedor de dados: 65
Autores: Jacques,Rodrigo Josemar Seminoti; Bento,Fátima Menezes; Antoniolli,Zaida Inês; Camargo,Flávio Anastácio de Oliveira.
Os hidrocarbonetos aromáticos policíclicos (HAPs) são compostos mutagênicos e carcinogênicos aos humanos e aos animais que são introduzidos no ambiente em grandes quantidades, devido às atividades relacionadas à extração, ao transporte, ao refino, à transformação e à utilização do petróleo e de seus derivados. Apesar disso, a grande maioria dos microrganismos do solo não possui a capacidade de degradá-los, o que resulta na sua acumulação no ambiente e na conseqüente contaminação dos ecossistemas. Uma estratégia para a eliminação dos HAPs do solo é através da biorremediação, na qual os microrganismos que apresentam capacidade de metabolizar estes compostos irão transformá-los em substâncias inertes, CO2 e água. No entanto, esta biotecnologia pode ser...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contaminantes orgânicos; Microrganismos; Bioaumentação; Bioestimulação; Landfarming; Biorreatores.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000400049