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Fisiología comparada de una línea celular clorofílica y una mutante amarilla del zacate Bouteloua gracilis (Kunth) Lag. ex Griffiths en condiciones de estrés osmótico. Colegio de Postgraduados
Jiménez Francisco, Betzaida.
Las suspensiones celulares clorofílicas de plantas superiores son una herramienta valiosa para estudiar las respuestas y señales a estrés hídrico asociadas con el cloroplasto. Debido a su importancia metabólica los cloroplastos actúan como sensores de los cambios ambientales y de las redes complejas de señales que coordinan las actividades celulares y ayudan a la célula durante el estrés. En el presente trabajo se realizó la caracterización fisiológica de dos líneas celulares en suspensión del zacate B. gracilis, que se caracterizan, una por ser altamente clorofílica y, la otra, una mutante deficiente de clorofila; se estudió el efecto de la deficiencia de clorofila en la respuesta al estrés osmótico mediante la evaluación de las relaciones hídricas,...
Palavras-chave: Estrés hídrico; ABA; Prolina; Biogénesis de cloroplasto; Biosíntesis de clorofila; Pigmentos fotosintéticos; Drought stress; Proline; Chloroplast biogenesis; Chlorophyll biosynthesis; Photosynthetic pigments; Botánica; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/1976
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Tolerancia a salinidad de tomate injertado Colegio de Postgraduados
Orosco Alcalá, Blanca Estela.
La presente investigación se llevó a cabo en la empresa Vegetales de Teotihuacan S. A de C. V. ubicada en Teotihuacan, de agosto a diciembre de 2007. Se estudió el efecto de los injertos de tomate Maxifort (MX), Multifort (MF), Beaufort (BF) y de cuatro concentraciones de NaCl (0, 50, 100 y 150 mM) suministradas en la solución nutritiva Steiner sobre la altura de planta, diámetro de tallo, fotosíntesis, rendimiento, peso fresco y seco, calidad de fruta, concentración nutrimental y contenido de prolina en hojas. Se utilizó el híbrido Caimán sobre los portainjertos y éste mismo se usó como control (NI). Los resultados indican una disminución de altura de planta, diámetro de tallo, fotosíntesis y rendimiento, al aumentar el NaCl en la solución...
Tipo: Tesis Palavras-chave: Lycopersicon esculentum Mill.; Portainjertos; Prolina; Fotosíntesis; Rendimiento; Maestría; Edafología; Rootstocks; Proline; Photosynthesis; Yield.
Ano: 2008 URL: http://hdl.handle.net/10521/1320
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Rendimiento y contenido de prolina en maíz mejorado por selección masal para resistencia a sequía. Colegio de Postgraduados
Acevedo Cortés, María de los Angeles.
El presente trabajo se realizó con el objetivo de estimar el avance genético promedio del rendimiento por ciclo de selección, de diferentes compuestos de selección masal visual estratificada (SMVE) practicada para resistencia a sequía en dos variedades de maíz (Zea mays L.), donde el rendimiento de grano fue el criterio de selección. También se tuvo como objetivos estimar el avance genético indirecto promedio del contenido de prolina (P) en las plantas de los diferentes ciclos de SMVE, y conocer si existe relación alguna entre el rendimiento y P, esto para poder determinar si el P en la planta puede recomendarse como un criterio de selección para resistencia a sequía en maíz. Para evaluar el rendimiento en campo, se usaron los siguientes materiales...
Palavras-chave: Zea mays; Selección masal visual estratificada (SMVE); Sequía; Rendimiento; Respuesta a la selección; Prolina; Drought; Proline; Response to selection; Stratified visual mass selection (SVMS); Yield; Genética; Maestría.
Ano: 2012 URL: http://hdl.handle.net/10521/748
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Injertos de tomate (Solanum lycopersicum) tolerantes a la salinidad. Colegio de Postgraduados
Tlatilpa Santamaría, Ibar Felipe.
La selección de cultivares tolerantes a salinidad es uno de los métodos más efectivos para incrementar la productividad en suelos salinos. El injerto sobre patrones tolerantes a la salinidad es un método eficaz para aumentar la tolerancia de las plantas al estrés salino. Los objetivos del presente estudio fueron, es seleccionar y caracterizar accesiones de tomate silvestre con base en la respuesta de la plántula a la salinidad, y determinar la magnitud de la variabilidad fenotípica de la tolerancia con base en índices de tolerancia al estrés salino; evaluar en injertos de tomate los mecanismos de tolerancia al sodio y su influencia en la concentración de nutrimentos en el tejido vegetal del injerto; y determinar los cambios morfológicos, fisiológicos y de...
Palavras-chave: Solanum lycopersicum; Indice de tolerancia al estrés; Estrés salino; Concentración mineral en hojas; Prolina; Stress tolerance index; Salt stress; Mineral concentration in leaves; Proline; Edafología; Doctorado.
Ano: 2013 URL: http://hdl.handle.net/10521/1944
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Salinity effects on protein content, lipid peroxidation, pigments, and proline in Paulownia imperialis (Siebold & Zuccarini) and Paulownia fortunei (Seemann & Hemsley) grown in vitro Electron. J. Biotechnol.
Ayala-Astorga,Gloria Irma; Alcaraz-Meléndez,Lilia.
We evaluated the effects of saline stress on soluble proteins, lipid peroxidation (TBAR), chlorophyll a, chlorophyll b, β-carotene, violaxanthin, and proline in Paulownia imperialis and Paulownia fortunei plants grown in vitro. When the propagated plants reached a determined size, they were transferred aseptically to WPM culture medium containing different sodium chloride concentrations (0, 20, 40, 60, 80, and 160 mM) and were sampled at 15 and 30 days. Proline content was determined at 30 days after transfer only. Protein concentration significantly decreased with the highest salt levels in P. imperialis compared to controls in which no sodium chloride was added. In both P. imperialis and P. fortunei, lipid peroxidation significantly increased at...
Tipo: Journal article Palavras-chave: Paulownia fortunei; Paulownia imperialis; Pigments; Proline; Proteins; Salinity; TBARS; Tissue culture.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000500013
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Variability in accumulation of free proline on in vitrocalli of four bean ( Phaseolus vulgaris L.) varieties exposed to salinity and induced moisture stress Phyton
Cárdenas-Avila,ML; Verde-Star,J; Maiti,RK; Foroughbakhch-P,R; Gámez-González,H; Martínez-Lozano,S; Núñez-González,MA; García Díaz,G; Hernández-Piñero,JL; Morales-Vallarta,MR.
This paper reports the genotypic variability in the accumulation of proline on the in vitro calli of bean cultivars exposed to induced water and salinity stress. Remarkable variations in the proline content were found among bean cultivars exposed to both stress factors.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Proline; In vitro calli; Phaseolus vulgaris; Bean.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572006000100010
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Some physiological effects of acetamiprid on two cultivars of corn plants Phyton
Turkyilmaz Unal,B; Esiz Dereboylu,A.
The aim of the study was to investigate some physiological effects of an insecticide (Akira 20-SP) with acetamiprid agent on Cin misir Adapop 10 and Sert misir Adapop 2 cultivars of corn plants in different concentrations [0 g/L, 0.6 g/L (recommended concentration), 1.2 g/L]. Photosynthetic pigment substances, total soluble protein and proline contents were determined. Analysis of treated leaves showed that the recommended concentration resulted in higher chlorophyll value in Cin misir Adapop 10 and Sert misir Adapop 2. Carotenoid amounts increased in Cin misir Adapop 10 and decreased in Sert misir Adapop 2 to the control. Total protein contents decreased in x2 recommended concentration in Cin misir Adapop 10 and in all treatment groups in Sert misir...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecticide; Photosynthetic pigment; Proline; Protein; Zea mays L.
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000100021
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Sodium sulfate exposure slows growth of native pecan seedlings Phyton
Moreno-Izaguirre,E; Ojeda-Barrios,D; Avila-Quezada,G; Guerrero-Prieto,V; Parra-Quezada,R; Ruiz-Anchondo,T.
Pecan [Carya illinoensis (Wanngenh) K. Koch] is one of the most important nut crops in arid and semiarid regions of Mexico. Here, most pecans are grown in saline soils having poor permeability which are further degraded by the use of low-quality irrigation water. Salinity adversely affects both pecan nut quality and yield. Little work has been done to explore the physiological effects of salinity on native pecan trees. Here we examine physiological changes determined by exposure of pecan seedlings to sodium sulfate (Na2SO4) at four concentrations: 1000, 2000, 3000 and 4000 mg/L applied twice weekly over a 70 d period. Control plants were similarly irrigated but with water free of Na2SO4. The aim was to identify and quantify the putative salinity damage to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomass; Carya illinoensis; Chlorophyll; Proline; Salinity.
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000100012
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Initial development and chemical components of sugarcane under water stress associated with arbuscular mycorrhizal fungi AGRIAMBI
Sousa,Carmem C. M. de; Pedrosa,Elvira M. R.; Rolim,Mario M.; Cavalcante,Uided M. T.; Monte Júnior,Inácio P.; Pereira Filho,João V..
ABSTRACT The objective of this study was to evaluate the effects of water stress levels in the soil and a mix (or: a mixed inoculum of four species: Claroideoglomus etunicatum, Gigasporas rosea, Acaulospora longula, Fuscutata heterogama) of arbuscular mycorrhizal fungi (AMF) on initial vegetative growth, fresh and dry biomass production, root colonization, phosphorus, proteins, enzymes and amino acid of the sugarcane variety RB 857515 under greenhouse conditions. The experiment was set in a randomized block design in a 2 x 2 factorial scheme with four treatments (T1 - 50% PC - pot capacity, with AMF; T2 - 100% PC with AMF; T3 - 50% PC without AMF; T4 - 100% PC without AMF) with 16 replicates. The water stress level of 50% PC decreased stem diameter and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycorrhizal colonization; Protein; Proline.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000600548
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Modifications in vapor diffusion resistence of leaves and water relations in barbados cherry plants under water stress Rev. Bras. Fisiol. Veg.
NOGUEIRA,REJANE J. MANSUR C.; MORAES,JOSÉ ANTÔNIO P. V. DE; BURITY,HÉLIO ALMEIDA; BEZERRA NETO,EGÍDIO.
Young sexually and assexually propagated Barbados cherry plants were submitted to water deficit (20 days without irrigation). During this period the accumulation of proline, water potential of branches, osmotic potential, the relative water content of leaves, the leaf diffusive resistance, the transpiration rate and leaf temperature in the cuvette were determined. In addition, photosynthetically active radiation (PAR) and vapor pressure deficit (VPD) were measured in the porometer cuvette. The concentration of proline for both types of plants began to increase on the fifth day without watering, and reached 38.1 times the concentration in the control plants grown from seeds and 26.4 times the concentration in grafted plants on the tenth day without...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malpighia emarginata; Drought tolerance; Grafting; Proline; Transpiration; Vegetative propagation.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000100009
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Leaf proline content and its relation to fruit load and flowering in citrus under field conditions Rev. Bras. Frutic.
Arias-Sibillotte,Mercedes; Borges,Alejandra; Díaz,Pedro; Ferenczi,Alejandra; Severino,Vivian.
Abstract Citrus species grown in temperate zones have sprouting inhibited in winter and this is retaken in spring when they also bloom. The main factor that defines the vegetative or reproductive destiny of the buds is the presence of fruits in development. Low winter temperatures slow plant metabolism, which has been reported as necessary for the expression of the reproductive program. During the winter period of the annual cycle, osmotically active compounds such as proline are increased as part of the cold tolerance response. We investigated whether the presence of developing fruit and the application of exogenous gibberellins affect the proline level in citrus leaves. In an orchard of adult ‘Montenegrina’ mandarin trees, leaf proline contents were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Proline; Flower induction; Nitrogen metabolism; Alternate bearing; Gibberellic acid.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000200201
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Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars Rev. Ciênc. Agron.
Mauad,Munir; Crusciol,Carlos Alexandre Costa; Nascente,Adriano Stephan; Grassi Filho,Hélio; Lima,Giuseppina Pace Pereira.
ABSTRACT Silicon (Si) has beneficial effects on many crops, mainly under biotic and abiotic stress. Silicon can affect biochemical, physiological, and photosynthetic processes and, consequently, reduce drought stress. However, the effects of Si on rice (Oryza sativa L.) plants under drought stress are not well known. The objective of this study was to evaluate the effects of supplemental Si on proline content and peroxidase activity in upland rice plants in the presence and absence of drought stress. The experiment was conducted under greenhouse conditions and was arranged in completely randomized blocks in a 2 x 2 x 2 factorial scheme. Treatments comprised combinations of (1) presence or absence of Si supply (0 or 350 kg ha-1 of Si), (2) presence or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Proline; Peroxidase; Enzyme; Hydric deficiency.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000300532
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Biochemical and physiological responses of sugarcane cultivars to soil water deficiencies Scientia Agricola
Queiroz,Rafaela Josemara Barbosa; Santos,Durvalina Maria Mathias dos; Ferraudo,Antonio Sergio; Carlin,Samira Domingues; Silva,Marcelo de Almeida.
For sugarcane (Saccharum spp.) crops, the effects of an environmental stress, especially water deficiency, may cause severe productivity reduction, inferring negatively in the sugarcane industry. The tolerance of two sugarcane cultivars to a lack of water was made by analyzing the levels of the osmoprotectors, trehalose and free proline, and the biometrical variables of their initial growth. Biochemical and physiological responses of the cultivars, when subjected to water stress, were assayed to determine how these plants tolerate drought. The study was conducted in an acclimatized greenhouse (29.7 ± 4.3ºC and 75.0 ± 10.1% relative humidity) during 100 days and was divided into random blocks using a factorial 2 × 3 × 2 design (sugarcane cultivars × water...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum spp; Drought; Trehalose; Proline; Initial growth.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000400012
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อิทธิพลของสาร Hydrogen Cyanamide ต่อการแตกตา ปริมาณคาร์โบไฮเดรตและโพรลีนภายในตาขณะพักตัวของต้นกีวีฟรุตที่เจริญเติบโตในประเทศไทย Thai Agricultural
Wichita Intharasri.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject Palavras-chave: Kiwifruit; Hydrogen cyanamide; Budbreak; Dormant buds; Carbohydrates; Proline; Thailand; กีวีฟรุต; ไฮโดรเจนไซยานาไมด์; การแตกตา; คาร์โบไฮเดรต; โพรลีน; การพักตัว; เจริญเติบโต; พันธุ์บรูโน.
Ano: 2007 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5490
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EFFECT OF FOLIAR APPLICATION OF AMINOACIDS ON PLANT YIELD AND SOME PHYSIOLOGICAL PARAMETERS IN BEAN PLANTS IRRIGATED WITH SEAWATER Acta biol.Colomb.
SH SADAK,Mervat; ABDELHAMID,Magdi T; SCHMIDHALTER,Urs.
Salinity decreases yield in arid and semi-arid areas. With increasing demand for irrigation water, alternative sources are being sought. Seawater salinity was previously considered unusable for irrigation. However, this water can be used successfully to grow crops under certain conditions. Amino acids is well known biostimulant which has positive effects on plant growth and yield, and significantly mitigates the injuries caused by abiotic stresses. Therefore, in the present study, the effect of exogenously treatment amino acid on faba bean plant growing under seawater salt stress was investigated. Reduction of salinity damage in faba bean by using a mixture of amino acids to improve morphological and biochemical parameters, and thus raising the level of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Free amino acids; Photosynthetic pigments; Proline; Salinity; Vicia faba.
Ano: 2015 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000100015
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Effect of salt stress on physiology and agronomy characterstic of barley cultivars CIGR Journal
sorkhi, farshad.
In most northwest provinces of Iran such as West Azarbaijan province, soil salinity is a growing problem, particularly in irrigated agricultural areas, and has been found to reduce barley yield, dramatically. To investigate the effect of sodium chloride on two barley (Hordeum vulgare) cultivars, four levels of salinity: 0, 4, 8 and 12 dS/m, were employed as a factorial experiment arranged in a completely randomized design with three replications in a controlled environment of the greenhouse during 2017-2018. The results indicated that increasing salinity from 0 to 12 dS/m, decreased the emergence percentage significantly. Two cultivars of Zarjoo and Valfajr responded differently to salinity, so that Zarjoo showed a significantly higher emergence rate. This...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Emergence; Potassium; Proline; Salinity; Yield components.
Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5855
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Effects of substrate water potential in root growth of Agave salmiana Otto ex Salm-Dyck seedlings Biol. Res.
PEÑA-VALDIVIA,CECILIA B; SÁNCHEZ-URDANETA,ADRIANA B.
The objective of this study was to test the hypothesis that root of maguey (Agave salmiana Otto ex Salm-Dyck) seedlings reacts during the first 24 h to low substrate water potential (Yw), by anatomical modifications. Three-4 cm root length seedlings were planted in vermiculite for 24 h at Yw between -0.03 and -2.35 MPa. Root dimensions, proline content and anatomy were evaluated. Substrate ψw between -0.65 and -2.35 MPa did not significantly affect longitudinal root growth. However, proline content significantly increased from 1.6 to 2.1 emoles mg-1. Significant reductions of transverse root area (41 %), thickness of mucilage covering the epidermis (47 %), thickness of epidermis (between 15 and 46 %), area of the parenchyma (between 35 and 41 %)...
Tipo: Journal article Palavras-chave: Maguey; Proline; Root anatomy; Root growth; Water deficit; Water stress.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000200013
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Nitric oxide reduces oxidative damage induced by water stress in sunflower plants Bragantia
Cechin,Inês; Cardoso,Guilherme Sementili; Fumis,Terezinha de Fátima; Corniani,Natália.
Drought is one of the main environmental constraints that can reduce plant yield. Nitric oxide (NO) is a signal molecule involved in plant responses to several environmental stresses. The objective of this study was to investigate the cytoprotective effect of a single foliar application of 0, 1, 10 or 100 µM of the NO donor sodium nitroprusside (SNP) in sunflower plants under water stress. Water stressed plants treated with 1μM SNP showed an increase in the relative water content compared with 0 μM SNP. Drought reduced the shoot dry weight but SNP applications did not result in alleviation of drought effects. Neither drought nor water stress plus SNP applications altered the content of photosynthetic pigments. Stomatal conductance was reduced by drought...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Photosynthesis; Reactive oxygen species; Antioxidant enzymes; Proline; Malondialdehyde.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000200200
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Oxidative Damage and Antioxidant Response in Chenopodium murale L. Exposed to Elevated Levels of Zn BABT
Zoufan,Parzhak; Karimiafshar,Amer; Shokati,Sara; Hassibi,Payman; Rastegarzadeh,Saadat.
ABSTRACT Present study was carried out to investigate the effects of different Zn concentrations on growth and some antioxidant responses in Chenopodium murale L. The seeds were sown on the pots. 45-day plants were transferred to hydroponic solution containing 0.2 (control), 150, 300 and 600 µM Zn. The plants were harvested at 6 days after applying Zn treatments and some parameters were evaluated including plant length, fresh weight, photosynthetic pigments, malondialdehyde (MDA), ascorbate, proline and enzymatic antioxidants such as catalase (CAT), guaiacol peroxidase (GPX) and superoxide dismutase (SOD). Zn concentration showed a considerable increase in the shoot and root as the concentration of Zn increased in the medium, meanwhile the roots were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascorbate; Enzymatic antioxidant; Lipid peroxidation; Proline; Zinc.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100418
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Study of potential impacts of using sewage sludge in the amendment of desert reclaimed soil on wheat and jews mallow plants BABT
Mazen,Ahmed; Faheed,Fayza A; Ahmed,Atef F.
This investigation was conducted to study the impacts of using sewage sludge at different concentrations (0, 10, 25, 50, 75%) in amendment of desert reclaimed soil properties and some physiological aspects in wheat and jews mallow plants. Generally adding sewage sludge to desert soil improved the soil texture, raised the organic matter contents, water holding capacity and lowered pH value. The contents of NPK gradually increased as the ratio of sewage sludge increased. The fresh and dry weights and biosyntheses of pigment contents of the variously treated test plants were increased by increasing the sewage sludge levels in the soil. Also, total carbohydrate and protein contents of sewage sludge-treated test plants were positively affected. With respect to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heavy metals; Protein; Proline; Free amino acids.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400022
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