Consulta: subjectFacets:"Proline"
Registros recuperados: 29
Data/hora: 01/06/2024 07:54:09

Fisiología comparada de una línea celular clorofílica y una mutante amarilla del zacate Bouteloua gracilis (Kunth) Lag. ex Griffiths en condiciones de estrés osmótico.
Provedor de dados: 32
Autores: 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

Tolerancia a salinidad de tomate injertado
Provedor de dados: 32
Autores: 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

Rendimiento y contenido de prolina en maíz mejorado por selección masal para resistencia a sequía.
Provedor de dados: 32
Autores: 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

Injertos de tomate (Solanum lycopersicum) tolerantes a la salinidad.
Provedor de dados: 32
Autores: 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

Salinity effects on protein content, lipid peroxidation, pigments, and proline in Paulownia imperialis (Siebold &amp;amp; Zuccarini) and Paulownia fortunei (Seemann &amp;amp; Hemsley) grown in vitro
Provedor de dados: 69
Autores: Ayala-Astorga,Gloria Irma; Alcaraz-Meléndez,Lilia.
We evaluated the effects of saline stress on soluble proteins, lipid peroxidation (TBAR), chlorophyll a, chlorophyll b, &amp;#946;-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

Variability in accumulation of free proline on in vitrocalli of four bean ( Phaseolus vulgaris L.) varieties exposed to salinity and induced moisture stress
Provedor de dados: 85
Autores: 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

Some physiological effects of acetamiprid on two cultivars of corn plants
Provedor de dados: 85
Autores: 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

Sodium sulfate exposure slows growth of native pecan seedlings
Provedor de dados: 85
Autores: 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

Initial development and chemical components of sugarcane under water stress associated with arbuscular mycorrhizal fungi
Provedor de dados: 91
Autores: 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

Modifications in vapor diffusion resistence of leaves and water relations in barbados cherry plants under water stress
Provedor de dados: 93
Autores: 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

Leaf proline content and its relation to fruit load and flowering in citrus under field conditions
Provedor de dados: 94
Autores: 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

Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars
Provedor de dados: 124
Autores: 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

Biochemical and physiological responses of sugarcane cultivars to soil water deficiencies
Provedor de dados: 63
Autores: 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

อิทธิพลของสาร Hydrogen Cyanamide ต่อการแตกตา ปริมาณคาร์โบไฮเดรตและโพรลีนภายในตาขณะพักตัวของต้นกีวีฟรุตที่เจริญเติบโตในประเทศไทย
Provedor de dados: 106
Autores: 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

EFFECT OF FOLIAR APPLICATION OF AMINOACIDS ON PLANT YIELD AND SOME PHYSIOLOGICAL PARAMETERS IN BEAN PLANTS IRRIGATED WITH SEAWATER
Provedor de dados: 37
Autores: 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

Effect of salt stress on physiology and agronomy characterstic of barley cultivars
Provedor de dados: 111
Autores: 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

Effects of substrate water potential in root growth of Agave salmiana Otto ex Salm-Dyck seedlings
Provedor de dados: 48
Autores: 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 &amp;#968;w 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

Nitric oxide reduces oxidative damage induced by water stress in sunflower plants
Provedor de dados: 53
Autores: 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

Oxidative Damage and Antioxidant Response in Chenopodium murale L. Exposed to Elevated Levels of Zn
Provedor de dados: 52
Autores: 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

Study of potential impacts of using sewage sludge in the amendment of desert reclaimed soil on wheat and jews mallow plants
Provedor de dados: 52
Autores: 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

Proline content and protein patterns in Eucalyptus grandis shoots submitted to high and low temperature shocks
Provedor de dados: 52
Autores: Souza,Gustavo M.; Cardoso,Victor J. M.; Gonçalves,Antonio N.
Proline content and protein patterns changes in response to temperature shocks of both acclimated and non acclimated E. grandis shoots cultivated in vitro were investigated. Analysis of soluble proteins through SDS-PAGE and proline were carried out after 12h at 12ºC (cold acclimation) or 33ºC (heat acclimation), and immediately after temperature shocks at 41ºC and 0ºC. Analyses were also performed 24h after the temperature shocks (recovery period). Temperature treatment at 0ºC did not change soluble protein patterns both in acclimatized and non acclimatized plants, whereas cold temperature induced high proline levels, which kept relatively high after recovery period. Three novel, probably HSPs, proteins (90.5, 75 and 39 kDa) were observed in both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat shock protein; Proline; Recovery; Stress; Temperature shock.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300004

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

Isolation of new steroids of Kala Dhaman grass (Cenchrus setigerus) and evaluation of their bioactivity
Provedor de dados: 52
Autores: Singariya,Premlata; Kumar,Padma; Mourya,Krishan Kumar.
The present study was carried out to determine the possible bioactive components (steroids) of Cenchrus setigerus using GC-MS analysis and in vivo estimation of metabolites (total soluble sugar, soluble protein, proline and total phenolics), photosynthetic pigments (chlorophyll-a, chlorophyll-b and carotenoids) of seedlings and antimicrobial activity of extracts in various polar solvents from the leaves of C. setigerus. Antimicrobial activity was evaluated against three Gram-negative bacteria, including Proteusmirabilis, Klebsiella pneumonia and Agrobacterium tumefaciens andone fungus Aspergillus niger using 'disc diffusion' method, followed by the determination of minimum inhibitory concentrations (MIC) by broth dilution method. Results revealed the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cenchrus grass; Photosynthetic pigments; Total soluble sugar; Proline; Antibacterial activity; MIC; MBC/MFC.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000100010

The effects of salt stress on growth, nitrate reduction and proline and glycinebetaine accumulation in Prosopis alba
Provedor de dados: 61
Autores: Meloni,Diego Ariel; Gulotta,Marta Rosalía; Martínez,Carlos Alberto; Oliva,Marco Antonio.
Prosopis alba (algarrobo) is one of the most important salt-tolerant legumes used in the food and furniture industries. The effects of salinity on some growth and physiological parameters in algarrrobo seedlings were investigated. 17-Day-old seedlings were subjected to three salt treatments by adding NaCl to the growth medium in 50 mmol.L-1 increments every 24 h until the final concentrations of 0, 300 and 600 mmol.L-1 were reached. Only the highest NaCl concentration affected all of the considered parameters. Thus, 600 mmol.L-1 NaCl caused a significant reduction in root and shoot growth, but an increase in the root/shoot ratio. Leaf relative water content, nitrate content and nitrate reductase activity in leaves and roots were also decreased. At 300 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycinebetaine; Nitrate reductase; Proline; Salinity.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000100006

Water relations and organic solutes production in four umbu tree (Spondias tuberosa) genotypes under intermittent drought
Provedor de dados: 61
Autores: Silva,Elizamar C.; Nogueira,Rejane J. M. C.; Vale,Fernando H. A.; Melo,Natoniel F. de; Araújo,Francisco P. de.
In order to evaluate changes in leaf water potential (ψw) and solute accumulation induced by intermittent drought, an research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, GBU 50 and GBU 68) and two water treatments (control and stressed by withholding water), with four replicates. The ψw was measured in four-hour intervals during a 24-hour period at the first stomatal closure and at the end of the experimental period. Carbohydrates, amino acids, protein and proline contents were also evaluated in leaves and roots. Significant differences were found in most of the studied parameters. The lower ψw hour was between 800 h and 1200 h. GBU 50 reduced significantly ψw in stressed plants at 800 h, while control plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbohydrates; Proline; Spondias tuberosa; Water potential.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000100006

Impact of saline water stress on nutrient uptake and growth of cowpea
Provedor de dados: 61
Autores: Patel,Prakash R.; Kajal,Sushil S.; Patel,Vinay R.; Patel,Vimal J.; Khristi,Sunil M.
Soil salinity is a major limitation to crops production in many areas of the world. The present study reports the impact of salt stress on seeds germination, plant growth parameters and leaf ions accumulation in three cowpea Vigna unguiculata (L.) Walp Indian cultivars: Akshay102, Gomti vu-89 and Pusa Falguni. The electrical conductivity (EC) of the soil was 0.75 dS m−1 and the NaCl treatments increased it to 2, 4, 6, 8 and 10 dS m−1. Germination percentage was recorded 10 days after sowing, while shoot and root dry weights were measured in 45 days old plants. Leaf ion concentrations for Na+, K+, Ca2+, Cl− and proline content were determined. The results showed that the germination percentage of seeds was highly affected by salinity in all cultivars in all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salt stress; Germination; Proline; Potassium/sodium ratio.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000100005

Alterations in biochemical components in mesta plants infected with yellow vein mosaic disease
Provedor de dados: 61
Autores: Chatterjee,Arpita; Ghosh,Subrata K.
Yellow vein mosaic disease of mesta (kenaf, Hibiscus cannabinus L.; and roselle, H. sabdariffa L.) is a new entrant to the disease scenario and it is associated with a novel monopartite Begomovirus. Changes in different biochemical parameters in diseased mesta plants were observed as compared to healthy ones. Isozyme pattern and assays of different enzymes, namely catalase, acid phosphatase, peroxidase, esterase, polyphenol oxidase and superoxide dismutase, revealed lower activities of catalase, acid phosphatase and peroxidase enzymes and enhanced activities of esterase, polyphenol oxidase and superoxide dismutase in diseased plants as compared to healthy ones. Due to the infection, chlorophyll content, phenolics and total soluble protein decreased whereas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Begomovirus; Chlorophyll; Hibiscus; Isozyme pattern; Phenolics; Proline.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000400002

Glomus intraradices improved salt tolerance in Prosopis alba seedlings by improving water use efficiency and shoot water content
Provedor de dados: 61
Autores: Scambato,Agustina A.; Echeverria,Mariela; Sansberro,Pedro; Ruiz,Oscar A.; Menéndez,Ana Bernardina.
The present work was aimed at testing the hypothesis that mycorrhizal Prosopis alba, an economically important tree species worldwide, presents increased salt-tolerance compared with non-mycorrhizal ones and at gaining insight into the possible mechanisms underlying that improvement. For this purpose, a randomized complete block experiment with two factors: mycorrhizal treatments with or without the arbuscular fungus Glomus intraradices and two salinity levels, 0 and 200 mM NaCl was performed. Plant growth in P. alba plants colonized by G. intraradices was less affected by salinity than that in non-arbuscular mycorrhizal (AM) plants, indicating that mycorrhizal colonization turned P. alba more tolerant to salinity. Photosynthesis was reduced by salinity in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Photosynthesis; Salinity; Stomatal conductance; Transpiration ratio; Proline.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000400008

The effect of foliar applications of a bio-stimulant derived from algae extract on the physiological behavior of lulo seedlings (Solanum quitoense cv. Septentrionale)
Provedor de dados: 118
Autores: Díaz-Leguizamón,Jhon J; Chingaté-Cruz,Oscar F; Sánchez-Reinoso,Alefsi D; Restrepo-Díaz,Hermann.
The effect of foliar applications of a bio-stimulant derived from algae extract on the physiological behavior of lulo seedlings (Solanum quitoense cv. Septentrionale). Cien. Inv. Agr. 43(1):25-37. Seaweed extracts are used as nutritional supplements, biostimulants, or biofertilizers in agriculture and horticulture to increase plant growth and yield. In this experiment, foliar applications of bio-stimulant derivate from seaweed extract were tested on plant growth, leaf gas exchange properties, and proline accumulation in lulo seedlings cultivated under greenhouse conditions. Lulo plants were split into four treatments: (i) plants with soil fertilizer; (ii) plants treated only with foliar bio-stimulant sprays; (iii) a combination of soil fertilizer plus a...
Tipo: Journal article
Palavras-chave: Foliar sprays; Growth rates; Proline; PSII efficiency; Soil fertilizer.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100003