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Now showing items 1-19 of 19
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Abscisic acid and methyl jasmonic acid module anthocyanins and trans-resveratrol accumulation in berry skin of five red Vitis vinifera cvs. in two contrasting viticultural regions of Mendoza-Argentina.
(Comité editor Revista de la Facultad de Cs. Agrarias, Universidad Nacional de Cuyo., 2019-11-06)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Berry skins from red grape cultivars contain significant amounts of polyphenols that contribute to wine quality and provide health benefits. These compounds can be elicited by plant hormones. The aim of this work was to increase the content of anthocyanins (ANT) and trans-resveratrol (T-RES) by application of abscisic acid (ABA) and methyl jasmonate (MeJA) in five red V. vinifera cvs. (Bonarda, Malbec, Syrah, Cabernet Sauvignon, and Pinot Noir), in two Argentinean contrasting growing regions (Santa Rosa and Valle de Uco). Results showed positive and ... -
Abscisic Acid’s Role in the Modulation of Compounds that Contribute to Wine Quality
(Comité Editorial Plants Journal, 2021-05-08)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Abscisic acid (ABA) plays a crucial role in the plant responses to environmental signals, in particular by triggering secondary metabolism. High-altitude vineyards in Mendoza, Argentina, are exposed to elevated solar ultraviolet-B (UV-B) levels and moderate water deficits (WD), thus producing grapevine berries with high enological quality for red winemaking. Volatile organic compounds (VOCs) and phenolic compounds (PCs) accumulate in the berry skins, possess antioxidant activity, and are important attributes for red wine. The aim of the present study ... -
Aportes a estudios sismológicos, mediante estaciones SIRGAS-RT
(Instituto Geográfico Militar, 2017)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Es indudable el aumento y la utilización de estaciones GNSS permanentes en la región, incluyendo la transmisión de sus observaciones en tiempo real. Esta situación además de permitir la densificación inmediata del marco de referencia, permite conocer el comportamiento de la corteza en las zonas donde se encuentran las estaciones nombradas. Luego, al contar con mediciones periódicas y contínuas de puntos sobre la corteza puede realizarse un seguimiento de la deformación cortical, permitiendo ésto modelardicha deformación a partir de las velocidades de ... -
Aportes de la teledetección para la caracterización de amenazas para la conservación del sitio Ramsar humedal Llancanelo, Malargüe, Argentina.
(2019)(ARTÍCULO PUBLICADO EN REVISTA EXTERNA) Llancanelo es el humedal más importante de la provincia de Mendoza, Argentina. Presenta características biogeográficas únicas, gran belleza escénica, y un valor especial para mantener la diversidad genética y ecológica. Atesora hábitats para especies animales en períodos críticos de sus ciclos biológicos. Es un sitio Ramsar bajo protección internacional por considerarse en riesgo. El objetivo de este trabajo fue profundizar el análisis de las amenazas a la conservación mediante la aplicación de ... -
Assessment of grapevine stems as source of phenolics with antioxidant properties.
(Comité editorial Revista de Ciencias Agrarias de la Universidad Nacional de Cuyo, 2019)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Winemaking industry generates considerable amounts of bunch stems that are usually wasted despite their potential value as source of bioactive compounds. Phenolic profiles and antioxidant capacity (AC) of bunch stem extracts from eight grape varieties of Vitis vinifera L. were determined. Sixteen phenolic compounds (PC) were quantified by high performance-liquid chromatography-diode array detection (HPLC-DAD). The maximum concentrations corresponded to the flavanols (+)-catechin (6462 μg g-1 DW) and procyanidin B1 (1987 μg g-1 DW), followed by the ... -
Bioactive compounds and total antioxidant capacity of cane residues from different grape varieties
(Comité editorial Journal of the Science of Food and Agriculture, 2019-10-08)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. BACKGROUND Every year, the viticulture activity generates considerable amounts of underused lignocellulosic residues as grape cane, which are generally composted or burned despite their potential value as a source of bioactive compounds. Determination of their phytochemical composition and total antioxidant capacity (TAC) may be a useful way of exploiting different high‐added value applications. RESULTS Twenty‐one phenolic compounds (PC) and two carotenoids (Car) were quantified by high performance‐liquid chromatography‐diode array detection in eight ... -
Carotenoid pro!le produced by Bacillus licheniformis Rt4M10 isolated from grapevines grown in high altitude and their antioxidant activity.
(Editorial International Journal of Food Science + Technology, 2018-07-11)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Bacillus licheniformis (BL ) strains are used for industrial production of exoenzymes, antibiotics and secondary metabolites, and also serve as probiotics. Some strains sequester heavy metals, promoting plant growth or inducing plant systemic resistance against stresses. However, investigations on the biological functions and applicability of carotenoids produced by BL had been less studied. In this study, the carotenoid pro!le produced by BL Rt4M10 was characterised during the accumulation period of culture and in response to diphenylamine (DPA ), inhibitor ... -
Changes in grapevine DNA methylation and polyphenols content induced by solar ultraviolet- B radiation, water deficit and abscisic acid spray treatments.
(Comité Editorial Plant Physiology and Biochemistry., 2019-02)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Environment and crop management shape plant's phenotype. Argentinean highaltitude vineyards are characterized by elevated solar ultraviolet-B radiation (UV B) and water deficit (D) that enhance enological quality for red winemaking. These signals promote phenolics accumulation in leaves and berries, being the responses mediated by abscisic acid (ABA). DNA methylation is an epigenetic mechanism that regulates gene expression and may affect grapevine growth, development and acclimation, since methylation patterns are mitotically heritable. Berry skins low ... -
Effects on chlorophyll and carotenoid contents in different grape varieties (Vitis vinifera L.) after nitrogen and elicitor foliar applications to the vineyard
(Comité editorial Food Chemistry, 2018-12-15)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Photosynthetic pigments, including carotenoids are important secondary metabolites, which play a key role in photosynthesis. There is little information about the effects of nitrogen and elicitor applications on chlorophyll and carotenoid concentrations in grapes. The aim of this work was therefore to study the effects of the foliar application of nitrogen sources and elicitors to Tempranillo, Garnacha and Graciano (Vitis vinifera L.) grapevines on chlorophyll and carotenoid contents. The results showed that β-carotene and lutein were the most ... -
Evaluación de riesgo ecológico en el embalse El Nihuil, Mendoza, mediante biomarcadores de contaminación en perca criolla (Percichthys trucha)
(Dirección de Investigación, Ciencia y Técnica. Ministerio de Salud. Mendoza, 2015)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Boletines de la Dirección de Investigación, Ciencia y Técnica del Ministerio de Salud de Mendoza. Los artículos publicados pertenecen a resultados de proyectos UMaza con subsidio de tal Dirección a través de la convocatoria "Investigadores Mendocinos". Instituciones de los autores: Laboratorio de Biopatología, Facultad de Ciencias Veterinarias y Ambientales, Universidad Juan Agustín Maza, Mendoza; Laboratorio de Genética, Ambiente y Reproducción (GenAR), Universidad Juan Agustín Maza, Mendoza. Laboratorio de Anatomía Patológica, Hospital Central, Ministerio ... -
Girdling of shoots at flowering reduces shatter in grapevine cv. Malbec.
(Comité editorial Australian Journal of Grape and Wine Research, 2020-02-17)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Background and Aims Some grapevine cultivars such as Malbec have unstable yield, due to poor fruitset or fruitlet abscission. The phenomenon is known as ‘shatter’ and this study aims to explore the potential of applying the shoot girdling technique at flowering, to direct the carbohydrate partitioning towards inflorescences and reduce shatter. Methods and Results Fruitful Malbec shoots were girdled above the apical bunch, below the basal bunch, double girdled or not girdled (Control) during 2017 and 2018. Most vegetative growth parameters were unaffected, ... -
Identity and parentage of some South American grapevine cultivars present in Argentina.
(Comité editorial Australian Journal of Grape and Wine Research, 2017-05-03)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Background and Aims: Based on 19 nuclear simple sequence repeat markers and parental analysis, we aimed to identify and propose the pedigree of different accessions held at the Estación Experimental Agropecuaria Mendoza of the Instituto Nacional de Tecnología Agropecuaria germplasmcollection. The results were compared with data recorded in large, international databases. Methods and Results: We identified 37 different cultivars, of which 18 were original and not previously identified. The parentage analysis showed that European cultivars, such as Muscat ... -
La cuestión ambiental en disputa: el ambientalismo hegemónico y la corriente ambiental crítica. Lecturas desde y para América Latina.
(Comité editorial Revista Colombiana de Sociología, 2019-01)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. El presente artículo analiza la cuestión ambiental como un objeto y campo de disputas conformado por la confluencia de intereses y sentidos contradictorios, particularmente en torno a las causas que originan los problemas ecológicos. Se trata de un trabajo de reflexión analítica centrado en aspectos de orden teórico, por lo cual se utiliza una metodología cualitativa con énfasis en la revisión bibliográfica. Transcurrido más de medio siglo desde la emergencia de la problemática ambiental, los desafíos tendientes a minimizar el avance del deterioro ecológico ... -
Nitric oxide and abscisic acid regulate osmoprotective and antioxidative mechanisms related to water stress tolerance of grapevines
(Comité editorial Australian Journal of Grape and Wine Research, 2021-03-22)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Exogenously applied nitric oxide (NO) and abscisic acid (ABA) are known to improve the tolerance of plants to abiotic stress. The effects of NO and ABA applications on physiological and metabolic responses associated with vine protection against water stress were analysed. -
Phenolic and sensory profiles discriminate geographical indications for Malbec wines from different regions of Mendoza, Argentina.
(Comité Editorial Food Chemistry., 2018-11-01)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Malbec wines from 27 parcels from the three most important winemaking regions of Mendoza, Argentina, were produced under standardized winemaking conditions, and analyzed for phenolic composition and by means of sensory descriptive analysis. Different methods of characterization and cluster analysis for each data matrix showed that some locations of Mendoza could be significantly separated from each other. The results of unsupervised statistical methods were compared using a test for similarities and divergences, also showing that different locations may be ... -
Plant growth promoting rhizobacteria alleviate stress by AsIII in grapevine.
(Comité Editorial Agriculture, Ecosystems and Environment., 2018-11-15)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Arsenic (As) in the environment is an increasing problem all over the world that limits crop yield, and therefore, remediation strategies like inoculation with plant growth promoting rhizobacteria (PGPR) are necessary. The objective of the current study was to assess PGPR ability to reduce AsIII toxicity in grapevine (Vitis vinifera L. cv. Malbec). Two-year old grape plant-sprouts grown in 10 L pots were inoculated weekly with Bacillus licheniformis, Micrococcus luteus, Pseudomonas fluorescens, a consortium of the three strains, or water (control). Plants ... -
SIRGAS en el Contexto del Marco de Referencia Geodésico Global (GGRF): Evolución, Alcances y Perspectivas
(2017)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. SIRGAS (Sistema de Referencia Geocéntrico para las Américas) es la Sub-comisión 1.3b de la IAG (International Association of Geodesy) y Grupo de Trabajo del IPGH (Instituto Panamericano de Geografía e Historia), y es el encargado de la densificación y mantenimiento continental del ITRF (International Terrestrial Reference Frame), incorporando en épocas más recientes la tarea de definir y establecer un sistema vertical de referencia basado en alturas elipsoidales como componente geométrica y en números geopotenciales (referidos a un valor W0 global ... -
Terroir and vintage discrimination of Malbec wines based on phenolic composition across multiple sites in Mendoza, Argentina
(Scientifics reports editorial, 2021-02-03)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. This study evaluated the phenolic profiles of Malbec wines made from grapes of 23 parcels distributed in 12 geographical indications (GIs) from Mendoza, Argentina. Wines were elaborated under standardized winemaking conditions over three consecutive vintages (2016–2018). Data discriminated wines from different GIs and parcels, based on an integrative data analysis by chemometric tools. Vintage effect and specific phenolic compounds were associated with some GIs or parcels. As well, regional climate conditions allowed partial discrimination of the GIs (and ... -
Varietalidad y etiquetado: porcentaje mínimo de cortes de vinos
(Comité editorial BIO Web of Conferences, 2019-02-19)ARTÍCULO PUBLICADO EN REVISTA EXTERNA. Se evaluaron 95 vinos experimentales, cosecha 2016, tanto en su estado puro (100%) como a distintos porcentajes de combinación (90; 85; 80; 75; 60%), con el fin determinar el porcentaje mínimo de una variedad que debe tenerse en cuenta en un corte de vino etiquetado como “variedad única”. Los respectivos cortes de las variedades bajo estudio (Malbec, Cabernet Sauvignon, Bonarda, Syrah, Merlot, Tempranillo, y Aspirant Bouchet) fueron supeditados al Análisis Descriptivo Cualitativo (se evaluaron 6 atributos olfativos/gustativos), y al Análisis Discriminativo ...
