Public attitudes towards the use of transgenic forest trees: a crosscountry pilot survey

Information on public attitudes towards the use of transgenic trees in forest plantations is important in the decision-making process and policy implementation for safe tree development, particularly at the EU level. In Europe, the use of transgenic forest trees is very limited and therefore such information is completely lacking. To address this issue within the FP0905 European COST Action on the Biosafety of Transgenic Forest Trees a pioneer cross-country pilot survey on public attitudes towards the use of transgenic forest trees was conducted using young population as a focus group. This was decided mainly because this focus group represents the future consumers, policy makers or developers. Specifically, the survey aimed to: i) assess the level of young people’s knowledge about transgenic forest trees, ii) identify issues of concern to them regarding the cultivation of transgenic forest trees and iii) explore whether they approve or disapprove of the use of transgenic forest trees in plantations. Purposive sampling was performed and university students of different disciplines were included in the research as sampling subjects. In total, 1868 completed questionnaires from 15 European and non-European countries were analyzed. The young educated people that took part in the survey appeared to approve of the use of transgenic forest trees in plantations and would be willing to buy forest transgenic products. The potential loss of biodiversity due to a risk of gene flow between transgenic and wild trees was seen as the safety issue of most concern when considering the commercial release of transgenic forest trees. However, a serious perceived lack of knowledge about potential benefits and risks of the cultivation of transgenic forest trees was recorded in most of the countries. K-means clustering was implemented on respondents’ positive responses to identify potential country patterns. No differences in patterns of public attitude towards the acceptance of the commercial growing of transgenic forest trees were observed between European and non-European countries. Extended research on public attitude issues towards the use of transgenic forest trees is strongly recommended as a basis for policy implementation on safe tree development.La lista completa de autores que integran el documento puede consultarse en el archivoFacultad de Ciencias Agrarias y Forestale

Public attitudes towards the use of transgenic forest trees: a crosscountry pilot survey

Information on public attitudes towards the use of transgenic trees in forest plantations is important in the decision-making process and policy implementation for safe tree development, particularly at the EU level. In Europe, the use of transgenic forest trees is very limited and therefore such information is completely lacking. To address this issue within the FP0905 European COST Action on the Biosafety of Transgenic Forest Trees a pioneer cross-country pilot survey on public attitudes towards the use of transgenic forest trees was conducted using young population as a focus group. This was decided mainly because this focus group represents the future consumers, policy makers or developers. Specifically, the survey aimed to: i) assess the level of young people’s knowledge about transgenic forest trees, ii) identify issues of concern to them regarding the cultivation of transgenic forest trees and iii) explore whether they approve or disapprove of the use of transgenic forest trees in plantations. Purposive sampling was performed and university students of different disciplines were included in the research as sampling subjects. In total, 1868 completed questionnaires from 15 European and non-European countries were analyzed. The young educated people that took part in the survey appeared to approve of the use of transgenic forest trees in plantations and would be willing to buy forest transgenic products. The potential loss of biodiversity due to a risk of gene flow between transgenic and wild trees was seen as the safety issue of most concern when considering the commercial release of transgenic forest trees. However, a serious perceived lack of knowledge about potential benefits and risks of the cultivation of transgenic forest trees was recorded in most of the countries. K-means clustering was implemented on respondents’ positive responses to identify potential country patterns. No differences in patterns of public attitude towards the acceptance of the commercial growing of transgenic forest trees were observed between European and non-European countries. Extended research on public attitude issues towards the use of transgenic forest trees is strongly recommended as a basis for policy implementation on safe tree development.La lista completa de autores que integran el documento puede consultarse en el archivoFacultad de Ciencias Agrarias y Forestale

Propuesta pedagógica innovadora : Aplicación de la enseñanza semipresencial en el curso de Introducción a la Dasonomía

Propósito de Investigación: - Investigar si la innovación en las estrategias de enseñanza facilita el proceso de aprendizaje de los alumnos en el curso de Introducción a la Dasonomía. - Analizar el proceso de enseñanza y aprendizaje con el objeto de dirigirlo a una renovación e innovación en la didáctica, y así - Aplicar y evaluar estrategias que permitan obtener un aprendizaje significativo en los alumnos implementando las condiciones necesarias para obtenerlo. Objetivos de la investigación Generales 1. Desarrollar un proyecto destinado a la innovación curricular aplicable al ámbito de trabajo docente en el curso de Introducción a la Dasonomía, para alumnos de Ing. Forestal. 2. Modificar el proceso de enseñanza y aprendizaje de acuerdo con las necesidades, intereses y estilo de aprendizaje de los estudiantes. 3. Optimizar la gestión en el proceso de enseñanza y aprendizaje para mejorar los índices de desempeño de los alumnos y desarrollar una actitud profesional basada en los valores asociados al liderazgo, solidaridad y responsabilidad. 4. Mejorar las capacidades de los alumnos en cuanto a autogestión del estudio; elaboración de materiales de estudio, comunicación oral y escrita, trabajo individual y grupal.Facultad de Ciencias Agrarias y Forestale

Public attitudes towards the use of transgenic forest trees: a crosscountry pilot survey

Information on public attitudes towards the use of transgenic trees in forest plantations is important in the decision-making process and policy implementation for safe tree development, particularly at the EU level. In Europe, the use of transgenic forest trees is very limited and therefore such information is completely lacking. To address this issue within the FP0905 European COST Action on the Biosafety of Transgenic Forest Trees a pioneer cross-country pilot survey on public attitudes towards the use of transgenic forest trees was conducted using young population as a focus group. This was decided mainly because this focus group represents the future consumers, policy makers or developers. Specifically, the survey aimed to: i) assess the level of young people’s knowledge about transgenic forest trees, ii) identify issues of concern to them regarding the cultivation of transgenic forest trees and iii) explore whether they approve or disapprove of the use of transgenic forest trees in plantations. Purposive sampling was performed and university students of different disciplines were included in the research as sampling subjects. In total, 1868 completed questionnaires from 15 European and non-European countries were analyzed. The young educated people that took part in the survey appeared to approve of the use of transgenic forest trees in plantations and would be willing to buy forest transgenic products. The potential loss of biodiversity due to a risk of gene flow between transgenic and wild trees was seen as the safety issue of most concern when considering the commercial release of transgenic forest trees. However, a serious perceived lack of knowledge about potential benefits and risks of the cultivation of transgenic forest trees was recorded in most of the countries. K-means clustering was implemented on respondents’ positive responses to identify potential country patterns. No differences in patterns of public attitude towards the acceptance of the commercial growing of transgenic forest trees were observed between European and non-European countries. Extended research on public attitude issues towards the use of transgenic forest trees is strongly recommended as a basis for policy implementation on safe tree development.La lista completa de autores que integran el documento puede consultarse en el archivoFacultad de Ciencias Agrarias y Forestale

Propuesta pedagógica innovadora

Propósito de Investigación:\n- Investigar si la innovación en las estrategias de enseñanza facilita el proceso de aprendizaje de los alumnos en el curso de Introducción a la Dasonomía.\n- Analizar el proceso de enseñanza y aprendizaje con el objeto de dirigirlo a una renovación e innovación en la didáctica, y así\n- Aplicar y evaluar estrategias que permitan obtener un aprendizaje significativo en los alumnos implementando las condiciones necesarias para obtenerlo.\nObjetivos de la investigación\nGenerales\n1. Desarrollar un proyecto destinado a la innovación curricular aplicable al ámbito de trabajo docente en el curso de Introducción a la Dasonomía, para alumnos de Ing. Forestal.\n2. Modificar el proceso de enseñanza y aprendizaje de acuerdo con las necesidades, intereses y estilo de aprendizaje de los estudiantes.\n3. Optimizar la gestión en el proceso de enseñanza y aprendizaje para mejorar los índices de desempeño de los alumnos y desarrollar una actitud profesional basada en los valores asociados al liderazgo, solidaridad y responsabilidad.\n4. Mejorar las capacidades de los alumnos en cuanto a autogestión del estudio; elaboración de materiales de estudio, comunicación oral y escrita, trabajo individual y grupal.Docente Universitario Especializad

Chemical and Biological Characterization from Condalia microphylla Fruits, a Native Species of Patagonia Argentina

Condalia microphylla Cav. (Rhamnaceae), popularly known as “piquillin”, is widely distributed in Patagonia. The drupes are consumed as fresh fruits by Argentine communities. The aim of this work was to quantify the nutritional value of C. microphylla fruit and the phenolic compounds present and to determine the functional antioxidant properties in vitro and in vivo. The nutritional value was determined according to the Association of Official Analytical Chemists (AOAC) methodology, and phenolic compounds were quantified by diode-array detection (HPLC-DAD). Antioxidant activity in vitro and in vivo was analyzed through the use of the radical species 2,2-diphenyl-1-picrylhydrazyl (DPPH) and zebrafish model, respectively. Quercetin-3-O-rutinoside (rutin) was the single principal phenolic compound. The extracts contained in vitro antioxidant activities and total phenolic contents (TPCs) between 1,143 ± 112 µg and 4,633 ± 174 µg gallic-acid equivalents (GAEs) per 100 g dry weight (DW), though no relationship was found between the latter parameter and the antioxidant activity of the extracts. When zebrafish larvae were exposed to oxidative stress (2.4% v/v H2O2), a concentration as low as 1.44 µg of GAEs/mL of piquillin-derived polyphenols inhibited lipid oxidation by up to 40%. Thus, in view of these advantageous functional food properties and the opportunity to exploit this Patagonian natural resource, piquillin consumption should be promoted worldwide.Fil: Boeri, Patricia. Universidad Nacional de Río Negro. Sede Atlántica; ArgentinaFil: Piñuel, Maria Lucrecia. Universidad Nacional de Rio Negro. Centro de Investigaciones y Transferencia de Rio Negro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Rio Negro; Argentina. Universidad Nacional de Río Negro. Sede Atlántica; ArgentinaFil: Sharry, Sandra Elizabeth. Universidad Nacional de Río Negro. Sede Atlántica; Argentina. Universidad Nacional de la Plata. Facultad de Cs.agrarias y Forestales. Departamento de Tecnología Agropecuaria y Forestal. Centro Exptal.de Propagación Vegetativa; ArgentinaFil: Tombari, Andrea Diana. Universidad Nacional de Río Negro. Sede Atlántica; ArgentinaFil: Barrio, Daniel Alejandro. Universidad Nacional de Río Negro. Sede Atlántica; Argentina. Universidad Nacional de Rio Negro. Centro de Investigaciones y Transferencia de Rio Negro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Rio Negro; Argentin

Los sistemas agroforestales

Este capítulo brinda un panorama general de los sistemas agroforestales, teniendo en cuenta el enfoque de este libro. Para ello es pertinente considerar algunos aspectos tales como las definiciones de sistema, sistema agroforestal, características, objetivos y antecedentes de los SAF.Facultad de Ciencias Agrarias y ForestalesFacultad de Ciencias Naturales y Muse

Clasificación de los SAF

Este capítulo brinda una compilación y re-elaboración de la clasificación de los SAF en base a la bibliografía vigente referenciada. Existen varias clasificaciones de los sistemas agroforestales, sin embargo, clasificar los sistemas agroforestales con sus variantes ambientales y de sitio ha sido una labor difícil que tomó mucho tiempo sin alcanzar consenso ni una clasificación global. En este contexto, el ICRAF realizó un inventario mundial de SAF entre 1982 y 1987, cuyos resultados dieron lugar a un esquema de clasificación que es generalmente aceptado en la actualidad (Nair, 1989). Dicho inventario estuvo diseñado para recopilar, reunir, sintetizar y difundir información sobre los SAF existentes en los países en desarrollo. Este proyecto también permitió generar una lista de las principales plantas herbáceas y leñosas perennes reportadas como componentes de los sistemas existentes y sus principales usos en diferentes regiones (Botero y Russo, 2020). La clasificación de los sistemas agroforestales es necesaria con el fin de comprender los diferentes tipos, proveer un marco conceptual que permita evaluarlos y desarrollar planes de acción para su diseño y establecimiento.Facultad de Ciencias Agrarias y ForestalesFacultad de Ciencias Naturales y Muse

Plantas de probeta : Manual para la propagación de plantas por cultivo de tejidos in vitro

Este manual es el resultado de más de 25 años de brindar capacitaciones a diferentes actores sociales en el manejo de técnicas de cultivo de tejidos vegetales in vitro. Tiene por objetivo facilitar la comprensión de conceptos y técnicas en cultivos de tejidos vegetales así como valorar los aportes, aplicaciones y potencialidades de estas herramientas a la hora de formular investigaciones e iniciativas en el área de la biotecnología vegetal. Nos hemos reunido muchos de los docentes e investigadores que participamos en los cursos, con el objeto de compartir saberes y destrezas adquiridas a lo largo de nuestra actividad profesional.Facultad de Ciencias Agrarias y Forestale

In vitro culture of Peltophorum dubium (Spreng.) Taub and Enterolobium contortisiliquum (Vell.) Morong

Las especies Peltophorum dubium (Spreng.) (Caña fístula) y Enterolobium contortosiliquum (Vell.) Morong (Timbó), nativas de la selva misionera, son de interés para la foresto-industria, melíferas y de buena calidad para restauración de áreas degradadas y/o en sistemas consociados agroforestales de la región. El desarrollo de un protocolo de propagación in vitro para ambas especies es necesario para contar con herramientas para un programa de conservación ex situ. El objetivo del presente trabajo fue determinar el medio nutritivo, concentración y tipo de reguladores de crecimiento vegetal, y tipo de explantos necesarios para la proliferación in vitro de brotes axilares, adventicios y embriones somáticos de P. dubium y E. contortisiliquum. El 100% de los explantos obtenidos de plántulas germinadas in vitro de P. dubium formaron brotes axilares, con una producción promedio de dos brotes por explanto a partir de segmentos nodales cultivados en MS½+0,1 mg/l BAP. El 65% de estos brotes formaron raíces cuando fueron subcultivados a medio MS½, libre de RCV. Se reporta además en P. dubium, la formación de brotes adventicios y la inducción de embriones somáticos, que alcanzaron estadio acorazonado a partir de segmentos apicales, inducidos en MS½ suplementados con 2,4-D y BAP y diferenciados en MS½ en presencia de BAP. Por otro lado, también por primera vez, se obtuvo en E. contortisiliquum, la producción de brotes axilares a partir de segmentos nodales cultivados en MS+0,1 mg/l BAP en un 100% de los explantos y la producción de brotes adventicios (con un máximo de 6 brotes/explanto), a partir de segmentos apicales, inter-cotiledonares y nodales, cultivados en medio MS suplementados con BAP y ANA.The species Peltophorum dubium (Spreng.) (Caña fístula) y Enterolobium contortosiliquum (Vell.) Morong (Timbó), native to the interior atlantic forest, are of interest for the forestry industry, melliferous and of good quality for the restoration of degraded areas and/or in agroforestry systems in the region. The development of an in vitro propagation protocol for both species is necessary to have tools for an ex situ conservation program. The objective of the present work was to determine the nutrient medium, concentration and type of plant growth regulators, and type of explants necessary for the in vitro proliferation of axillary shoots, adventitious shoots, and somatic embryos of P. dubium and E. contortisiliquum. Hundred percent of explants obtained from in vitro germinated seedlings of P. dubium formed axillary buds, with an average production of two buds per explant from nodal segments grown in MS½+0,1 mg/l BAP. Sixty-five percent of these shoots formed roots when subcultured to RCV-free MS½ medium. It is also reported in P. dubium, the formation of adventitious shoots and the induction of somatic embryos, which reached the heart stage from apical segments, induced in MS½ supplemented with 2,4-D and BAP and differentiated in MS½ in the presence of BAP. On the other hand, also for the first time, it was obtained in E. contortisiliquum, the production of axillary buds from nodal segments grown in MS+0,1 mg/l BAP in 100% of the explants and the production of adventitious shoots (with a maximum of 6 buds/explant), from apical, inter-cotyledonal and nodal segments, grown in MS medium supplemented with BAP and ANA.Facultad de Ciencias Agrarias y Forestale