Hilda Pedranzani

Hilda Pedranzani
Universidad Nacional de San Luis · Área de Ecología

Dr. en Ciencias Biológicas
Professor and researcher in plant physiology

About

75
Publications
68,742
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Citations
Introduction
Universidad Nacional de San Luis, Argentina
Additional affiliations
March 2017 - December 2019
Spanish National Research Council
Position
  • Research in Programa EMHE-CSIC (Enhancing Mobility between Latin America, Caribbean and the European Union in Health and Environment).
Description
  • Director in Doctoral Thesis : Use of alfalfa varieties associated with tolerant rhizobia in the phytoremediation of soils contaminated by salt and heavy metals ” (Utilización de variedades de alfalfa asociados a rizobios tolerantes en la fitorremediación de suelos contaminados por sal y metales pesados)
June 2015 - July 2016
Centro Superior de Investigaciones Científicas . Granada .España.
Position
  • ICOOP PROYECT
Description
  • Double symbiosis of Digitaria eriantha and Azospirilum and Mycorrizas . Tolerance to abiotic stress
February 2015 - April 2015
Universita di Pisa
Position
  • Staff Professor
Description
  • Research about mechanism of cold and salt stress in native plants of Sud America. Biochemical parameters and morfophysiological process, and radioimnuno assay.

Publications

Publications (75)
Book
Full-text available
PRÓLOGO Este libro se ha realizado en su totalidad con la ayuda inestimable de la Universidad Nacional de San Luis, a través de los Proyectos de Ciencia y Técnica, en el marco de los cuales se generaron formación de Recurso Humanos, de grado y de posgrado y se produjo conocimiento científico publicado en revistas nacionales e internacionales. La pr...
Article
Objetivo: Evaluar la tolerancia de cuatro genotipos de Medicago sativa L. a la salinidad y cadmio, mediante el estudio de la geminación, parámetros de crecimiento, pigmentos fotosintéticos y respuesta osmocompatible. Materiales y métodos: El diseño experimental fue completamente al azar con arreglo factorial: tipo de genotipo: CW 197, Trinidad 87,...
Article
Full-text available
Objective: To evaluate the tolerance of four genotypes of Medicago sativa L. to salinity and cadmium, through the study of germination, growth parameters, photosynthetic pigments, and osmocompatible response. Materials and methods: The experimental design was a completely randomized design with a factorial arrangement: type of genotype: CW 197, Tri...
Chapter
Full-text available
J. curcas L. and J. macrocarpa Griseb. are perennial shrub with the greatest importance mainly from its biofuel potential. Several authors consider that seed tegument is one of the factors that induce dormancy. The aim of the work was to study the role of tegument and abscisic acid (ABA) y jasmonic acid (JA) in dormancy and germination in these spe...
Article
Abstract Objetive: This study investigated the effects of inoculation with Rhizofagus intraradices on phy�siological parameters and antioxidant defense in Medicago sativa plants under salt, drought and cold stress. Material y methods: M. sativa seeds, var. Dekalb (DK166), were disinfected and seeded in sterilized mixture of soil/sand. 10 g of...
Preprint
Full-text available
En momentos de la pandemia inesperada del COVID , fue necesario adaptar algunos Trabajos Prácticos de Fisiología a la falta de laboratorios. Para lo cual se diseñaron Talleres de trabajo, y se dejaron sólo los Trabajos Prácticos que se podían realizar con elementos rudimentarios en los hogares de los alumnos, y en otros casos , utilizando datos del...
Article
Full-text available
.J curcas and J. macrocarpa are useful for restoring degraded areas and their seeds contain oils for biodiesel production. The aim of the work was to de-termine the reserve substances in the endosperm and the embryo ofJ. curcasand J. macrocarpa which is important in understanding the germination process, the establishment of these species and its i...
Article
Full-text available
To achieve a good production of a crop, it is essential to know the ability of the species to successfully complete two critical stages in the life cycle such as germination and seedling establishment. In this paper we study in comparative form structure of the seed, the importance of tegument in dormancy, the effect of accelerated aging on seed ge...
Method
Hace varios años atrás tuve la oportunidad de hacerme cargo de una Cátedra de Biología en la Carrera de Ingeniería en Alimentos y en la Tecnicatura en Bromatología, de la Facultad de Ingeniería y Ciencias Agropecuarias en la Universidad Nacional de San Luis. No estaba organizada y correspondía organizar el programa y los contenidos. También fue nec...
Book
Full-text available
Hace varios años atrás tuve la oportunidad de hacerme cargo de una Cátedra de Biología en la Carrera de Ingeniería en Alimentos y en la Tecnicatura en Bromatología, de la Facultad de Ingeniería y Ciencias Agropecuarias en la Universidad Nacional de San Luis. No estaba organizada y correspondía organizar el programa y los contenidos. También fue nec...
Book
Hace varios años atrás tuve la oportunidad de hacerme cargo de una Cátedra de Biología en la Carrera de Ingeniería en Alimentos y en la Tecnicatura en Bromatología, de la Facultad de Ingeniería y Ciencias Agropecuarias en la Universidad Nacional de San Luis. No estaba organizada y correspondía organizar el programa y los contenidos. También fue nec...
Book
Full-text available
Hace varios años atrás tuve la oportunidad de hacerme cargo de una Cátedra de Biología en la Carrera de Ingeniería en Alimentos y en la Tecnicatura en Bromatología, de la Facultad de Ingeniería y Ciencias Agropecuarias en la Universidad Nacional de San Luis. No estaba organizada y correspondía organizar el programa y los contenidos. También fue nec...
Article
Full-text available
Jatropha curcas and J. macrocarpa, suitable for production of biodiesel oil from their seeds, are able to live in arid and semi-arid regions, where most crops cannot survive. J. curcas is characterized by higher oil quality and seed yield, but it is not a good candidate for oil production in arid areas with freezing temperatures, due to its sensiti...
Chapter
Full-text available
Jasmonic acid (JA) is biosynthesized from linolenic acid by the octadecanoid pathway and is considered a plant hormone.There are many derivative compounds and metabolites collectively called jasmonates, which have different physiological actions. The major function of JA and its various metabolites is to regulated plant responses to abiotic and bio...
Article
Full-text available
Abstract Digitaria eriantha Steudel is a forage species adapted to grazing areas but sensitive to low temperatures, water stress and salinity. The promoter’s bacterial populations of plant growth PGPR (Plant growth-promoting rhizobacteria) have the ability to colonize the root system of plants and mitigate stresses.The aim of this work is to study...
Method
Full-text available
Es una guia de trabajos practicos simples para alumnos universitarios donde se ponen a prueba en forma experimental los contenidos teoricos brindados con anticipacion. Son Trabajos Prácticos de facil realización y pretenden acercar a los alumnos un entendimiento mas acabado de los proceso fisiologicos que ocurren en las plantas.
Article
Full-text available
Jatropha curcas L. and Jatropha macrocarpa Griseb. (Euphorbiaceae) are perennial species adapted to marginal conditions not suitable for agriculture, and have been recently exploited for oil and biodiesel production. The anatomy of different organs in members of this family exhibits a wide range of variations. However, knowledge of anatomical featu...
Method
Full-text available
It is a guide of practical works of in vitro cultivation of plants with two main purposes, conservation and production of native and cultivated plants. It is addressed to students of Bachelor of Biological Sciences and Bachelor of Molecular Biology. Corresponds to an optional subject of both Bachelors .
Article
Full-text available
This study evaluates antioxidant responses and jasmonate regulation in Digitaria eriantha cv. Sudafricana plants inoculated (AM) and non-inoculated (non-AM) with Rhizophagus irregularis and subjected to drought, cold, or salinity. Stomatal conductance, photosynthetic efficiency, biomass production, hydrogen peroxide accumulation, lipid peroxidation...
Article
Our main objective was to analyze the protection provided by Mycorrhiza (Rhizophagus intraradices) to Jatropha curcas plants under cold stress, through the analysis of physiological and oxidative stress parameters. Mycorrhizal (AM) and non-mycorrhizal (nonAM) plants were exposed to cold stress 4±1 ºC temperature for 72 h. The control plant grow at...
Research
Full-text available
Differential Effects of Cold Stress on the Antioxidant Response of Mycorrhizal and Non-Mycorrhizal Jatropha curcas (L.) Plants .URL: http://dx.doi.org/10.5539/jas.v7n8pxx
Article
Full-text available
Abstract Changes in growth parameters, root and leaf anatomy, and stress hormone contents in Cd-stressed soybean (Glycine max L.) seedlings were investigated. Under treatment with 40 lM CdCl2, the whole plant, root and leaf FW and DW significantly decreased. Also, the whole plant and root length decreased, as well as the chlorophyll and carotenoid...
Article
Full-text available
Cadmium (Cd) is a non-essential heavy metal that may be toxic or even lethal to plants as it can be easily taken up by the roots and loaded into the xylem to the leaves. Using soybean roots (Glycine max L) DM 4800, we have analysed various parameters related to reactive oxygen metabolism (ROS) and nitric oxide (NO) during a six-day Cd exposure. A r...
Article
Full-text available
Changes in growth parameters, root and leaf anatomy, and stress hormone contents in Cd-stressed soybean (Glycine max L.) seedlings were investigated. Under treatment with 40 lM CdCl 2 , the whole plant, root and leaf FW and DW significantly decreased. Also, the whole plant and root length decreased, as well as the chlorophyll and carotenoid content...
Article
Full-text available
To evaluate alfalfa (Medicago sativa L.) tolerance to osmotic stress induced by polyethylene glycol 6000 (PEG6000) and salinity (NaCl), germination and growth was investigated in early seedling stages in three genotypes: Dk166, Verdor and Salina varieties. This investigation was performed using a completely randomized design with five replications:...
Article
Full-text available
En la Región del Espinal, Distrito del Caldén, en la provincia de San Luis existe un fuerte proceso de agriculturización con la consecuente pérdida de remanentes de bosque nativo, peligro de conservación de especies nativas e invasión de especies exóticas. El objetivo del presente trabajo fue evaluar el efecto del desmonte en franjas sobre 6 especi...
Article
Full-text available
En la Región del Espinal existe un fuerte proceso de avance de la frontera agrícola, en detrimento de la actividad ganadera en zonas donde el suelo no tiene una aptitud preponderantemente agrícola con la consecuente pérdida de remanentes de bosque nativo además de la extinción de especies nativas e invasión de especies exóticas. El objetivo del pre...
Article
Full-text available
Two cultivars of Digitaria eriantha (cold-sensitive cv. Sudafricana and cold-resistant cv. Mejorada INTA) were exposed to cold stress (5 °C) for 0, 6, 24, or 72 h, and compared in terms of leaf and root growth, recovery period, shoot and leaf anatomy, and levels of chlorophyll, auxin (indole-3-acetic acid, IAA) and cytoki-nins (CKs). In Sudafricana...
Article
Full-text available
Two cultivars of Digitaria eriantha (cold-sensitive cv. Sudafricana and cold-resistant cv. Mejorada INTA) were exposed to cold stress (5 °C) for 0, 6, 24, or 72 h, and compared in terms of leaf and root growth, recovery period, shoot and leaf anatomy, and levels of chlorophyll, auxin (indole-3-acetic acid, IAA) and cytokinins (CKs). In Sudafricana,...
Article
Full-text available
The two cultivars of Digitaria eriantha: cv. Sudafricana (a cold-sensitive cultivar) and cv. Mejorada INTA (a cold-resistant cultivar) were exposed to low temperature and compared in terms of the involvement of abscisic acid (ABA) and catabolites, jasmonates, and antioxidant defense in cold tolerance. Cold stress caused a greater ABA increase in cv...
Article
Full-text available
The objective of this work was to determine the effect of different temperatures and osmotic potentials (OP) on the germination of seeds from Digitaria eriantha Steudel subsp. eriantha cv. Sudafricana and Trichloris crinita. The seeds were put to germinate on Petri dishes at temperatures of 17º, 25º, 30º and 35ºC and in solutions of PEG6000, in ord...
Article
Full-text available
The objective of this work was to determine the effect of different temperatures and osmotic potentials (OP) on the germination of seeds from Digitaria eriantha Steudel subsp. eriantha cv. Sudafricana and Trichloris crinita. The seeds were put to germinate on Petri dishes at temperatures of 17º, 25º, 30º and 35ºC and in solutions of PEG6000, in ord...
Book
Full-text available
Prólogo El avance de la frontera agrícola en toda la provincia de San Luis y la fuerte repercusión que tiene la zona de los Comechingones en el turismo nacional e internacional, trae como consecuencia pérdida de biodiversidad tanto de especies forestales y aromáticas de gran valor paisajístico, como de especies arbustivas y herbáceas de importancia...
Article
Full-text available
Two independent parameters, epicotyl height (cm) and number of induced buds were studied on Pinus pinaster explants to analyse the effects of three phytohormones (6-benzylaminopurine, jasmonic acid, ethylene) which were combined or not in 11 different treatments. Epicotyle length diminished significantly in relation to the control medium (medium wi...
Article
Full-text available
In this paper, the effects of four vermicomposts are analyzed on a variety of growth and development parameters of Digitaria eriantha cv. Mejorada INTA. The vermicomposts used originated from cow, horse, goat and hen feaces combined with pure soil in the following proportions: T1: 0% worm humus + 100% soil; T2: 50% worm humus + 50% soil, and T3: 10...
Article
Full-text available
An in vitro collection has been established with selected European aspen from Palencia province (Spain). Currently, this collection includes 32 high quality clones, selected for their good bearing and healthy state. Most of them belong to different discrete local populations. Populus tremula L. was propagated in proliferation Aspen Culture Medium;...
Article
Full-text available
The beneficial effects of earthworms on soils are widely proved as they increase the microflora and nutrients and encourage plants growth and crop production. The objective of this study was to assess the effect of different concentrations of worm compost from goat manure on production, growth and biomass of Digitaria eriantha cvs. Sudafricana and...
Article
Full-text available
There is considerable evidence suggesting that jasmonates (JAs) play a role in plant resistance against abiotic stress. It is well known that in Angiosperms JAs are involved in the defense response, however there is little information about their role in Gymnosperms. Our proposal was to study the involvement of JAs in Pinus pinaster Ait. reaction t...
Book
Este es un manual teórico practico de las tecnicas de cultivo in vitro para distintos propósitos Se detalla la importancia del cultivo in vitro y sus diversas aplicaciones. Se explican las tecnicas de micropropagación de las plantas nativas y cultivadas , enumerando cada etapa: desifección de explantos, siembra , establecimiento de los mismos, enra...
Article
Full-text available
La supervivencia de los clones depende de dos factores, uno estrictamente genético que proporciona mayor vigor y resistencia a patógenos y por otro lado depende del número de rament o unidades de propágulos de los que se parte y esta condición esta estrictamente ligada a la capacidad de proliferación celular y capacidad de brotación y crecimiento....
Article
Full-text available
Given the importance of D. eriantha as a forage resource for the central temperate semiarid zone of Argentina, a study was carried out to compare the methylation rate of 5-methylcytosine in cytosine residues of genomic DNA and its relationship to growth indicators. The synthetic cultivar Avanzada INTA and a native cultivar, Sudafricana, were used....
Article
Full-text available
To examine the ion accumulation and membrane lipid metabolism in response to salinity we compared two tomato cvs. Pera and Hellfrucht Fruhstamm (HF), considered to be salt-tolerant and sensitive respectively. Na+ and K+ accumulation was significantly higher in roots of cv. Pera after 24 h and 72 h of 100 mM NaCl. While in cv. HF, a temporary increa...
Article
Full-text available
Tomato cultivars with different tolerance to NaCl were analysed for basal endogenous jasmonate (JAs) content, and its changes in response to salt-stress. Steady-state levels of JA and related compounds were higher in the salt-tolerant cv. Pera than in cv. Hellfrucht Frhstamm (HF) and JA levels in both cultivars changed in response to salt-stress. A...
Article
Full-text available
Hedeoma multiflorum Bentham is an aromatic species in danger of extinction in the hilly country of the provinces of San Luis and Cordoba, Argentina. Our aim was to regenerate and propagate it in vitro to get plantlets for future plans of conservation of genetic resources. Tissue disinfectants and in vitro culture media were tested. Whole plants wer...
Article
Full-text available
Germination of fourteen potato hybrids (Solanum tuberosum L.) was studied in the laboratory. The parameters evaluated were: germination energy, germination power, final germination count and germination speed. Significant differences were established among the diverse genetic materials. It was concluded that hybrids I and IX responded very well to...