Search results for "SARI"
showing 10 items of 929 documents
La investigación marxista hoy. Un balance sobrelas temáticas y problemas teóricos en torno al pensamiento y obra de Marx en su 200 aniversario
2018
Use of Botanicals to Suppress Different Stages of the Life Cycle of Fusarium graminearum
2019
Fusarium head blight (FHB) is one of the most important cereal diseases worldwide, causing yield losses and contamination of harvested products with mycotoxins. Fusarium graminearum is one of the most common FHB-causing species in wheat and barley cropping systems. We assessed the ability of different botanical extracts to suppress essential stages of the fungal life cycle using three strains of F. graminearum (FG0410, FG2113, and FG1145). The botanicals included aqueous extracts from white mustard (Sinapis alba) seed flour (Pure Yellow Mustard [PYM] and Tillecur [Ti]) as well as milled Chinese galls (CG). At 2% concentration (wt/vol), PYM and Ti completely inhibited growth of mycelium of …
Biological control of plant diseases
2000
The present chapter reviews the question of developing a microbial control method of plant diseases. All problems which may occur, from the initial screening of an efficient biocontrol agent to the final step of integration of the biological control method into the crop management system are briefly examined.
Assessment of allyl isothiocyanate as a fumigant to avoid mycotoxin production during corn storage
2016
The occurrence of fungi and mycotoxins in foods modify sensorial properties and represents a health risk for consumers, and the use of natural antimicrobials may be an alternative to reduce this problem. The objective of this study was evaluate the potential of allyl isothiocyanate (AITC) in inhibit the production of mycotoxins in corn kernels by Aspergillus parasticus, Fusarium tricinctum, Fusarium verticillioides, Alternaria alternata and Gibberela zeae. Kernels were treated with gaseous AITC at 50, 100 or 500 μL/L during 48 h in hermetic flasks. Then, flasks were opened for 24 h and 100 g of corn were inoculated with 105 conidia/g of either fungal species. Flasks were kept at 23 °…
Degradation of aromatic compounds through the β-ketoadipate pathway is required for pathogenicity of the tomato wilt pathogenFusarium oxysporumf. sp.…
2012
Plant roots react to pathogen attack by the activation of general and systemic resistance, including the lignification of cell walls and increased release of phenolic compounds in root exudate. Some fungi have the capacity to degrade lignin using ligninolytic extracellular peroxidases and laccases. Aromatic lignin breakdown products are further catabolized via the β-ketoadipate pathway. In this study, we investigated the role of 3-carboxy-cis,cis-muconate lactonizing enzyme (CMLE), an enzyme of the β-ketoadipate pathway, in the pathogenicity of Fusarium oxysporum f. sp. lycopersici towards its host, tomato. As expected, the cmle deletion mutant cannot catabolize phenolic compounds known to …
Ecological fitness of the biocontrol agent Fusarium oxysporum Fo47 in soil and its impact on the soil microbial communities
2009
Some nonpathogenic strains of Fusarium oxysporum can control Fusarium diseases responsible for severe damages in many crops. Success of biological control provided by protective strains requires their establishment in the soil. The strain Fo47 has proved its efficacy under experimental conditions, but its ecological fitness has not been carefully studied. In a series of microcosm studies, the ability of a benomyl-resistant mutant Fo47b10 to establish in two different soils was demonstrated. One year after its introduction at two concentrations in the disinfected soils, the biocontrol agent (BCA) established at similar high population densities, whereas in the nondisinfected soils it survive…
Ciclo y dinámica económica en Europa
1999
El objeto de estudio de la tesis son los ciclos económicos, realizándose cuatro estudios empíricos utilizando técnicas de series temporales. La tesis consta de cuatro capítulos, a los que se añade un apartado final de conclusiones El objetivo del primer capítulo es determinar si el ciclo económico es un fenómeno con características similares en las principales economías de mercado, para ello se caracterizan las propiedades cíclicas de un grupo amplio de países (países del G-7 más España y Suiza). Adicionalmente, en este capítulo se analiza la robustez de las propiedades cíclicas al método de filtrado, así como la estabilidad temporal de éstas. Los resultados indican que el ciclo es un fenóm…
Finding books in the Psychology and Sport Library
2015
How to search books in the Library
Evolución y distribución sectorial de las fusiones de empresas españolas
2000
Es evidente que los procedimientos de fusión han sido empleados por las empresas españolas como estrategias para afrontar los retos competitivos en sus diferentes entornos económicos y, aunque han sido estudiados sus causas y resultados; el impacto global en el contexto de la economía española y su utilización real no han sido suficientemente investigados, sobre todo, debido a la falta de bases estadísticas apropiadas. En este trabajo, partiendo de la información de las últimas dos décadas, se analiza cuál ha sido su empleo efectivo, características y evolución, así como aquellos sectores más intensamente afectados. Para obtener una base que permita vislumbrar las posibles tendencias futura…
El consentimiento informado de los menores de edad en el ámbito sanitario
2021
: El consentimiento informado aparece como un derecho de todo paciente a decidir en el ámbito sanitario. En este marco, es necesario determinar si los menores de edad han de ejercitar este derecho o si, por el contrario, precisan de la intervención de un tercero para llevarlo a cabo. A este respecto, nuestra legislación actual reconoce, con carácter general, el derecho a decidir de este colectivo. No obstante, en ocasiones pueden producirse limitaciones a su ejercicio motivadas bien por la ausencia de capacidad real, bien por el principio de interés superior. En definitiva, se trata de alcanzar el mayor beneficio para los menores de edad en el campo de la salud, evitando que se produzcan pe…