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The Strawberry Fruit Fra a Allergen Functions in Flavonoid Biosynthesis

Molecular Plant 2010年第1期3卷 113-124页

作者： Cristina Munoz Thomas Hoffmann nieves medina escobar Felix Ludemann Miguel A. Botella Victoriano Valpuesta Wilfried Schwab Departamento de Biologia Molecular y Bioquimica Universidad de Malaga 29071 Malaga Spain Biomolecular Food Technology Technische Universit~t M0nchen Hochfeldweg 1 85354 Freising Germany

The strawberry Fra a I allergen is a homolog of the major birch pollen allergen Bet v 1. It is synthesized by red ripe fruits of Fragaria x ananassa while white fruits of a mutant genotype, which is known to be tolerated by individuals affected by allergy, are devoid of it. Proteomic analyses have shown that Fra a 1 is down-regulated in the tolerated white- fruited genotype along with enzymes of the anthocyanin pigment pathway. In this study, we report the spatial and tem- poral expression of three Fra a genes that encode different isoforms, and the transient RNAi-mediated silencing of the Fra a genes in strawberry fruits of the red-fruited cultivar Elsanta with an ihpRNA construct. As a consequence of reduced levels of Fra a mRNAs, fruits were obtained that produced significantly decreased levels of anthocyanins and upstream metabolites. This effect is consistent with the parallel down-regulation of the phenylalanine ammonia lyase （FaPAL） and to a lesser extent of the chalcone synthase （FaCHS） transcript levels also found in these fruits. In naturally occurring white- fruited genotypes of F. chiloensis and F. vesca, Fra a transcript levels are higher than those of the red-fruited varieties, likely to compensate for the low expression levels of FaPAL and FaCHS in these mutant genotypes. The results demonstrate that Fra a expression is directly linked to flavonoid biosynthesis and show that the Fra a allergen has an essential biological function in pigment formation in strawberry fruit.

关键词： Fragaria flavonoid anthocyanin phenylpropanoid allergen pathogenesis-related proteins.

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Model based current mode control design and experimental validation for a 3φ rectifier under unbalanced grid voltage conditions

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Journal of Modern Power Systems and Clean Energy 2018年第4期6卷 777-790页

作者： P.R.MARTíNEZ-RODRIGEZ Jose M.SOSA Samuel ITURRIAGA-medina Gerardo escobar Gerardo VáZQUEZ-GUZMáN Andres A.VALDEZ-FERNáNDEZ School of Sciencies UASLP Laboratory of Electrical and Power Electronics ITESI School of Engineering Universidad Modelo

This paper addresses the control design and the experimental validation of a current mode control for a three phase voltage source rectifier. The proposed control law is able to fulfill the voltage regulation and the current tracking control objectives despite of unbalanced and distorted grid voltages. The proposed control law consists of two loops, which are referred as inner tracking loop and the outer voltage regulation loop. The inner loop is designed to provide damping to the system, which also includes and adaptive mechanism. The construction of the current reference is based on the positive component detection of thegrid voltage. Therefore, the current produced by the power rectifier is proportional to the fundamental component of the grid voltage, despite of the presence of unbalanced grid voltages. The voltage regulation loop is designed as a proportional-integral controller, which is aimed to regulate the DC output voltage to a desired level. Finally, experimental results are obtained in an experimental prototype of2 kW to evaluate the performance of the proposed controller.

关键词： Pulse-width modulation rectifier Power factor correction Positive-component Current mode control

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Effect of the enrichment time with the tuna orbital oil emulsion on the fatty acids profile of juveniles of Artemia franciscana

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Aquaculture and Fisheries 2021年第1期6卷 69-74页

作者： Mario nieves-Soto Ricardo Lozano-Huerta Diana J.Lòpez-Peraza María A.medina-Jasso Miguel AHurtado-Oliva JoséF.Bermudes-Lizárraga Facultad de Ciencias del Mar Universidad Autónoma de SinaloaPaseo Claussen s/n.Los PinosMazatlánC.P.8200Mexico

Artemia is deficient in polyunsaturated fatty acids(PUFAs),particularly in arachidonic(ARA,20:4n-6),eicosapentaenoic(EPA,20:5n-3),and docosahexaenoic acid(DHA,22:6n-3).The aim of this study was to determine the optimal time in which the higher contents of PUFAs in juveniles of Artemia franciscana were obtained by the effect of enrichment with the tuna orbital oil *** enrichment periods were evaluated:3,6,9,12,15 and 18 h,in addition to a control treatment(0 h).The most abundant fatty acids in *** were monounsaturated(43.10%±4.35–52.92%±5.82%),followed by saturated(33.83%±1.71–42.33%±2.31%)and PUFAs(8.86%±2.83%–21.32%±2.38%).ARA decreased over the enrichment time;the maximum content was 5.74±0.37%at 3 h,which was not statistically different with respect to the content recorded at 0 *** highest content of EPA was at 3 h(6.47%±1.44%),without significant differences with the content registered at 0 h,while that from 6 h and until 15 h tended to decrease *** 6 h,the content of DHA(8.84%±2.72%)was significantly higher compared to the rest of the treatments,which did not differ among themselves,or with the *** to the 6 h and until 15 h,the content of PUFAs tended to decrease,which could indicate the metabolization of them by ***,coupled with the possible oxidation of these fatty acids in the enrichment solution.

关键词： Artemia franciscana juveniles Bioencapsulation Essential fatty acids Tuna orbital oil emulsion

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Mobility Habitus in the Literature From 2020 to 2024

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Journalism and Mass Communication 2024年第2期14卷 53-62页

作者： María del Rosario Molina González Cruz García Lirios Julio E Crespo Isabel Cristina Rincón Rodríguez Jorge Enrique Chaparro medina Francisco Rubén Sandoval Vázquez Enrique Martínez Muñoz JoséAlfonso Aguilar Fuentes Alfredo Barrera escobar Universidad de Sonora NavojoaMéxico Universidad de la Salud Ciudad de MexicoMéxico Universidad de Los Lagos OsornoChile Universidad de Santander UDES BucaramangaColombia Universidad de Investigación y Desarrollo UDI BucaramangaColombia Universidad Autónoma del Estado de Morelos CuernavacaMéxico Universidad Autónoma del Estado de Hidalgo PachucaMéxico Universidad Autónoma del Estado de México HuehuetocaMéxico Universidad Fidel Velazquez EdomexMéxico

The objective of the present work is modeling the mobility habitus in the public transport system with low Co2 emission mechanics in the center of *** this sense,a documentary work was carried out with a review of sources indexed to national repositories,using the Delphi technique for the content analysis and the specification of the model.A study was conducted with a selection of 100 students to establish the reliability,linearity,sphericity,adequacy,and validity of an instrument from which a relationship of dependence between income and mobility habitus was *** limits of the search,selection,and processing of information are recognized,and it is recommended to extend the research to international repositories,as well as to employ a more sophisticated technique.

关键词： spatiality habitus capacities model complexity

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