Relevant bibliographies by topics / Cellule vegetale

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Cellule vegetale'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Cellule vegetale"

1

Bompiani, Adriano. "L’elaborazione di “regole” per le innovazioni biotecnologiche." Medicina e Morale 49, no. 4 (August 31, 2000): 713–50. http://dx.doi.org/10.4081/mem.2000.765.

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Come è noto, l'unione Europea ha fra i suoi scopi quello di favorire lo sviluppo sociale ed economico dei Paesi aderenti, facilitando la ricerca scientifica, l’innovazione tecnologica, la produzione di beni e la circolazione degli stessi nell’ambito dell’Unione, eliminando per quanto è possibile differenze, normative e conflitti commerciali. Con questo spirito, dopo anni di difficile lavoro, è stata emanata la Direttiva 98/44/CE del Parlamento Europeo e del Consiglio (6luglio 1998) che riguarda la protezione giuridica delle invenzioni biotecnologiche, ne presupposto che si tratti di genoma – sia esso di origine vegetale, animale o umano – in quanto risultati da “invenzioni” suscettibili di applicazioni industriali e non dal mero isolamento (“scoperta”). L’Autore, che già ha esaminato in un precedente contributo gli aspetti etici dell’impiego delle biotecnologie nel campo vegetale e animale (v. Medicina e Morale 2000, 3: 449-504), si sofferma a descrivere quanto prevede la Direttiva 98/44/CE stessa, assieme ad altre norme internazionali precedentemente emanat, per la tutela dell’ambiente, degli animali e degli organismi umani. L’Autore riconosce che la direttiva vieta, nel dispositivo, lo sfruttamento commerciale che sia contrario all’ordine pubblico e al buon costume, fornendo gli esempi concreti dei divieti applicabili ai processi di clonazione umana a scopo riproduttivo, di modificazione dell’identità genetica germinale dell’essere umano; di modificazione degli embrioni umani a fini commerciali e industriali; di modificazione dell’identità genetica animale di natura tale da provocare sofferenza negli stessi, senza utilità sostanziale per l’uomo o per l’animale. Tuttavia la Direttiva – sotto l’aspetto giuridico – consente l’utilizzazione di embrioni umani (sia pure non direttamente ed espressamente prodotti a scopo di ricerca in base all’art. 18 della Convenzione sui diritti dell’uomo e la biomedicina) a scopo sperimentale e per applicazioni biotecnologiche riguardanti la produzione di cellule staminali od i medicamenti. L’Autore esamina anche il dibattito che è seguito alla emanazione della Direttiva soprattutto a livello di Assemblea parlamentare del Consiglio d’Europa (Strasburgo) in merito alle preoccupazioni dell’opinione pubblica sui cosiddetti “cibi transgenici” (raccomandazione n. 1398 (1998) dal titolo “sicurezza del consumatore e qualità degli alimenti”), nella quale è stata espressa contrarietà alla brevettabilità degli organismi viventi, pur riconoscendo la necessità di assicurare un’adeguata protezione ai diritti dell’”invenzione” (proprietà intellettuale) [Raccomandazione 1417/1999]. Questi problemi sono stati affrontati ma non risolti nella conferenza internazionale di Oviedo (16-19 maggio 19999) organizzata dal Consiglio d’Europa. Il Comitato Direttivo di Bioetica del medesimo Consiglio d’Europa è stato indicato di esprimere “parere” sulla complessa materia; nel frattempo sono intervenute la conferenza di Seattle e Montreal, ove è stato firmato, nel gennaio 2000, un Protocollo sulla biosicurezza che regolamenta il commercio internazionale di sementi e sostanze geneticamente modificate ritenuti pericolosi per l’ambiente e la salute, escludendo però i prodotti finiti, e perciò il cibo transgenico. Nel momenti in cui – scadendo la moratoria –la Direttiva 98/44/CE entrerà in vigore (31 luglio 2000) essendo improbabile l’accettazione delle argomentazioni di invalidazione sollevate da Olanda e Italia, l’Autore insiste per l’adozione del “principio di precauzione”, esplicitamente incorporato nel diritto comunicato relativo alla protezione della salute, oltreché alla tutela dell’ambiente, che dovrà essere tuttavia meglio specificato nella sua estensione e nelle conseguenze attese. Un secondo principio, quello della “trasparenza”, richiede un’ulteriore affinamento delle informazioni rivolte al consumatore, tramite una più chiara etichettatura che consenta una scelta realmente libera e consapevole dei prodotti derivanti da organismi geneticamente modificati posti in commercio. Dovrà essere perseguita la ricerca, escludendo peraltro l’uso dell’embrione umano.
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2

Tucker, Larry A. "Fruit and Vegetable Intake and Telomere Length in a Random Sample of 5448 U.S. Adults." Nutrients 13, no. 5 (April 23, 2021): 1415. http://dx.doi.org/10.3390/nu13051415.

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The relationship between fruit and vegetable intake and telomere length was examined using a cross-sectional design and an NHANES random sample of 5448 U.S. adults. Fruit and vegetable (F&V) consumption was assessed using a 24 h recall, and telomere length, an index of cellular aging, was measured using the quantitative polymerase chain reaction method. Telomere length was linearly related to F&V intake when combined (F = 22.7, p < 0.0001) and also when separated as fruit (F = 7.2, p < 0.0121) or vegetables (F = 15.4, p < 0.0005), after adjusting for covariates. Specifically, telomeres were 27.8 base pairs longer for each 100 g (3.5 ounces) of F&V consumed. Because each additional year of chronological age was associated with telomeres that were 14.9 base pairs shorter, when women and men were analyzed together, results indicated that a 100 g (3.5 oz) per day increment in F&V corresponded with 1.9 years less biological aging. When the 75th percentile of F&V intake was compared to the 25th, the difference was 4.4 years of cellular aging. When separated by sex, fruits and vegetables were both related to telomere length in women, but only vegetable intake was predictive of telomere length in men. In conclusion, evidence based on a random sample of U.S. adults indicates that the more the servings of F&V, the longer telomeres tend to be.
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LEE, DONG HWAN, JIN-BEOM KIM, MIHYUN KIM, EUNJUNG ROH, KYUSUK JUNG, MINSEON CHOI, CHANGSIK OH, JAEHYUK CHOI, JONGCHUL YUN, and SUNGGI HEU. "Microbiota on Spoiled Vegetables and Their Characterization." Journal of Food Protection 76, no. 8 (August 1, 2013): 1350–58. http://dx.doi.org/10.4315/0362-028x.jfp-12-439.

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Spoilage causes vegetables to deteriorate and develop unpleasant characteristics. Approximately 30% of fresh vegetables are lost to spoilage, mainly due to colonization by bacteria. In the present study, a total of 44 bacterial isolates were obtained from a number of spoiled vegetables. The isolates were identified and classified into 20 different species of 14 genera based on fatty acid composition, biochemical tests, and 16S rDNA sequence analyses. Pseudomonas spp. were the species most frequently isolated from the spoiled vegetables. To evaluate the spoilage ability of each species, a variety of fresh vegetables were treated with each isolate and their degree of maceration was observed. In addition, the production of plant cell wall-degrading enzymes (PCWDEs), such as cellulase, xylanase, pectate lyase, and polygalacturonase, was compared among isolates to investigate their potential associations with spoilage. Strains that produce more PCWDEs cause spoilage on more diverse plants, and pectinase may be the most important enzyme among PCWDEs for vegetable spoilage. Most gram-negative spoilage bacteria produced acylated homoserine lactone, a quorum-sensing signal molecule, suggesting that it may be possible to use this compound effectively to prevent or slow down the spoilage of vegetables contaminated with diverse bacteria.
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dos Santos Baião, Diego, Davi Vieira Teixeira da Silva, and Vania Margaret Flosi Paschoalin. "A Narrative Review on Dietary Strategies to Provide Nitric Oxide as a Non-Drug Cardiovascular Disease Therapy: Beetroot Formulations—A Smart Nutritional Intervention." Foods 10, no. 4 (April 15, 2021): 859. http://dx.doi.org/10.3390/foods10040859.

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Beetroot is a remarkable vegetable, as its rich nitrate and bioactive compound contents ameliorate cardiovascular and metabolic functions by boosting nitric oxide synthesis and regulating gene expressions or modulating proteins and enzyme activities involved in these cellular processes. Dietary nitrate provides a physiological substrate for nitric oxide production, which promotes vasodilatation, increases blood flow and lowers blood pressure. A brief narrative and critical review on dietary nitrate intake effects are addressed herein by considering vegetable sources, dosage, intervention regimen and cardioprotective effects achieved in both healthy and cardiovascular-susceptible individuals. Compared to other nitrate-rich vegetables, beets were proven to be the best choice for non-drug therapy because of their sensorial characteristics and easy formulations that facilitate patient adherence for long periods, allied to bioaccessibility and consequent effectiveness. Beets were shown to be effective in raising nitrate and nitrite in biological fluids at levels capable of promoting sustained improvement in primary and advanced hemodynamic parameters.
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Loc, Marta, Nemanja Delić, Dragana Budakov, Vera Stojšin, Mladen Petreš, Jelena Medić, Tatjana Dudaš, and Mila Grahovac. "Pectolytic activity of Pectobacterium carotovorum subsp. brasiliense on different root vegetables." Biljni lekar 48, no. 6 (2020): 610–18. http://dx.doi.org/10.5937/biljlek2006610l.

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Bacteria from Enterobacteriaceae family (SRE) are significant problem in plant production, not only during vegetation, in the field, but also during storage and marketing of agricultural commodities. Species P. carotovorum subsp. brasiliense (Pcb) is a newly identified member of Enterobacteriaceae family. It causes soft rot of different plant species, including root vegetables. Pcb is described as a new subspecies of P. carotovorum due to differences in phenotypic and genotypic characteristic, more pronounced virulence and aggressiveness. Patohogenicity of this bacterium is based on the production of several enzymes: pectatliase, polygalacturonase, cellulase and proeteases. The aim of this study was to determine whether and at which rate Pcb isolates originating from potato plants exhibit pectolytic activity on root of different root vegetable species - carrot, radish, celery, kohlrabi and beetroot. The obtained data confirmed wide host range of the bacterium Pectobacterium carotovorum subsp. brasiliense, but pointed to significant differences in pectolytic activity on different species of root vegetables (carrot, radish, celery, kohlrabi), while on beetroot tested Pcb isolates did not exhibit pectolytic activity. Moreover, on same species of root vegetables different levels of pectolytic activity of tested Pcb isolates were recorded.
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Li, Yanyan, Tao Zhang, and Grace Chen. "Flavonoids and Colorectal Cancer Prevention." Antioxidants 7, no. 12 (December 10, 2018): 187. http://dx.doi.org/10.3390/antiox7120187.

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Colorectal cancer (CRC) is the third most common cancer, but despite advances in treatment, it remains the second most common cause of cancer-related mortality. Prevention may, therefore, be a key strategy in reducing colorectal cancer deaths. Given reports of an inverse association between fruit and vegetable consumption with colorectal cancer risk, there has been significant interest in understanding the metabolism and bioactivity of flavonoids, which are highly abundant in fruits and vegetables and account for their pigmentation. In this review, we discuss host and microbiota-mediated metabolism of flavonoids and the potential mechanisms by which flavonoids can exert protective effects against colon tumorigenesis, including regulation of signaling pathways involved in apoptosis, cellular proliferation, and inflammation and modulation of the gut microbiome.
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Neupane, Karuna, and Rama Khadka. "Production of Garbage Enzyme from Different Fruit and Vegetable Wastes and Evaluation of its Enzymatic and Antimicrobial Efficacy." Tribhuvan University Journal of Microbiology 6 (December 7, 2019): 113–18. http://dx.doi.org/10.3126/tujm.v6i0.26594.

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Objectives: To evaluate the enzymatic and antimicrobial efficacy of enzyme from garbage produced from different fruits and vegetable wastes. Methods: This study was conducted from October-2018 to February-2019 in the laboratory of Padma Kanya Multiple College, Bagbazar, Kathmandu, Nepal. This study was carried for production, analysis of enzymatic and antimicrobial efficacy by using yeast (Saccharomyces cerevisae) and bacteria (Bacillus species) in 5 fruits peels, Mosambi (Citrus limetta), Pomegranate (Punica granatum), Pineapple (Ananas comosus), Papaya (Carica papaya) and mixed fruits collected from fresh fruit stall and vegetable peels collected from college’s hostel. The fermentation mixture was made in the ratio 1:3:10 (1 part brown sugar, 3 parts fruits/vegetable peels and 10 parts water) and left for 3 months for fermentation. Results: After fermentation, enzyme activity (amylase, protease, caseinase, cellulase and lipase) and antimicrobial efficacy (S. aureus, S. aureus (ATCC 25923), Bacillus spp, Salmonella Typhi, E. coli, E. coli (ATCC 25922), Shigella spp, Pseudomonas aeruginosa) were analyzed. All the samples showed amylase and caseinase enzyme activity, only Pineapple (Ananascomosus), Papaya (Carica papaya) and Mixed fruit showed protease enzyme activity while only Pomegranate (Punicagranatum) showed lipase enzyme activity. In antimicrobial efficacy test, garbage enzyme produced from vegetable sample didn’t show antimicrobial activity with bacteria used except E. coli (ATCC 25922)and S. aureus (ATCC 25923). Similarly, garbage enzyme produced from Mixed fruit and Papaya (Carica papaya) didn’t show antimicrobial activity with Salmonella Typhi and S. aureus (ATCC 25923) respectively but garbage enzyme from other wastes showed antimicrobial activity with bacteria used in test. Conclusion: Different fruits and vegetables wastes showed different enzyme activity and antimicrobial activity.
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Song, Wei, Christopher M. Derito, M. Keshu Liu, Xiangjiu He, Mei Dong, and Rui Hai Liu. "Cellular Antioxidant Activity of Common Vegetables." Journal of Agricultural and Food Chemistry 58, no. 11 (June 9, 2010): 6621–29. http://dx.doi.org/10.1021/jf9035832.

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Kolb, Hubert, Kerstin Kempf, and Stephan Martin. "Health Effects of Coffee: Mechanism Unraveled?" Nutrients 12, no. 6 (June 20, 2020): 1842. http://dx.doi.org/10.3390/nu12061842.

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The association of habitual coffee consumption with a lower risk of diseases, like type 2 diabetes mellitus, chronic liver disease, certain cancer types, or with reduced all-cause mortality, has been confirmed in prospective cohort studies in many regions of the world. The molecular mechanism is still unresolved. The radical-scavenging and anti-inflammatory activity of coffee constituents is too weak to account for such effects. We argue here that coffee as a plant food has similar beneficial properties to many vegetables and fruits. Recent studies have identified a health promoting mechanism common to coffee, vegetables and fruits, i.e., the activation of an adaptive cellular response characterized by the upregulation of proteins involved in cell protection, notably antioxidant, detoxifying and repair enzymes. Key to this response is the activation of the Nrf2 (Nuclear factor erythroid 2-related factor-2) system by phenolic phytochemicals, which induces the expression of cell defense genes. Coffee plays a dominant role in that regard because it is the major dietary source of phenolic acids and polyphenols in the developed world. A possible supportive action may be the modulation of the gut microbiota by non-digested prebiotic constituents of coffee, but the available data are still scarce. We conclude that coffee employs similar pathways of promoting health as assumed for other vegetables and fruits. Coffee beans may be viewed as healthy vegetable food and a main supplier of dietary phenolic phytochemicals.
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Sobotka, J., J. Krejčí, and J. Blahovec. "Equipment for the determination of dielectric properties of vegetable tissue during its mechanical loading." Research in Agricultural Engineering 53, No. 4 (January 7, 2008): 143–48. http://dx.doi.org/10.17221/1955-rae.

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The internal structures of agricultural products change substantially in the course of the products deformation. One of the main changes in this process is the loss of the water content and water solutions generally due to the squeezing out of the cellular sap. The water content can be detected also by electric conductivity measured at different frequencies. The precise measurement of the electric conductivity during the deformation of soft agricultural products can be used as a simple indicative method for the study of the processes that control the squeezing out of the cellular sap including the filtration abilities of the cellular walls. In the paper, the experimental equipment is described that is able to detect the impedance of the vegetable tissue specimens during their compression between two plates. The equipment determines the sample impedance from a direct measurement of three voltages in the circuit that contains the tested specimen. The equipment is able to analyse the specimen properties at more than ten different frequencies up to 1 MHz. The formulas for the calculation of the real and the imaginary components of the relative permittivity are also given.
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Dissertations / Theses on the topic "Cellule vegetale"

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ROSZAK, ROBERT. "Etude de l'hypothese d'une endocytose du complexe t par la cellule vegetale." Amiens, 1998. http://www.theses.fr/1998AMIE0110.

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La transformation de vegetaux par agrobacterium tumefaciens est une technique abondamment utilisee pour transmettre des genes d'interet agronomique a des plantes economiquement interessantes. Neanmoins, le mecanisme moleculaire permettant la transformation genetique par agrobacterium tumefaciens est incompletement explique. Une des interrogations majeures est la facon dont le complexe t produit par l'agrobacterie est capable de traverser le plasmalemme de la cellule vegetale. Pour repondre a cette question, nous avons compare le mecanisme de la transformation a l'infection virale de cellules animales. Les nombreuses similitudes qui existent dans l'organisation des virus animaux (adenovirus, parvovirus) et celle du complexe t d'agrobacterium tumefaciens nous a incite a penser que ce dernier entrait dans les cellules vegetales par un mecanisme analogue a celui de ces virus, l'endocytose. Nous avons alors etudie l'hypothese de l'endocytose du complexe t. Pour cela des inhibiteurs de l'endocytose ont ete employes. Apres verification de leurs effets sur l'endocytose chez arabidopsis thaliana, leurs effet sur le transfert du complexe t de l'agrobacterie vers la cellule vegetale ont ete analyses. Il apparait que certains (cytochalasine b, brefeldine a, monensine et phorbol-12-myristate-13-acetate) inhibent la transformation transitoire de cellules d'arabidopsis thaliana. Par ailleurs, nous avons pu montrer par immunolocalisation que la proteine vire2, la proteine la plus representee dans le complexe t, etait excretee dans le milieu extracellulaire. Cette excretion est indispensable a la fonction de cette proteine. Ainsi, notre travail montre que la proteine vire2 est excretee par la bacterie, avant de penetrer dans la cellule vegetale par un mecanisme, potentiellement similaire a l'endocytose de virus animaux ou de toxines bacteriennes.
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Andrianarison, Rivo-Hery. "Métabolisme des acides gras polyinsaturés dans les cellules végétales : rôles catalytiques de la lipoxygénase, de l'hydropéroxyde lyase et de la triène-synthétase." Limoges, 1991. http://www.theses.fr/1991LIMO301A.

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Pascal, Nadine. "Quelques observations sur les effets d'une carence de fer sur la cellule végétale non chlorophyllienne." Grenoble 1, 1992. http://www.theses.fr/1992GRE10165.

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Des cellules isolees d'erable (acer pseudoplatanus l. ) cultivees dans une solution nutritive complete ou depourvue de fer ont ete comparees afin d'etudier les impacts d'une deficience en fer sur la cellule vegetale non photosynthetique. En premier lieu, nous avons observe que l'absence de fer dans le milieu de culture ralentit le rythme des divisions cellulaires et impose un arret de croissance apres 1 a 1,5 generations. A l'issue de la phase de division, les cellules presentent une senescence rapide et meurent de facon prematuree. Dans le but de cerner les evenements responsables de ces perturbations physiologiques, nous avons explore quelques fonctions metaboliques majeures de la cellule d'erable: la synthese des grandes chaines polycarbonees insaturees et la respiration. Ainsi, l'analyse des acides gras insatures et des carotenoides a montre que la carence de fer bloque severement certains mecanismes membranaires de desaturation en cis et en trans respectivement: la desaturation du c18:2 en c18:3 par les desaturases microsomiales et/ou plastidiales; la desaturation du phytoene, precurseur des carotenoides, par la phytoene desaturase de l'enveloppe plastidiale. L'implication du fer dans ce dernier systeme n'etait pas connue jusqu'a present. Pendant l'installation de la carence de fer, la respiration basale des cellules reste normale. Toutefois, la vitesse de la respiration decouplee ne cesse de decroitre sous l'effet du dysfonctionnement progressif de la succinate deshydrogenase: seul le transfert des electrons via le complexe ii de la chaine respiratoire est en effet altere, malgre une depletion generalisee en centres fer-soufre et en cytochromes mitochondriaux. A l'issue de la phase de division, les mitochondries fonctionnent au maximum de leurs capacites sans pouvoir repondre integralement aux besoins energetiques du metabolisme. S'ensuit alors un effondrement de l'activite respiratoire, associe a une disparition totale des cretes de la membrane interne des mitochondries. La desorganisation de la fonction respiratoire sous l'influence de la carence de fer est probablement le facteur responsable de la mort des cellules d'erable
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Waffo, Teguo Pierre. "Production de polyphénols par culture in vitro de cellules de vigne : isolement des catéchines et d'un stilbène." Bordeaux 2, 1995. http://www.theses.fr/1995BOR2P089.

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Seilhean, Véronique. "La cellule apicale d'une pteridophyte, nephrolepis biserrata (sw. ) schott : modifications de la structure nucleaire en fonction de l'activite cellulaire." Paris 6, 1987. http://www.theses.fr/1987PA066621.

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Une etude detaillee de la structure a ete entreprise afin d'examiner les relations existant entre l'organisation nucleaire et l'activite cellulaire. Les noyaux de nephrolepis biserrata ont une structure chromerique sans chromocentre. L'analyse cytologique en microscopie phtonique et electronique montre que la structure chromaticienne du noyau de l'apicale est tres diffuse. L'application de la cytophotometrie a balayage permet d'obtenir des donnees quantitatives. Dans les cellules mitotiquement actives, la proportion d'adn condense ne varie pas au cours du cycle mais la densite moyenne augmente lors du passage en phase g2. La proportion d'adn condense, en volume et en teneur, est plus faible dans les nouyaux de la cellule apicale et des derivees que dans ceux des autres cellules du meristelme. Une relation entre l'organisation de la chromatine et les fonctions du noyau a pu etre degagee. L'ensemble de ces resultats permet de rapprocher les proprietes de l'apicale de celles des cellules zygotiques
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Petel, Gilles. "Etude comparee chez le tubercule dormant et non dormant de topinambour (helianthus tuberosus l. ) de l'atpase et du systeme transporteur d'electrons lies au plasmalemme de la cellule parenchymateuse." Clermont-Ferrand 2, 1986. http://www.theses.fr/1986CLF21023.

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Mise en evidence des activites enzymatiques generatrices de potentiel membranaire; etude de leur potentialite de fonctionnement dans le materiel dormant et non dormant puis comparaison des potentialites existantes dans les 2 types de materiels. L'etude des proprietes de l'atpase (difference de lambda m) constitue un argument en faveur d'un remaniement membranaire au cours de la levee de dormance. Etablissement de nouvelles correlations intercellulaires a courte distance conferant de nouvelles proprietes morphogenetiques aux bourgeons
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Rontein, Denis. "Métabolisme intermédiaire dans des cellules végétales : de l'expression des gènes de la phosphoénolpyruvate carboxylase à la régulation de son flux." Bordeaux 2, 2000. http://www.theses.fr/2000BOR28811.

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BELCOUR, BEATRICE. "Etude de la production d'irone par traitement bacterien de rhizome d'iris et par culture de cellules et d'organes vegetaux." Nancy 1, 1990. http://www.theses.fr/1990NAN1XXXX.

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Mosiniak-Bessoles, Michèle. "Contribution a l'etude des oscillations spontanees de l'assemblage cellulosique dans les parois des cellules vegetales." Paris 6, 1987. http://www.theses.fr/1987PA066189.

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Un systeme oscillatoire tres caracteristique des parois cellulaires des cellules vegetales est constitue par l'assemblage helicoidal. Par des recherches methodologiques de demasquage et de dissection des edifices microfibrillaires, par une analyse stereoscopique et par une modelisation des variations dans l'espace et dans le temps, on etablit la dynamique, la gamme et les modalites d'adaptation du systeme en fonction de la differenciation cellulaire afin de mieux comprendre la morphogenese parietale
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COUCHY, ISABELLE. "Recherche de proteines associees a la morphodynamique de l'appareil de golgi dans les cellules vegetales." Paris 11, 2001. http://www.theses.fr/2001PA112017.

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L'objectif de ce travail est d'identifier des proteines associees a la morphodynamique de l'appareil de golgi dans les cellules vegetales. Trois groupes de proteines ont ainsi ete etudies : 1) des proteines associees aux membranes golgiennes. Nous definissons deux anticorps monoclonaux, mac254 et mac266, comme des marqueurs du golgi a l'echelle optique. Une etude comparative avec jim84, seul monoclonal reconnu comme marqueur du golgi, montre que tous ces anticorps decrivent differentes sous-familles de proteines portant toutes des branchements sucre de type lewis a. De plus, un marquage differentiel de surfaces cellulaires suggere une regulation de l'exportation des proteines reconnues fonction de l'environnement cellulaire. 2) des proteines candidates a la regulation du mouvement des unites golgiennes dans le cytoplasme. Nous avons initie une etude sur les proteines rho et les proteines de type myosine et spectrine qui pourraient jouer un role entre la dynamique de l'actine et les mouvements golgiens. Les resultats ne permettent pas d'identifier de myosine ou de spectrine participant au mouvement golgien. Ils soulignent la difficulte d'etudier les proteines rho par des approches classiques de toxines. Par contre ils indiquent qu'une petite proteine de 18 kda reconnue par les anticorps animaux anti-rac1 est associee aux membranes golgiennes, probablement par la face cis du golgi. 3) un complexe proteique, le coatomere, connu dans la cellule animale pour initier le bourgeonnement de vesicules mantelees de type copi a partir des membranes golgiennes. Nous avons mis en evidence une proteine de 100 kda reconnue par des anticorps anti--cop, associee aux membranes golgiennes. Une analyse par spectrometrie de masse definit cette proteine comme une -cop vegetale. Au moins deux autres proteines, qui pourraient etre associees a -cop et former un complexe de type coatomere, ont ete visualisees : -cop et -cop. Enfin la surexpression de arf1, petite proteine g en charge du recrutement du coatomere sur la membrane golgienne, retarde notamment son developpement. Une quatrieme partie reprend ces experiences dans un modele cellulaire a croissance apicale, le tube pollinique. Ces donnees sont discutees dans le contexte de la regulation de la morphodynamique du golgi.
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Books on the topic "Cellule vegetale"

1

Botany: An introduction to plant biology. 2nd ed. Philadelphia: Saunders College Pub., 1995.

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Mauseth, James D. Botany: An introduction to plant biology. 2nd ed. London: Saunders College Publ., 1995.

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Botany: An introduction to plant biology. Philadelphia: Saunders College Pub., 1991.

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Botany: An introduction to plant biology. Philadelphia: Saunders College Publishing, 1991.

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Botany: An introduction to plant biology. 4th ed. Sudbury, Mass: Jones and Bartlett Publishers, 2009.

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Gemmotherapy and oligotherapy: Regenerators of dying intoxicated cells : tridosha of cellular regeneration. Philadelphia: Xlibris Corporation, 2002.

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1943-, Green C. E., ed. Plant tissue and cell culture: Proceedings of the VIth International Congress on Plant Tissue and Cell Culture, held at the University of Minnesota, August 3-8, 1986. New York: A.R. Liss, 1987.

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Hiron, R. W. Vegetable propagation in cellular trays. The Ministry, 1985.

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Mauseth, James D. Botany: An Introduction to Plant Biology. Jones & Bartlett Learning, LLC, 2016.

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Botany: An Introduction to Plant Biology, Third Edition. 3rd ed. Jones and Bartlett Publishers, Inc., 2003.

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Book chapters on the topic "Cellule vegetale"

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Retegi Miner, Aloña, Robin Zuluaga Gallego, Piedad Gañán Rojo, and Iñaki Mondragon. "Nanocomposites Based on Matrices Extracted from Vegetable Oils and Bacterial Cellulose." In Cellulose Based Composites, 63–78. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527649440.ch4.

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Earle, E. D., and M. H. Dickson. "Brassica Oleracea Cybrids for Hybrid Vegetable Production." In Current Issues in Plant Molecular and Cellular Biology, 171–76. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0307-7_22.

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Bandini, Stefania, and Giulio Pavesi. "Simulation of Vegetable Populations Dynamics Based on Cellular Automata." In Lecture Notes in Computer Science, 202–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45830-1_19.

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Leong, Jing Wesley, Jie Hui Deon Lee, Wan Yu Jacqueline Tan, Kaede Saito, and Haruna Watanabe. "Regeneration of α-Cellulose Nanofibers Derived from Vegetable Pulp Waste to Intercept Airborne Microparticulates." In IRC-SET 2018, 235–48. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9828-6_20.

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Tilden, Sir William A. "Vegetable Fibre and Products from Cellulose." In Chemical Discovery and Invention in the Twentieth Century, 356–62. Routledge, 2018. http://dx.doi.org/10.1201/9780429461750-25.

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Poonia, Amrita. "Antimicrobial Edible Films and Coatings for Fruits and Vegetables." In Food Science and Nutrition, 177–95. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5207-9.ch009.

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Non-degradable packaging materials are doing much damage to the environment. So the interest has been developed in biodegradable films and coatings these days. Use of edible films and coatings is eco-friendly technology used for enhancing the shelf life of the fruits and vegetables. The use of antimicrobial compounds in edible coatings of proteins, starch, cellulose derivatives, chitosan, alginate, fruit puree, and egg albumin has been successfully added to the edible films and coatings. This chapter focuses on the development of edible films and coatings with antimicrobial activity, effect of these coatings on the target microorganisms, the influence of these antimicrobial agents on mechanical & barrier properties and application of antimicrobial edible coatings on the quality of fresh fruits and vegetables.
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Poonia, Amrita. "Antimicrobial Edible Films and Coatings for Fruits and Vegetables." In Advances in Environmental Engineering and Green Technologies, 301–19. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0591-4.ch014.

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Non-degradable packaging materials are doing much damage to the environment. So the interest has been developed in biodegradable films and coatings these days. Use of edible films and coatings is eco-friendly technology used for enhancing the shelf life of the fruits and vegetables. The use of antimicrobial compounds in edible coatings of proteins, starch, cellulose derivatives, chitosan, alginate, fruit puree, and egg albumin has been successfully added to the edible films and coatings. This chapter focuses on the development of edible films and coatings with antimicrobial activity, effect of these coatings on the target microorganisms, the influence of these antimicrobial agents on mechanical & barrier properties and application of antimicrobial edible coatings on the quality of fresh fruits and vegetables.
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Kristly, Ferenc. "Implications of Cellulose in Modeling the Behavior of Vegetal Additive Materials in Clay Based Ceramics: Technical and Archaeological Issues." In Cellulose - Fundamental Aspects. InTech, 2013. http://dx.doi.org/10.5772/53526.

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King, Annie. "Removal of Excess Cellulose and Associated Polysaccharides in Fruit and Vegetable By-Products – Implication for Use in Feed for Monogastric Farm Animals." In Cellulose - Fundamental Aspects. InTech, 2013. http://dx.doi.org/10.5772/53851.

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"Japanese Vegetable Juice, Aojiru, and Cellular Immune Response for Health Promotion." In Vegetables, Fruits, and Herbs in Health Promotion, 53–62. CRC Press, 2000. http://dx.doi.org/10.1201/9781420042542-10.

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Conference papers on the topic "Cellule vegetale"

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Liu, Daosheng, Yahui Zhao, and Xingrong Chen. "Electrical Characteristics of Cellulose Pressboard Modified by Nano-TiO2in Mineral and Vegetable Mixed Oil." In 2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE). IEEE, 2020. http://dx.doi.org/10.1109/ichve49031.2020.9279426.

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Vukovic, Dejan, Mark Jovalekic, Stefan Tenbohlen, Jorg Harthun, Christophe Perrier, Mamadou Lamine Coulibaly, and Harald Fink. "Comparative experimental study of dielectric strength of oil-cellulose insulation for mineral and vegetable-based oils." In 2012 IEEE International Symposium on Electrical Insulation (ISEI). IEEE, 2012. http://dx.doi.org/10.1109/elinsl.2012.6251503.

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Zhu, Jing, Xiaoqing Bao, and Meijue Zhang. "Research of epidermal cellular vegetal cycle of intravascular low level laser irradiation in treatment of psoriasis." In 2004 Shanghai international Conference on Laser Medicine and Surgery, edited by Jing Zhu. SPIE, 2005. http://dx.doi.org/10.1117/12.639327.

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Barrera, C., A. Arrieta, and N. Escobar. "Application of Conducting Polymer Composites With Cellulose Fibers on Water Softening." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89969.

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Hard water is unsuitable for industrial and domestic purposes given its high levels of calcium and magnesium divalents which generate scale, oxidation and are antagonistic of optimal performance of detergents and industrial equipment. Conventional methods for water softening generate by-products that need to be treated, which makes these methods economically and environmentally unsustainable and open the opportunity to develop new technology for this application. The ion exchange behavior during the charge and discharge processes (i.e. oxidation / reduction), of conducting polymers and the combination of these materials with other such as fibers, to develop new hybrid materials that exhibit the inherent properties of both components, has been the object of many studies in the last years. The aim of this study is to evaluate the applicability of vegetable cellulose microfibers as a base to obtain a conducting polymer composite membrane with polypyrrole and to analyze the membrane performance to remove ions dissolved in hard water. The application of conducting polymer composite on water softening is based on the use of pyrrole’s electrochemical properties jointed to the flexibility and relatively high surface areas associated with cellulose, to promote an ion exchange reaction between the composite membrane and the hard water. The cellulose membranes obtained from banana plant waste (raquis), were uniform with individual and well separated fibers. The fibers were successfully encapsulated by a continuous coating of polypyrrole through in situ oxidative chemical polymerization. The amount of polypyrrole deposited on the fiber increased with increasing concentrations of the monomer, which was easily identified through the observation of differences on the intensity of the light to dark colour shift that coated the fibers after the polymerization. The applicability of the conducting polymer composite on water softening was tested using an experimental device, finding reductions on the conductivity for hard water within 23 to 66 μs/cm after 6 hours of the assay.
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