Relevant bibliographies by topics / Initiation des primordia

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  2. Dissertations / Theses
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Academic literature on the topic 'Initiation des primordia'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Initiation des primordia"

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Grbić, Vojislava. "Comparative analysis of axillary and floral meristem development." Canadian Journal of Botany 83, no. 4 (2005): 343–49. http://dx.doi.org/10.1139/b05-017.

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Axillary and floral meristems are shoot meristems that initiate postembryonically. In Arabidopsis, axillary meristems give rise to branches during vegetative development while floral meristems give rise to flowers during reproductive development. This review compares the development of these meristems from their initiation at the shoot apical meristem up to the establishment of their specific developmental fates. Axillary and floral meristems originate from lateral primordia that form at flanks of the shoot apical meristem. Initial development of vegetative and reproductive primordia are simil
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Merrill, E. K. "Heteroblastic seedlings of green ash. II. Early development of simple and compound leaves." Canadian Journal of Botany 64, no. 11 (1986): 2650–61. http://dx.doi.org/10.1139/b86-349.

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Simple and compound leaf primordia of green ash seedlings differ in shape from initiation. Simple leaf primordia are flattened until their lamina margins grow out at a primordial length of 150 μm. Compound leaf primordia are rounded and peglike at initiation and lateral leaflet buttresses appear when primordia are 150 μm long. Terminal leaflet margins appear when compound leaf primordia are 200 μm long. At initiation both types of leaf primordia are composed of densely cytoplasmic cells. Vacuolation proceeds so that densely cytoplasmic cells remain only in areas developing blades and leaflets
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Jeune, Bernard, and Christian R. Lacroix. "A quantitative model of leaflet initiation illustrated by Murraya paniculata (Rutaceae)." Canadian Journal of Botany 71, no. 3 (1993): 457–65. http://dx.doi.org/10.1139/b93-050.

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A modified mathematical model based on the concept of generative centers is proposed to describe organogenesis in young leaf primordia of Murraya paniculata. Measurements of specific parameters on leaf primordia at different stages of development support the basic assumptions of the model. These assumptions are exponential elongation and widening of primordia in the organogenetic phase and rhythmic production of lateral elements at a fixed distance from the apex of the developing primordium. In general, the model provides good estimates for growth parameters such as elemental growth rates. It
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Gerrath, Jean M., and Usher Posluszny. "Morphological and anatomical development in the Vitaceae. I. Vegetative development in Vitis riparia." Canadian Journal of Botany 66, no. 2 (1988): 209–24. http://dx.doi.org/10.1139/b88-037.

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The vegetative development of natural populations of Vitis riparia is reported in detail for the first time, using a combination of three-dimensional and histological techniques. The initiation of both uncommitted primordia (which can develop into either inflorescences or tendrils) and leaf primordia is documented and correlated with their position in the primordium initiation cycle. There are four possible states: (i) a leaf at a lower tendril node, which arises on the flank of a dome-shaped apex directly above a leaf; (ii) a leaf at either an upper tendril node or a tendrilless node, which a
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Côté, Richard, Jean M. Gerrath, Usher Posluszny, and Bernard Grodzinski. "Comparative leaf development of conventional and semileafless peas (Pisum sativum)." Canadian Journal of Botany 70, no. 3 (1992): 571–80. http://dx.doi.org/10.1139/b92-073.

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Comparative leaf development of conventional (cv. Improved Laxton's Progress) and semileafless (cv. Curly) peas was studied three-dimensionally, from initiation to maturity. The pattern of initiation of leaf primordia, stipules, and the pairs of lateral leaflet and tendril primordia is the same for both cultivars. However, their respective developmental pathways diverge by the time four pairs of lateral primordia have formed. In the conventional cultivar, the basal lateral primordia become increasingly dorsiventral as they develop into leaflets. Distal lateral primordia retain a cylindrical fo
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Laskowski, M. J., M. E. Williams, H. C. Nusbaum, and I. M. Sussex. "Formation of lateral root meristems is a two-stage process." Development 121, no. 10 (1995): 3303–10. http://dx.doi.org/10.1242/dev.121.10.3303.

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In both radish and Arabidopsis, lateral root initiation involves a series of rapid divisions in pericycle cells located on the xylem radius of the root. In Arabidopsis, the number of pericycle cells that divide to form a primordium was estimated to be about 11. To determine the stage at which primordia are able to function as root meristems, primordia of different stages were excised and cultured without added hormones. Under these conditions, primordia that consist of 2 cell layers fail to develop while primordia that consist of at least 3–5 cell layers develop as lateral roots. We hypothesiz
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Yu, Shi-Xia, Lv-Wen Zhou, Li-Qin Hu, et al. "Asynchrony of ovule primordia initiation in Arabidopsis." Development 147, no. 24 (2020): dev196618. http://dx.doi.org/10.1242/dev.196618.

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ABSTRACTPlant ovule initiation determines the maximum of ovule number and has a great impact on the seed number per fruit. The detailed processes of ovule initiation have not been accurately described, although two connected processes, gynoecium and ovule development, have been investigated. Here, we report that ovules initiate asynchronously. The first group of ovule primordia grows out, the placenta elongates, the boundaries of existing ovules enlarge and a new group of primordia initiates from the boundaries. The expression pattern of different marker genes during ovule development illustra
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Posluszny, Usher, and Jean M. Gerrath. "The vegetative and floral development of the hybrid grape cultivar ‘Ventura’." Canadian Journal of Botany 64, no. 8 (1986): 1620–31. http://dx.doi.org/10.1139/b86-218.

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The vegetative and floral development of the hybrid grape cultivar ‘Ventura’ was studied. A tendril forms opposite the last-formed leaf on the shoot but is slightly delayed in its initiation. Six nodes and 10 primordia complete one leaf–tendril initiation cycle. The inflorescence develops at the same site and is initially indistinguishable from the tendril. Inflorescence primordia are initiated on the upper arm, first opposite each other in a decussate arrangement and then apparently spirally. Each inflorescence primordium may subsequently initiate two lateral primordia, which become subtended
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Le, Tien Thi Thuy, Viet Trang Bui, and Luong Duc Nguyen. "INHIBITION OF TAXOL ON THE DIVISION OF GREEN BEAN (PHASEOLUS AUREUS ROXB.) HYPOCOTYL CELLS." Science and Technology Development Journal 13, no. 1 (2010): 43–47. http://dx.doi.org/10.32508/stdj.v13i1.2094.

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Taxol inhibited plant cell division. This was demonstrated by the inhibition of root primordia and callus initiation from mungbean *s hypocotyls. The initiation of root primordia and roots elongation were prevented by 1mg/l taxol. Colchicine (15mg/l) decreased effect of taxol in root primordia but not in callus initiation.
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Svenson, Sven E., Fred T. Davies, and Sharon A. Duray. "Gas Exchange, Water Relations, and Dry Weight Partitioning during Root Initiation and Development of Poinsettia Cuttings." Journal of the American Society for Horticultural Science 120, no. 3 (1995): 454–59. http://dx.doi.org/10.21273/jashs.120.3.454.

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Gas exchange, water relations, and dry weight partitioning of shoot tip cuttings of `Eckespoint Lilo Red' (`Lilo') and `Gutbier V-10 Amy Red' (`Amy') poinsettia (Euphorbia pulcherrima Wind. ex Klotzsch) were studied during the initiation and development of adventitious roots. Net photosynthesis (A) and stomatal conductance (g) of cuttings were initially low and remained low until root primordia formation. Foliar relative water content (RWC) and osmotic potential (ψπ) increased upon formation of root primordia. Following formation of root primordia (2 days before visible root emergence) and con
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Dissertations / Theses on the topic "Initiation des primordia"

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Li, Anna. "Mieux Contrôler les Fluctuations de Rendement grâce à une Meilleure Compréhension des Mécanismes d’Initiation et de Différenciation des Primordia Inflorescentiels du Bourgeon Latent de Vigne." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0890/document.

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Le déterminisme de la formation de la grappe reste parmi les phénomènes les moins bien précisés de la physiologie de la Vigne. La question a été abordée de plusieurs façons mais les éléments de réponse obtenus ne permettent pas encore de se faire une idée synthétique des mécanismes fondamentaux qui produisent l’apparition des primordia inflorescentiels (PI) en année N-1 et qui pourraient régir jusqu’à 65 à 70% du rendement final en année N. Notre étude s’est donc focalisée sur (i) la caractérisation du processus de formation des PI dans les bourgeons latents de vigne (Vitis vinifera L. Merlot)
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Ljutovac, Sreten. "Coordination dans l'extension des organes aériens et conséquence pour les relations entre les dimensions finales des organes chez le blé." Paris, Institut national d'agronomie de Paris Grignon, 2002. http://www.theses.fr/2002INAP0011.

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Notre principal objectif a été de développer un modèle d'organogenèse du blé d'hivers. Ce travail s'inscrit dans une logique de modélisation architecturale du fonctionnement des plantes qui consiste à modéliser les processus physiologiques à l'échelle de l'organe et à prendre en compte une représentation réaliste de l'architecture. L'originalité du travail est de se fonder sur l'étude du maître-brin et de l'ensemble des talles primaires et d'identifier les lois communes entre les axes et entre les phytomères d'un même axe. Les principaux points axes de travail sont : L'étude de l'initiation et
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Echevin, Eglantine Emilie Denise. "Cellular basis of flower and leaf primordium initiation in Arabidopsis thaliana : how to make an organ in three dimensions." Thesis, 2020. http://hdl.handle.net/1866/25151.

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Le développement d’un organisme multicellulaire requière la coordination de la croissance, détermination tissulaire et différenciation cellulaire. Cependant, alors que les bases de la génétique de la morphogenèse ont été rigoureusement étudiées, le processus permettant la conversion de l’activité génétique en des structures biologiques complexes est bien moins compris. Chez Arabidopsis thaliana, les feuilles et fleurs initiés à partir du Méristème Apical Primaire (MAP) ont une expression génétique casi similaire. Toutefois, leur forme est considérablement différente dès les premières étapes de
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Books on the topic "Initiation des primordia"

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Templeton, C. W. Effect of short-term storage of shoot tips from black spruce container seedlings on the estimation of bud initiation and needle primordia number. Ontario, Ministry of Natural Resources, 1992.

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Dubrovsky, Joseph G., Laurent Laplaze, Hidehiro Fukaki, and Marta Joan Laskowski, eds. Root Branching: from Lateral Root Primordium Initiation and Morphogenesis to Function. Frontiers Media SA, 2020. http://dx.doi.org/10.3389/978-2-88963-291-6.

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Rapoport-Albert, Ada. Women and the Messianic Heresy of Sabbatai Zevi, 1666 - 1816. Liverpool University Press, 2015. http://dx.doi.org/10.3828/liverpool/9781906764807.001.0001.

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Women are conspicuously absent from the Jewish mystical tradition. The chance survival of scant evidence suggests that, at various times and places, individual Jewish women did pursue the path of mystical piety or prophetic spirituality, but it appears that they were generally censured, and efforts were made to suppress their activities. This contrasts sharply with the fully acknowledged prominence of women in the mystical traditions of both Christianity and Islam. It is against this background that the mystical messianic movement centred on the personality of Sabbatai Zevi (1626–1676) stands
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Book chapters on the topic "Initiation des primordia"

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Godin, Christophe, Eugenio Azpeitia, and Etienne Farcot. "An introduction to modeling the initiation of the floral primordium." In From Molecules to Living Organisms: An Interplay Between Biology and Physics. Oxford University Press, 2016. http://dx.doi.org/10.1093/acprof:oso/9780198752950.003.0009.

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D. Maniero, Gregory. "Evolutionary Conservation of the Role of CD4 as a Receptor for Interleukin-16." In Interleukins - The Immune and Non-Immune Systems’ Related Cytokines. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96951.

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The interaction of CD4 with MHC class II during helper T-cell activation and effector function is required for the initiation of an adaptive immune response in all gnathostomes. CD4 is comprised of four immunoglobulin domains but most likely arose from an ancestral two-domain homolog. The distal, D1 domain of CD4 binds to non-polymorphic regions of the MHC molecule, but despite the absolute requirement for this interaction, the sequence and structure of this domain are not well conserved through phylogeny. Conversely, the proximal, D4 domain of CD4 contains the binding site of the cytokine IL-16 and is highly conserved in its amino acid structure. IL-16 is a cytokine that has been described in a wide variety of invertebrate and vertebrate species. The CD4-binding residues on IL-16 are highly conserved throughout phylogeny, allowing for promiscuous binding of IL-16 to CD4 between members of unrelated taxa. This chapter aims to present structural, and functional support for the hypothesis that the CD4 co-receptor of the TCR arose from a primordial receptor for IL-16.
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Journal articles
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