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Artykuły w czasopismach na temat "Root meristems"

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Clark, S. E., M. P. Running, and E. M. Meyerowitz. "CLAVATA3 is a specific regulator of shoot and floral meristem development affecting the same processes as CLAVATA1." Development 121, no. 7 (1995): 2057–67. http://dx.doi.org/10.1242/dev.121.7.2057.

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We have previously described the phenotype of Arabidopsis thaliana plants with mutations at the CLAVATA1 (CLV1) locus (Clark, S. E., Running, M. P. and Meyerowitz, E. M. (1993) Development 119, 397–418). Our investigations demonstrated that clv1 plants develop enlarged vegetative and inflorescence apical meristems, and enlarged and indeterminate floral meristems. Here, we present an analysis of mutations at a separate locus, CLAVATA3 (CLV3), that disrupt meristem development in a manner similar to clv1 mutations. clv3 plants develop enlarged apical meristems as early as the mature embryo stage
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Laux, T., K. F. Mayer, J. Berger, and G. Jurgens. "The WUSCHEL gene is required for shoot and floral meristem integrity in Arabidopsis." Development 122, no. 1 (1996): 87–96. http://dx.doi.org/10.1242/dev.122.1.87.

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Self perpetuation of the shoot meristem is essential for the repetitive initiation of shoot structures during plant development. In Arabidopsis shoot meristem maintenance is disrupted by recessive mutations in the WUSCHEL (WUS) gene. The defect is evident at all developmental stages and is restricted to shoot and floral meristems, whereas the root meristem is not affected. wus mutants fail to properly organize a shoot meristem in the embryo. Postembryonically, defective shoot meristems are initiated repetitively but terminate prematurely in aberrant flat structures. In contrast to wild-type sh
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Kang, Huijia, Di Wu, Tianyi Fan, and Yan Zhu. "Activities of Chromatin Remodeling Factors and Histone Chaperones and Their Effects in Root Apical Meristem Development." International Journal of Molecular Sciences 21, no. 3 (2020): 771. http://dx.doi.org/10.3390/ijms21030771.

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Eukaryotic genes are packaged into dynamic but stable chromatin structures to deal with transcriptional reprogramming and inheritance during development. Chromatin remodeling factors and histone chaperones are epigenetic factors that target nucleosomes and/or histones to establish and maintain proper chromatin structures during critical physiological processes such as DNA replication and transcriptional modulation. Root apical meristems are vital for plant root development. Regarding the well-characterized transcription factors involved in stem cell proliferation and differentiation, there is
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Pan, W. H., A. Houben, and R. Schlegel. "Highly effective cell synchronization in plant roots by hydroxyurea and amiprophos-methyl or colchicine." Genome 36, no. 2 (1993): 387–90. http://dx.doi.org/10.1139/g93-053.

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Effective somatic cell synchronization in root-tip meristems and improved chromosome spreading were achieved in white campion, wheat, rye, and barley by application of hydroxyurea and amiprophos-methyl or colchicine, combined with a pretreatment of ice water and modified fixative, as well as enzymatic digestion of the meristems. The protocol provides metaphase indices of approximately 50%. The chromosomes and chromosomal DNA were with minimum distortion, providing useful material for chromosome banding studies, in situ DNA–DNA hybridization, microdissection, and microcloning.Key words: Melandr
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Jackson, D., B. Veit, and S. Hake. "Expression of maize KNOTTED1 related homeobox genes in the shoot apical meristem predicts patterns of morphogenesis in the vegetative shoot." Development 120, no. 2 (1994): 405–13. http://dx.doi.org/10.1242/dev.120.2.405.

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In this paper we describe the expression patterns of a family of homeobox genes in maize and their relationship to organogenic domains in the vegetative shoot apical meristem. These genes are related by sequence to KNOTTED1, a gene characterized by dominant neomorphic mutations which perturb specific aspects of maize leaf development. Four members of this gene family are expressed in shoot meristems and the developing stem, but not in determinate lateral organs such as leaves or floral organs. The genes show distinct expression patterns in the vegetative shoot apical meristem that together pre
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Song, Zewen, Wenjun Zhou, Hanyu Jiang, and Yifan Duan. "Research Progress of CLE and Its Prospects in Woody Plants." Plants 14, no. 10 (2025): 1424. https://doi.org/10.3390/plants14101424.

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The peptide ligands of the CLAVATA3/EMBRYO SURROUNDING REGION-RELATED (CLE) family have been previously identified as essential signals for both short- and long-distance communication in plants, particularly during stem cell homeostasis, cell fate determination, and growth and development. To date, most studies on the CLE family have focused on model plants and especially those involving stem and apical meristems. Relatively little is known about the role of CLE peptides in tall trees and other plant meristems. In this review, we summarize the role of CLE genes in regulating plant Root Apical
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Haque, MS, and K. Hattori. "Detection of viruses of Bangladeshi and Japanese garlic and their elimination through root meristem culture." Progressive Agriculture 28, no. 2 (2017): 55–63. http://dx.doi.org/10.3329/pa.v28i2.33465.

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A number of viruses cause considerable yield loss and quality deterioration in garlic. Root meristems of virus infected plants are known to be free from detectable viruses. This potentiality could be exploited to obtain virus free clones at a high frequency by culturing excised root meristems in vitro. We have developed efficient methods of direct and somatic embryo derived shoot regeneration from root meristems of garlic. The objectives of this work were to detect viruses infecting Bangladeshi and Japanese garlic clones and find an easy and efficient method of eliminating the viruses for the
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Du, Yujuan, and Ben Scheres. "PLETHORA transcription factors orchestrate de novo organ patterning during Arabidopsis lateral root outgrowth." Proceedings of the National Academy of Sciences 114, no. 44 (2017): 11709–14. http://dx.doi.org/10.1073/pnas.1714410114.

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Plant development is characterized by repeated initiation of meristems, regions of dividing cells that give rise to new organs. During lateral root (LR) formation, new LR meristems are specified to support the outgrowth of LRs along a new axis. The determination of the sequential events required to form this new growth axis has been hampered by redundant activities of key transcription factors. Here, we characterize the effects of three PLETHORA (PLT) transcription factors, PLT3, PLT5, and PLT7, during LR outgrowth. In plt3plt5plt7 triple mutants, the morphology of lateral root primordia (LRP)
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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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Stahl, Yvonne, and Rüdiger Simon. "Peptides and receptors controlling root development." Philosophical Transactions of the Royal Society B: Biological Sciences 367, no. 1595 (2012): 1453–60. http://dx.doi.org/10.1098/rstb.2011.0235.

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The growth of a plant's root system depends on the continued activity of the root meristem, and the generation of new meristems when lateral roots are initiated. Plants have developed intricate signalling systems that employ secreted peptides and plasma membrane-localized receptor kinases for short- and long-range communication. Studies on growth of the vascular system, the generation of lateral roots, the control of cell differentiation in the root meristem and the interaction with invading pathogens or symbionts has unravelled a network of peptides and receptor systems with occasionally shar
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Rozprawy doktorskie na temat "Root meristems"

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Lyndon, Robert Frank. "Growth and development of the root and shoot apical meristems." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/15238.

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Talboys, Peter James. "Hormonal regulation of stem cell maintenance in root meristems of Arabidopsis thaliana." Thesis, University of Leeds, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.574619.

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Continuing root growth is crucial for the ongoing survival of a plant and provides the structure basis for the acquisition of valuable resources such as water and nutrients required for growth and development. The root apical meristem, located at the root apex, contains a stem cell niche which is the source of root cell production and patterning. This project focuses on the influence of phytohormone signalling upon the maintenance of the root apical meristem (RAM) in Arabidopsis thaliana. Through a combination of physiological, genetic and molecular approaches, the project has uncovered eviden
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Plum, Sara A. "Manipulation of sources and sinks of grasses : growth, photosynthesis and root exudation." Thesis, Bangor University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389504.

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Hugues, Alice. "Epigenetic regulation of root cell differentiation by the Polycomb Repressive Complex 2 in Arabidopsis thaliana." Electronic Thesis or Diss., Lyon, École normale supérieure, 2024. http://www.theses.fr/2024ENSL0005.

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La différentiation cellulaire, qui désigne la transition d’une cellule d’un état souche vers un état mature, est un processus morphogénétique : elle s’accompagne de changements phénotypiques cellulaires issus de modifications de l’expression des gènes. L’activation et la répression de l’expression des gènes résulte de l’activité conjointe de facteurs de transcription et de complexes régulateurs de la chromatine qui instruisent des états chromatiniens locaux via des modifications post-traductionnelles (PTM) des histones nucléosomales. Ces états peuvent faciliter ou empêcher la machinerie de tra
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Rodrigues, Maria Aurineide. "Sinalização no ganho de competência para a conversão de meristemas apicais radiculares de Catasetum fimbriatum em gemas caulinares." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/41/41132/tde-28012009-101737/.

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Durante esse trabalho de pesquisa verificou-se que a aquisição de competência para conversão de ápices radiculares de Catasetum fimbriatum em gemas caulinares aumentava à medida que as plantas envelheciam. Esse processo esteve relacionado ao estabelecimento do crescimento determinado das raízes e com a parada da atividade e re-organização estrutural do meristema apical radicular (MAR). Este, quando ainda jovem e destituído de competência para a conversão em gemas, apresentava uma organização do tipo fechada, ao passo que em estágios avançados do envelhecimento este padrão transformou-se em um
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Costa, Mayra Camargo Andrade. "Desenvolvimento de Setaria viridis com ênfase no estabelecimento do meristema radicular." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/64/64133/tde-07032019-141238/.

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Setaria viridis é uma espécie de gramínea muito relevante em estudos de desenvolvimento vegetal, por determinadas características que a fazem uma excelente proposta de organismo modelo para plantas monocotiledôneas de metabolismo C4. Para que a espécie seja utilizada amplamente em estudos que visem compreender o funcionamento e desenvolvimento vegetal, bem como os mecanismos moleculares que o modulam, é essencial que aspectos de seu desenvolvimento sejam desvendados. Nesse contexto, a caracterização do meristema radicular e das estruturas presentes nos estágios iniciais da germinação é importa
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Moreno-Ortega, Beatriz. "Instabilité développementale chez les racines latérales du maïs : une analyse multi-échelle." Thesis, Montpellier, SupAgro, 2016. http://www.theses.fr/2016NSAM0022/document.

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Dans l’optique d’une seconde Révolution Verte, visant, à la différence de la première, à accroître les rendements des cultures dans un contexte de faible fertilité, les stratégies mises en place par les plantes pour une assimilation optimale des nutriments du sol se trouvent au cœur du problème. Afin de le résoudre et d’identifier les variétés idéales parmi la diversité génétique des plantes cultivées, les systèmes racinaires, leur développement et leur architecture, sont appelés à jouer le premier rôle. La variabilité au sein des racines latérales semble s’avérer une caractéristique cruciale
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Silva, Thaís Cristina Ribeiro da. "Cellular and molecular mechanisms underlying root sucker formation in Arabidopsis lyrata." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/16347.

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Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2018-01-15T11:45:55Z No. of bitstreams: 1 texto completo.pdf: 1448345 bytes, checksum: a83f2b152e3e1ed2e0720b2e5c9c54e9 (MD5)<br>Made available in DSpace on 2018-01-15T11:45:55Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1448345 bytes, checksum: a83f2b152e3e1ed2e0720b2e5c9c54e9 (MD5) Previous issue date: 2017-05-30<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>A organogênese de brotos a partir de raízes (rootsuckers) permite a propagação vegetativa daArabidopsis lyrata, o parente mais próxim
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Truskina, Jekaterina. "The role of auxin in cell differentiation in meristems." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEN033/document.

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L'auxine régule la croissance et le développement des plantes grâce aux facteurs de transcription de la famille des "AUXIN RESPONSE FACTOR" (ARF). Chez Arabidopsis thaliana en particulier, ARF5, 6, 7, 8 et 19 activent l'expression de gènes cibles en réponse à l'auxine. Ces cinq ARF activateurs contrôlent de façon plus ou moins redondante des processus divers au cours du développement de la plante, notamment la régulation des croissances au niveau des méristèmes racinaires et aériens ainsi que la formation des racines latérales ou des méristèmes axillaires.Chacun de ces cinq ARF activateurs pré
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Chen, Gwennaëlle. "Rôles de polygalacturonases (PG) dans le développement racinaire, chez Arabidopsis thaliana." Thesis, Amiens, 2018. http://www.theses.fr/2018AMIE0022/document.

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La paroi des cellules végétales subit des modifications afin de s'assouplir ou de se rigidifier selon les besoins de la plante. Cette paroi est une structure complexe, composée de cellulose, d'hémicellulose et de pectines. Les modifications subies par les pectines au cours de l'élongation cellulaire sont encore assez peu caractérisées. Dans ce contexte, le but de ce projet est d'étudier le rôle de deux polygalacturonases (PG) dans le développement racinaire de la plante modèle A. thaliana. Les PG sont des enzymes de dégradation des homogalacturonanes (HG), le composant pectique majoritaire de
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Części książek na temat "Root meristems"

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DeJong, T. M. "Understanding the root sink." In Concepts for understanding fruit trees. CABI, 2022. http://dx.doi.org/10.1079/9781800620865.0008.

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Abstract Root development and growth is similar to shoot growth in that extension growth is initiated by an apical meristem and girth growth of mature roots is carried out by the vascular cambium. However, the initiation of lateral roots is entirely different than the initiation of lateral leaves or shoot meristems. This chapter deals with understanding the root sink in fruit trees by studying root growth, including the initiation of lateral roots, root classification according to size and function, factors affecting their growth, and rootstocks.
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Twyman, R. M. "Shoot and Root Meristems." In BIOS Instant Notes in Developmental Biology. Taylor & Francis, 2023. http://dx.doi.org/10.1201/9781003416371-77.

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Pavlović, Mirjana, and Ksenija Radotić. "Shoot and Root Apical Meristems." In Animal and Plant Stem Cells. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47763-3_21.

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Lyndon, R. F. "Root and shoot meristems: structure and growth." In Plant Development. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-7979-9_2.

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Lyndon, R. F. "Root and shoot meristems: structure and growth." In Plant Development. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-6844-1_2.

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Vilhar, Barbara, Maja Ravnikar, and Dennis Francis. "Jasmonic Acid Affects Cell Division in Meristems of Cultured Potato Roots." In Biology of Root Formation and Development. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5403-5_17.

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Gasperl, Anna, and Maria Müller. "Cytogenetic Bioindication in Root Meristems for Vitality Assessment of Trees." In Methods in Molecular Biology. Springer US, 2024. http://dx.doi.org/10.1007/978-1-0716-3778-4_6.

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Karampelias, Michael, Ricardo Tejos, Jiří Friml, and Steffen Vanneste. "Optimized Whole-Mount In Situ Immunolocalization for Arabidopsis thaliana Root Meristems and Lateral Root Primordia." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7747-5_10.

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Chiatante, Donato, Lucia Maiuro, Gabriella Stefania Scippa, and Antonino Di Iorio. "Effect of water stress upon root meristems of pea seedlings: The role of quantitative and qualitative changes in protein patterns." In Recent Advances of Plant Root Structure and Function. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-017-2858-4_18.

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Li, Le, Trude Schwarzacher, Paulina Tomaszewska, et al. "Protocols for Chromosome Preparations: Molecular Cytogenetics and Studying Genome Organization in Coffee." In Mutation Breeding in Coffee with Special Reference to Leaf Rust. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-67273-0_21.

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AbstractCytological preparations from cell nuclei are required to count the number of chromosomes (including determining ploidy or aneuploidy), to investigate their morphology and organization. The results are valuable for genetic and evolutionary studies, and in breeding programs to understand species relationships, polyploidy, and potential introgression of chromosomes in hybrids between different species. Preparation of good chromosome spreads with well-separated metaphase chromosomes is the foundation of cytogenetic research including chromosomal mapping based on FISH (fluorescence in situ
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Streszczenia konferencji na temat "Root meristems"

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Elena, Bonciu. "CHROMOSOMAL ABERRATIONS INDUCED BY PENTIMETHALIN IN ALLIUM SATIVUM ROOT MERISTEMS." In 14th SGEM GeoConference on NANO, BIO AND GREEN � TECHNOLOGIES FOR A SUSTAINABLE FUTURE. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b61/s25.042.

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Savenko, E. G., Zh M. Mukhina, V. A. Glazyrina, and L. A. Shundrina. "Control of gamete origin of white cabbage regenerants in anther culture in vitro." In CURRENT STATE, PROBLEMS AND PROSPECTS OF THE DEVELOPMENT OF AGRARIAN SCIENCE. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-2020-5-9-10-94.

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The complex use of indirect methods (counting chloroplasts in stomatal cells, as well as direct counting of chromosomes in preparations of root meristems) in combination with DNA methods makes it possible to identify ploidy of plants obtained from white cabbage anthers and to rank them on haploids / doubled haploids and diploid ones already on test tube level.
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Leshko, Olha, Anastasiya Atamaniuk, and Dana Nanivska. "CYTOSTATIC EFFECT OF BISPHENOL A ON THE ROOT MERISTEMS OF ALLIUM CEPA L." In EDUCATION AND SCIENCE OF TODAY: INTERSECTORAL ISSUES AND DEVELOPMENT OF SCIENCES. European Scientific Platform, 2024. http://dx.doi.org/10.36074/logos-18.10.2024.036.

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"Keeping the gate closed: WOX5 supports the balance between the proximal and distal root meristems via auxin biosynthesis in Arabidopsis thaliana L." In Bioinformatics of Genome Regulation and Structure/ Systems Biology. institute of cytology and genetics siberian branch of the russian academy of science, Novosibirsk State University, 2020. http://dx.doi.org/10.18699/bgrs/sb-2020-217.

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"DyCeModel: a tool for 1D simulation for plant hormones control of tissue patterning using shoot and root apical meristems of Arabidopsis thaliana as examples." In Биоинформатика регуляции и структуры геномов / системная биология. ИЦиГ СО РАН, 2024. http://dx.doi.org/10.18699/bgrs2024-06-30.

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"Systems biology study on the WOX5 role in the distal part of the root meristem in Arabidopsis thaliana." In Plant Genetics, Genomics, Bioinformatics, and Biotechnology. Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 2019. http://dx.doi.org/10.18699/plantgen2019-157.

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Shevtsova, Natalie L., Dmitriy I. Gudkov, and Andrian A. Yavnyuk. "Some Aspects of Radioecological Monitoring of High Aquatic Plants From Water-Bodies Within the Chernobyl Accident Exclusion Zone." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16368.

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The impact analysis of low doses of ionizing radiation on the breathers in natural populations is an important part of radiobiological studies of non-human biota. The main aim of our studies was to investigate some cytogenetic, morphological and reproductive rates of the common reed (Phragmites australis (Cav.) Trin. ex. Steud.) from different water bodies within the Chernobyl accident exclusion zone. The absorbed dose rate for littoral emergent plants in sampling water bodies was varied from 1.3E−02 to 1.6E−01 Gy/h. The rate and main types of chromosome aberrations in roots meristems, morphol
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Platova, N. G. "The influence of hypomagnetic conditions on the germination of lettuce seeds and the formation of chromosomal abnormalities in the root meristem." In IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future". Kazan University Press, 2019. http://dx.doi.org/10.26907/978-5-00130-204-9-2019-351.

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Paradiž, Jasna. "Determining the genetic vulnerability of plants due to ionizing radiation: a comprehensive analysis of the cytogenetic balance and responses of the Allium root meristem to various radiation doses." In RAD Conference. RAD Centre, 2023. http://dx.doi.org/10.21175/rad.abstr.book.2023.37.4.

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Raporty organizacyjne na temat "Root meristems"

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Eshed-Williams, Leor, and Daniel Zilberman. Genetic and cellular networks regulating cell fate at the shoot apical meristem. United States Department of Agriculture, 2014. http://dx.doi.org/10.32747/2014.7699862.bard.

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The shoot apical meristem establishes plant architecture by continuously producing new lateral organs such as leaves, axillary meristems and flowers throughout the plant life cycle. This unique capacity is achieved by a group of self-renewing pluripotent stem cells that give rise to founder cells, which can differentiate into multiple cell and tissue types in response to environmental and developmental cues. Cell fate specification at the shoot apical meristem is programmed primarily by transcription factors acting in a complex gene regulatory network. In this project we proposed to provide si
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Chamovitz, A. Daniel, and Georg Jander. Genetic and biochemical analysis of glucosinolate breakdown: The effects of indole-3-carbinol on plant physiology and development. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7597917.bard.

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Genetic and biochemical analysis of glucosinolate breakdown: The effects of indole-3-carbinol on plant physiology and development Glucosinolates are a class of defense-related secondary metabolites found in all crucifers, including important oilseed and vegetable crops in the Brassica genus and the well-studied model plant Arabidopsis thaliana. Upon tissue damage, such as that provided by insect feeding, glucosinolates are subjected to catalysis and spontaneous degradation to form a variety of breakdown products. These breakdown products typically have a deterrent effect on generalist herbivor
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