Academic literature on the topic 'Holocentric'

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Journal articles on the topic "Holocentric"

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Guerra, Marcelo, and Miguel A. García. "Heterochromatin and rDNA sites distribution in the holocentric chromosomes of Cuscuta approximata Bab. (Convolvulaceae)." Genome 47, no. 1 (2004): 134–40. http://dx.doi.org/10.1139/g03-098.

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Cuscuta is a widely distributed genus of holoparasitic plants. Holocentric chromosomes have been reported only in species of one of its subgenera (Cuscuta subg. Cuscuta). In this work, a representative of this subgenus, Cuscuta approximata, was investigated looking for its mitotic and meiotic chromosome behaviour and the heterochromatin distribution. The mitotic chromosomes showed neither primary constriction nor Rabl orientation whereas the meiotic ones exhibited the typical quadripartite structure characteristic of holocentrics, supporting the assumption of holocentric chromosomes as a synap
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Mandrioli, Mauro, and Gian Carlo Manicardi. "Holocentric chromosomes." PLOS Genetics 16, no. 7 (2020): e1008918. http://dx.doi.org/10.1371/journal.pgen.1008918.

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Powers, James, Debra J. Rose, Adam Saunders, Steven Dunkelbarger, Susan Strome, and William M. Saxton. "Loss of KLP-19 polar ejection force causes misorientation and missegregation of holocentric chromosomes." Journal of Cell Biology 166, no. 7 (2004): 991–1001. http://dx.doi.org/10.1083/jcb.200403036.

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Holocentric chromosomes assemble kinetochores along their length instead of at a focused spot. The elongated expanse of an individual holocentric kinetochore and its potential flexibility heighten the risk of stable attachment to microtubules from both poles of the mitotic spindle (merotelic attachment), and hence aberrant segregation of chromosomes. Little is known about the mechanisms that holocentric species have evolved to avoid this type of error. Our studies of the influence of KLP-19, an essential microtubule motor, on the behavior of holocentric Caenorhabditis elegans chromosomes sugge
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Schubert, Veit, Mateusz Zelkowski, Sonja Klemme, and Andreas Houben. "Similar Sister Chromatid Arrangement in Mono- and Holocentric Plant Chromosomes." Cytogenetic and Genome Research 149, no. 3 (2016): 218–25. http://dx.doi.org/10.1159/000447681.

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Due to the X-shape formation at somatic metaphase, the arrangement of the sister chromatids is obvious in monocentric chromosomes. In contrast, the sister chromatids of holocentric chromosomes cannot be distinguished even at mitotic metaphase. To clarify their organization, we differentially labelled the sister chromatids of holocentric Luzula and monocentric rye chromosomes by incorporating the base analogue EdU during replication. Using super-resolution structured illumination microscopy (SIM) and 3D rendering, we found that holocentric sister chromatids attach to each other at their contact
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Zedek, František, Jakub Šmerda, Pavel Veselý, Lucie Horová, Jana Kocmanová, and Petr Bureš. "Elevation-dependent endopolyploid response suggests that plants with holocentric chromosomes are less stressed by UV-B." Botanical Journal of the Linnean Society 195, no. 1 (2020): 106–13. http://dx.doi.org/10.1093/botlinnean/boaa054.

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Abstract Previous studies suggested that holocentric chromosomes may confer a selective advantage under high ionizing or UV-B radiation due to their tolerance of fragmentation, and that the first plant and animal colonizers of land in the Palaeozoic were or may have been holocentric. Holocentric chromosomes could have, therefore, aided terrestrialization of Earth’s biota half a billion years ago, because leaving water meant facing a sharp increase of UV-B. Because we cannot go back in time, the hypothesis needs to be tested with present-day species using an indicator of UV-B stress. We took ad
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Marques, André, Tiago Ribeiro, Pavel Neumann, et al. "Holocentromeres in Rhynchospora are associated with genome-wide centromere-specific repeat arrays interspersed among euchromatin." Proceedings of the National Academy of Sciences 112, no. 44 (2015): 13633–38. http://dx.doi.org/10.1073/pnas.1512255112.

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Holocentric chromosomes lack a primary constriction, in contrast to monocentrics. They form kinetochores distributed along almost the entire poleward surface of the chromatids, to which spindle fibers attach. No centromere-specific DNA sequence has been found for any holocentric organism studied so far. It was proposed that centromeric repeats, typical for many monocentric species, could not occur in holocentrics, most likely because of differences in the centromere organization. Here we show that the holokinetic centromeres of the Cyperaceae Rhynchospora pubera are highly enriched by a centro
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HÅKANSSON, ARTUR. "HOLOCENTRIC CHROMOSOMES IN ELEOCHARIS." Hereditas 44, no. 4 (2010): 531–40. http://dx.doi.org/10.1111/j.1601-5223.1958.tb03498.x.

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Zedek, František, Klára Plačková, Pavel Veselý, et al. "Endopolyploidy is a common response to UV-B stress in natural plant populations, but its magnitude may be affected by chromosome type." Annals of Botany 126, no. 5 (2020): 883–89. http://dx.doi.org/10.1093/aob/mcaa109.

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Abstract Background and Aims Ultraviolet-B radiation (UV-B) radiation damages the DNA, cells and photosynthetic apparatus of plants. Plants commonly prevent this damage by synthetizing UV-B-protective compounds. Recent laboratory experiments in Arabidopsis and cucumber have indicated that plants can also respond to UV-B stress with endopolyploidy. Here we test the generality of this response in natural plant populations, considering their monocentric or holocentric chromosomal structure. Methods We measured the endopolyploidy index (flow cytometry) and the concentration of UV-B-protective comp
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Vanzela, André L. L., and Marcelo Guerra. "Heterochromatin differentiation in holocentric chromosomes of Rhynchospora (Cyperaceae)." Genetics and Molecular Biology 23, no. 2 (2000): 453–56. http://dx.doi.org/10.1590/s1415-47572000000200034.

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Holocentric chromosomes of six species of Rhynchospora, R. ciliata, R. pubera, R. riparia and R. barbata (2n = 10), R. nervosa (2n = 30) and R. globosa (2n = 36), were stained with CMA3/DAPI fluorochromes or treated with C-banding and sequentially stained with Giemsa or CMA3/DAPI. Variability in banding pattern was found among the species studied. Heterochromatin was observed on terminal and interstitial chromosome regions, indicating that the holocentric chromosomes of Rhynchospora show a heterochromatin distribution pattern similar to those plant monocentric chromosomes.
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Pazy, Batia, and Uzi Plitmann. "Holocentric chromosome behaviour inCuscuta (Cuscutaceae)." Plant Systematics and Evolution 191, no. 1-2 (1994): 105–9. http://dx.doi.org/10.1007/bf00985345.

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Dissertations / Theses on the topic "Holocentric"

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Buchwitz, Brian. "Chromosome segregation in the holocentric organism C. elegans /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/4996.

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Gil, Jr José. "Characterizing the 3D organization of holocentric chromosomes in Bombyx mori." Electronic Thesis or Diss., Université Paris sciences et lettres, 2022. http://www.theses.fr/2022UPSLS084.

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L'organisation du génome dans le noyau cellulaire a été observée et décrite dans différents organismes depuis plus de 140 ans. La plupart des organismes où cela a été fait sont monocentriques, c’est-à-dire dont les chromosomes n’ont qu’un seul centromère. Il a été montré que les centromères contraignent fortement l'architecture des chromosomes en interphase, et j'ai contribué lors de ma thèse à l’écriture d’une revue décrivant ce phénomène (Muller et al., 2019). Cependant, à travers l'Arbre de la Vie eucaryote, on peut trouver plusieurs exemples d'organismes qui sont holocentriques, c’est-à-di
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Anjos, Allison Kleiton dos [UNESP]. "Estrutura e evolução cariotípica em espécies da infraordem Cicadomorpha (Hemiptera: Auchenorrhyncha) baseadas na análise de DNAs repetitivos." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152488.

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Submitted by ALLISON KLEITON DOS ANJOS null (allison__anjos@hotmail.com) on 2018-01-15T10:50:34Z No. of bitstreams: 1 TESE FINAL ALLISON.pdf: 3595248 bytes, checksum: 33a447746191e365878b383ffd929cc8 (MD5)<br>Rejected by Adriana Aparecida Puerta null (dripuerta@rc.unesp.br), reason: Prezado Allison Kleiton dos Anjos, Solicitamos que realize uma nova submissão seguindo as orientações abaixo: - Resumo em língua estrangeira (inglês) - Faltou o Abstract no documento enviado. Este item é elemento obrigatório de acordo com as normas de trabalhos do seu Programa de Pós Graduação e deve vir lo
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Spence, Jennifer M. "Repetitive DNA in aphids : its nature, chromosomal distribution and evolutionary significance." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298517.

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Heckmann, Stefan [Verfasser], Gunter [Akademischer Betreuer] Reuter, Andreas [Akademischer Betreuer] Houben, and Neil [Akademischer Betreuer] Jones. "Structure and regulation of centromeres in mono‐ and holocentric chromosomes : [kumulative Dissertation] / Stefan Heckmann. Betreuer: Gunter Reuter ; Andreas Houben ; Neil Jones." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2013. http://d-nb.info/103488137X/34.

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Bardella, Vanessa Bellini [UNESP]. "Análise citogenética molecular em túbulos seminíferos de triatomíneos (Triatominae, Heteroptera)." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/92476.

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Made available in DSpace on 2014-06-11T19:26:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-26Bitstream added on 2014-06-13T19:12:50Z : No. of bitstreams: 1 bardella_vb_me_sjrp.pdf: 973541 bytes, checksum: 2642d082f6fe5ee2cb77ab3b60832684 (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Os heterópteros apresentam a meiose cística nos túbulos seminíferos. Esses possuem o cisto espermatogonial envolto pelas células císticas, as quais desenvolvem a função de nutrição das células em divisão celular. Quanto às características citogenéticas, esses in
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Pires, Weverson Luciano [UNESP]. "Estudo citogenético comparativo entre Triatoma maculata e triatoma pseudomaculata (Triatominae, Heteroptera)." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/92478.

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Made available in DSpace on 2014-06-11T19:26:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-02-21Bitstream added on 2014-06-13T20:33:40Z : No. of bitstreams: 1 pires_wl_me_sjrp.pdf: 611018 bytes, checksum: 961d88c40b2d3d5b170049ad3384f050 (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Os triatomíneos são vetores do protozoário Typanosoma cruzi, agente etiológico da moléstia de Chagas. Esses insetos são hematófagos e pertencem à ordem Heteroptera e à família Reduviidae. Disseminada por grandes extensões do Brasil e de outros países latinoamerican
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Bardella, Vanessa Bellini. "Análise citogenética molecular em túbulos seminíferos de triatomíneos (Triatominae, Heteroptera) /." São José do Rio Preto : [s.n.], 2010. http://hdl.handle.net/11449/92476.

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Orientador: Maria Tercília Vilela de Azeredo Oliveira<br>Banca: Hermione Elly Melara de Campos Bicudo<br>Banca: Patricia Pasquali Parise Maltempi<br>Resumo: Os heterópteros apresentam a meiose cística nos túbulos seminíferos. Esses possuem o cisto espermatogonial envolto pelas células císticas, as quais desenvolvem a função de nutrição das células em divisão celular. Quanto às características citogenéticas, esses insetos apresentam cromossomos holocinéticos, baixa variabilidade cariotípica e meiose invertida dos cromossomos sexuais. No presente trabalho foram caracterizadas as células císticas
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SILVA, André Seco Marques da. "Estrutura centromérica e adaptações meióticas em espécies holocêntricas do gênero rhynchospora (cyperaceae)." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/17687.

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Submitted by Irene Nascimento (irene.kessia@ufpe.br) on 2016-08-15T17:53:44Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) A_Marques_PhD_thesis_2016_FINAL.pdf: 9324057 bytes, checksum: 92c1de27f6fa947d7e6b3e74ae09a849 (MD5)<br>Made available in DSpace on 2016-08-15T17:53:46Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) A_Marques_PhD_thesis_2016_FINAL.pdf: 9324057 bytes, checksum: 92c1de27f6fa947d7e6b3e74ae09a849 (MD5) Previous issue date: 2015-02-15<br>capes<br>Cromossomos holocênt
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Pires, Weverson Luciano. "Estudo citogenético comparativo entre Triatoma maculata e triatoma pseudomaculata (Triatominae, Heteroptera) /." São José do Rio Preto : [s.n.], 2008. http://hdl.handle.net/11449/92478.

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Orientador: Maria Tercília Vilela de Azeredo Oliveira<br>Banca: Alba Regina de Abreu Lima Catelani<br>Banca: Lilian Castiglioni<br>Resumo: Os triatomíneos são vetores do protozoário Typanosoma cruzi, agente etiológico da moléstia de Chagas. Esses insetos são hematófagos e pertencem à ordem Heteroptera e à família Reduviidae. Disseminada por grandes extensões do Brasil e de outros países latinoamericanos, a doença de Chagas representa um grave e importante problema de saúde pública, caracterizando limitações e dificuldades aos tratamentos. Isso ocorre devido à precariedade apresentada pela vida
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Books on the topic "Holocentric"

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Randall, John E. Revision of the Indo-Pacific holocentrid fishes of the genus Myripristis, with descriptions of three new species. Bernice Pauahi Bishop Museum, 1996.

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Randall, J. E., and D. W. Greenfield. Revision of the Indo-Pacific Holocentrid Fishes of the Genus Myripristis, With Descriptions of Three New Species (Indo-Pacific Fishes Number 25). Bishop Museum Pr, 1996.

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Book chapters on the topic "Holocentric"

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Bureš, Petr, František Zedek, and Michaela Marková. "Holocentric Chromosomes." In Plant Genome Diversity Volume 2. Springer Vienna, 2012. http://dx.doi.org/10.1007/978-3-7091-1160-4_12.

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Moore, Graham, Luis Aragón-Alcaide, Michael Roberts, Steve Reader, Terry Miller, and Tracie Foote. "Are rice chromosomes components of a holocentric chromosome ancestor?" In Oryza: From Molecule to Plant. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5794-0_2.

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Miller, Julian F. "Neuro-Centric and Holocentric Approaches to the Evolution of Developmental Neural Networks." In Growing Adaptive Machines. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-55337-0_8.

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Manicardi, Gian Carlo, Mauro Mandrioli, Davide Bizzaro, and Umberto Bianchi. "Cytogenetic and Molecular Analysis of Heterochromatic Areas in the Holocentric Chromosomes of Different Aphid Species." In Some Aspects of Chromosome Structure and Functions. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0334-6_6.

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"Holocentric." In Encyclopedia of Genetics, Genomics, Proteomics and Informatics. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6754-9_7731.

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Albertson, D. G. "Holocentric Chromosomes." In Encyclopedia of Genetics. Elsevier, 2001. http://dx.doi.org/10.1006/rwgn.2001.0623.

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Hipp, A. L., M. Escudero, and K. S. Chung. "Holocentric Chromosomes." In Brenner's Encyclopedia of Genetics. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-12-374984-0.00723-3.

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