Chromosome Organization and Dynamics during Interphase, Mitosis, and Meiosis in Plants

Tiang, Choon-Lin; He, Yan; Pawlowski, Wojciech P.

doi:10.1104/pp.111.187161

Cited by 103 publications

(93 citation statements)

References 67 publications

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“…Thus, H1 dynamics in Arabidopsis MMCs committed to meiosis (depletion at early S phase and reloading at early prophase I) might reflect similar roles. Furthermore, additional chromatin modifiers are essential to the execution of meiotic events following meiotic S phase (Tiang et al, 2012). For instance, DNA methylation and histone H4 acetylation events contribute to chiasma distribution and frequency in Arabidopsis (Perrella et al, 2010;Yelina et al, 2012).…”

Section: Research Article Development 140 (19)mentioning

confidence: 99%

“…Whether H3K9 and H3K4 methylation also contribute to the formation and repair of double-strand breaks, which underlies genetic recombination, in plant as in animal meiosis (Ivanovska and OrrWeaver, 2006;Borde et al, 2009) remains to be determined. A speculative role for chromatin reprogramming in the MMC could thus lie in the establishment of an epigenetic landscape that is instructive for further chromatin dynamics and subsequent meiotic events (Tiang et al, 2012).…”

Section: Research Article Development 140 (19)mentioning

confidence: 99%

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Chromatin reprogramming during the somatic-to-reproductive cell fate transition in plants

et al. 2013

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SUMMARYThe life cycle of flowering plants is marked by several post-embryonic developmental transitions during which novel cell fates are established. Notably, the reproductive lineages are first formed during flower development. The differentiation of spore mother cells, which are destined for meiosis, marks the somatic-to-reproductive fate transition. Meiosis entails the formation of the haploid multicellular gametophytes, from which the gametes are derived, and during which epigenetic reprogramming takes place. Here we show that in the Arabidopsis female megaspore mother cell (MMC), cell fate transition is accompanied by large-scale chromatin reprogramming that is likely to establish an epigenetic and transcriptional status distinct from that of the surrounding somatic niche. Reprogramming is characterized by chromatin decondensation, reduction in heterochromatin, depletion of linker histones, changes in core histone variants and in histone modification landscapes. From the analysis of mutants in which the gametophyte fate is either expressed ectopically or compromised, we infer that chromatin reprogramming in the MMC is likely to contribute to establishing postmeiotic competence to the development of the pluripotent gametophyte. Thus, as in primordial germ cells of animals, the somatic-to-reproductive cell fate transition in plants entails large-scale epigenetic reprogramming.

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Section: Research Article Development 140 (19)mentioning

confidence: 99%

Section: Research Article Development 140 (19)mentioning

confidence: 99%

Chromatin reprogramming during the somatic-to-reproductive cell fate transition in plants

et al. 2013

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“…Durante a telófase, surge o envoltório nuclear, a formação do nucléolo e início da descondensação das cromátides (TIANG et al, 2012). Diferentes autores consideram a citocinese parte da telófase, o que continua sendo uma das principais questões não resolvidas em biologia celular básica; contudo, modificações características dessa fase podem ser bem evidenciadas, como a constrição do citoplasma e a formação do anel contrátil, como evidenciado e relatado por Eggert e colaboradores (EGGERT et al, 2006).…”

Section: Ciclo Celularunclassified

Mecanismos De Reparo Aos Danos No Dna Nos Pontos De Checagem Do Ciclo Celular

Nepomuceno¹,

Ferreira²,

Cruz³

et al. 2017

Enci Bio

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RESUMOFrente aos avanços tecnológicos e no conhecimento, o entendimento dos mecanismos envolvidos na divisão celular e os diferentes fatores que controlam as fases do ciclo celular vêm ganhando destaque e uma nova compreensão a nível molecular. Ademais, compreender a interação complexa e diafonia entre os diferentes mecanismos de regulação com sobreposição e interação entre diferentes rotas, que competem ou colaboram para reparar um mesmo processo de injúria, conferem a reparação precisa dos danos exercidos ao DNA, processo de suma importância para a integridade do genoma. Em pretexto, esta revisão teve por objetivo descrever os mecanismos mais importantes que ocorrem em resposta aos danos do DNA de uma célula eucariótica, discutir a sua atividade através do ciclo celular e elucidar os principais mecanismos de regulação que influenciam na escolha das vias de reparação. PALAVRAS-CHAVE: Biologia Molecular; Divisão Celular; Neoplasia. REPAIR MECHANISMS TO DNA DAMAGES IN THE CELL CYCLE CHECKPOINTSABSTRACT Due to the advances in technology and in knowledge, the understanding of the mechanisms involved in cell division and the different factors that control the phases of cell cycle are gaining prominence and a new uptake in a molecular level. In addition, understand the crosstalk between the different mechanisms of regulation with overlapping and interaction between different routes, which compete or collaborate to repair the same injury process, is necessary to ensure the precise repair of damages in DNA, a process that is very important to the maintance of the integrity of the genome. In this way, this review aimed to describe the most important mechanisms that occur in response to damage in the DNA of a eukaryotic cell, to

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“…Pawlowski and his colleagues (Tiang et al, 2012) discuss recent advances in chromosome organization and dynamics made using improved fluorescent in situ hybridization protocols as well as live-cell imaging with fluorescent protein (FP)-tagged probes. In particular, they review the concept of chromosome territory in the interphase nucleus and chromosome organization and dynamics in other parts of the cell cycle.…”

Section: Chromosome and Chromatin Organization And Dynamicsmentioning

confidence: 99%

Nuclear Architecture and Dynamics: Territories, Nuclear Bodies, and Nucleocytoplasmic Trafficking

Cheung

Reddy

2012

Plant Physiology

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Chromosome Organization and Dynamics during Interphase, Mitosis, and Meiosis in Plants

Cited by 103 publications

References 67 publications

Chromatin reprogramming during the somatic-to-reproductive cell fate transition in plants

Chromatin reprogramming during the somatic-to-reproductive cell fate transition in plants

Mecanismos De Reparo Aos Danos No Dna Nos Pontos De Checagem Do Ciclo Celular

Nuclear Architecture and Dynamics: Territories, Nuclear Bodies, and Nucleocytoplasmic Trafficking

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