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The Plant Journal

Cover image for Vol. 83 Issue 1

Special Issue: Chromatin and epigenetics at the nexus between cell division, differentiation and development

July 2015

Volume 83, Issue 1

Pages 1–188


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      Chromatin and development: a special issue (pages 1–3)

      Crisanto Gutierrez and Holger Puchta

      Version of Record online: 23 JUN 2015 | DOI: 10.1111/tpj.12909

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      Centromeric chromatin and its dynamics in plants (pages 4–17)

      Inna Lermontova, Michael Sandmann, Martin Mascher, Anne-Catherine Schmit and Marie-Edith Chabouté

      Version of Record online: 23 JUN 2015 | DOI: 10.1111/tpj.12875

      Significance Statement

      Centromeres are chromatin structures required for the proper segregation of chromosomes during mitosis and meiosis. In this review, we focus on recent studies on plant centromere organization and function. We describe the loading of centromeric histone H3 into the centromere, the transcriptional activity of genes involved in kinetochore assembly and function, and the protein-protein interaction network at the centromere/kinetochore of plant cells.

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      Chromatin dynamics of plant telomeres and ribosomal genes (pages 18–37)

      Martina Dvořáčková, Miloslava Fojtová and Jiří Fajkus

      Version of Record online: 4 MAY 2015 | DOI: 10.1111/tpj.12822

      Significance Statement

      Telomeres and genes coding for 45S ribosomal RNA (rDNA) are frequent neighbours on eukaryotic chromosomes. Although their primary roles are different, they reveal an almost striking blend in their features and additional functions. Here we discuss data demonstrating structural and functional interconnectivity of telomeres and rDNA with a focus on recent results obtained in plants.

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      Links between genome replication and chromatin landscapes (pages 38–51)

      Joana Sequeira-Mendes and Crisanto Gutierrez

      Version of Record online: 29 APR 2015 | DOI: 10.1111/tpj.12847

      Significance Statement

      The chromatin lanscape has a direct impact on genome replication at various levels including specification of replication origins, replication timing and the maintenance of genome integrity.

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      Meiotic recombination hotspots – a comparative view (pages 52–61)

      Kyuha Choi and Ian R. Henderson

      Version of Record online: 20 MAY 2015 | DOI: 10.1111/tpj.12870

      Significance Statement

      Meiotic recombination is a conserved mechanism that exerts a strong influence on patterns of eukaryotic genetic diversity. Here we discuss methods to study recombination hotspots within genomes and the contribution of genetic and epigenetic information to their location.

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      Roles and activities of chromatin remodeling ATPases in plants (pages 62–77)

      Soon-Ki Han, Miin-Feng Wu, Sujuan Cui and Doris Wagner

      Version of Record online: 8 JUN 2015 | DOI: 10.1111/tpj.12877

      Significance Statement

      Chromatin remodelers can change the chromatin state and accessibility of the genomic DNA in response to cues. Recent data suggest how their dynamic activity is achieved.

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      Histone H2A/H2B chaperones: from molecules to chromatin-based functions in plant growth and development (pages 78–95)

      Wangbin Zhou, Yan Zhu, Aiwu Dong and Wen-Hui Shen

      Version of Record online: 8 APR 2015 | DOI: 10.1111/tpj.12830

      Significance Statement

      This review discusses current research findings to provide insight about molecular basis of function and regulation of the histone H2A/H2B chaperones, and to appreciate their critical roles in transcription, DNA replication and repair during plant growth and development and in plant response to environmental stresses.

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      H2A.Z mediates different aspects of chromatin function and modulates flowering responses in Arabidopsis (pages 96–109)

      José A. Jarillo and Manuel Piñeiro

      Version of Record online: 26 MAY 2015 | DOI: 10.1111/tpj.12873

      Significance Statement

      H2A.Z is an evolutionary conserved histone variant involved in various chromatin functions, including transcription, DNA repair, and genome integrity among others. In Arabidopsis, H2A.Z plays a key role in the modulation of flowering time by finely tuning the expression of master genes of this developmental transition. Recent advances in the molecular mechanisms underlying the H2A.Z-mediated modulation of the floral transition and particularly thermosensory flowering responses are discussed.

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      PRC1 is taking the lead in PcG repression (pages 110–120)

      Wiam Merini and Myriam Calonje

      Version of Record online: 20 MAR 2015 | DOI: 10.1111/tpj.12818

      Significance Statement

      Recent studies on PRC1 function challenge the classical hierarchical model for recruitment of PcG complexes to target genes to mediate gene repression in Arabidopsis by showing that the binding of PRC1 triggers the recruitment of PRC2 and H3K27 trimethylation.

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      Keeping the gate closed: functions of the polycomb repressive complex PRC2 in development (pages 121–132)

      Iva Mozgova, Claudia Köhler and Lars Hennig

      Version of Record online: 6 APR 2015 | DOI: 10.1111/tpj.12828

      Significance Statement

      Polycomb repressive complexes (PRCs) represent an evolutionarily conserved system of epigenetic gene repression that governs the establishment and maintenance of cell, tissue and organ identity, contributing to the correct execution of the developmental programs. Here, we review the composition and molecular function of the different known PRC2 complexes in plants, and focus on the role of PRC2 in mediating the establishment of different developmental phases and transitions between them.

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      Environmental perception and epigenetic memory: mechanistic insight through FLC (pages 133–148)

      Scott Berry and Caroline Dean

      Version of Record online: 29 MAY 2015 | DOI: 10.1111/tpj.12869

      Significance Statement

      FLOWERING LOCUS C (FLC) regulation provides a paradigm for understanding how chromatin can be modulated to determine gene expression in a developmental context. This review describes our current mechanistic understanding of how FLC expression is genetically specified and epigenetically regulated throughout the plant life cycle, and how this determines plant life-history strategy.

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      Transcriptional ‘memory’ of a stress: transient chromatin and memory (epigenetic) marks at stress-response genes (pages 149–159)

      Zoya Avramova

      Version of Record online: 15 APR 2015 | DOI: 10.1111/tpj.12832

      Significance Statement

      Chromatin as a potential epigenetic factor in the memory responses to recurrent environmental stresses is discussed.

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      Chromatin dynamics during cellular differentiation in the female reproductive lineage of flowering plants (pages 160–176)

      Célia Baroux and Daphné Autran

      Version of Record online: 23 JUN 2015 | DOI: 10.1111/tpj.12890

      Significance Statement

      The establishment of the female reproductive lineage in flowering plants involves several cell fate transitions associated with large-scale chromatin dynamics underlying cellular reprogramming. The next challenge is to understand how chromatin dynamics functionally contributes to cell fate transition.

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      Chromatin remodelling during male gametophyte development (pages 177–188)

      Michael Borg and Frédéric Berger

      Version of Record online: 21 MAY 2015 | DOI: 10.1111/tpj.12856

      Significance Statement

      This paper reviews our understanding of the chromatin dynamics during gametogenesis in plants.