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HEI10 coarsening, chromatin and sequence polymorphism shape the plant meiotic recombination landscape HEI10粗化、染色质和序列多态性塑造了植物减数分裂重组景观
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-06-04 DOI: 10.1016/j.pbi.2024.102570
Chris Morgan , Martin Howard , Ian R. Henderson
{"title":"HEI10 coarsening, chromatin and sequence polymorphism shape the plant meiotic recombination landscape","authors":"Chris Morgan ,&nbsp;Martin Howard ,&nbsp;Ian R. Henderson","doi":"10.1016/j.pbi.2024.102570","DOIUrl":"https://doi.org/10.1016/j.pbi.2024.102570","url":null,"abstract":"<div><p>Meiosis is a conserved eukaryotic cell division that produces spores required for sexual reproduction. During meiosis, chromosomes pair and undergo programmed DNA double-strand breaks, followed by homologous repair that can result in reciprocal crossovers. Crossover formation is highly regulated with typically few events per homolog pair. Crossovers additionally show wider spacing than expected from uniformly random placement - defining the phenomenon of interference. In plants, the conserved HEI10 E3 ligase is initially loaded along meiotic chromosomes, before maturing into a small number of foci, corresponding to crossover locations. We review the coarsening model that explains these dynamics as a diffusion and aggregation process, resulting in approximately evenly spaced HEI10 foci. We review how underlying chromatin states, and the presence of interhomolog polymorphisms, shape the meiotic recombination landscape, in light of the coarsening model. Finally, we consider future directions to understand the control of meiotic recombination in plant genomes.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S136952662400061X/pdfft?md5=18e7c75ce9e20927f8c69030f249874b&pid=1-s2.0-S136952662400061X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141250964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cause or effect: Probing the roles of epigenetics in plant development and environmental responses 因果关系：探究表观遗传学在植物发育和环境反应中的作用
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-06-03 DOI: 10.1016/j.pbi.2024.102569
Xuejing Wang, Nobutoshi Yamaguchi
{"title":"Cause or effect: Probing the roles of epigenetics in plant development and environmental responses","authors":"Xuejing Wang,&nbsp;Nobutoshi Yamaguchi","doi":"10.1016/j.pbi.2024.102569","DOIUrl":"https://doi.org/10.1016/j.pbi.2024.102569","url":null,"abstract":"<div><p>Epigenetic modifications are inheritable, reversible changes that control gene expression without altering the DNA sequence itself. Recent advances in epigenetic and sequencing technologies have revealed key regulatory regions in genes with multiple epigenetic changes. However, causal associations between epigenetic changes and physiological events have rarely been examined. Epigenome editing enables alterations to the epigenome without changing the underlying DNA sequence. Modifying epigenetic information in plants has important implications for causality assessment of the epigenome. Here, we briefly review tools for selectively interrogating the epigenome. We highlight promising research on site-specific DNA methylation and histone modifications and propose future research directions to more deeply investigate epigenetic regulation, including cause-and-effect relationships between epigenetic modifications and the development/environmental responses of <em>Arabidopsis thaliana</em>.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141244153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multifaceted mechanisms controlling grain disarticulation in the Poaceae 控制菊科植物谷粒脱节的多重机制
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-06-02 DOI: 10.1016/j.pbi.2024.102564
Yunqing Yu , Elizabeth A. Kellogg
{"title":"Multifaceted mechanisms controlling grain disarticulation in the Poaceae","authors":"Yunqing Yu ,&nbsp;Elizabeth A. Kellogg","doi":"10.1016/j.pbi.2024.102564","DOIUrl":"10.1016/j.pbi.2024.102564","url":null,"abstract":"<div><p>Cereal shattering and threshability, both involving disarticulation of grains from the mother plant, are important traits for cereal domestication and improvement. Recent studies highlighted diverse mechanisms influencing shattering and threshability, either through development of the disarticulation zone or floral structures enclosing or supporting the disarticulation unit. Differential lignification in the disarticulation zone is essential for rice shattering but not required for many other grasses. During shattering, the disarticulation zone undergoes either abscission leading to cell separation or cell breakage. Threshability can be affected by the morphology and toughness of the enclosing floral structures, and in some species, by the inherent weakness of the disarticulation zone. Fine-tuning shattering and threshability is essential for breeding wild and less domesticated cereals.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624000554/pdfft?md5=34c6480501b7d29b755555b940500355&pid=1-s2.0-S1369526624000554-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141237517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Insights into dynamic coenocytic endosperm development: Unraveling molecular, cellular, and growth complexity 洞察动态同源胚乳发育：揭示分子、细胞和生长的复杂性
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-06-02 DOI: 10.1016/j.pbi.2024.102566
Vijyesh Sharma, Mohammad Foteh Ali, Tomokazu Kawashima
{"title":"Insights into dynamic coenocytic endosperm development: Unraveling molecular, cellular, and growth complexity","authors":"Vijyesh Sharma,&nbsp;Mohammad Foteh Ali,&nbsp;Tomokazu Kawashima","doi":"10.1016/j.pbi.2024.102566","DOIUrl":"10.1016/j.pbi.2024.102566","url":null,"abstract":"<div><p>The endosperm, a product of double fertilization, is one of the keys to the evolution and success of angiosperms in conquering the land. While there are differences in endosperm development among flowering plants, the most common form is coenocytic growth, where the endosperm initially undergoes nuclear division without cytokinesis and eventually becomes cellularized. This complex process requires interplay among networks of transcription factors such as MADS-box, auxin response factors (ARFs), and phytohormones. The role of cytoskeletal elements in shaping the coenocytic endosperm and influencing seed growth also becomes evident. This review offers a recent understanding of the molecular and cellular dynamics in coenocytic endosperm development and their contributions to the final seed size.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141237515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Illuminating the role of the calyptra in sporophyte development 阐明萼片在孢子体发育过程中的作用。
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-06-01 DOI: 10.1016/j.pbi.2024.102565
Jessica M. Budke
{"title":"Illuminating the role of the calyptra in sporophyte development","authors":"Jessica M. Budke","doi":"10.1016/j.pbi.2024.102565","DOIUrl":"10.1016/j.pbi.2024.102565","url":null,"abstract":"<div><p>The study of moss calyptra form and function began almost 250 years ago, but calyptra research has remained a niche endeavor focusing on only a small number of species. Recent advances have focused on calyptra cuticular waxes, which function in dehydration protection of the immature sporophyte apex. The physical presence of the calyptra also plays a role in sporophyte development, potentially via its influence on auxin transport. Progress developing genomic resources for mosses beyond the model <em>Physcomitrium patens,</em> specifically for species with larger calyptrae and taller sporophytes, in combination with advances in CRISPR-Cas9 genome editing will enable the influence of the calyptra on gene expression and the production of RNAs and proteins that coordinate sporophyte development to be explored.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141198924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chemical tools for unpicking plant specialised metabolic pathways 揭示植物特殊代谢途径的化学工具
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-05-30 DOI: 10.1016/j.pbi.2024.102554
Benedikt Seligmann , Shenyu Liu , Jakob Franke
{"title":"Chemical tools for unpicking plant specialised metabolic pathways","authors":"Benedikt Seligmann ,&nbsp;Shenyu Liu ,&nbsp;Jakob Franke","doi":"10.1016/j.pbi.2024.102554","DOIUrl":"10.1016/j.pbi.2024.102554","url":null,"abstract":"<div><p>Elucidating the biochemical pathways of specialised metabolites in plants is key to enable or improve their sustainable biotechnological production. Chemical tools can greatly facilitate the discovery of biosynthetic genes and enzymes. Here, we summarise transdisciplinary approaches where methods from chemistry and chemical biology helped to overcome key challenges of pathway elucidation. Based on recent examples, we describe how state-of-the-art isotope labelling experiments can guide the selection of biosynthetic gene candidates, how affinity-based probes enable the identification of novel enzymes, how semisynthesis can improve the availability of elusive pathway intermediates, and how biomimetic reactions provide a better understanding of inherent chemical reactivity. We anticipate that a wider application of such chemical methods will accelerate the pace of pathway elucidation in plants.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624000451/pdfft?md5=0d15c185e80b62b4200a38c84bce7bf0&pid=1-s2.0-S1369526624000451-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141184109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamics of polycomb group marks in Arabidopsis 拟南芥多聚酶群标记的动态变化
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-05-21 DOI: 10.1016/j.pbi.2024.102553
Fernando Baile, Myriam Calonje
{"title":"Dynamics of polycomb group marks in Arabidopsis","authors":"Fernando Baile,&nbsp;Myriam Calonje","doi":"10.1016/j.pbi.2024.102553","DOIUrl":"https://doi.org/10.1016/j.pbi.2024.102553","url":null,"abstract":"<div><p>Polycomb Group (PcG) histone-modifying system is key in maintaining gene repression, providing a mitotically heritable cellular memory. Nevertheless, to allow plants to transition through distinct transcriptional programs during development or to respond to external cues, PcG-mediated repression requires reversibility. Several data suggest that the dynamics of PcG marks may vary considerably in different cell contexts; however, how PcG marks are established, maintained, or removed in each case is far from clear. In this review, we survey the knowns and unknowns of the molecular mechanisms underlying the maintenance or turnover of PcG marks in different cell stages.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S136952662400044X/pdfft?md5=2fd9079c1d46057449067bfa410b6aee&pid=1-s2.0-S136952662400044X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141073525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interplay between histone variants and chaperones in plants 植物中组蛋白变体与伴侣蛋白之间的相互作用
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-05-21 DOI: 10.1016/j.pbi.2024.102551
Jiabing Wu , Bing Liu , Aiwu Dong
{"title":"Interplay between histone variants and chaperones in plants","authors":"Jiabing Wu ,&nbsp;Bing Liu ,&nbsp;Aiwu Dong","doi":"10.1016/j.pbi.2024.102551","DOIUrl":"https://doi.org/10.1016/j.pbi.2024.102551","url":null,"abstract":"<div><p>Histone chaperones and histone variants play crucial roles in DNA replication, gene transcription, and DNA repair in eukaryotes. Histone chaperones reversibly promote nucleosome assembly and disassembly by incorporating or evicting histones and histone variants to modulate chromatin accessibility, thereby altering the chromatin states and modulating DNA-related biological processes. Cofactors assist histone chaperones to target specific chromatin regions to regulate the exchange of histones and histone variants. In this review, we summarize recent progress in the interplay between histone variants and chaperones in plants. We discuss the structural basis of chaperone–histone complexes and the mechanisms of their cooperation in regulating gene transcription and plant development.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141073523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Targeted gene regulation through epigenome editing in plants 通过植物表观基因组编辑实现定向基因调控
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-05-21 DOI: 10.1016/j.pbi.2024.102552
Yuejing Cheng , Yu Zhou , Ming Wang
{"title":"Targeted gene regulation through epigenome editing in plants","authors":"Yuejing Cheng ,&nbsp;Yu Zhou ,&nbsp;Ming Wang","doi":"10.1016/j.pbi.2024.102552","DOIUrl":"https://doi.org/10.1016/j.pbi.2024.102552","url":null,"abstract":"<div><p>The precise targeted gene regulation in plants is essential for improving plant traits and gaining a comprehensive understanding of gene functions. The regulation of gene expression in eukaryotes can be achieved through transcriptional and epigenetic mechanisms. Over the last decade, advancements in gene-targeting technologies, along with an expanded understanding of epigenetic gene regulation mechanisms, have significantly contributed to the development of programmable gene regulation tools. In this review, we will discuss the recent progress in targeted plant gene regulation through epigenome editing, emphasizing the role of effector proteins in modulating target gene expression via diverse mechanisms, including DNA methylation, histone modifications, and chromatin remodeling. Additionally, we will also briefly review targeted gene regulation by transcriptional regulation and mRNA modifications in plants.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141073524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diversifying floral organ identity 花器官特征多样化。
IF 9.5 2区 生物学
Current opinion in plant biology Pub Date : 2024-05-18 DOI: 10.1016/j.pbi.2024.102550
Andrea D. Appleton, Elena M. Kramer
{"title":"Diversifying floral organ identity","authors":"Andrea D. Appleton,&nbsp;Elena M. Kramer","doi":"10.1016/j.pbi.2024.102550","DOIUrl":"10.1016/j.pbi.2024.102550","url":null,"abstract":"<div><p>A fascinating component of floral morphological diversity is the evolution of novel floral organ identities. Perhaps the best-understood example of this is the evolutionary sterilization of stamens to yield staminodes, which have evolved independently numerous times across angiosperms and display a considerable range of morphologies. We are only beginning to understand how modifications of the ancestral stamen developmental program have produced staminodes, but investigating this phenomenon has the potential to help us understand both the origin of floral novelty and the evolution of genetic networks more broadly.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":9.5,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141064675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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