Annual review of geneticsPub Date : 2021-11-23Epub Date: 2021-09-21DOI: 10.1146/annurev-genet-032321-091533
James Umen, Matthew D Herron
{"title":"Green Algal Models for Multicellularity.","authors":"James Umen, Matthew D Herron","doi":"10.1146/annurev-genet-032321-091533","DOIUrl":"https://doi.org/10.1146/annurev-genet-032321-091533","url":null,"abstract":"<p><p>The repeated evolution of multicellularity across the tree of life has profoundly affected the ecology and evolution of nearly all life on Earth. Many of these origins were in different groups of photosynthetic eukaryotes, or algae. Here, we review the evolution and genetics of multicellularity in several groups of green algae, which include the closest relatives of land plants. These include millimeter-scale, motile spheroids of up to 50,000 cells in the volvocine algae; decimeter-scale seaweeds in the genus <i>Ulva</i> (sea lettuce); and very plantlike, meter-scale freshwater algae in the genus <i>Chara</i> (stoneworts). We also describe algae in the genus <i>Caulerpa</i>, which are giant, multinucleate, morphologically complex single cells. In each case, we review the life cycle, phylogeny, and genetics of traits relevant to the evolution of multicellularity, and genetic and genomic resources available for the group in question. Finally, we suggest routes toward developing these groups as model organisms for the evolution of multicellularity.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39435901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2021-11-23Epub Date: 2021-09-23DOI: 10.1146/annurev-genet-071719-020506
Daren C Card, Beth Shapiro, Gonzalo Giribet, Craig Moritz, Scott V Edwards
{"title":"Museum Genomics.","authors":"Daren C Card, Beth Shapiro, Gonzalo Giribet, Craig Moritz, Scott V Edwards","doi":"10.1146/annurev-genet-071719-020506","DOIUrl":"https://doi.org/10.1146/annurev-genet-071719-020506","url":null,"abstract":"<p><p>Natural history collections are invaluable repositories of biological information that provide an unrivaled record of Earth's biodiversity. Museum genomics-genomics research using traditional museum and cryogenic collections and the infrastructure supporting these investigations-has particularly enhanced research in ecology and evolutionary biology, the study of extinct organisms, and the impact of anthropogenic activity on biodiversity. However, leveraging genomics in biological collections has exposed challenges, such as digitizing, integrating, and sharing collections data; updating practices to ensure broadly optimal data extraction from existing and new collections; and modernizing collections practices, infrastructure, and policies to ensure fair, sustainable, and genomically manifold uses of museum collections by increasingly diverse stakeholders. Museum genomics collections are poised to address these challenges and, with increasingly sensitive genomics approaches, will catalyze a future era of reproducibility, innovation, and insight made possible through integrating museum and genome sciences.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39464476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2021-11-23Epub Date: 2021-09-08DOI: 10.1146/annurev-genet-071819-103836
Hayley Walston, Audra N Iness, Larisa Litovchick
{"title":"DREAM On: Cell Cycle Control in Development and Disease.","authors":"Hayley Walston, Audra N Iness, Larisa Litovchick","doi":"10.1146/annurev-genet-071819-103836","DOIUrl":"https://doi.org/10.1146/annurev-genet-071819-103836","url":null,"abstract":"<p><p>Perfectly orchestrated periodic gene expression during cell cycle progression is essential for maintaining genome integrity and ensuring that cell proliferation can be stopped by environmental signals. Genetic and proteomic studies during the past two decades revealed remarkable evolutionary conservation of the key mechanisms that control cell cycle-regulated gene expression, including multisubunit DNA-binding DREAM complexes. DREAM complexes containing a retinoblastoma family member, an E2F transcription factor and its dimerization partner, and five proteins related to products of <i>Caenorhabditis elegans</i> multivulva (Muv) class B genes <i>lin-9</i>, <i>lin-37</i>, <i>lin-52</i>, <i>lin-53</i>, and <i>lin-54</i> (comprising the MuvB core) have been described in diverse organisms, from worms to humans. This review summarizes the current knowledge of the structure, function, and regulation of DREAM complexes in different organisms, as well as the role of DREAM in human disease.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39395730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2020-11-23Epub Date: 2020-07-14DOI: 10.1146/annurev-genet-021920-092410
Braulio Bonilla, Sarah R Hengel, McKenzie K Grundy, Kara A Bernstein
{"title":"<i>RAD51</i> Gene Family Structure and Function.","authors":"Braulio Bonilla, Sarah R Hengel, McKenzie K Grundy, Kara A Bernstein","doi":"10.1146/annurev-genet-021920-092410","DOIUrl":"https://doi.org/10.1146/annurev-genet-021920-092410","url":null,"abstract":"<p><p>Accurate DNA repair and replication are critical for genomic stability and cancer prevention. <i>RAD51</i> and its gene family are key regulators of DNA fidelity through diverse roles in double-strand break repair, replication stress, and meiosis. RAD51 is an ATPase that forms a nucleoprotein filament on single-stranded DNA. RAD51 has the function of finding and invading homologous DNA sequences to enable accurate and timely DNA repair. Its paralogs, which arose from ancient gene duplications of <i>RAD51</i>, have evolved to regulate and promote RAD51 function. Underscoring its importance, misregulation of RAD51, and its paralogs, is associated with diseases such as cancer and Fanconi anemia. In this review, we focus on the mammalian RAD51 structure and function and highlight the use of model systems to enable mechanistic understanding of RAD51 cellular roles. We also discuss how misregulation of the <i>RAD51</i> gene family members contributes to disease and consider new approaches to pharmacologically inhibit RAD51.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1146/annurev-genet-021920-092410","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38157713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2020-11-23Epub Date: 2020-09-04DOI: 10.1146/annurev-genet-022620-094553
Hao Xu, George W Bassel
{"title":"Linking Genes to Shape in Plants Using Morphometrics.","authors":"Hao Xu, George W Bassel","doi":"10.1146/annurev-genet-022620-094553","DOIUrl":"https://doi.org/10.1146/annurev-genet-022620-094553","url":null,"abstract":"<p><p>A transition from qualitative to quantitative descriptors of morphology has been facilitated through the growing field of morphometrics, representing the conversion of shapes and patterns into numbers. The analysis of plant form at the macromorphological scale using morphometric approaches quantifies what is commonly referred to as a phenotype. Quantitative phenotypic analysis of individuals with contrasting genotypes in turn provides a means to establish links between genes and shapes. The path from a gene to a morphological phenotype is, however, not direct, with instructive information progressing both across multiple scales of biological complexity and through nonintuitive feedback, such as mechanical signals. In this review, we explore morphometric approaches used to perform whole-plant phenotyping and quantitative approaches in capture processes in the mesoscales, which bridge the gaps between genes and shapes in plants. Quantitative frameworks involving both the computational simulation and the discretization of data into networks provide a putative path to predicting emergent shape from underlying genetic programs.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1146/annurev-genet-022620-094553","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38344805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2020-11-23Epub Date: 2020-08-28DOI: 10.1146/annurev-genet-021920-105545
Hadar Medini, Tal Cohen, Dan Mishmar
{"title":"Mitochondria Are Fundamental for the Emergence of Metazoans: On Metabolism, Genomic Regulation, and the Birth of Complex Organisms.","authors":"Hadar Medini, Tal Cohen, Dan Mishmar","doi":"10.1146/annurev-genet-021920-105545","DOIUrl":"https://doi.org/10.1146/annurev-genet-021920-105545","url":null,"abstract":"<p><p>Out of many intracellular bacteria, only the mitochondria and chloroplasts abandoned their independence billions of years ago and became endosymbionts within the host eukaryotic cell. Consequently, one cannot grow eukaryotic cells without their mitochondria, and the mitochondria cannot divide outside of the cell, thus reflecting interdependence. Here, we argue that such interdependence underlies the fundamental role of mitochondrial activities in the emergence of metazoans. Several lines of evidence support our hypothesis: (<i>a</i>) Differentiation and embryogenesis rely on mitochondrial function; (<i>b</i>) mitochondrial metabolites are primary precursors for epigenetic modifications (such as methyl and acetyl), which are critical for chromatin remodeling and gene expression, particularly during differentiation and embryogenesis; and (<i>c</i>) mitonuclear coregulation adapted to accommodate both housekeeping and tissue-dependent metabolic needs. We discuss the evolution of the unique mitochondrial genetic system, mitochondrial metabolites, mitonuclear coregulation, and their critical roles in the emergence of metazoans and in human disorders.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1146/annurev-genet-021920-105545","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38319653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2020-11-23Epub Date: 2020-09-01DOI: 10.1146/annurev-genet-050720-122916
Sebastian Soyk, Matthias Benoit, Zachary B Lippman
{"title":"New Horizons for Dissecting Epistasis in Crop Quantitative Trait Variation.","authors":"Sebastian Soyk, Matthias Benoit, Zachary B Lippman","doi":"10.1146/annurev-genet-050720-122916","DOIUrl":"https://doi.org/10.1146/annurev-genet-050720-122916","url":null,"abstract":"<p><p>Uncovering the genes, variants, and interactions underlying crop diversity is a frontier in plant genetics. Phenotypic variation often does not reflect the cumulative effect of individual gene mutations. This deviation is due to epistasis, in which interactions between alleles are often unpredictable and quantitative in effect. Recent advances in genomics and genome-editing technologies are elevating the study of epistasis in crops. Using the traits and developmental pathways that were major targets in domestication and breeding, we highlight how epistasis is central in guiding the behavior of the genetic variation that shapes quantitative trait variation. We outline new strategies that illuminate how quantitative epistasis from modified gene dosage defines background dependencies. Advancing our understanding of epistasis in crops can reveal new principles and approaches to engineering targeted improvements in agriculture.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1146/annurev-genet-050720-122916","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38331787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2020-11-23Epub Date: 2020-09-01DOI: 10.1146/annurev-genet-112618-043830
Erin K Borchardt, Nicole M Martinez, Wendy V Gilbert
{"title":"Regulation and Function of RNA Pseudouridylation in Human Cells.","authors":"Erin K Borchardt, Nicole M Martinez, Wendy V Gilbert","doi":"10.1146/annurev-genet-112618-043830","DOIUrl":"https://doi.org/10.1146/annurev-genet-112618-043830","url":null,"abstract":"<p><p>Recent advances in pseudouridine detection reveal a complex pseudouridine landscape that includes messenger RNA and diverse classes of noncoding RNA in human cells. The known molecular functions of pseudouridine, which include stabilizing RNA conformations and destabilizing interactions with varied RNA-binding proteins, suggest that RNA pseudouridylation could have widespread effects on RNA metabolism and gene expression. Here, we emphasize how much remains to be learned about the RNA targets of human pseudouridine synthases, their basis for recognizing distinct RNA sequences, and the mechanisms responsible for regulated RNA pseudouridylation. We also examine the roles of noncoding RNA pseudouridylation in splicing and translation and point out the potential effects of mRNA pseudouridylation on protein production, including in the context of therapeutic mRNAs.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1146/annurev-genet-112618-043830","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38331789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2020-11-23Epub Date: 2020-09-04DOI: 10.1146/annurev-genet-030220-015007
Kenneth S Zaret
{"title":"Pioneer Transcription Factors Initiating Gene Network Changes.","authors":"Kenneth S Zaret","doi":"10.1146/annurev-genet-030220-015007","DOIUrl":"https://doi.org/10.1146/annurev-genet-030220-015007","url":null,"abstract":"<p><p>Pioneer transcription factors have the intrinsic biochemical ability to scan partial DNA sequence motifs that are exposed on the surface of a nucleosome and thus access silent genes that are inaccessible to other transcription factors. Pioneer factors subsequently enable other transcription factors, nucleosome remodeling complexes, and histone modifiers to engage chromatin, thereby initiating the formation of an activating or repressive regulatory sequence. Thus, pioneer factors endow the competence for fate changes in embryonic development, are essential for cellular reprogramming, and rewire gene networks in cancer cells. Recent studies with reconstituted nucleosomes in vitro and chromatin binding in vivo reveal that pioneer factors can directly perturb nucleosome structure and chromatin accessibility in different ways. This review focuses on our current understanding of the mechanisms by which pioneer factors initiate gene network changes and will ultimately contribute to our ability to control cell fates at will.</p>","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1146/annurev-genet-030220-015007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38344810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of geneticsPub Date : 2020-11-23Epub Date: 2020-07-14DOI: 10.1146/annurev-genet-112618-043617
R John Aitken, Geoffry N De Iuliis, Brett Nixon
{"title":"The Sins of Our Forefathers: Paternal Impacts on De Novo Mutation Rate and Development.","authors":"R John Aitken, Geoffry N De Iuliis, Brett Nixon","doi":"10.1146/annurev-genet-112618-043617","DOIUrl":"https://doi.org/10.1146/annurev-genet-112618-043617","url":null,"abstract":"Spermatogonial stem cells (SSCs) are generally characterized by excellent DNA surveillance and repair, resulting in one of the lowest spontaneous mutation rates in the body. However, the barriers to mutagenesis can be overwhelmed under two sets of circumstances. First, replication errors may generate age-dependent mutations that provide the mutant cells with a selective advantage, leading to the clonal expansions responsible for dominant genetic diseases such as Apert syndrome and achondroplasia. The second mechanism centers on the vulnerability of the male germline to oxidative stress and the induction of oxidative DNA damage in spermatozoa. Defective repair of such oxidative damage in the fertilized oocyte results in the creation of mutations in the zygote that can influence the health and well-being of the offspring. A particular hot spot for such oxidative attack on chromosome 15 has been found to align with several mutations responsible for paternally mediated disease, including cancer, psychiatric disorders, and infertility. Expected final online publication date for the Annual Review of Genetics, Volume 54 is November 23, 2020. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.","PeriodicalId":8035,"journal":{"name":"Annual review of genetics","volume":null,"pages":null},"PeriodicalIF":11.1,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1146/annurev-genet-112618-043617","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38157710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}