Abstract:
:Heteromorphic sex-determining regions or mating-type loci can contain large regions of non-recombining sequence where selection operates under different constraints than in freely recombining autosomal regions. Detailed studies of these non-recombining regions can provide insights into how genes are gained and lost, and how genetic isolation is maintained between mating haplotypes or sex chromosomes. The Chlamydomonas reinhardtii mating-type locus (MT) is a complex polygenic region characterized by sequence rearrangements and suppressed recombination between its two haplotypes, MT+ and MT-. We used new sequence information to redefine the genetic contents of MT and found repeated translocations from autosomes as well as sexually controlled expression patterns for several newly identified genes. We examined sequence diversity of MT genes from wild isolates of C. reinhardtii to investigate the impacts of recombination suppression. Our population data revealed two previously unreported types of genetic exchange in Chlamydomonas MT--gene conversion in the rearranged domains, and crossover exchanges in flanking domains--both of which contribute to maintenance of genetic homogeneity between haplotypes. To investigate the cause of blocked recombination in MT we assessed recombination rates in crosses where the parents were homozygous at MT. While normal recombination was restored in MT+ ×MT+ crosses, it was still suppressed in MT- ×MT- crosses. These data revealed an underlying asymmetry in the two MT haplotypes and suggest that sequence rearrangements are insufficient to fully account for recombination suppression. Together our findings reveal new evolutionary dynamics for mating loci and have implications for the evolution of heteromorphic sex chromosomes and other non-recombining genomic regions.
journal_name
PLoS Genetjournal_title
PLoS geneticsauthors
De Hoff PL,Ferris P,Olson BJ,Miyagi A,Geng S,Umen JGdoi
10.1371/journal.pgen.1003724subject
Has Abstractpub_date
2013-08-01 00:00:00pages
e1003724issue
8eissn
1553-7390issn
1553-7404pii
PGENETICS-D-13-00675journal_volume
9pub_type
杂志文章相关文献
PLoS Genetics文献大全abstract::DNA damage observed during plant immune responses is reported to be an intrinsic component of plant immunity. However, other immune responses may suppress DNA damage to maintain host genome integrity. Here, we show that immunity-related DNA damage can be abrogated by preventing cell death triggered by Nucleotide-bindi...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007235
更新日期:2018-02-20 00:00:00
abstract::Integrator is an RNA polymerase II (RNAPII)-associated complex that was recently identified to have a broad role in both RNA processing and transcription regulation. Importantly, its role in human development and disease is so far largely unexplored. Here, we provide evidence that biallelic Integrator Complex Subunit ...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1006809
更新日期:2017-05-25 00:00:00
abstract::Systems biology approaches that are based on the genetics of gene expression have been fruitful in identifying genetic regulatory loci related to complex traits. We use microarray and genetic marker data from an F2 mouse intercross to examine the large-scale organization of the gene co-expression network in liver, and...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.0020130
更新日期:2006-08-18 00:00:00
abstract::Insect cuticle is composed mainly of structural proteins and the polysaccharide chitin. The CPR family is the largest family of cuticle proteins (CPs), which can be further divided into three subgroups based on the presence of one of the three presumptive chitin-binding sequence motifs denoted as Rebers-Riddiford (R&R...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004963
更新日期:2015-02-09 00:00:00
abstract::Controlling infectious disease without inducing unwanted inflammatory disease requires proper regulation of the innate immune response. Thus, innate immunity needs to be activated when needed during an infection, but must be limited to prevent damage. To accomplish this, negative regulators of innate immunity limit th...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003855
更新日期:2013-10-01 00:00:00
abstract::We carried out an admixture analysis of a sample comprising 1,019 individuals from all the provinces of Cuba. We used a panel of 128 autosomal Ancestry Informative Markers (AIMs) to estimate the admixture proportions. We also characterized a number of haplogroup diagnostic markers in the mtDNA and Y-chromosome in orde...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004488
更新日期:2014-07-24 00:00:00
abstract::The bHLH transcription factor, Phytochrome Interacting Factor 3 (PIF3), interacts specifically with the photoactivated, Pfr, form of Arabidopsis phytochrome B (phyB). This interaction induces PIF3 phosphorylation and degradation in vivo and modulates phyB-mediated seedling deetiolation in response to red light. To ide...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000352
更新日期:2009-01-01 00:00:00
abstract::We propose a novel statistical framework for integrating the result from molecular quantitative trait loci (QTL) mapping into genome-wide genetic association analysis of complex traits, with the primary objectives of quantitatively assessing the enrichment of the molecular QTLs in complex trait-associated genetic vari...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1006646
更新日期:2017-03-09 00:00:00
abstract::A role for variant histone H2A.Z in gene expression is now well established but little is known about the mechanisms by which it operates. Using a combination of ChIP-chip, knockdown and expression profiling experiments, we show that upon gene induction, human H2A.Z associates with gene promoters and helps in recruiti...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000687
更新日期:2009-10-01 00:00:00
abstract::Copy number expansions such as amplifications and duplications contribute to human phenotypic variation, promote molecular diversification during evolution, and drive the initiation and/or progression of various cancers. The mechanisms underlying these copy number changes are still incompletely understood, however. We...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003192
更新日期:2013-01-01 00:00:00
abstract::70 kDa heat shock proteins (Hsp70) are essential chaperones of the protein quality control network; vital for cellular fitness and longevity. The four cytosolic Hsp70's in yeast, Ssa1-4, are thought to be functionally redundant but the absence of Ssa1 and Ssa2 causes a severe reduction in cellular reproduction and acc...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008951
更新日期:2021-01-11 00:00:00
abstract::Sex-specific traits that lead to the production of dimorphic gametes, sperm in males and eggs in females, are fundamental for sexual reproduction and accordingly widespread among animals. Yet the sex-biased genes that underlie these sex-specific traits are under strong selective pressure, and as a result of adaptive e...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1001022
更新日期:2010-07-15 00:00:00
abstract::The High Pathogenicity Island of Yersinia pseudotuberculosis IP32637 was previously shown to be horizontally transferable as part of a large chromosomal segment. We demonstrate here that at low temperature other chromosomal loci, as well as a non-mobilizable plasmid (pUC4K), are also transferable. This transfer, desig...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002529
更新日期:2012-01-01 00:00:00
abstract::Genome duplications are important evolutionary events that impact the rate and spectrum of beneficial mutations and thus the rate of adaptation. Laboratory evolution experiments initiated with haploid Saccharomyces cerevisiae cultures repeatedly experience whole-genome duplication (WGD). We report recurrent genome dup...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007396
更新日期:2018-05-25 00:00:00
abstract::Talin serves an essential function during integrin-mediated adhesion in linking integrins to actin via the intracellular adhesion complex. In addition, the N-terminal head domain of talin regulates the affinity of integrins for their ECM-ligands, a process known as inside-out activation. We previously showed that in D...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004756
更新日期:2014-11-13 00:00:00
abstract::Polycomb proteins are epigenetic regulators that localize to developmental loci in the early embryo where they mediate lineage-specific gene repression. In Drosophila, these repressors are recruited to sequence elements by DNA binding proteins associated with Polycomb repressive complex 2 (PRC2). However, the sequence...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1001244
更新日期:2010-12-09 00:00:00
abstract::Differentiating cells interact with their extracellular environment over time. Chondrocytes embed themselves in a proteoglycan (PG)-rich matrix, then undergo a developmental transition, termed "maturation," when they express ihh to induce bone in the overlying tissue, the perichondrium. Here, we ask whether PGs regula...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002246
更新日期:2011-08-01 00:00:00
abstract::Recently, Wu and colleagues [1] proposed two novel statistics for genome-wide interaction analysis using case/control or case-only data. In computer simulations, their proposed case/control statistic outperformed competing approaches, including the fast-epistasis option in PLINK and logistic regression analysis under ...
journal_title:PLoS genetics
pub_type: 评论,杂志文章
doi:10.1371/journal.pgen.1002625
更新日期:2012-01-01 00:00:00
abstract::We report association mapping of a locus on bovine chromosome 3 that underlies a Mendelian form of stunted growth in Belgian Blue Cattle (BBC). By resequencing positional candidates, we identify the causative c124-2A>G splice variant in intron 1 of the RNF11 gene, for which all affected animals are homozygous. We make...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002581
更新日期:2012-01-01 00:00:00
abstract::The cooperative developmental system of the social amoeba Dictyostelium discoideum is susceptible to exploitation by cheaters-strains that make more than their fair share of spores in chimerae. Laboratory screens in Dictyostelium have shown that the genetic potential for facultative cheating is high, and field surveys...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000854
更新日期:2010-02-26 00:00:00
abstract::Understanding the extent to which ecological divergence is repeatable is essential for predicting responses of biodiversity to environmental change. Here we test the predictability of evolution, from genotype to phenotype, by studying parallel evolution in a salmonid fish, Arctic charr (Salvelinus alpinus), across ele...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008658
更新日期:2020-04-17 00:00:00
abstract::Cells trigger massive changes in gene expression upon environmental fluctuations. The Hog1 stress-activated protein kinase (SAPK) is an important regulator of the transcriptional activation program that maximizes cell fitness when yeast cells are exposed to osmostress. Besides being associated with transcription facto...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007090
更新日期:2017-11-20 00:00:00
abstract::The number of recombination events per meiosis varies extensively among individuals. This recombination phenotype differs between female and male, and also among individuals of each gender. In this study, we used high-density SNP genotypes of over 2,300 individuals and their offspring in two datasets to characterize r...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000648
更新日期:2009-09-01 00:00:00
abstract::Detailed information about stage-specific changes in gene expression is crucial for the understanding of the gene regulatory networks underlying development. Here, we describe the global gene expression dynamics during early flower development, a key process in the life cycle of a plant, during which floral patterning...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.0020117.eor
更新日期:2006-07-01 00:00:00
abstract::Because cohesion prevents sister-chromatid separation and spindle elongation, cohesion dissolution may trigger these two events simultaneously. However, the relatively normal spindle elongation kinetics in yeast cohesin mutants indicates an additional mechanism for the temporal control of spindle elongation. Here we s...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003319
更新日期:2013-01-01 00:00:00
abstract::Dishevelled (Dvl) proteins are important signaling components of both the canonical beta-catenin/Wnt pathway, which controls cell proliferation and patterning, and the planar cell polarity (PCP) pathway, which coordinates cell polarity within a sheet of cells and also directs convergent extension cell (CE) movements t...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000259
更新日期:2008-11-01 00:00:00
abstract::XRN2 is a conserved 5'→3' exoribonuclease that complexes with proteins that contain XRN2-binding domains (XTBDs). In Caenorhabditis elegans (C. elegans), the XTBD-protein PAXT-1 stabilizes XRN2 to retain its activity. XRN2 activity is also promoted by 3'(2'),5'-bisphosphate nucleotidase 1 (BPNT1) through hydrolysis of...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1006313
更新日期:2016-09-15 00:00:00
abstract::The male-specific region of the human Y chromosome (MSY) includes eight large inverted repeats (palindromes) in which arm-to-arm similarity exceeds 99.9%, due to gene conversion activity. Here, we studied one of these palindromes, P6, in order to illuminate the dynamics of the gene conversion process. We genotyped ten...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003666
更新日期:2013-01-01 00:00:00
abstract::Postembryonic development in Caenorhabditis elegans is a powerful model for the study of the temporal regulation of development and for the roles of microRNAs in controlling gene expression. Stable switch-like changes in gene expression occur during development as stage-specific microRNAs are expressed and subsequentl...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1005099
更新日期:2015-03-27 00:00:00
abstract::Genome-wide association studies (GWAS) have successfully identified tens of thousands of genetic variants associated with various phenotypes, but together they explain only a fraction of heritability, suggesting many variants have yet to be discovered. Recently it has been recognized that incorporating functional info...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008947
更新日期:2020-08-24 00:00:00