Article
Biochemistry & Molecular Biology
Felix E. G. Beaudry, Joanna L. Rifkin, Amanda L. Peake, Deanna Kim, Madeline Jarvis-Cross, Spencer C. H. Barrett, Stephen Wright
Summary: This study investigates the gene flow between different geographic types of the plant species Rumex hastatulus, revealing that hybrids readily form and survive multiple backcross generations in the field. The study also suggests that the neo-sex chromosomes play a role in reproductive isolation between different geographic types.
Article
Biology
Mariannah Pravatti Barcellos de Oliveira, Rafael Kretschmer, Geize Aparecida Deon, Gustavo Akira Toma, Tariq Ezaz, Caio Augusto Gomes Goes, Fabio Porto-Foresti, Thomas Liehr, Ricardo Utsunomia, Marcelo de Bello Cioffi
Summary: In this study, the dynamics of satellite DNAs (SatDNAs) accumulation and elimination during W chromosome differentiation in Triportheus fish were investigated. The majority of repetitive sequences were eliminated as speciation occurred in five additional Triportheus species. While the W chromosomes continued to degenerate, the Z chromosomes in some species began to accumulate TauSatDNAs. Species-specific SatDNAs were likely amplified in the heterochromatic regions of both Z and W chromosomes in each species. Thus, the W chromosomes of various Triportheus species underwent significant evolutionary changes within a short period of time (15-25 Myr) after divergence.
Article
Plant Sciences
Florence Ngo Ngwe, Sonja Siljak-Yakovlev
Summary: We studied the sex chromosomes of Dioscorea dumetorum in Cameroon and found that one pair of chromosomes is sex chromosomes. This research contributes to our understanding of the sex determination mechanism in D. dumetorum (standard sex-determining XX/XY system).
Article
Biochemistry & Molecular Biology
Diogo C. Cabral-de-Mello, Pablo Mora, Jose M. Rico-Porras, Ana B. S. M. Ferretti, Teresa Palomeque, Pedro Lorite
Summary: This study provides insights into the abundance and distribution of satellite DNA in heteropterans, particularly in the male genome, challenging the traditional belief that euchromatin is not enriched with satDNAs.
INSECT MOLECULAR BIOLOGY
(2023)
Review
Cell Biology
Monika Cechova, Karen H. Miga
Summary: This review focuses on the biology of satellite DNA on human X and Y chromosomes and its impact on sex chromosome aneuploidies. The findings provide insights into the prevalence and consequences of these aneuploidies.
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Alexander Kostmann, Barbora Augstenova, Daniel Frynta, Lukas Kratochvil, Michail Rovatsos
Summary: Lizards of the Scincoidea clade, including cordylids, gerrhosaurids, skinks, and xantusiids, exhibit almost worldwide distribution and significant ecological and morphological diversity. Despite limited variability in cytogenetic traits, different species show conservation in diploid chromosome numbers but significant variation in chromosome morphology and the presence of interstitial telomeric sequences. Sex chromosomes, identified as XX/XY, are only found in Tiliqua scincoides within this clade, indicating a generally poor stage of differentiation in sex chromosomes among these lizards.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Genetics & Heredity
Artem Lisachov, Daria Andreyushkova, Guzel Davletshina, Dmitry Prokopov, Svetlana Romanenko, Svetlana Galkina, Alsu Saifitdinova, Evgeniy Simonov, Pavel Borodin, Vladimir Trifonov
Summary: The study found that the lizard W chromosome contains a new repetitive sequence from different sources, indicating a complex evolutionary trajectory. While it remains unclear if the W chromosome is able to produce a protein product, it still exhibits transcriptional activity. Further research is needed to confirm the presence of this new element in other lizard species and its possible functionality.
Article
Plant Sciences
Wojciech Jesionek, Marketa Bodlakova, Zdenek Kubat, Radim Cegan, Boris Vyskot, Jan Vrana, Jan Safar, Janka Puterova, Roman Hobza
Summary: Common sorrel is a dioecious plant with sex chromosomes, where the Y chromosome shows significant expansion of satellites and non-LTR retrotransposons compared to the X chromosome. The X and Y chromosomes have diverged in terms of repeat composition, indicating a preference for transposons to proliferate in either the paternal or maternal lineage.
Article
Biology
Joanna L. Rifkin, Solomiya Hnatovska, Meng Yuan, Bianca M. Sacchi, Baharul Choudhury, Yunchen Gong, Pasi Rastas, Spencer C. H. Barrett, Stephen Wright
Summary: There is growing evidence for sex differences in the genomic landscape of recombination, but the causes and consequences of these differences are still poorly understood. This study provides evidence and characterization of sex differences in recombination landscape in a dioecious plant, suggesting that pre-existing differences in recombination may have contributed to sex chromosome formation and divergence.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Multidisciplinary Sciences
Andrzej J. Joachimiak, Marta Libik-Konieczny, Tomasz Wojtowicz, Elwira Sliwinska, Aleksandra Grabowska-Joachimiak
Summary: This study investigates the impact of Haldane's rule on fertility and rarity in the dioecious plant Rumex hastatulus. The results suggest that chromosomal system and oxidative stress levels may contribute to the rarity of interspecies hybrids.
SCIENTIFIC REPORTS
(2022)
Article
Biochemistry & Molecular Biology
Tihana Vondrak, Ludmila Oliveira, Petr Novak, Andrea Koblizkova, Pavel Neumann, Jiri Macas
Summary: Long-range sequence analysis revealed the complex structure of heterochromatin regions containing major satellite repeats, with frequent interruptions by simple sequence repeats and targeted insertions of LINE retrotransposons. These data demonstrate that the organization of satellite repeats in heterochromatic chromosome bands can be more complex than previously thought, and show that heterochromatin organization can be efficiently investigated without genome assembly.
COMPUTATIONAL AND STRUCTURAL BIOTECHNOLOGY JOURNAL
(2021)
Article
Multidisciplinary Sciences
Wenwen Wang, Yujia Yang, Suxu Tan, Tao Zhou, Yang Liu, Changxu Tian, Lisui Bao, De Xing, Baofeng Su, Jinhai Wang, Yu Zhang, Shikai Liu, Huitong Shi, Dongya Gao, Rex Dunham, Zhanjiang Liu
Summary: The X and Y chromosomes of channel catfish have the same gene contents. The X-borne hydin-1 gene is silenced, while the Y-borne hydin-1 gene is expressed, resulting in monoallelic expression of hydin-1 responsible for sex determination, similar to genomic imprinting. Treatment with a methylation inhibitor, 5-aza-dC, erases the epigenetic marks and causes sex reversal.
Review
Biochemistry & Molecular Biology
Jitendra Thakur, Jenika Packiaraj, Steven Henikoff
Summary: Satellite DNA is composed of tandem repeats that are involved in cellular processes such as chromosome segregation. Most satellite DNA sequences are found at chromosome ends and exhibit high repetitiveness. While satellite DNA is often absent in genome assemblies, some sequences can be transcribed into non-coding RNAs, influencing their function.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Biology
Matthias Stoeck, Dmitrij Dedukh, Radka Reifova, Dunja K. Lamatsch, Zuzana Starostova, Karel Janko
Summary: The roles of sex chromosomes in vertebrate hybridization and speciation are dependent on the level of divergence, affecting the degree of reproductive isolation. Undifferentiated sex chromosomes are more susceptible to introgression and may give rise to new sex chromosome systems.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Agriculture, Dairy & Animal Science
Artem Lisachov, Alexander Rumyantsev, Dmitry Prokopov, Malcolm Ferguson-Smith, Vladimir Trifonov
Summary: In this study, we describe the satellite DNA families found in two snake species from different families. Contrary to common belief, we found high conservation of these satellites in terms of nucleotide sequences and chromosomal localizations. Satellite DNA sequences make up a large portion of animal genomes, and they are typically located in heterochromatin clusters near centromeres or telomeres. The function of these clusters is to maintain chromosome and nuclear structure, and regulate chromosome behavior during cell division. Understanding satellite DNA diversity is important for studying sex chromosome evolution, hybridization, and speciation. Through our research, we identified four satellite DNA families in two snake species and determined their chromosomal localization. We found that one family is localized in the centromeres of both species, while the others form clusters on specific chromosomes or subsets of chromosomes. Our results demonstrate the high conservation of satellite DNA in snakes and support the library model of satellite DNA evolution.
Article
Evolutionary Biology
Francisca Robles Rodriguez, Roberto de la Herran, Rafael Navajas-Perez, Belen Cano-Roldan, Pedro Juan Sola-Campoy, Jerson Alexander Garcia-Zea, Carmelo Ruiz Rejon
JOURNAL OF HEREDITY
(2017)
Article
Evolutionary Biology
Juceli Gonzalez Gouveia, Ivan Rodrigo Wolf, Laurival Antonio Vilas-Boas, John Seymour Heslop-Harrison, Trude Schwarzacher, Ana Lucia Dias
JOURNAL OF HEREDITY
(2017)
Article
Plant Sciences
Adel Sepsi, James D. Higgins, John S. (Pat) Heslop-Harrison, Trude Schwarzacher
Article
Multidisciplinary Sciences
Rubar Hussein M. Salih, Lubos Majesky, Trude Schwarzacher, Richard Gornall, Pat Heslop-Harrison
Article
Genetics & Heredity
Mercedes Ruiz-Estevez, Mohammed Bakkali, Ruben Martin-Blazquez, Manuel A. Garrido-Ramos
Article
Genetics & Heredity
Sarbast Ihsan Mustafa, Trude Schwarzacher, J. S. Heslop-Harrison
MITOCHONDRIAL DNA PART A
(2018)
Review
Cell Biology
Adel Sepsi, Trude Schwarzacher
JOURNAL OF CELL SCIENCE
(2020)
Article
Plant Sciences
Nicola Schmidt, Kathrin M. Seibt, Beatrice Weber, Trude Schwarzacher, Thomas Schmidt, Tony Heitkam
Summary: The study on EPRVs within the sugar beet genome reveals their variability in structure, sequence, and distribution, occupying a small fraction of the genome. Additionally, it was found that the EPRVs are present on different chromosomes, associated with heterochromatin, centromeres, and satellite DNAs, and are also found in genomes of related wild species.
Article
Genetics & Heredity
Mohammed Bakkali, Ruben Martin-Blazquez, Mercedes Ruiz-Estevez, Manuel A. Garrido-Ramos
Summary: The sporophyte transcriptome of Killarney fern was sequenced, revealing the species' genome characteristics and providing important data for evolutionary studies. The analysis offered insights into genes involved in key functions and genetic control of plant development, stress response, and transcription factors. Overall, this study represents a significant step towards understanding gene expression in ferns and land plants.
Article
Genetics & Heredity
Donald T. Stewart, Brent M. Robicheau, Noor Youssef, Manuel A. Garrido-Ramos, Emily E. Chase, Sophie Breton
Summary: Studies have found additional putative sperm transmission element (STE) signatures in the large unassigned regions of various marine clams and freshwater mussels with doubly uniparental inheritance (DUI), indicating potential implications for understanding the origin of DUI in ancestral bivalve mollusks and suggesting future in vitro and in silico studies to further refine our understanding of this unusual mtDNA inheritance system.
Article
Plant Sciences
Paulina Tomaszewska, Maria S. Vorontsova, Stephen A. Renvoize, Sarah Z. Ficinski, Joseph Tohme, Trude Schwarzacher, Valheria Castiblanco, Jose J. de Vega, Rowan A. C. Mitchell, J. S. (Pat) Heslop-Harrison
Summary: The study focused on characterizing the genomes of diploid and polyploid Urochloa species, identifying repetitive DNA and genome composition. The research found complex genome structures with multiple ploidies and compositions, suggesting no clear geographical patterns. A new nomenclature for genomes was proposed, along with a model of evolution at the whole-genome level and support for narrow species concepts within the Urochloa genus.
Article
Biochemistry & Molecular Biology
Noorhariza Mohd Zaki, Trude Schwarzacher, Rajinder Singh, Maria Madon, Corey Wischmeyer, Nordiana Hanim Mohd Nor, Muhammad Azwan Zulkifli, J. S. (Pat) Heslop-Harrison
Summary: The study developed oligonucleotide-based chromosome-specific probes that were anchored to chromosome arms in oil palm, establishing a chromosome identification system. These probes were also able to identify individual homoeologous chromosome regions in related palm species, showing the comparative organization and evolution of genomes within Arecaceae.
CHROMOSOME RESEARCH
(2021)
Article
Agriculture, Dairy & Animal Science
Claudio A. Jimenez-Ruiz, Roberto de la Herran, Francisca Robles, Rafael Navajas-Perez, Ismael Cross, Laureana Rebordinos, Carmelo Ruiz-Rejon
Summary: MicroRNAs play crucial roles in regulating gene expression, and the miR-430 family is particularly important in early fish development. This study found that the miR-430 family emerged early in fish evolution, and all studied species have multiple copies of miR-430. In some early-diverged fish, three different versions of miR-430 were identified, but some groups seem to have lost some of these versions over time. These findings suggest the need for further research on the functions of different miR-430 versions and their potential impact on aquaculture.
Article
Biology
Ziwei Wang, Mathieu Rouard, Manosh Kumar Biswas, Gaetan Droc, Dongli Cui, Nicolas Roux, Franc-Christophe Baurens, Xue-Jun Ge, Trude Schwarzacher, Pat J. S. Heslop-Harrison, Qing Liu
Summary: We have successfully assembled a high-quality genome of Ensete glaucum and characterized the chromosomal rearrangements between E. glaucum and Musa species. This genome assembly provides a valuable resource for crop breeding and understanding environmental responses.
Meeting Abstract
Fisheries
F. Robles, M. Bakkali, M. J. Molina-Luzon, A. J. Garcia Zea, R. Martin-Blazquez, R. Navajas-Perez, R. De la Herran, Ruiz Rejon C