Genome Biology and Evolution, Journal Year: 2022, Volume and Issue: 14(3)
Published: Feb. 4, 2022
Language: Английский
PLoS Biology, Journal Year: 2022, Volume and Issue: 20(2), P. e3001559 - e3001559
Published: Feb. 25, 2022
Germline-restricted DNA has evolved in diverse animal taxa and is found several vertebrate clades, nematodes, flies. In these lineages, either portions of chromosomes or entire are eliminated from somatic cells early development, restricting the genome to germline. Little known about why germline-restricted evolved, especially flies, which 3 families, Chironomidae, Cecidomyiidae, Sciaridae, carry (GRCs). We conducted a genomic analysis GRCs fungus gnat Bradysia ( Sciara ) coprophila (Diptera: Sciaridae), 2 large “L” chromosomes. sequenced assembled B . used differences sequence coverage k-mer frequency between germline tissues identify GRC compare it other genome. that large, gene rich, have many genes with divergent homologs on also exist population we sequenced. more similar another Dipteran family (Cecidomyiidae) than homologous Sciaridae. This unexpected finding suggests likely arose Sciaridae through hybridization related lineage. These results provide foundation answer questions evolution such as how this event resulted what features cause them be restricted
Language: Английский
Citations
28
Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(1995)
Published: March 22, 2023
Parthenogenesis has been documented in almost every phylum of animals, and yet this phenomenon is largely understudied. It particular importance dipterans since some parthenogenetic species are also disease vectors agricultural pests. Here, we present a catalogue dipterans, although it likely that many more remain to be identified, discuss how their developmental biology interactions with diverse environments may linked different types reproduction. We the advances genetics genomics have identified chromosomal loci associated parthenogenesis. In particular, polygenic cause facultative parthenogenesis uncovered Drosophila mercatorum, allowing corresponding genetic variants tested for ability promote another species, melanogaster . This study probably identifies just one routes could followed evolution attempt account why evolved so times dipteran order appears particularly prevalent. significance coarse genomic changes, including non-disjunction, aneuploidy, polyploidy how, together changes specific genes, these might relate both obligate other animals.
Language: Английский
Citations
15
Insects, Journal Year: 2024, Volume and Issue: 15(2), P. 118 - 118
Published: Feb. 6, 2024
Pseudolycoriella hygida (Sauaia & Alves, 1968) is a sciarid that has been continuously cultured in the laboratory for nearly 60 years. Studies on this species have contributed to understanding of DNA puffs, which are characteristic Sciaridae, and knowledge more general aspects insect biology, including cell death, nucleolar organization, role hormone ecdysone during molting. The genome Psl. now sequenced, it third publicly available genome. aim work expand current hygida. morphology adults revisited. larvae pupae described, together with behavior immature stages under conditions. Cytogenetic maps salivary gland polytene chromosomes presented, comparative analysis mitotic six different species. was originally described as Bradysia recently moved Pseudolycoriella. We examine here systematic position latter genus. Our results extend characterization an unconventional model organism constitute important resource those working cytogenetics, ecology, taxonomy, phylogenetic systematics sciarids.
Language: Английский
Citations
5
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2025, Volume and Issue: unknown
Published: April 16, 2025
Abstract Programmed DNA elimination (PDE), a phenomenon wherein cells eliminate subset of genetic material during certain stages development, is observed in broad range organisms. The fungus gnat Bradysia (formerly Sciara ) coprophila undergoes series PDE events their including germline-restricted chromosomes (called L chromosomes) soma and paternal male meiosis. However, the underlying mechanisms this are poorly understood. Highly repetitive satellite DNA, which often shows chromosome specific distribution, possible candidate for sequences involved PDE. In study, we utilized recent genomic data genome assemblies to identify new B. . Through characterization distribution on chromosomes, found that X autosomes do not share centromeric sequence with chromosomes. We further provide cytological evidence confirms finding based assembly there two distinct were previously distinguished cytologically. Together, our work lays foundation future studies explore connection between mechanism
Language: Английский
Citations
0
Chromosome Research, Journal Year: 2022, Volume and Issue: 30(2-3), P. 255 - 272
Published: April 13, 2022
Abstract Germline-restricted chromosomes (GRCs) are accessory that occur only in germ cells. They eliminated from somatic cells through programmed DNA elimination during embryo development. GRCs have been observed several unrelated animal taxa and show peculiar modes of non-Mendelian inheritance within-individual elimination. Recent cytogenetic phylogenomic evidence suggests a GRC is present across the species-rich songbirds, but absent non-passerine birds, implying over half all 10,500 bird species extensive germline/soma genome differences. Here, we review recent insights gained genomic, transcriptomic, approaches with regard to genetic content, phylogenetic distribution, songbird GRC. While many questions remain unsolved terms inheritance, elimination, function, discuss plausible scenarios future directions for understanding this widespread form
Language: Английский
Citations
17
iScience, Journal Year: 2023, Volume and Issue: 26(4), P. 106449 - 106449
Published: March 20, 2023
Soil biota has a crucial impact on soil ecology, global climate changes, and effective crop management studying the diverse ecological roles of dipteran larvae deepens understanding food webs. A multi-omics study Pseudolycoriella hygida comb. nov. (Diptera: Sciaroidea: Sciaridae) aimed to characterize carbohydrate-active enzymes (CAZymes) for litter degradation in this species. Manual curation 17,881 predicted proteins Psl. genome identified 137 secreted CAZymes, which 33 are present saliva proteome, broadly confirmed by CAZyme catalytic profiling against plant cell wall polysaccharides pNP-glycosyl substrates. Comparisons with two other sciarid species outgroup Lucilia cuprina Calliphoridae) 42 families defining profile. The litter-degrading potential sciarids corroborates their significant role as decomposers, yields insights evolution insect feeding habits, highlights importance insects source biotechnologically relevant enzymes.
Language: Английский
Citations
10
Biochimie, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 1, 2025
Language: Английский
Citations
0
Annual Review of Ecology Evolution and Systematics, Journal Year: 2022, Volume and Issue: 53(1), P. 1 - 23
Published: July 29, 2022
The ability to reproduce is the key trait that distinguishes living organisms from inorganic matter, and strategies used achieve successful reproduction are almost as diverse themselves. In animals, most widespread form of involves separate male female sexes: Each sex produces haploid gametes via meiosis, two fuse a new diploid organism. some cases, both parents contribute equally nuclear cytoplasmic genomes their offspring. However, such fully symmetric represents extreme end continuum toward complete asymmetry, where offspring inherit only one parents. Asymmetries also occur with respect fate maternally paternally inherited which affected by non-Mendelian inheritance. this review, we describe diversity animal reproductive systems along different axes symmetry–asymmetry suggest evolutionary routes may have led increased levels asymmetry.
Language: Английский
Citations
16
Current Biology, Journal Year: 2022, Volume and Issue: 32(23), P. 5083 - 5098.e6
Published: Nov. 14, 2022
Language: Английский
Citations
16
Chromosome Research, Journal Year: 2022, Volume and Issue: 30(2-3), P. 273 - 288
Published: July 6, 2022
Language: Английский
Citations
15